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Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (49 commits)
  perfcounter: Handle some IO return values
  perf_counter: Push perf_sample_data through the swcounter code
  perf_counter tools: Define and use our own u64, s64 etc. definitions
  perf_counter: Close race in perf_lock_task_context()
  perf_counter, x86: Improve interactions with fast-gup
  perf_counter: Simplify and fix task migration counting
  perf_counter tools: Add a data file header
  perf_counter: Update userspace callchain sampling uses
  perf_counter: Make callchain samples extensible
  perf report: Filter to parent set by default
  perf_counter tools: Handle lost events
  perf_counter: Add event overlow handling
  fs: Provide empty .set_page_dirty() aop for anon inodes
  perf_counter: tools: Makefile tweaks for 64-bit powerpc
  perf_counter: powerpc: Add processor back-end for MPC7450 family
  perf_counter: powerpc: Make powerpc perf_counter code safe for 32-bit kernels
  perf_counter: powerpc: Change how processor-specific back-ends get selected
  perf_counter: powerpc: Use unsigned long for register and constraint values
  perf_counter: powerpc: Enable use of software counters on 32-bit powerpc
  perf_counter tools: Add and use isprint()
  ...
This commit is contained in:
Linus Torvalds 2009-06-20 11:29:32 -07:00
parent 1eb51c33b2 eadc84cc01
commit 12e24f34cb
40 changed files with 2327 additions and 898 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/Kconfig
View File

@ -126,6 +126,7 @@ config PPC
select HAVE_OPROFILE
select HAVE_SYSCALL_WRAPPERS if PPC64
select GENERIC_ATOMIC64 if PPC32
select HAVE_PERF_COUNTERS
config EARLY_PRINTK
bool

6
arch/powerpc/include/asm/hw_irq.h
View File

@ -131,6 +131,8 @@ static inline int irqs_disabled_flags(unsigned long flags)
struct irq_chip;
#ifdef CONFIG_PERF_COUNTERS
#ifdef CONFIG_PPC64
static inline unsigned long test_perf_counter_pending(void)
{
unsigned long x;
@ -154,15 +156,15 @@ static inline void clear_perf_counter_pending(void)
"r" (0),
"i" (offsetof(struct paca_struct, perf_counter_pending)));
}
#endif /* CONFIG_PPC64 */
#else
#else /* CONFIG_PERF_COUNTERS */
static inline unsigned long test_perf_counter_pending(void)
{
return 0;
}
static inline void set_perf_counter_pending(void) {}
static inline void clear_perf_counter_pending(void) {}
#endif /* CONFIG_PERF_COUNTERS */

52
arch/powerpc/include/asm/perf_counter.h
View File

@ -10,6 +10,8 @@
*/
#include <linux/types.h>
#include <asm/hw_irq.h>
#define MAX_HWCOUNTERS 8
#define MAX_EVENT_ALTERNATIVES 8
#define MAX_LIMITED_HWCOUNTERS 2
@ -19,27 +21,27 @@
* describe the PMU on a particular POWER-family CPU.
*/
struct power_pmu {
int n_counter;
int max_alternatives;
u64 add_fields;
u64 test_adder;
int (*compute_mmcr)(u64 events[], int n_ev,
unsigned int hwc[], u64 mmcr[]);
int (*get_constraint)(u64 event, u64 *mskp, u64 *valp);
int (*get_alternatives)(u64 event, unsigned int flags,
u64 alt[]);
void (*disable_pmc)(unsigned int pmc, u64 mmcr[]);
int (*limited_pmc_event)(u64 event);
u32 flags;
int n_generic;
int *generic_events;
int (*cache_events)[PERF_COUNT_HW_CACHE_MAX]
const char *name;
int n_counter;
int max_alternatives;
unsigned long add_fields;
unsigned long test_adder;
int (*compute_mmcr)(u64 events[], int n_ev,
unsigned int hwc[], unsigned long mmcr[]);
int (*get_constraint)(u64 event, unsigned long *mskp,
unsigned long *valp);
int (*get_alternatives)(u64 event, unsigned int flags,
u64 alt[]);
void (*disable_pmc)(unsigned int pmc, unsigned long mmcr[]);
int (*limited_pmc_event)(u64 event);
u32 flags;
int n_generic;
int *generic_events;
int (*cache_events)[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX];
};
extern struct power_pmu *ppmu;
/*
* Values for power_pmu.flags
*/
@ -53,15 +55,23 @@ extern struct power_pmu *ppmu;
#define PPMU_LIMITED_PMC_REQD 2 /* have to put this on a limited PMC */
#define PPMU_ONLY_COUNT_RUN 4 /* only counting in run state */
extern int register_power_pmu(struct power_pmu *);
struct pt_regs;
extern unsigned long perf_misc_flags(struct pt_regs *regs);
#define perf_misc_flags(regs) perf_misc_flags(regs)
extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
/*
* The power_pmu.get_constraint function returns a 64-bit value and
* a 64-bit mask that express the constraints between this event and
* Only override the default definitions in include/linux/perf_counter.h
* if we have hardware PMU support.
*/
#ifdef CONFIG_PPC_PERF_CTRS
#define perf_misc_flags(regs) perf_misc_flags(regs)
#endif
/*
* The power_pmu.get_constraint function returns a 32/64-bit value and
* a 32/64-bit mask that express the constraints between this event and
* other events.
*
* The value and mask are divided up into (non-overlapping) bitfields

8
arch/powerpc/kernel/Makefile
View File

@ -97,9 +97,10 @@ obj64-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
obj-$(CONFIG_PERF_COUNTERS) += perf_counter.o power4-pmu.o ppc970-pmu.o \
power5-pmu.o power5+-pmu.o power6-pmu.o \
power7-pmu.o
obj-$(CONFIG_PPC_PERF_CTRS) += perf_counter.o
obj64-$(CONFIG_PPC_PERF_CTRS) += power4-pmu.o ppc970-pmu.o power5-pmu.o \
power5+-pmu.o power6-pmu.o power7-pmu.o
obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450-pmu.o
obj-$(CONFIG_8XX_MINIMAL_FPEMU) += softemu8xx.o
@ -108,6 +109,7 @@ obj-y += iomap.o
endif
obj-$(CONFIG_PPC64) += $(obj64-y)
obj-$(CONFIG_PPC32) += $(obj32-y)
ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC),)
obj-y += ppc_save_regs.o

417
arch/powerpc/kernel/mpc7450-pmu.c Normal file
View File

@ -0,0 +1,417 @@
/*
* Performance counter support for MPC7450-family processors.
*
* Copyright 2008-2009 Paul Mackerras, IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/string.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
#define N_COUNTER 6 /* Number of hardware counters */
#define MAX_ALT 3 /* Maximum number of event alternative codes */
/*
* Bits in event code for MPC7450 family
*/
#define PM_THRMULT_MSKS 0x40000
#define PM_THRESH_SH 12
#define PM_THRESH_MSK 0x3f
#define PM_PMC_SH 8
#define PM_PMC_MSK 7
#define PM_PMCSEL_MSK 0x7f
/*
* Classify events according to how specific their PMC requirements are.
* Result is:
* 0: can go on any PMC
* 1: can go on PMCs 1-4
* 2: can go on PMCs 1,2,4
* 3: can go on PMCs 1 or 2
* 4: can only go on one PMC
* -1: event code is invalid
*/
#define N_CLASSES 5
static int mpc7450_classify_event(u32 event)
{
int pmc;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
if (pmc) {
if (pmc > N_COUNTER)
return -1;
return 4;
}
event &= PM_PMCSEL_MSK;
if (event <= 1)
return 0;
if (event <= 7)
return 1;
if (event <= 13)
return 2;
if (event <= 22)
return 3;
return -1;
}
/*
* Events using threshold and possible threshold scale:
* code scale? name
* 11e N PM_INSTQ_EXCEED_CYC
* 11f N PM_ALTV_IQ_EXCEED_CYC
* 128 Y PM_DTLB_SEARCH_EXCEED_CYC
* 12b Y PM_LD_MISS_EXCEED_L1_CYC
* 220 N PM_CQ_EXCEED_CYC
* 30c N PM_GPR_RB_EXCEED_CYC
* 30d ? PM_FPR_IQ_EXCEED_CYC ?
* 311 Y PM_ITLB_SEARCH_EXCEED
* 410 N PM_GPR_IQ_EXCEED_CYC
*/
/*
* Return use of threshold and threshold scale bits:
* 0 = uses neither, 1 = uses threshold, 2 = uses both
*/
static int mpc7450_threshold_use(u32 event)
{
int pmc, sel;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
sel = event & PM_PMCSEL_MSK;
switch (pmc) {
case 1:
if (sel == 0x1e || sel == 0x1f)
return 1;
if (sel == 0x28 || sel == 0x2b)
return 2;
break;
case 2:
if (sel == 0x20)
return 1;
break;
case 3:
if (sel == 0xc || sel == 0xd)
return 1;
if (sel == 0x11)
return 2;
break;
case 4:
if (sel == 0x10)
return 1;
break;
}
return 0;
}
/*
* Layout of constraint bits:
* 33222222222211111111110000000000
* 10987654321098765432109876543210
* |< >< > < > < ><><><><><><>
* TS TV G4 G3 G2P6P5P4P3P2P1
*
* P1 - P6
* 0 - 11: Count of events needing PMC1 .. PMC6
*
* G2
* 12 - 14: Count of events needing PMC1 or PMC2
*
* G3
* 16 - 18: Count of events needing PMC1, PMC2 or PMC4
*
* G4
* 20 - 23: Count of events needing PMC1, PMC2, PMC3 or PMC4
*
* TV
* 24 - 29: Threshold value requested
*
* TS
* 30: Threshold scale value requested
*/
static u32 pmcbits[N_COUNTER][2] = {
{ 0x00844002, 0x00111001 }, /* PMC1 mask, value: P1,G2,G3,G4 */
{ 0x00844008, 0x00111004 }, /* PMC2: P2,G2,G3,G4 */
{ 0x00800020, 0x00100010 }, /* PMC3: P3,G4 */
{ 0x00840080, 0x00110040 }, /* PMC4: P4,G3,G4 */
{ 0x00000200, 0x00000100 }, /* PMC5: P5 */
{ 0x00000800, 0x00000400 } /* PMC6: P6 */
};
static u32 classbits[N_CLASSES - 1][2] = {
{ 0x00000000, 0x00000000 }, /* class 0: no constraint */
{ 0x00800000, 0x00100000 }, /* class 1: G4 */
{ 0x00040000, 0x00010000 }, /* class 2: G3 */
{ 0x00004000, 0x00001000 }, /* class 3: G2 */
};
static int mpc7450_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, class;
u32 mask, value;
int thresh, tuse;
class = mpc7450_classify_event(event);
if (class < 0)
return -1;
if (class == 4) {
pmc = ((unsigned int)event >> PM_PMC_SH) & PM_PMC_MSK;
mask = pmcbits[pmc - 1][0];
value = pmcbits[pmc - 1][1];
} else {
mask = classbits[class][0];
value = classbits[class][1];
}
tuse = mpc7450_threshold_use(event);
if (tuse) {
thresh = ((unsigned int)event >> PM_THRESH_SH) & PM_THRESH_MSK;
mask |= 0x3f << 24;
value |= thresh << 24;
if (tuse == 2) {
mask |= 0x40000000;
if ((unsigned int)event & PM_THRMULT_MSKS)
value |= 0x40000000;
}
}
*maskp = mask;
*valp = value;
return 0;
}
static const unsigned int event_alternatives[][MAX_ALT] = {
{ 0x217, 0x317 }, /* PM_L1_DCACHE_MISS */
{ 0x418, 0x50f, 0x60f }, /* PM_SNOOP_RETRY */
{ 0x502, 0x602 }, /* PM_L2_HIT */
{ 0x503, 0x603 }, /* PM_L3_HIT */
{ 0x504, 0x604 }, /* PM_L2_ICACHE_MISS */
{ 0x505, 0x605 }, /* PM_L3_ICACHE_MISS */
{ 0x506, 0x606 }, /* PM_L2_DCACHE_MISS */
{ 0x507, 0x607 }, /* PM_L3_DCACHE_MISS */
{ 0x50a, 0x623 }, /* PM_LD_HIT_L3 */
{ 0x50b, 0x624 }, /* PM_ST_HIT_L3 */
{ 0x50d, 0x60d }, /* PM_L2_TOUCH_HIT */
{ 0x50e, 0x60e }, /* PM_L3_TOUCH_HIT */
{ 0x512, 0x612 }, /* PM_INT_LOCAL */
{ 0x513, 0x61d }, /* PM_L2_MISS */
{ 0x514, 0x61e }, /* PM_L3_MISS */
};
/*
* Scan the alternatives table for a match and return the
* index into the alternatives table if found, else -1.
*/
static int find_alternative(u32 event)
{
int i, j;
for (i = 0; i < ARRAY_SIZE(event_alternatives); ++i) {
if (event < event_alternatives[i][0])
break;
for (j = 0; j < MAX_ALT && event_alternatives[i][j]; ++j)
if (event == event_alternatives[i][j])
return i;
}
return -1;
}
static int mpc7450_get_alternatives(u64 event, unsigned int flags, u64 alt[])
{
int i, j, nalt = 1;
u32 ae;
alt[0] = event;
nalt = 1;
i = find_alternative((u32)event);
if (i >= 0) {
for (j = 0; j < MAX_ALT; ++j) {
ae = event_alternatives[i][j];
if (ae && ae != (u32)event)
alt[nalt++] = ae;
}
}
return nalt;
}
/*
* Bitmaps of which PMCs each class can use for classes 0 - 3.
* Bit i is set if PMC i+1 is usable.
*/
static const u8 classmap[N_CLASSES] = {
0x3f, 0x0f, 0x0b, 0x03, 0
};
/* Bit position and width of each PMCSEL field */
static const int pmcsel_shift[N_COUNTER] = {
6, 0, 27, 22, 17, 11
};
static const u32 pmcsel_mask[N_COUNTER] = {
0x7f, 0x3f, 0x1f, 0x1f, 0x1f, 0x3f
};
/*
* Compute MMCR0/1/2 values for a set of events.
*/
static int mpc7450_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], unsigned long mmcr[])
{
u8 event_index[N_CLASSES][N_COUNTER];
int n_classevent[N_CLASSES];
int i, j, class, tuse;
u32 pmc_inuse = 0, pmc_avail;
u32 mmcr0 = 0, mmcr1 = 0, mmcr2 = 0;
u32 ev, pmc, thresh;
if (n_ev > N_COUNTER)
return -1;
/* First pass: count usage in each class */
for (i = 0; i < N_CLASSES; ++i)
n_classevent[i] = 0;
for (i = 0; i < n_ev; ++i) {
class = mpc7450_classify_event(event[i]);
if (class < 0)
return -1;
j = n_classevent[class]++;
event_index[class][j] = i;
}
/* Second pass: allocate PMCs from most specific event to least */
for (class = N_CLASSES - 1; class >= 0; --class) {
for (i = 0; i < n_classevent[class]; ++i) {
ev = event[event_index[class][i]];
if (class == 4) {
pmc = (ev >> PM_PMC_SH) & PM_PMC_MSK;
if (pmc_inuse & (1 << (pmc - 1)))
return -1;
} else {
/* Find a suitable PMC */
pmc_avail = classmap[class] & ~pmc_inuse;
if (!pmc_avail)
return -1;
pmc = ffs(pmc_avail);
}
pmc_inuse |= 1 << (pmc - 1);
tuse = mpc7450_threshold_use(ev);
if (tuse) {
thresh = (ev >> PM_THRESH_SH) & PM_THRESH_MSK;
mmcr0 |= thresh << 16;
if (tuse == 2 && (ev & PM_THRMULT_MSKS))
mmcr2 = 0x80000000;
}
ev &= pmcsel_mask[pmc - 1];
ev <<= pmcsel_shift[pmc - 1];
if (pmc <= 2)
mmcr0 |= ev;
else
mmcr1 |= ev;
hwc[event_index[class][i]] = pmc - 1;
}
}
if (pmc_inuse & 1)
mmcr0 |= MMCR0_PMC1CE;
if (pmc_inuse & 0x3e)
mmcr0 |= MMCR0_PMCnCE;
/* Return MMCRx values */
mmcr[0] = mmcr0;
mmcr[1] = mmcr1;
mmcr[2] = mmcr2;
return 0;
}
/*
* Disable counting by a PMC.
* Note that the pmc argument is 0-based here, not 1-based.
*/
static void mpc7450_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
if (pmc <= 1)
mmcr[0] &= ~(pmcsel_mask[pmc] << pmcsel_shift[pmc]);
else
mmcr[1] &= ~(pmcsel_mask[pmc] << pmcsel_shift[pmc]);
}
static int mpc7450_generic_events[] = {
[PERF_COUNT_HW_CPU_CYCLES] = 1,
[PERF_COUNT_HW_INSTRUCTIONS] = 2,
[PERF_COUNT_HW_CACHE_MISSES] = 0x217, /* PM_L1_DCACHE_MISS */
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x122, /* PM_BR_CMPL */
[PERF_COUNT_HW_BRANCH_MISSES] = 0x41c, /* PM_BR_MPRED */
};
#define C(x) PERF_COUNT_HW_CACHE_##x
/*
* Table of generalized cache-related events.
* 0 means not supported, -1 means nonsensical, other values
* are event codes.
*/
static int mpc7450_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
[C(L1D)] = { /* RESULT_ACCESS RESULT_MISS */
[C(OP_READ)] = { 0, 0x225 },
[C(OP_WRITE)] = { 0, 0x227 },
[C(OP_PREFETCH)] = { 0, 0 },
},
[C(L1I)] = { /* RESULT_ACCESS RESULT_MISS */
[C(OP_READ)] = { 0x129, 0x115 },
[C(OP_WRITE)] = { -1, -1 },
[C(OP_PREFETCH)] = { 0x634, 0 },
},
[C(LL)] = { /* RESULT_ACCESS RESULT_MISS */
[C(OP_READ)] = { 0, 0 },
[C(OP_WRITE)] = { 0, 0 },
[C(OP_PREFETCH)] = { 0, 0 },
},
[C(DTLB)] = { /* RESULT_ACCESS RESULT_MISS */
[C(OP_READ)] = { 0, 0x312 },
[C(OP_WRITE)] = { -1, -1 },
[C(OP_PREFETCH)] = { -1, -1 },
},
[C(ITLB)] = { /* RESULT_ACCESS RESULT_MISS */
[C(OP_READ)] = { 0, 0x223 },
[C(OP_WRITE)] = { -1, -1 },
[C(OP_PREFETCH)] = { -1, -1 },
},
[C(BPU)] = { /* RESULT_ACCESS RESULT_MISS */
[C(OP_READ)] = { 0x122, 0x41c },
[C(OP_WRITE)] = { -1, -1 },
[C(OP_PREFETCH)] = { -1, -1 },
},
};
struct power_pmu mpc7450_pmu = {
.name = "MPC7450 family",
.n_counter = N_COUNTER,
.max_alternatives = MAX_ALT,
.add_fields = 0x00111555ul,
.test_adder = 0x00301000ul,
.compute_mmcr = mpc7450_compute_mmcr,
.get_constraint = mpc7450_get_constraint,
.get_alternatives = mpc7450_get_alternatives,
.disable_pmc = mpc7450_disable_pmc,
.n_generic = ARRAY_SIZE(mpc7450_generic_events),
.generic_events = mpc7450_generic_events,
.cache_events = &mpc7450_cache_events,
};
static int init_mpc7450_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc/7450"))
return -ENODEV;
return register_power_pmu(&mpc7450_pmu);
}
arch_initcall(init_mpc7450_pmu);

255
arch/powerpc/kernel/perf_counter.c
View File

@ -29,7 +29,7 @@ struct cpu_hw_counters {
struct perf_counter *counter[MAX_HWCOUNTERS];
u64 events[MAX_HWCOUNTERS];
unsigned int flags[MAX_HWCOUNTERS];
u64 mmcr[3];
unsigned long mmcr[3];
struct perf_counter *limited_counter[MAX_LIMITED_HWCOUNTERS];
u8 limited_hwidx[MAX_LIMITED_HWCOUNTERS];
};
@ -46,6 +46,115 @@ struct power_pmu *ppmu;
*/
static unsigned int freeze_counters_kernel = MMCR0_FCS;
/*
* 32-bit doesn't have MMCRA but does have an MMCR2,
* and a few other names are different.
*/
#ifdef CONFIG_PPC32
#define MMCR0_FCHV 0
#define MMCR0_PMCjCE MMCR0_PMCnCE
#define SPRN_MMCRA SPRN_MMCR2
#define MMCRA_SAMPLE_ENABLE 0
static inline unsigned long perf_ip_adjust(struct pt_regs *regs)
{
return 0;
}
static inline void perf_set_pmu_inuse(int inuse) { }
static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp) { }
static inline u32 perf_get_misc_flags(struct pt_regs *regs)
{
return 0;
}
static inline void perf_read_regs(struct pt_regs *regs) { }
static inline int perf_intr_is_nmi(struct pt_regs *regs)
{
return 0;
}
#endif /* CONFIG_PPC32 */
/*
* Things that are specific to 64-bit implementations.
*/
#ifdef CONFIG_PPC64
static inline unsigned long perf_ip_adjust(struct pt_regs *regs)
{
unsigned long mmcra = regs->dsisr;
if ((mmcra & MMCRA_SAMPLE_ENABLE) && !(ppmu->flags & PPMU_ALT_SIPR)) {
unsigned long slot = (mmcra & MMCRA_SLOT) >> MMCRA_SLOT_SHIFT;
if (slot > 1)
return 4 * (slot - 1);
}
return 0;
}
static inline void perf_set_pmu_inuse(int inuse)
{
get_lppaca()->pmcregs_in_use = inuse;
}
/*
* The user wants a data address recorded.
* If we're not doing instruction sampling, give them the SDAR
* (sampled data address). If we are doing instruction sampling, then
* only give them the SDAR if it corresponds to the instruction
* pointed to by SIAR; this is indicated by the [POWER6_]MMCRA_SDSYNC
* bit in MMCRA.
*/
static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp)
{
unsigned long mmcra = regs->dsisr;
unsigned long sdsync = (ppmu->flags & PPMU_ALT_SIPR) ?
POWER6_MMCRA_SDSYNC : MMCRA_SDSYNC;
if (!(mmcra & MMCRA_SAMPLE_ENABLE) || (mmcra & sdsync))
*addrp = mfspr(SPRN_SDAR);
}
static inline u32 perf_get_misc_flags(struct pt_regs *regs)
{
unsigned long mmcra = regs->dsisr;
if (TRAP(regs) != 0xf00)
return 0; /* not a PMU interrupt */
if (ppmu->flags & PPMU_ALT_SIPR) {
if (mmcra & POWER6_MMCRA_SIHV)
return PERF_EVENT_MISC_HYPERVISOR;
return (mmcra & POWER6_MMCRA_SIPR) ?
PERF_EVENT_MISC_USER : PERF_EVENT_MISC_KERNEL;
}
if (mmcra & MMCRA_SIHV)
return PERF_EVENT_MISC_HYPERVISOR;
return (mmcra & MMCRA_SIPR) ? PERF_EVENT_MISC_USER :
PERF_EVENT_MISC_KERNEL;
}
/*
* Overload regs->dsisr to store MMCRA so we only need to read it once
* on each interrupt.
*/
static inline void perf_read_regs(struct pt_regs *regs)
{
regs->dsisr = mfspr(SPRN_MMCRA);
}
/*
* If interrupts were soft-disabled when a PMU interrupt occurs, treat
* it as an NMI.
*/
static inline int perf_intr_is_nmi(struct pt_regs *regs)
{
return !regs->softe;
}
#endif /* CONFIG_PPC64 */
static void perf_counter_interrupt(struct pt_regs *regs);
void perf_counter_print_debug(void)
@ -78,12 +187,14 @@ static unsigned long read_pmc(int idx)
case 6:
val = mfspr(SPRN_PMC6);
break;
#ifdef CONFIG_PPC64
case 7:
val = mfspr(SPRN_PMC7);
break;
case 8:
val = mfspr(SPRN_PMC8);
break;
#endif /* CONFIG_PPC64 */
default:
printk(KERN_ERR "oops trying to read PMC%d\n", idx);
val = 0;
@ -115,12 +226,14 @@ static void write_pmc(int idx, unsigned long val)
case 6:
mtspr(SPRN_PMC6, val);
break;
#ifdef CONFIG_PPC64
case 7:
mtspr(SPRN_PMC7, val);
break;
case 8:
mtspr(SPRN_PMC8, val);
break;
#endif /* CONFIG_PPC64 */
default:
printk(KERN_ERR "oops trying to write PMC%d\n", idx);
}
@ -135,15 +248,15 @@ static void write_pmc(int idx, unsigned long val)
static int power_check_constraints(u64 event[], unsigned int cflags[],
int n_ev)
{
u64 mask, value, nv;
unsigned long mask, value, nv;
u64 alternatives[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES];
u64 amasks[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES];
u64 avalues[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES];
u64 smasks[MAX_HWCOUNTERS], svalues[MAX_HWCOUNTERS];
unsigned long amasks[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES];
unsigned long avalues[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES];
unsigned long smasks[MAX_HWCOUNTERS], svalues[MAX_HWCOUNTERS];
int n_alt[MAX_HWCOUNTERS], choice[MAX_HWCOUNTERS];
int i, j;
u64 addf = ppmu->add_fields;
u64 tadd = ppmu->test_adder;
unsigned long addf = ppmu->add_fields;
unsigned long tadd = ppmu->test_adder;
if (n_ev > ppmu->n_counter)
return -1;
@ -283,7 +396,7 @@ static int check_excludes(struct perf_counter **ctrs, unsigned int cflags[],
static void power_pmu_read(struct perf_counter *counter)
{
long val, delta, prev;
s64 val, delta, prev;
if (!counter->hw.idx)
return;
@ -403,14 +516,12 @@ static void write_mmcr0(struct cpu_hw_counters *cpuhw, unsigned long mmcr0)
void hw_perf_disable(void)
{
struct cpu_hw_counters *cpuhw;
unsigned long ret;
unsigned long flags;
local_irq_save(flags);
cpuhw = &__get_cpu_var(cpu_hw_counters);
ret = cpuhw->disabled;
if (!ret) {
if (!cpuhw->disabled) {
cpuhw->disabled = 1;
cpuhw->n_added = 0;
@ -479,7 +590,7 @@ void hw_perf_enable(void)
mtspr(SPRN_MMCRA, cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE);
mtspr(SPRN_MMCR1, cpuhw->mmcr[1]);
if (cpuhw->n_counters == 0)
get_lppaca()->pmcregs_in_use = 0;
perf_set_pmu_inuse(0);
goto out_enable;
}
@ -512,7 +623,7 @@ void hw_perf_enable(void)
* bit set and set the hardware counters to their initial values.
* Then unfreeze the counters.
*/
get_lppaca()->pmcregs_in_use = 1;
perf_set_pmu_inuse(1);
mtspr(SPRN_MMCRA, cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE);
mtspr(SPRN_MMCR1, cpuhw->mmcr[1]);
mtspr(SPRN_MMCR0, (cpuhw->mmcr[0] & ~(MMCR0_PMC1CE | MMCR0_PMCjCE))
@ -913,6 +1024,8 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter)
case PERF_TYPE_RAW:
ev = counter->attr.config;
break;
default:
return ERR_PTR(-EINVAL);
}
counter->hw.config_base = ev;
counter->hw.idx = 0;
@ -1007,13 +1120,12 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter)
* things if requested. Note that interrupts are hard-disabled
* here so there is no possibility of being interrupted.
*/
static void record_and_restart(struct perf_counter *counter, long val,
static void record_and_restart(struct perf_counter *counter, unsigned long val,
struct pt_regs *regs, int nmi)
{
u64 period = counter->hw.sample_period;
s64 prev, delta, left;
int record = 0;
u64 addr, mmcra, sdsync;
/* we don't have to worry about interrupts here */
prev = atomic64_read(&counter->hw.prev_count);
@ -1033,8 +1145,8 @@ static void record_and_restart(struct perf_counter *counter, long val,
left = period;
record = 1;
}
if (left < 0x80000000L)
val = 0x80000000L - left;
if (left < 0x80000000LL)
val = 0x80000000LL - left;
}
/*
@ -1047,22 +1159,9 @@ static void record_and_restart(struct perf_counter *counter, long val,
.period = counter->hw.last_period,
};
if (counter->attr.sample_type & PERF_SAMPLE_ADDR) {
/*
* The user wants a data address recorded.
* If we're not doing instruction sampling,
* give them the SDAR (sampled data address).
* If we are doing instruction sampling, then only
* give them the SDAR if it corresponds to the
* instruction pointed to by SIAR; this is indicated
* by the [POWER6_]MMCRA_SDSYNC bit in MMCRA.
*/
mmcra = regs->dsisr;
sdsync = (ppmu->flags & PPMU_ALT_SIPR) ?
POWER6_MMCRA_SDSYNC : MMCRA_SDSYNC;
if (!(mmcra & MMCRA_SAMPLE_ENABLE) || (mmcra & sdsync))
data.addr = mfspr(SPRN_SDAR);
}
if (counter->attr.sample_type & PERF_SAMPLE_ADDR)
perf_get_data_addr(regs, &data.addr);
if (perf_counter_overflow(counter, nmi, &data)) {
/*
* Interrupts are coming too fast - throttle them
@ -1088,25 +1187,12 @@ static void record_and_restart(struct perf_counter *counter, long val,
*/
unsigned long perf_misc_flags(struct pt_regs *regs)
{
unsigned long mmcra;
u32 flags = perf_get_misc_flags(regs);
if (TRAP(regs) != 0xf00) {
/* not a PMU interrupt */
return user_mode(regs) ? PERF_EVENT_MISC_USER :
PERF_EVENT_MISC_KERNEL;
}
mmcra = regs->dsisr;
if (ppmu->flags & PPMU_ALT_SIPR) {
if (mmcra & POWER6_MMCRA_SIHV)
return PERF_EVENT_MISC_HYPERVISOR;
return (mmcra & POWER6_MMCRA_SIPR) ? PERF_EVENT_MISC_USER :
PERF_EVENT_MISC_KERNEL;
}
if (mmcra & MMCRA_SIHV)
return PERF_EVENT_MISC_HYPERVISOR;
return (mmcra & MMCRA_SIPR) ? PERF_EVENT_MISC_USER :
PERF_EVENT_MISC_KERNEL;
if (flags)
return flags;
return user_mode(regs) ? PERF_EVENT_MISC_USER :
PERF_EVENT_MISC_KERNEL;
}
/*
@ -1115,20 +1201,12 @@ unsigned long perf_misc_flags(struct pt_regs *regs)
*/
unsigned long perf_instruction_pointer(struct pt_regs *regs)
{
unsigned long mmcra;
unsigned long ip;
unsigned long slot;
if (TRAP(regs) != 0xf00)
return regs->nip; /* not a PMU interrupt */
ip = mfspr(SPRN_SIAR);
mmcra = regs->dsisr;
if ((mmcra & MMCRA_SAMPLE_ENABLE) && !(ppmu->flags & PPMU_ALT_SIPR)) {
slot = (mmcra & MMCRA_SLOT) >> MMCRA_SLOT_SHIFT;
if (slot > 1)
ip += 4 * (slot - 1);
}
ip = mfspr(SPRN_SIAR) + perf_ip_adjust(regs);
return ip;
}
@ -1140,7 +1218,7 @@ static void perf_counter_interrupt(struct pt_regs *regs)
int i;
struct cpu_hw_counters *cpuhw = &__get_cpu_var(cpu_hw_counters);
struct perf_counter *counter;
long val;
unsigned long val;
int found = 0;
int nmi;
@ -1148,16 +1226,9 @@ static void perf_counter_interrupt(struct pt_regs *regs)
freeze_limited_counters(cpuhw, mfspr(SPRN_PMC5),
mfspr(SPRN_PMC6));
/*
* Overload regs->dsisr to store MMCRA so we only need to read it once.
*/
regs->dsisr = mfspr(SPRN_MMCRA);
perf_read_regs(regs);
/*
* If interrupts were soft-disabled when this PMU interrupt
* occurred, treat it as an NMI.
*/
nmi = !regs->softe;
nmi = perf_intr_is_nmi(regs);
if (nmi)
nmi_enter();
else
@ -1214,50 +1285,22 @@ void hw_perf_counter_setup(int cpu)
cpuhw->mmcr[0] = MMCR0_FC;
}
extern struct power_pmu power4_pmu;
extern struct power_pmu ppc970_pmu;
extern struct power_pmu power5_pmu;
extern struct power_pmu power5p_pmu;
extern struct power_pmu power6_pmu;
extern struct power_pmu power7_pmu;
static int init_perf_counters(void)
int register_power_pmu(struct power_pmu *pmu)
{
unsigned long pvr;
if (ppmu)
return -EBUSY; /* something's already registered */
/* XXX should get this from cputable */
pvr = mfspr(SPRN_PVR);
switch (PVR_VER(pvr)) {
case PV_POWER4:
case PV_POWER4p:
ppmu = &power4_pmu;
break;
case PV_970:
case PV_970FX:
case PV_970MP:
ppmu = &ppc970_pmu;
break;
case PV_POWER5:
ppmu = &power5_pmu;
break;
case PV_POWER5p:
ppmu = &power5p_pmu;
break;
case 0x3e:
ppmu = &power6_pmu;
break;
case 0x3f:
ppmu = &power7_pmu;
break;
}
ppmu = pmu;
pr_info("%s performance monitor hardware support registered\n",
pmu->name);
#ifdef MSR_HV
/*
* Use FCHV to ignore kernel events if MSR.HV is set.
*/
if (mfmsr() & MSR_HV)
freeze_counters_kernel = MMCR0_FCHV;
#endif /* CONFIG_PPC64 */
return 0;
}
arch_initcall(init_perf_counters);

89
arch/powerpc/kernel/power4-pmu.c
View File

@ -10,7 +10,9 @@
*/
#include <linux/kernel.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
/*
* Bits in event code for POWER4
@ -179,22 +181,22 @@ static short mmcr1_adder_bits[8] = {
*/
static struct unitinfo {
u64 value, mask;
int unit;
int lowerbit;
unsigned long value, mask;
int unit;
int lowerbit;
} p4_unitinfo[16] = {
[PM_FPU] = { 0x44000000000000ull, 0x88000000000000ull, PM_FPU, 0 },
[PM_ISU1] = { 0x20080000000000ull, 0x88000000000000ull, PM_ISU1, 0 },
[PM_FPU] = { 0x44000000000000ul, 0x88000000000000ul, PM_FPU, 0 },
[PM_ISU1] = { 0x20080000000000ul, 0x88000000000000ul, PM_ISU1, 0 },
[PM_ISU1_ALT] =
{ 0x20080000000000ull, 0x88000000000000ull, PM_ISU1, 0 },
[PM_IFU] = { 0x02200000000000ull, 0x08820000000000ull, PM_IFU, 41 },
{ 0x20080000000000ul, 0x88000000000000ul, PM_ISU1, 0 },
[PM_IFU] = { 0x02200000000000ul, 0x08820000000000ul, PM_IFU, 41 },
[PM_IFU_ALT] =
{ 0x02200000000000ull, 0x08820000000000ull, PM_IFU, 41 },
[PM_IDU0] = { 0x10100000000000ull, 0x80840000000000ull, PM_IDU0, 1 },
[PM_ISU2] = { 0x10140000000000ull, 0x80840000000000ull, PM_ISU2, 0 },
[PM_LSU0] = { 0x01400000000000ull, 0x08800000000000ull, PM_LSU0, 0 },
[PM_LSU1] = { 0x00000000000000ull, 0x00010000000000ull, PM_LSU1, 40 },
[PM_GPS] = { 0x00000000000000ull, 0x00000000000000ull, PM_GPS, 0 }
{ 0x02200000000000ul, 0x08820000000000ul, PM_IFU, 41 },
[PM_IDU0] = { 0x10100000000000ul, 0x80840000000000ul, PM_IDU0, 1 },
[PM_ISU2] = { 0x10140000000000ul, 0x80840000000000ul, PM_ISU2, 0 },
[PM_LSU0] = { 0x01400000000000ul, 0x08800000000000ul, PM_LSU0, 0 },
[PM_LSU1] = { 0x00000000000000ul, 0x00010000000000ul, PM_LSU1, 40 },
[PM_GPS] = { 0x00000000000000ul, 0x00000000000000ul, PM_GPS, 0 }
};
static unsigned char direct_marked_event[8] = {
@ -249,10 +251,11 @@ static int p4_marked_instr_event(u64 event)
return (mask >> (byte * 8 + bit)) & 1;
}
static int p4_get_constraint(u64 event, u64 *maskp, u64 *valp)
static int p4_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, byte, unit, lower, sh;
u64 mask = 0, value = 0;
unsigned long mask = 0, value = 0;
int grp = -1;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
@ -282,14 +285,14 @@ static int p4_get_constraint(u64 event, u64 *maskp, u64 *valp)
value |= p4_unitinfo[unit].value;
sh = p4_unitinfo[unit].lowerbit;
if (sh > 1)
value |= (u64)lower << sh;
value |= (unsigned long)lower << sh;
else if (lower != sh)
return -1;
unit = p4_unitinfo[unit].unit;
/* Set byte lane select field */
mask |= 0xfULL << (28 - 4 * byte);
value |= (u64)unit << (28 - 4 * byte);
value |= (unsigned long)unit << (28 - 4 * byte);
}
if (grp == 0) {
/* increment PMC1/2/5/6 field */
@ -353,9 +356,9 @@ static int p4_get_alternatives(u64 event, unsigned int flags, u64 alt[])
}
static int p4_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], u64 mmcr[])
unsigned int hwc[], unsigned long mmcr[])
{
u64 mmcr0 = 0, mmcr1 = 0, mmcra = 0;
unsigned long mmcr0 = 0, mmcr1 = 0, mmcra = 0;
unsigned int pmc, unit, byte, psel, lower;
unsigned int ttm, grp;
unsigned int pmc_inuse = 0;
@ -429,9 +432,11 @@ static int p4_compute_mmcr(u64 event[], int n_ev,
return -1;
/* Set TTMxSEL fields. Note, units 1-3 => TTM0SEL codes 0-2 */
mmcr1 |= (u64)(unituse[3] * 2 + unituse[2]) << MMCR1_TTM0SEL_SH;
mmcr1 |= (u64)(unituse[7] * 3 + unituse[6] * 2) << MMCR1_TTM1SEL_SH;
mmcr1 |= (u64)unituse[9] << MMCR1_TTM2SEL_SH;
mmcr1 |= (unsigned long)(unituse[3] * 2 + unituse[2])
<< MMCR1_TTM0SEL_SH;
mmcr1 |= (unsigned long)(unituse[7] * 3 + unituse[6] * 2)
<< MMCR1_TTM1SEL_SH;
mmcr1 |= (unsigned long)unituse[9] << MMCR1_TTM2SEL_SH;
/* Set TTCxSEL fields. */
if (unitlower & 0xe)
@ -456,7 +461,8 @@ static int p4_compute_mmcr(u64 event[], int n_ev,
ttm = unit - 1; /* 2->1, 3->2 */
else
ttm = unit >> 2;
mmcr1 |= (u64)ttm << (MMCR1_TD_CP_DBG0SEL_SH - 2*byte);
mmcr1 |= (unsigned long)ttm
<< (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
}
}
@ -519,7 +525,7 @@ static int p4_compute_mmcr(u64 event[], int n_ev,
return 0;
}
static void p4_disable_pmc(unsigned int pmc, u64 mmcr[])
static void p4_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
/*
* Setting the PMCxSEL field to 0 disables PMC x.
@ -583,16 +589,27 @@ static int power4_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
struct power_pmu power4_pmu = {
.n_counter = 8,
.max_alternatives = 5,
.add_fields = 0x0000001100005555ull,
.test_adder = 0x0011083300000000ull,
.compute_mmcr = p4_compute_mmcr,
.get_constraint = p4_get_constraint,
.get_alternatives = p4_get_alternatives,
.disable_pmc = p4_disable_pmc,
.n_generic = ARRAY_SIZE(p4_generic_events),
.generic_events = p4_generic_events,
.cache_events = &power4_cache_events,
static struct power_pmu power4_pmu = {
.name = "POWER4/4+",
.n_counter = 8,
.max_alternatives = 5,
.add_fields = 0x0000001100005555ul,
.test_adder = 0x0011083300000000ul,
.compute_mmcr = p4_compute_mmcr,
.get_constraint = p4_get_constraint,
.get_alternatives = p4_get_alternatives,
.disable_pmc = p4_disable_pmc,
.n_generic = ARRAY_SIZE(p4_generic_events),
.generic_events = p4_generic_events,
.cache_events = &power4_cache_events,
};
static int init_power4_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power4"))
return -ENODEV;
return register_power_pmu(&power4_pmu);
}
arch_initcall(init_power4_pmu);

95
arch/powerpc/kernel/power5+-pmu.c
View File

@ -10,7 +10,9 @@
*/
#include <linux/kernel.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
/*
* Bits in event code for POWER5+ (POWER5 GS) and POWER5++ (POWER5 GS DD3)
@ -126,20 +128,21 @@ static const int grsel_shift[8] = {
};
/* Masks and values for using events from the various units */
static u64 unit_cons[PM_LASTUNIT+1][2] = {
[PM_FPU] = { 0x3200000000ull, 0x0100000000ull },
[PM_ISU0] = { 0x0200000000ull, 0x0080000000ull },
[PM_ISU1] = { 0x3200000000ull, 0x3100000000ull },
[PM_IFU] = { 0x3200000000ull, 0x2100000000ull },
[PM_IDU] = { 0x0e00000000ull, 0x0040000000ull },
[PM_GRS] = { 0x0e00000000ull, 0x0c40000000ull },
static unsigned long unit_cons[PM_LASTUNIT+1][2] = {
[PM_FPU] = { 0x3200000000ul, 0x0100000000ul },
[PM_ISU0] = { 0x0200000000ul, 0x0080000000ul },
[PM_ISU1] = { 0x3200000000ul, 0x3100000000ul },
[PM_IFU] = { 0x3200000000ul, 0x2100000000ul },
[PM_IDU] = { 0x0e00000000ul, 0x0040000000ul },
[PM_GRS] = { 0x0e00000000ul, 0x0c40000000ul },
};
static int power5p_get_constraint(u64 event, u64 *maskp, u64 *valp)
static int power5p_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, byte, unit, sh;
int bit, fmask;
u64 mask = 0, value = 0;
unsigned long mask = 0, value = 0;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
if (pmc) {
@ -171,17 +174,18 @@ static int power5p_get_constraint(u64 event, u64 *maskp, u64 *valp)
bit = event & 7;
fmask = (bit == 6)? 7: 3;
sh = grsel_shift[bit];
mask |= (u64)fmask << sh;
value |= (u64)((event >> PM_GRS_SH) & fmask) << sh;
mask |= (unsigned long)fmask << sh;
value |= (unsigned long)((event >> PM_GRS_SH) & fmask)
<< sh;
}
/* Set byte lane select field */
mask |= 0xfULL << (24 - 4 * byte);
value |= (u64)unit << (24 - 4 * byte);
mask |= 0xfUL << (24 - 4 * byte);
value |= (unsigned long)unit << (24 - 4 * byte);
}
if (pmc < 5) {
/* need a counter from PMC1-4 set */
mask |= 0x8000000000000ull;
value |= 0x1000000000000ull;
mask |= 0x8000000000000ul;
value |= 0x1000000000000ul;
}
*maskp = mask;
*valp = value;
@ -452,10 +456,10 @@ static int power5p_marked_instr_event(u64 event)
}
static int power5p_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], u64 mmcr[])
unsigned int hwc[], unsigned long mmcr[])
{
u64 mmcr1 = 0;
u64 mmcra = 0;
unsigned long mmcr1 = 0;
unsigned long mmcra = 0;
unsigned int pmc, unit, byte, psel;
unsigned int ttm;
int i, isbus, bit, grsel;
@ -517,7 +521,7 @@ static int power5p_compute_mmcr(u64 event[], int n_ev,
continue;
if (ttmuse++)
return -1;
mmcr1 |= (u64)i << MMCR1_TTM0SEL_SH;
mmcr1 |= (unsigned long)i << MMCR1_TTM0SEL_SH;
}
ttmuse = 0;
for (; i <= PM_GRS; ++i) {
@ -525,7 +529,7 @@ static int power5p_compute_mmcr(u64 event[], int n_ev,
continue;
if (ttmuse++)
return -1;
mmcr1 |= (u64)(i & 3) << MMCR1_TTM1SEL_SH;
mmcr1 |= (unsigned long)(i & 3) << MMCR1_TTM1SEL_SH;
}
if (ttmuse > 1)
return -1;
@ -540,10 +544,11 @@ static int power5p_compute_mmcr(u64 event[], int n_ev,
unit = PM_ISU0_ALT;
} else if (unit == PM_LSU1 + 1) {
/* select lower word of LSU1 for this byte */
mmcr1 |= 1ull << (MMCR1_TTM3SEL_SH + 3 - byte);
mmcr1 |= 1ul << (MMCR1_TTM3SEL_SH + 3 - byte);
}
ttm = unit >> 2;
mmcr1 |= (u64)ttm << (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
mmcr1 |= (unsigned long)ttm
<< (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
}
/* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */
@ -568,7 +573,7 @@ static int power5p_compute_mmcr(u64 event[], int n_ev,
if (isbus && (byte & 2) &&
(psel == 8 || psel == 0x10 || psel == 0x28))
/* add events on higher-numbered bus */
mmcr1 |= 1ull << (MMCR1_PMC1_ADDER_SEL_SH - pmc);
mmcr1 |= 1ul << (MMCR1_PMC1_ADDER_SEL_SH - pmc);
} else {
/* Instructions or run cycles on PMC5/6 */
--pmc;
@ -576,7 +581,7 @@ static int power5p_compute_mmcr(u64 event[], int n_ev,
if (isbus && unit == PM_GRS) {
bit = psel & 7;
grsel = (event[i] >> PM_GRS_SH) & PM_GRS_MSK;
mmcr1 |= (u64)grsel << grsel_shift[bit];
mmcr1 |= (unsigned long)grsel << grsel_shift[bit];
}
if (power5p_marked_instr_event(event[i]))
mmcra |= MMCRA_SAMPLE_ENABLE;
@ -599,7 +604,7 @@ static int power5p_compute_mmcr(u64 event[], int n_ev,
return 0;
}
static void power5p_disable_pmc(unsigned int pmc, u64 mmcr[])
static void power5p_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
if (pmc <= 3)
mmcr[1] &= ~(0x7fUL << MMCR1_PMCSEL_SH(pmc));
@ -654,18 +659,30 @@ static int power5p_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
struct power_pmu power5p_pmu = {
.n_counter = 6,
.max_alternatives = MAX_ALT,
.add_fields = 0x7000000000055ull,
.test_adder = 0x3000040000000ull,
.compute_mmcr = power5p_compute_mmcr,
.get_constraint = power5p_get_constraint,
.get_alternatives = power5p_get_alternatives,
.disable_pmc = power5p_disable_pmc,
.limited_pmc_event = power5p_limited_pmc_event,
.flags = PPMU_LIMITED_PMC5_6,
.n_generic = ARRAY_SIZE(power5p_generic_events),
.generic_events = power5p_generic_events,
.cache_events = &power5p_cache_events,
static struct power_pmu power5p_pmu = {
.name = "POWER5+/++",
.n_counter = 6,
.max_alternatives = MAX_ALT,
.add_fields = 0x7000000000055ul,
.test_adder = 0x3000040000000ul,
.compute_mmcr = power5p_compute_mmcr,
.get_constraint = power5p_get_constraint,
.get_alternatives = power5p_get_alternatives,
.disable_pmc = power5p_disable_pmc,
.limited_pmc_event = power5p_limited_pmc_event,
.flags = PPMU_LIMITED_PMC5_6,
.n_generic = ARRAY_SIZE(power5p_generic_events),
.generic_events = power5p_generic_events,
.cache_events = &power5p_cache_events,
};
static int init_power5p_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5+")
&& strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5++"))
return -ENODEV;
return register_power_pmu(&power5p_pmu);
}
arch_initcall(init_power5p_pmu);

98
arch/powerpc/kernel/power5-pmu.c
View File

@ -10,7 +10,9 @@
*/
#include <linux/kernel.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
/*
* Bits in event code for POWER5 (not POWER5++)
@ -130,20 +132,21 @@ static const int grsel_shift[8] = {
};
/* Masks and values for using events from the various units */
static u64 unit_cons[PM_LASTUNIT+1][2] = {
[PM_FPU] = { 0xc0002000000000ull, 0x00001000000000ull },
[PM_ISU0] = { 0x00002000000000ull, 0x00000800000000ull },
[PM_ISU1] = { 0xc0002000000000ull, 0xc0001000000000ull },
[PM_IFU] = { 0xc0002000000000ull, 0x80001000000000ull },
[PM_IDU] = { 0x30002000000000ull, 0x00000400000000ull },
[PM_GRS] = { 0x30002000000000ull, 0x30000400000000ull },
static unsigned long unit_cons[PM_LASTUNIT+1][2] = {
[PM_FPU] = { 0xc0002000000000ul, 0x00001000000000ul },
[PM_ISU0] = { 0x00002000000000ul, 0x00000800000000ul },
[PM_ISU1] = { 0xc0002000000000ul, 0xc0001000000000ul },
[PM_IFU] = { 0xc0002000000000ul, 0x80001000000000ul },
[PM_IDU] = { 0x30002000000000ul, 0x00000400000000ul },
[PM_GRS] = { 0x30002000000000ul, 0x30000400000000ul },
};
static int power5_get_constraint(u64 event, u64 *maskp, u64 *valp)
static int power5_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, byte, unit, sh;
int bit, fmask;
u64 mask = 0, value = 0;
unsigned long mask = 0, value = 0;
int grp = -1;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
@ -178,8 +181,9 @@ static int power5_get_constraint(u64 event, u64 *maskp, u64 *valp)
bit = event & 7;
fmask = (bit == 6)? 7: 3;
sh = grsel_shift[bit];
mask |= (u64)fmask << sh;
value |= (u64)((event >> PM_GRS_SH) & fmask) << sh;
mask |= (unsigned long)fmask << sh;
value |= (unsigned long)((event >> PM_GRS_SH) & fmask)
<< sh;
}
/*
* Bus events on bytes 0 and 2 can be counted
@ -188,22 +192,22 @@ static int power5_get_constraint(u64 event, u64 *maskp, u64 *valp)
if (!pmc)
grp = byte & 1;
/* Set byte lane select field */
mask |= 0xfULL << (24 - 4 * byte);
value |= (u64)unit << (24 - 4 * byte);
mask |= 0xfUL << (24 - 4 * byte);
value |= (unsigned long)unit << (24 - 4 * byte);
}
if (grp == 0) {
/* increment PMC1/2 field */
mask |= 0x200000000ull;
value |= 0x080000000ull;
mask |= 0x200000000ul;
value |= 0x080000000ul;
} else if (grp == 1) {
/* increment PMC3/4 field */
mask |= 0x40000000ull;
value |= 0x10000000ull;
mask |= 0x40000000ul;
value |= 0x10000000ul;
}
if (pmc < 5) {
/* need a counter from PMC1-4 set */
mask |= 0x8000000000000ull;
value |= 0x1000000000000ull;
mask |= 0x8000000000000ul;
value |= 0x1000000000000ul;
}
*maskp = mask;
*valp = value;
@ -383,10 +387,10 @@ static int power5_marked_instr_event(u64 event)
}
static int power5_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], u64 mmcr[])
unsigned int hwc[], unsigned long mmcr[])
{
u64 mmcr1 = 0;
u64 mmcra = 0;
unsigned long mmcr1 = 0;
unsigned long mmcra = 0;
unsigned int pmc, unit, byte, psel;
unsigned int ttm, grp;
int i, isbus, bit, grsel;
@ -457,7 +461,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
continue;
if (ttmuse++)
return -1;
mmcr1 |= (u64)i << MMCR1_TTM0SEL_SH;
mmcr1 |= (unsigned long)i << MMCR1_TTM0SEL_SH;
}
ttmuse = 0;
for (; i <= PM_GRS; ++i) {
@ -465,7 +469,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
continue;
if (ttmuse++)
return -1;
mmcr1 |= (u64)(i & 3) << MMCR1_TTM1SEL_SH;
mmcr1 |= (unsigned long)(i & 3) << MMCR1_TTM1SEL_SH;
}
if (ttmuse > 1)
return -1;
@ -480,10 +484,11 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
unit = PM_ISU0_ALT;
} else if (unit == PM_LSU1 + 1) {
/* select lower word of LSU1 for this byte */
mmcr1 |= 1ull << (MMCR1_TTM3SEL_SH + 3 - byte);
mmcr1 |= 1ul << (MMCR1_TTM3SEL_SH + 3 - byte);
}
ttm = unit >> 2;
mmcr1 |= (u64)ttm << (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
mmcr1 |= (unsigned long)ttm
<< (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
}
/* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */
@ -513,7 +518,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
--pmc;
if ((psel == 8 || psel == 0x10) && isbus && (byte & 2))
/* add events on higher-numbered bus */
mmcr1 |= 1ull << (MMCR1_PMC1_ADDER_SEL_SH - pmc);
mmcr1 |= 1ul << (MMCR1_PMC1_ADDER_SEL_SH - pmc);
} else {
/* Instructions or run cycles on PMC5/6 */
--pmc;
@ -521,7 +526,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
if (isbus && unit == PM_GRS) {
bit = psel & 7;
grsel = (event[i] >> PM_GRS_SH) & PM_GRS_MSK;
mmcr1 |= (u64)grsel << grsel_shift[bit];
mmcr1 |= (unsigned long)grsel << grsel_shift[bit];
}
if (power5_marked_instr_event(event[i]))
mmcra |= MMCRA_SAMPLE_ENABLE;
@ -541,7 +546,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
return 0;
}
static void power5_disable_pmc(unsigned int pmc, u64 mmcr[])
static void power5_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
if (pmc <= 3)
mmcr[1] &= ~(0x7fUL << MMCR1_PMCSEL_SH(pmc));
@ -596,16 +601,27 @@ static int power5_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
struct power_pmu power5_pmu = {
.n_counter = 6,
.max_alternatives = MAX_ALT,
.add_fields = 0x7000090000555ull,
.test_adder = 0x3000490000000ull,
.compute_mmcr = power5_compute_mmcr,
.get_constraint = power5_get_constraint,
.get_alternatives = power5_get_alternatives,
.disable_pmc = power5_disable_pmc,
.n_generic = ARRAY_SIZE(power5_generic_events),
.generic_events = power5_generic_events,
.cache_events = &power5_cache_events,
static struct power_pmu power5_pmu = {
.name = "POWER5",
.n_counter = 6,
.max_alternatives = MAX_ALT,
.add_fields = 0x7000090000555ul,
.test_adder = 0x3000490000000ul,
.compute_mmcr = power5_compute_mmcr,
.get_constraint = power5_get_constraint,
.get_alternatives = power5_get_alternatives,
.disable_pmc = power5_disable_pmc,
.n_generic = ARRAY_SIZE(power5_generic_events),
.generic_events = power5_generic_events,
.cache_events = &power5_cache_events,
};
static int init_power5_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5"))
return -ENODEV;
return register_power_pmu(&power5_pmu);
}
arch_initcall(init_power5_pmu);

72
arch/powerpc/kernel/power6-pmu.c
View File

@ -10,7 +10,9 @@
*/
#include <linux/kernel.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
/*
* Bits in event code for POWER6
@ -41,9 +43,9 @@
#define MMCR1_NESTSEL_SH 45
#define MMCR1_NESTSEL_MSK 0x7
#define MMCR1_NESTSEL(m) (((m) >> MMCR1_NESTSEL_SH) & MMCR1_NESTSEL_MSK)
#define MMCR1_PMC1_LLA ((u64)1 << 44)
#define MMCR1_PMC1_LLA_VALUE ((u64)1 << 39)
#define MMCR1_PMC1_ADDR_SEL ((u64)1 << 35)
#define MMCR1_PMC1_LLA (1ul << 44)
#define MMCR1_PMC1_LLA_VALUE (1ul << 39)
#define MMCR1_PMC1_ADDR_SEL (1ul << 35)
#define MMCR1_PMC1SEL_SH 24
#define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8)
#define MMCR1_PMCSEL_MSK 0xff
@ -173,10 +175,10 @@ static int power6_marked_instr_event(u64 event)
* Assign PMC numbers and compute MMCR1 value for a set of events
*/
static int p6_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], u64 mmcr[])
unsigned int hwc[], unsigned long mmcr[])
{
u64 mmcr1 = 0;
u64 mmcra = 0;
unsigned long mmcr1 = 0;
unsigned long mmcra = 0;
int i;
unsigned int pmc, ev, b, u, s, psel;
unsigned int ttmset = 0;
@ -215,7 +217,7 @@ static int p6_compute_mmcr(u64 event[], int n_ev,
/* check for conflict on this byte of event bus */
if ((ttmset & (1 << b)) && MMCR1_TTMSEL(mmcr1, b) != u)
return -1;
mmcr1 |= (u64)u << MMCR1_TTMSEL_SH(b);
mmcr1 |= (unsigned long)u << MMCR1_TTMSEL_SH(b);
ttmset |= 1 << b;
if (u == 5) {
/* Nest events have a further mux */
@ -224,7 +226,7 @@ static int p6_compute_mmcr(u64 event[], int n_ev,
MMCR1_NESTSEL(mmcr1) != s)
return -1;
ttmset |= 0x10;
mmcr1 |= (u64)s << MMCR1_NESTSEL_SH;
mmcr1 |= (unsigned long)s << MMCR1_NESTSEL_SH;
}
if (0x30 <= psel && psel <= 0x3d) {
/* these need the PMCx_ADDR_SEL bits */
@ -243,7 +245,7 @@ static int p6_compute_mmcr(u64 event[], int n_ev,
if (power6_marked_instr_event(event[i]))
mmcra |= MMCRA_SAMPLE_ENABLE;
if (pmc < 4)
mmcr1 |= (u64)psel << MMCR1_PMCSEL_SH(pmc);
mmcr1 |= (unsigned long)psel << MMCR1_PMCSEL_SH(pmc);
}
mmcr[0] = 0;
if (pmc_inuse & 1)
@ -265,10 +267,11 @@ static int p6_compute_mmcr(u64 event[], int n_ev,
* 20-23, 24-27, 28-31 ditto for bytes 1, 2, 3
* 32-34 select field: nest (subunit) event selector
*/
static int p6_get_constraint(u64 event, u64 *maskp, u64 *valp)
static int p6_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, byte, sh, subunit;
u64 mask = 0, value = 0;
unsigned long mask = 0, value = 0;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
if (pmc) {
@ -282,11 +285,11 @@ static int p6_get_constraint(u64 event, u64 *maskp, u64 *valp)
byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;
sh = byte * 4 + (16 - PM_UNIT_SH);
mask |= PM_UNIT_MSKS << sh;
value |= (u64)(event & PM_UNIT_MSKS) << sh;
value |= (unsigned long)(event & PM_UNIT_MSKS) << sh;
if ((event & PM_UNIT_MSKS) == (5 << PM_UNIT_SH)) {
subunit = (event >> PM_SUBUNIT_SH) & PM_SUBUNIT_MSK;
mask |= (u64)PM_SUBUNIT_MSK << 32;
value |= (u64)subunit << 32;
mask |= (unsigned long)PM_SUBUNIT_MSK << 32;
value |= (unsigned long)subunit << 32;
}
}
if (pmc <= 4) {
@ -458,7 +461,7 @@ static int p6_get_alternatives(u64 event, unsigned int flags, u64 alt[])
return nalt;
}
static void p6_disable_pmc(unsigned int pmc, u64 mmcr[])
static void p6_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
/* Set PMCxSEL to 0 to disable PMCx */
if (pmc <= 3)
@ -515,18 +518,29 @@ static int power6_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
struct power_pmu power6_pmu = {
.n_counter = 6,
.max_alternatives = MAX_ALT,
.add_fields = 0x1555,
.test_adder = 0x3000,
.compute_mmcr = p6_compute_mmcr,
.get_constraint = p6_get_constraint,
.get_alternatives = p6_get_alternatives,
.disable_pmc = p6_disable_pmc,
.limited_pmc_event = p6_limited_pmc_event,
.flags = PPMU_LIMITED_PMC5_6 | PPMU_ALT_SIPR,
.n_generic = ARRAY_SIZE(power6_generic_events),
.generic_events = power6_generic_events,
.cache_events = &power6_cache_events,
static struct power_pmu power6_pmu = {
.name = "POWER6",
.n_counter = 6,
.max_alternatives = MAX_ALT,
.add_fields = 0x1555,
.test_adder = 0x3000,
.compute_mmcr = p6_compute_mmcr,
.get_constraint = p6_get_constraint,
.get_alternatives = p6_get_alternatives,
.disable_pmc = p6_disable_pmc,
.limited_pmc_event = p6_limited_pmc_event,
.flags = PPMU_LIMITED_PMC5_6 | PPMU_ALT_SIPR,
.n_generic = ARRAY_SIZE(power6_generic_events),
.generic_events = power6_generic_events,
.cache_events = &power6_cache_events,
};
static int init_power6_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power6"))
return -ENODEV;
return register_power_pmu(&power6_pmu);
}
arch_initcall(init_power6_pmu);

61
arch/powerpc/kernel/power7-pmu.c
View File

@ -10,7 +10,9 @@
*/
#include <linux/kernel.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
/*
* Bits in event code for POWER7
@ -71,10 +73,11 @@
* 0-9: Count of events needing PMC1..PMC5
*/
static int power7_get_constraint(u64 event, u64 *maskp, u64 *valp)
static int power7_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, sh;
u64 mask = 0, value = 0;
unsigned long mask = 0, value = 0;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
if (pmc) {
@ -224,10 +227,10 @@ static int power7_marked_instr_event(u64 event)
}
static int power7_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], u64 mmcr[])
unsigned int hwc[], unsigned long mmcr[])
{
u64 mmcr1 = 0;
u64 mmcra = 0;
unsigned long mmcr1 = 0;
unsigned long mmcra = 0;
unsigned int pmc, unit, combine, l2sel, psel;
unsigned int pmc_inuse = 0;
int i;
@ -265,11 +268,14 @@ static int power7_compute_mmcr(u64 event[], int n_ev,
--pmc;
}
if (pmc <= 3) {
mmcr1 |= (u64) unit << (MMCR1_TTM0SEL_SH - 4 * pmc);
mmcr1 |= (u64) combine << (MMCR1_PMC1_COMBINE_SH - pmc);
mmcr1 |= (unsigned long) unit
<< (MMCR1_TTM0SEL_SH - 4 * pmc);
mmcr1 |= (unsigned long) combine
<< (MMCR1_PMC1_COMBINE_SH - pmc);
mmcr1 |= psel << MMCR1_PMCSEL_SH(pmc);
if (unit == 6) /* L2 events */
mmcr1 |= (u64) l2sel << MMCR1_L2SEL_SH;
mmcr1 |= (unsigned long) l2sel
<< MMCR1_L2SEL_SH;
}
if (power7_marked_instr_event(event[i]))
mmcra |= MMCRA_SAMPLE_ENABLE;
@ -287,10 +293,10 @@ static int power7_compute_mmcr(u64 event[], int n_ev,
return 0;
}
static void power7_disable_pmc(unsigned int pmc, u64 mmcr[])
static void power7_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
if (pmc <= 3)
mmcr[1] &= ~(0xffULL << MMCR1_PMCSEL_SH(pmc));
mmcr[1] &= ~(0xffUL << MMCR1_PMCSEL_SH(pmc));
}
static int power7_generic_events[] = {
@ -342,16 +348,27 @@ static int power7_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
struct power_pmu power7_pmu = {
.n_counter = 6,
.max_alternatives = MAX_ALT + 1,
.add_fields = 0x1555ull,
.test_adder = 0x3000ull,
.compute_mmcr = power7_compute_mmcr,
.get_constraint = power7_get_constraint,
.get_alternatives = power7_get_alternatives,
.disable_pmc = power7_disable_pmc,
.n_generic = ARRAY_SIZE(power7_generic_events),
.generic_events = power7_generic_events,
.cache_events = &power7_cache_events,
static struct power_pmu power7_pmu = {
.name = "POWER7",
.n_counter = 6,
.max_alternatives = MAX_ALT + 1,
.add_fields = 0x1555ul,
.test_adder = 0x3000ul,
.compute_mmcr = power7_compute_mmcr,
.get_constraint = power7_get_constraint,
.get_alternatives = power7_get_alternatives,
.disable_pmc = power7_disable_pmc,
.n_generic = ARRAY_SIZE(power7_generic_events),
.generic_events = power7_generic_events,
.cache_events = &power7_cache_events,
};
static int init_power7_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power7"))
return -ENODEV;
return register_power_pmu(&power7_pmu);
}
arch_initcall(init_power7_pmu);

63
arch/powerpc/kernel/ppc970-pmu.c
View File

@ -10,7 +10,9 @@
*/
#include <linux/string.h>
#include <linux/perf_counter.h>
#include <linux/string.h>
#include <asm/reg.h>
#include <asm/cputable.h>
/*
* Bits in event code for PPC970
@ -183,7 +185,7 @@ static int p970_marked_instr_event(u64 event)
}
/* Masks and values for using events from the various units */
static u64 unit_cons[PM_LASTUNIT+1][2] = {
static unsigned long unit_cons[PM_LASTUNIT+1][2] = {
[PM_FPU] = { 0xc80000000000ull, 0x040000000000ull },
[PM_VPU] = { 0xc80000000000ull, 0xc40000000000ull },
[PM_ISU] = { 0x080000000000ull, 0x020000000000ull },
@ -192,10 +194,11 @@ static u64 unit_cons[PM_LASTUNIT+1][2] = {
[PM_STS] = { 0x380000000000ull, 0x310000000000ull },
};
static int p970_get_constraint(u64 event, u64 *maskp, u64 *valp)
static int p970_get_constraint(u64 event, unsigned long *maskp,
unsigned long *valp)
{
int pmc, byte, unit, sh, spcsel;
u64 mask = 0, value = 0;
unsigned long mask = 0, value = 0;
int grp = -1;
pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
@ -222,7 +225,7 @@ static int p970_get_constraint(u64 event, u64 *maskp, u64 *valp)
grp = byte & 1;
/* Set byte lane select field */
mask |= 0xfULL << (28 - 4 * byte);
value |= (u64)unit << (28 - 4 * byte);
value |= (unsigned long)unit << (28 - 4 * byte);
}
if (grp == 0) {
/* increment PMC1/2/5/6 field */
@ -236,7 +239,7 @@ static int p970_get_constraint(u64 event, u64 *maskp, u64 *valp)
spcsel = (event >> PM_SPCSEL_SH) & PM_SPCSEL_MSK;
if (spcsel) {
mask |= 3ull << 48;
value |= (u64)spcsel << 48;
value |= (unsigned long)spcsel << 48;
}
*maskp = mask;
*valp = value;
@ -257,9 +260,9 @@ static int p970_get_alternatives(u64 event, unsigned int flags, u64 alt[])
}
static int p970_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], u64 mmcr[])
unsigned int hwc[], unsigned long mmcr[])
{
u64 mmcr0 = 0, mmcr1 = 0, mmcra = 0;
unsigned long mmcr0 = 0, mmcr1 = 0, mmcra = 0;
unsigned int pmc, unit, byte, psel;
unsigned int ttm, grp;
unsigned int pmc_inuse = 0;
@ -320,7 +323,7 @@ static int p970_compute_mmcr(u64 event[], int n_ev,
continue;
ttm = unitmap[i];
++ttmuse[(ttm >> 2) & 1];
mmcr1 |= (u64)(ttm & ~4) << MMCR1_TTM1SEL_SH;
mmcr1 |= (unsigned long)(ttm & ~4) << MMCR1_TTM1SEL_SH;
}
/* Check only one unit per TTMx */
if (ttmuse[0] > 1 || ttmuse[1] > 1)
@ -340,7 +343,8 @@ static int p970_compute_mmcr(u64 event[], int n_ev,
if (unit == PM_LSU1L && byte >= 2)
mmcr1 |= 1ull << (MMCR1_TTM3SEL_SH + 3 - byte);
}
mmcr1 |= (u64)ttm << (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
mmcr1 |= (unsigned long)ttm
<< (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
}
/* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */
@ -386,7 +390,8 @@ static int p970_compute_mmcr(u64 event[], int n_ev,
for (pmc = 0; pmc < 2; ++pmc)
mmcr0 |= pmcsel[pmc] << (MMCR0_PMC1SEL_SH - 7 * pmc);
for (; pmc < 8; ++pmc)
mmcr1 |= (u64)pmcsel[pmc] << (MMCR1_PMC3SEL_SH - 5 * (pmc - 2));
mmcr1 |= (unsigned long)pmcsel[pmc]
<< (MMCR1_PMC3SEL_SH - 5 * (pmc - 2));
if (pmc_inuse & 1)
mmcr0 |= MMCR0_PMC1CE;
if (pmc_inuse & 0xfe)
@ -401,7 +406,7 @@ static int p970_compute_mmcr(u64 event[], int n_ev,
return 0;
}
static void p970_disable_pmc(unsigned int pmc, u64 mmcr[])
static void p970_disable_pmc(unsigned int pmc, unsigned long mmcr[])
{
int shift, i;
@ -467,16 +472,28 @@ static int ppc970_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
struct power_pmu ppc970_pmu = {
.n_counter = 8,
.max_alternatives = 2,
.add_fields = 0x001100005555ull,
.test_adder = 0x013300000000ull,
.compute_mmcr = p970_compute_mmcr,
.get_constraint = p970_get_constraint,
.get_alternatives = p970_get_alternatives,
.disable_pmc = p970_disable_pmc,
.n_generic = ARRAY_SIZE(ppc970_generic_events),
.generic_events = ppc970_generic_events,
.cache_events = &ppc970_cache_events,
static struct power_pmu ppc970_pmu = {
.name = "PPC970/FX/MP",
.n_counter = 8,
.max_alternatives = 2,
.add_fields = 0x001100005555ull,
.test_adder = 0x013300000000ull,
.compute_mmcr = p970_compute_mmcr,
.get_constraint = p970_get_constraint,
.get_alternatives = p970_get_alternatives,
.disable_pmc = p970_disable_pmc,
.n_generic = ARRAY_SIZE(ppc970_generic_events),
.generic_events = ppc970_generic_events,
.cache_events = &ppc970_cache_events,
};
static int init_ppc970_pmu(void)
{
if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/970")
&& strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/970MP"))
return -ENODEV;
return register_power_pmu(&ppc970_pmu);
}
arch_initcall(init_ppc970_pmu);

25
arch/powerpc/kernel/time.c
View File

@ -53,6 +53,7 @@
#include <linux/posix-timers.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/perf_counter.h>
#include <asm/io.h>
#include <asm/processor.h>
@ -525,6 +526,26 @@ void __init iSeries_time_init_early(void)
}
#endif /* CONFIG_PPC_ISERIES */
#if defined(CONFIG_PERF_COUNTERS) && defined(CONFIG_PPC32)
DEFINE_PER_CPU(u8, perf_counter_pending);
void set_perf_counter_pending(void)
{
get_cpu_var(perf_counter_pending) = 1;
set_dec(1);
put_cpu_var(perf_counter_pending);
}
#define test_perf_counter_pending() __get_cpu_var(perf_counter_pending)
#define clear_perf_counter_pending() __get_cpu_var(perf_counter_pending) = 0
#else /* CONFIG_PERF_COUNTERS && CONFIG_PPC32 */
#define test_perf_counter_pending() 0
#define clear_perf_counter_pending()
#endif /* CONFIG_PERF_COUNTERS && CONFIG_PPC32 */
/*
* For iSeries shared processors, we have to let the hypervisor
* set the hardware decrementer. We set a virtual decrementer
@ -551,6 +572,10 @@ void timer_interrupt(struct pt_regs * regs)
set_dec(DECREMENTER_MAX);
#ifdef CONFIG_PPC32
if (test_perf_counter_pending()) {
clear_perf_counter_pending();
perf_counter_do_pending();
}
if (atomic_read(&ppc_n_lost_interrupts) != 0)
do_IRQ(regs);
#endif

12
arch/powerpc/platforms/Kconfig.cputype
View File

@ -1,7 +1,7 @@
config PPC64
bool "64-bit kernel"
default n
select HAVE_PERF_COUNTERS
select PPC_HAVE_PMU_SUPPORT
help
This option selects whether a 32-bit or a 64-bit kernel
will be built.
@ -78,6 +78,7 @@ config POWER4_ONLY
config 6xx
def_bool y
depends on PPC32 && PPC_BOOK3S
select PPC_HAVE_PMU_SUPPORT
config POWER3
bool
@ -246,6 +247,15 @@ config VIRT_CPU_ACCOUNTING
If in doubt, say Y here.
config PPC_HAVE_PMU_SUPPORT
bool
config PPC_PERF_CTRS
def_bool y
depends on PERF_COUNTERS && PPC_HAVE_PMU_SUPPORT
help
This enables the powerpc-specific perf_counter back-end.
config SMP
depends on PPC_STD_MMU || FSL_BOOKE
bool "Symmetric multi-processing support"

5
arch/x86/include/asm/perf_counter.h
View File

@ -84,11 +84,6 @@ union cpuid10_edx {
#define MSR_ARCH_PERFMON_FIXED_CTR2 0x30b
#define X86_PMC_IDX_FIXED_BUS_CYCLES (X86_PMC_IDX_FIXED + 2)
extern void set_perf_counter_pending(void);
#define clear_perf_counter_pending() do { } while (0)
#define test_perf_counter_pending() (0)
#ifdef CONFIG_PERF_COUNTERS
extern void init_hw_perf_counters(void);
extern void perf_counters_lapic_init(void);

8
arch/x86/include/asm/pgtable_32.h
View File

@ -49,13 +49,17 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t);
#endif
#if defined(CONFIG_HIGHPTE)
#define __KM_PTE \
(in_nmi() ? KM_NMI_PTE : \
in_irq() ? KM_IRQ_PTE : \
KM_PTE0)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE0) + \
((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), __KM_PTE) + \
pte_index((address)))
#define pte_offset_map_nested(dir, address) \
((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE1) + \
pte_index((address)))
#define pte_unmap(pte) kunmap_atomic((pte), KM_PTE0)
#define pte_unmap(pte) kunmap_atomic((pte), __KM_PTE)
#define pte_unmap_nested(pte) kunmap_atomic((pte), KM_PTE1)
#else
#define pte_offset_map(dir, address) \

7
arch/x86/include/asm/uaccess.h
View File

@ -25,7 +25,12 @@
#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
#define KERNEL_DS MAKE_MM_SEG(-1UL)
#define USER_DS MAKE_MM_SEG(PAGE_OFFSET)
#ifdef CONFIG_X86_32
# define USER_DS MAKE_MM_SEG(PAGE_OFFSET)
#else
# define USER_DS MAKE_MM_SEG(__VIRTUAL_MASK)
#endif
#define get_ds() (KERNEL_DS)
#define get_fs() (current_thread_info()->addr_limit)

142
arch/x86/kernel/cpu/perf_counter.c
View File

@ -19,6 +19,7 @@
#include <linux/kdebug.h>
#include <linux/sched.h>
#include <linux/uaccess.h>
#include <linux/highmem.h>
#include <asm/apic.h>
#include <asm/stacktrace.h>
@ -389,23 +390,23 @@ static u64 intel_pmu_raw_event(u64 event)
return event & CORE_EVNTSEL_MASK;
}
static const u64 amd_0f_hw_cache_event_ids
static const u64 amd_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x0040, /* Data Cache Accesses */
[ C(RESULT_MISS) ] = 0x0041, /* Data Cache Misses */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x0042, /* Data Cache Refills from L2 */
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x0267, /* Data Prefetcher :attempts */
[ C(RESULT_MISS) ] = 0x0167, /* Data Prefetcher :cancelled */
},
},
[ C(L1I ) ] = {
@ -418,17 +419,17 @@ static const u64 amd_0f_hw_cache_event_ids
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x014B, /* Prefetch Instructions :Load */
[ C(RESULT_MISS) ] = 0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x037D, /* Requests to L2 Cache :IC+DC */
[ C(RESULT_MISS) ] = 0x037E, /* L2 Cache Misses : IC+DC */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x017F, /* L2 Fill/Writeback */
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
@ -438,8 +439,8 @@ static const u64 amd_0f_hw_cache_event_ids
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
[ C(RESULT_ACCESS) ] = 0x0040, /* Data Cache Accesses */
[ C(RESULT_MISS) ] = 0x0046, /* L1 DTLB and L2 DLTB Miss */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0,
@ -1223,6 +1224,8 @@ again:
if (!intel_pmu_save_and_restart(counter))
continue;
data.period = counter->hw.last_period;
if (perf_counter_overflow(counter, 1, &data))
intel_pmu_disable_counter(&counter->hw, bit);
}
@ -1459,18 +1462,16 @@ static int intel_pmu_init(void)
static int amd_pmu_init(void)
{
/* Performance-monitoring supported from K7 and later: */
if (boot_cpu_data.x86 < 6)
return -ENODEV;
x86_pmu = amd_pmu;
switch (boot_cpu_data.x86) {
case 0x0f:
case 0x10:
case 0x11:
memcpy(hw_cache_event_ids, amd_0f_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
/* Events are common for all AMDs */
memcpy(hw_cache_event_ids, amd_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
pr_cont("AMD Family 0f/10/11 events, ");
break;
}
return 0;
}
@ -1554,9 +1555,9 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter)
*/
static inline
void callchain_store(struct perf_callchain_entry *entry, unsigned long ip)
void callchain_store(struct perf_callchain_entry *entry, u64 ip)
{
if (entry->nr < MAX_STACK_DEPTH)
if (entry->nr < PERF_MAX_STACK_DEPTH)
entry->ip[entry->nr++] = ip;
}
@ -1577,8 +1578,8 @@ static void backtrace_warning(void *data, char *msg)
static int backtrace_stack(void *data, char *name)
{
/* Don't bother with IRQ stacks for now */
return -1;
/* Process all stacks: */
return 0;
}
static void backtrace_address(void *data, unsigned long addr, int reliable)
@ -1596,47 +1597,59 @@ static const struct stacktrace_ops backtrace_ops = {
.address = backtrace_address,
};
#include "../dumpstack.h"
static void
perf_callchain_kernel(struct pt_regs *regs, struct perf_callchain_entry *entry)
{
unsigned long bp;
char *stack;
int nr = entry->nr;
callchain_store(entry, PERF_CONTEXT_KERNEL);
callchain_store(entry, regs->ip);
callchain_store(entry, instruction_pointer(regs));
stack = ((char *)regs + sizeof(struct pt_regs));
#ifdef CONFIG_FRAME_POINTER
bp = frame_pointer(regs);
#else
bp = 0;
#endif
dump_trace(NULL, regs, (void *)stack, bp, &backtrace_ops, entry);
entry->kernel = entry->nr - nr;
dump_trace(NULL, regs, NULL, 0, &backtrace_ops, entry);
}
/*
* best effort, GUP based copy_from_user() that assumes IRQ or NMI context
*/
static unsigned long
copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
{
unsigned long offset, addr = (unsigned long)from;
int type = in_nmi() ? KM_NMI : KM_IRQ0;
unsigned long size, len = 0;
struct page *page;
void *map;
int ret;
struct stack_frame {
const void __user *next_fp;
unsigned long return_address;
};
do {
ret = __get_user_pages_fast(addr, 1, 0, &page);
if (!ret)
break;
offset = addr & (PAGE_SIZE - 1);
size = min(PAGE_SIZE - offset, n - len);
map = kmap_atomic(page, type);
memcpy(to, map+offset, size);
kunmap_atomic(map, type);
put_page(page);
len += size;
to += size;
addr += size;
} while (len < n);
return len;
}
static int copy_stack_frame(const void __user *fp, struct stack_frame *frame)
{
int ret;
unsigned long bytes;
if (!access_ok(VERIFY_READ, fp, sizeof(*frame)))
return 0;
bytes = copy_from_user_nmi(frame, fp, sizeof(*frame));
ret = 1;
pagefault_disable();
if (__copy_from_user_inatomic(frame, fp, sizeof(*frame)))
ret = 0;
pagefault_enable();
return ret;
return bytes == sizeof(*frame);
}
static void
@ -1644,28 +1657,28 @@ perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry)
{
struct stack_frame frame;
const void __user *fp;
int nr = entry->nr;
regs = (struct pt_regs *)current->thread.sp0 - 1;
fp = (void __user *)regs->bp;
if (!user_mode(regs))
regs = task_pt_regs(current);
fp = (void __user *)regs->bp;
callchain_store(entry, PERF_CONTEXT_USER);
callchain_store(entry, regs->ip);
while (entry->nr < MAX_STACK_DEPTH) {
frame.next_fp = NULL;
while (entry->nr < PERF_MAX_STACK_DEPTH) {
frame.next_frame = NULL;
frame.return_address = 0;
if (!copy_stack_frame(fp, &frame))
break;
if ((unsigned long)fp < user_stack_pointer(regs))
if ((unsigned long)fp < regs->sp)
break;
callchain_store(entry, frame.return_address);
fp = frame.next_fp;
fp = frame.next_frame;
}
entry->user = entry->nr - nr;
}
static void
@ -1701,9 +1714,6 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
entry = &__get_cpu_var(irq_entry);
entry->nr = 0;
entry->hv = 0;
entry->kernel = 0;
entry->user = 0;
perf_do_callchain(regs, entry);

58
arch/x86/mm/gup.c
View File

@ -14,7 +14,7 @@
static inline pte_t gup_get_pte(pte_t *ptep)
{
#ifndef CONFIG_X86_PAE
return *ptep;
return ACCESS_ONCE(*ptep);
#else
/*
* With get_user_pages_fast, we walk down the pagetables without taking
@ -219,6 +219,62 @@ static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end,
return 1;
}
/*
* Like get_user_pages_fast() except its IRQ-safe in that it won't fall
* back to the regular GUP.
*/
int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages)
{
struct mm_struct *mm = current->mm;
unsigned long addr, len, end;
unsigned long next;
unsigned long flags;
pgd_t *pgdp;
int nr = 0;
start &= PAGE_MASK;
addr = start;
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;
if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
(void __user *)start, len)))
return 0;
/*
* XXX: batch / limit 'nr', to avoid large irq off latency
* needs some instrumenting to determine the common sizes used by
* important workloads (eg. DB2), and whether limiting the batch size
* will decrease performance.
*
* It seems like we're in the clear for the moment. Direct-IO is
* the main guy that batches up lots of get_user_pages, and even
* they are limited to 64-at-a-time which is not so many.
*/
/*
* This doesn't prevent pagetable teardown, but does prevent
* the pagetables and pages from being freed on x86.
*
* So long as we atomically load page table pointers versus teardown
* (which we do on x86, with the above PAE exception), we can follow the
* address down to the the page and take a ref on it.
*/
local_irq_save(flags);
pgdp = pgd_offset(mm, addr);
do {
pgd_t pgd = *pgdp;
next = pgd_addr_end(addr, end);
if (pgd_none(pgd))
break;
if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
break;
} while (pgdp++, addr = next, addr != end);
local_irq_restore(flags);
return nr;
}
/**
* get_user_pages_fast() - pin user pages in memory
* @start: starting user address

15
fs/anon_inodes.c
View File

@ -52,6 +52,19 @@ static const struct dentry_operations anon_inodefs_dentry_operations = {
.d_delete = anon_inodefs_delete_dentry,
};
/*
* nop .set_page_dirty method so that people can use .page_mkwrite on
* anon inodes.
*/
static int anon_set_page_dirty(struct page *page)
{
return 0;
};
static const struct address_space_operations anon_aops = {
.set_page_dirty = anon_set_page_dirty,
};
/**
* anon_inode_getfd - creates a new file instance by hooking it up to an
* anonymous inode, and a dentry that describe the "class"
@ -151,6 +164,8 @@ static struct inode *anon_inode_mkinode(void)
inode->i_fop = &anon_inode_fops;
inode->i_mapping->a_ops = &anon_aops;
/*
* Mark the inode dirty from the very beginning,
* that way it will never be moved to the dirty

5
include/asm-generic/kmap_types.h
View File

@ -24,7 +24,10 @@ D(12) KM_SOFTIRQ1,
D(13) KM_SYNC_ICACHE,
D(14) KM_SYNC_DCACHE,
D(15) KM_UML_USERCOPY, /* UML specific, for copy_*_user - used in do_op_one_page */
D(16) KM_TYPE_NR
D(16) KM_IRQ_PTE,
D(17) KM_NMI,
D(18) KM_NMI_PTE,
D(19) KM_TYPE_NR
};
#undef D

6
include/linux/mm.h
View File

@ -853,6 +853,12 @@ extern int mprotect_fixup(struct vm_area_struct *vma,
struct vm_area_struct **pprev, unsigned long start,
unsigned long end, unsigned long newflags);
/*
* doesn't attempt to fault and will return short.
*/
int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages);
/*
* A callback you can register to apply pressure to ageable caches.
*

79
include/linux/perf_counter.h
View File

@ -236,10 +236,16 @@ struct perf_counter_mmap_page {
/*
* Control data for the mmap() data buffer.
*
* User-space reading this value should issue an rmb(), on SMP capable
* platforms, after reading this value -- see perf_counter_wakeup().
* User-space reading the @data_head value should issue an rmb(), on
* SMP capable platforms, after reading this value -- see
* perf_counter_wakeup().
*
* When the mapping is PROT_WRITE the @data_tail value should be
* written by userspace to reflect the last read data. In this case
* the kernel will not over-write unread data.
*/
__u64 data_head; /* head in the data section */
__u64 data_tail; /* user-space written tail */
};
#define PERF_EVENT_MISC_CPUMODE_MASK (3 << 0)
@ -273,6 +279,15 @@ enum perf_event_type {
*/
PERF_EVENT_MMAP = 1,
/*
* struct {
* struct perf_event_header header;
* u64 id;
* u64 lost;
* };
*/
PERF_EVENT_LOST = 2,
/*
* struct {
* struct perf_event_header header;
@ -313,30 +328,39 @@ enum perf_event_type {
/*
* When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field
* will be PERF_RECORD_*
* will be PERF_SAMPLE_*
*
* struct {
* struct perf_event_header header;
*
* { u64 ip; } && PERF_RECORD_IP
* { u32 pid, tid; } && PERF_RECORD_TID
* { u64 time; } && PERF_RECORD_TIME
* { u64 addr; } && PERF_RECORD_ADDR
* { u64 config; } && PERF_RECORD_CONFIG
* { u32 cpu, res; } && PERF_RECORD_CPU
* { u64 ip; } && PERF_SAMPLE_IP
* { u32 pid, tid; } && PERF_SAMPLE_TID
* { u64 time; } && PERF_SAMPLE_TIME
* { u64 addr; } && PERF_SAMPLE_ADDR
* { u64 config; } && PERF_SAMPLE_CONFIG
* { u32 cpu, res; } && PERF_SAMPLE_CPU
*
* { u64 nr;
* { u64 id, val; } cnt[nr]; } && PERF_RECORD_GROUP
* { u64 id, val; } cnt[nr]; } && PERF_SAMPLE_GROUP
*
* { u16 nr,
* hv,
* kernel,
* user;
* u64 ips[nr]; } && PERF_RECORD_CALLCHAIN
* { u64 nr,
* u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN
* };
*/
};
enum perf_callchain_context {
PERF_CONTEXT_HV = (__u64)-32,
PERF_CONTEXT_KERNEL = (__u64)-128,
PERF_CONTEXT_USER = (__u64)-512,
PERF_CONTEXT_GUEST = (__u64)-2048,
PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176,
PERF_CONTEXT_GUEST_USER = (__u64)-2560,
PERF_CONTEXT_MAX = (__u64)-4095,
};
#ifdef __KERNEL__
/*
* Kernel-internal data types and definitions:
@ -356,6 +380,13 @@ enum perf_event_type {
#include <linux/pid_namespace.h>
#include <asm/atomic.h>
#define PERF_MAX_STACK_DEPTH 255
struct perf_callchain_entry {
__u64 nr;
__u64 ip[PERF_MAX_STACK_DEPTH];
};
struct task_struct;
/**
@ -414,6 +445,7 @@ struct file;
struct perf_mmap_data {
struct rcu_head rcu_head;
int nr_pages; /* nr of data pages */
int writable; /* are we writable */
int nr_locked; /* nr pages mlocked */
atomic_t poll; /* POLL_ for wakeups */
@ -423,8 +455,8 @@ struct perf_mmap_data {
atomic_long_t done_head; /* completed head */
atomic_t lock; /* concurrent writes */
atomic_t wakeup; /* needs a wakeup */
atomic_t lost; /* nr records lost */
struct perf_counter_mmap_page *user_page;
void *data_pages[0];
@ -604,6 +636,7 @@ extern void perf_counter_task_tick(struct task_struct *task, int cpu);
extern int perf_counter_init_task(struct task_struct *child);
extern void perf_counter_exit_task(struct task_struct *child);
extern void perf_counter_free_task(struct task_struct *task);
extern void set_perf_counter_pending(void);
extern void perf_counter_do_pending(void);
extern void perf_counter_print_debug(void);
extern void __perf_disable(void);
@ -649,18 +682,6 @@ static inline void perf_counter_mmap(struct vm_area_struct *vma)
extern void perf_counter_comm(struct task_struct *tsk);
extern void perf_counter_fork(struct task_struct *tsk);
extern void perf_counter_task_migration(struct task_struct *task, int cpu);
#define MAX_STACK_DEPTH 255
struct perf_callchain_entry {
u16 nr;
u16 hv;
u16 kernel;
u16 user;
u64 ip[MAX_STACK_DEPTH];
};
extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
extern int sysctl_perf_counter_paranoid;
@ -701,8 +722,6 @@ static inline void perf_counter_mmap(struct vm_area_struct *vma) { }
static inline void perf_counter_comm(struct task_struct *tsk) { }
static inline void perf_counter_fork(struct task_struct *tsk) { }
static inline void perf_counter_init(void) { }
static inline void perf_counter_task_migration(struct task_struct *task,
int cpu) { }
#endif
#endif /* __KERNEL__ */

320
kernel/perf_counter.c
View File

@ -124,7 +124,7 @@ void perf_enable(void)
static void get_ctx(struct perf_counter_context *ctx)
{
atomic_inc(&ctx->refcount);
WARN_ON(!atomic_inc_not_zero(&ctx->refcount));
}
static void free_ctx(struct rcu_head *head)
@ -175,6 +175,11 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags)
spin_unlock_irqrestore(&ctx->lock, *flags);
goto retry;
}
if (!atomic_inc_not_zero(&ctx->refcount)) {
spin_unlock_irqrestore(&ctx->lock, *flags);
ctx = NULL;
}
}
rcu_read_unlock();
return ctx;
@ -193,7 +198,6 @@ static struct perf_counter_context *perf_pin_task_context(struct task_struct *ta
ctx = perf_lock_task_context(task, &flags);
if (ctx) {
++ctx->pin_count;
get_ctx(ctx);
spin_unlock_irqrestore(&ctx->lock, flags);
}
return ctx;
@ -1283,7 +1287,7 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
if (!interrupts) {
perf_disable();
counter->pmu->disable(counter);
atomic_set(&hwc->period_left, 0);
atomic64_set(&hwc->period_left, 0);
counter->pmu->enable(counter);
perf_enable();
}
@ -1459,11 +1463,6 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
put_ctx(parent_ctx);
ctx->parent_ctx = NULL; /* no longer a clone */
}
/*
* Get an extra reference before dropping the lock so that
* this context won't get freed if the task exits.
*/
get_ctx(ctx);
spin_unlock_irqrestore(&ctx->lock, flags);
}
@ -1553,7 +1552,7 @@ static int perf_release(struct inode *inode, struct file *file)
static ssize_t
perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count)
{
u64 values[3];
u64 values[4];
int n;
/*
@ -1620,22 +1619,6 @@ static void perf_counter_reset(struct perf_counter *counter)
perf_counter_update_userpage(counter);
}
static void perf_counter_for_each_sibling(struct perf_counter *counter,
void (*func)(struct perf_counter *))
{
struct perf_counter_context *ctx = counter->ctx;
struct perf_counter *sibling;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
counter = counter->group_leader;
func(counter);
list_for_each_entry(sibling, &counter->sibling_list, list_entry)
func(sibling);
mutex_unlock(&ctx->mutex);
}
/*
* Holding the top-level counter's child_mutex means that any
* descendant process that has inherited this counter will block
@ -1658,14 +1641,18 @@ static void perf_counter_for_each_child(struct perf_counter *counter,
static void perf_counter_for_each(struct perf_counter *counter,
void (*func)(struct perf_counter *))
{
struct perf_counter *child;
struct perf_counter_context *ctx = counter->ctx;
struct perf_counter *sibling;
WARN_ON_ONCE(counter->ctx->parent_ctx);
mutex_lock(&counter->child_mutex);
perf_counter_for_each_sibling(counter, func);
list_for_each_entry(child, &counter->child_list, child_list)
perf_counter_for_each_sibling(child, func);
mutex_unlock(&counter->child_mutex);
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
counter = counter->group_leader;
perf_counter_for_each_child(counter, func);
func(counter);
list_for_each_entry(sibling, &counter->sibling_list, list_entry)
perf_counter_for_each_child(counter, func);
mutex_unlock(&ctx->mutex);
}
static int perf_counter_period(struct perf_counter *counter, u64 __user *arg)
@ -1806,6 +1793,12 @@ static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
struct perf_mmap_data *data;
int ret = VM_FAULT_SIGBUS;
if (vmf->flags & FAULT_FLAG_MKWRITE) {
if (vmf->pgoff == 0)
ret = 0;
return ret;
}
rcu_read_lock();
data = rcu_dereference(counter->data);
if (!data)
@ -1819,9 +1812,16 @@ static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
if ((unsigned)nr > data->nr_pages)
goto unlock;
if (vmf->flags & FAULT_FLAG_WRITE)
goto unlock;
vmf->page = virt_to_page(data->data_pages[nr]);
}
get_page(vmf->page);
vmf->page->mapping = vma->vm_file->f_mapping;
vmf->page->index = vmf->pgoff;
ret = 0;
unlock:
rcu_read_unlock();
@ -1874,6 +1874,14 @@ fail:
return -ENOMEM;
}
static void perf_mmap_free_page(unsigned long addr)
{
struct page *page = virt_to_page(addr);
page->mapping = NULL;
__free_page(page);
}
static void __perf_mmap_data_free(struct rcu_head *rcu_head)
{
struct perf_mmap_data *data;
@ -1881,9 +1889,10 @@ static void __perf_mmap_data_free(struct rcu_head *rcu_head)
data = container_of(rcu_head, struct perf_mmap_data, rcu_head);
free_page((unsigned long)data->user_page);
perf_mmap_free_page((unsigned long)data->user_page);
for (i = 0; i < data->nr_pages; i++)
free_page((unsigned long)data->data_pages[i]);
perf_mmap_free_page((unsigned long)data->data_pages[i]);
kfree(data);
}
@ -1920,9 +1929,10 @@ static void perf_mmap_close(struct vm_area_struct *vma)
}
static struct vm_operations_struct perf_mmap_vmops = {
.open = perf_mmap_open,
.close = perf_mmap_close,
.fault = perf_mmap_fault,
.open = perf_mmap_open,
.close = perf_mmap_close,
.fault = perf_mmap_fault,
.page_mkwrite = perf_mmap_fault,
};
static int perf_mmap(struct file *file, struct vm_area_struct *vma)
@ -1936,7 +1946,7 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
long user_extra, extra;
int ret = 0;
if (!(vma->vm_flags & VM_SHARED) || (vma->vm_flags & VM_WRITE))
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vma_size = vma->vm_end - vma->vm_start;
@ -1995,10 +2005,12 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
atomic_long_add(user_extra, &user->locked_vm);
vma->vm_mm->locked_vm += extra;
counter->data->nr_locked = extra;
if (vma->vm_flags & VM_WRITE)
counter->data->writable = 1;
unlock:
mutex_unlock(&counter->mmap_mutex);
vma->vm_flags &= ~VM_MAYWRITE;
vma->vm_flags |= VM_RESERVED;
vma->vm_ops = &perf_mmap_vmops;
@ -2175,11 +2187,38 @@ struct perf_output_handle {
unsigned long head;
unsigned long offset;
int nmi;
int overflow;
int sample;
int locked;
unsigned long flags;
};
static bool perf_output_space(struct perf_mmap_data *data,
unsigned int offset, unsigned int head)
{
unsigned long tail;
unsigned long mask;
if (!data->writable)
return true;
mask = (data->nr_pages << PAGE_SHIFT) - 1;
/*
* Userspace could choose to issue a mb() before updating the tail
* pointer. So that all reads will be completed before the write is
* issued.
*/
tail = ACCESS_ONCE(data->user_page->data_tail);
smp_rmb();
offset = (offset - tail) & mask;
head = (head - tail) & mask;
if ((int)(head - offset) < 0)
return false;
return true;
}
static void perf_output_wakeup(struct perf_output_handle *handle)
{
atomic_set(&handle->data->poll, POLL_IN);
@ -2270,55 +2309,6 @@ out:
local_irq_restore(handle->flags);
}
static int perf_output_begin(struct perf_output_handle *handle,
struct perf_counter *counter, unsigned int size,
int nmi, int overflow)
{
struct perf_mmap_data *data;
unsigned int offset, head;
/*
* For inherited counters we send all the output towards the parent.
*/
if (counter->parent)
counter = counter->parent;
rcu_read_lock();
data = rcu_dereference(counter->data);
if (!data)
goto out;
handle->data = data;
handle->counter = counter;
handle->nmi = nmi;
handle->overflow = overflow;
if (!data->nr_pages)
goto fail;
perf_output_lock(handle);
do {
offset = head = atomic_long_read(&data->head);
head += size;
} while (atomic_long_cmpxchg(&data->head, offset, head) != offset);
handle->offset = offset;
handle->head = head;
if ((offset >> PAGE_SHIFT) != (head >> PAGE_SHIFT))
atomic_set(&data->wakeup, 1);
return 0;
fail:
perf_output_wakeup(handle);
out:
rcu_read_unlock();
return -ENOSPC;
}
static void perf_output_copy(struct perf_output_handle *handle,
const void *buf, unsigned int len)
{
@ -2358,6 +2348,78 @@ static void perf_output_copy(struct perf_output_handle *handle,
#define perf_output_put(handle, x) \
perf_output_copy((handle), &(x), sizeof(x))
static int perf_output_begin(struct perf_output_handle *handle,
struct perf_counter *counter, unsigned int size,
int nmi, int sample)
{
struct perf_mmap_data *data;
unsigned int offset, head;
int have_lost;
struct {
struct perf_event_header header;
u64 id;
u64 lost;
} lost_event;
/*
* For inherited counters we send all the output towards the parent.
*/
if (counter->parent)
counter = counter->parent;
rcu_read_lock();
data = rcu_dereference(counter->data);
if (!data)
goto out;
handle->data = data;
handle->counter = counter;
handle->nmi = nmi;
handle->sample = sample;
if (!data->nr_pages)
goto fail;
have_lost = atomic_read(&data->lost);
if (have_lost)
size += sizeof(lost_event);
perf_output_lock(handle);
do {
offset = head = atomic_long_read(&data->head);
head += size;
if (unlikely(!perf_output_space(data, offset, head)))
goto fail;
} while (atomic_long_cmpxchg(&data->head, offset, head) != offset);
handle->offset = offset;
handle->head = head;
if ((offset >> PAGE_SHIFT) != (head >> PAGE_SHIFT))
atomic_set(&data->wakeup, 1);
if (have_lost) {
lost_event.header.type = PERF_EVENT_LOST;
lost_event.header.misc = 0;
lost_event.header.size = sizeof(lost_event);
lost_event.id = counter->id;
lost_event.lost = atomic_xchg(&data->lost, 0);
perf_output_put(handle, lost_event);
}
return 0;
fail:
atomic_inc(&data->lost);
perf_output_unlock(handle);
out:
rcu_read_unlock();
return -ENOSPC;
}
static void perf_output_end(struct perf_output_handle *handle)
{
struct perf_counter *counter = handle->counter;
@ -2365,7 +2427,7 @@ static void perf_output_end(struct perf_output_handle *handle)
int wakeup_events = counter->attr.wakeup_events;
if (handle->overflow && wakeup_events) {
if (handle->sample && wakeup_events) {
int events = atomic_inc_return(&data->events);
if (events >= wakeup_events) {
atomic_sub(wakeup_events, &data->events);
@ -2970,7 +3032,7 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
}
/*
* Generic counter overflow handling.
* Generic counter overflow handling, sampling.
*/
int perf_counter_overflow(struct perf_counter *counter, int nmi,
@ -3109,20 +3171,15 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
}
static void perf_swcounter_overflow(struct perf_counter *counter,
int nmi, struct pt_regs *regs, u64 addr)
int nmi, struct perf_sample_data *data)
{
struct perf_sample_data data = {
.regs = regs,
.addr = addr,
.period = counter->hw.last_period,
};
data->period = counter->hw.last_period;
perf_swcounter_update(counter);
perf_swcounter_set_period(counter);
if (perf_counter_overflow(counter, nmi, &data))
if (perf_counter_overflow(counter, nmi, data))
/* soft-disable the counter */
;
}
static int perf_swcounter_is_counting(struct perf_counter *counter)
@ -3187,18 +3244,18 @@ static int perf_swcounter_match(struct perf_counter *counter,
}
static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
int nmi, struct pt_regs *regs, u64 addr)
int nmi, struct perf_sample_data *data)
{
int neg = atomic64_add_negative(nr, &counter->hw.count);
if (counter->hw.sample_period && !neg && regs)
perf_swcounter_overflow(counter, nmi, regs, addr);
if (counter->hw.sample_period && !neg && data->regs)
perf_swcounter_overflow(counter, nmi, data);
}
static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
enum perf_type_id type, u32 event,
u64 nr, int nmi, struct pt_regs *regs,
u64 addr)
enum perf_type_id type,
u32 event, u64 nr, int nmi,
struct perf_sample_data *data)
{
struct perf_counter *counter;
@ -3207,8 +3264,8 @@ static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
rcu_read_lock();
list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
if (perf_swcounter_match(counter, type, event, regs))
perf_swcounter_add(counter, nr, nmi, regs, addr);
if (perf_swcounter_match(counter, type, event, data->regs))
perf_swcounter_add(counter, nr, nmi, data);
}
rcu_read_unlock();
}
@ -3227,9 +3284,9 @@ static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx)
return &cpuctx->recursion[0];
}
static void __perf_swcounter_event(enum perf_type_id type, u32 event,
u64 nr, int nmi, struct pt_regs *regs,
u64 addr)
static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
u64 nr, int nmi,
struct perf_sample_data *data)
{
struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
int *recursion = perf_swcounter_recursion_context(cpuctx);
@ -3242,7 +3299,7 @@ static void __perf_swcounter_event(enum perf_type_id type, u32 event,
barrier();
perf_swcounter_ctx_event(&cpuctx->ctx, type, event,
nr, nmi, regs, addr);
nr, nmi, data);
rcu_read_lock();
/*
* doesn't really matter which of the child contexts the
@ -3250,7 +3307,7 @@ static void __perf_swcounter_event(enum perf_type_id type, u32 event,
*/
ctx = rcu_dereference(current->perf_counter_ctxp);
if (ctx)
perf_swcounter_ctx_event(ctx, type, event, nr, nmi, regs, addr);
perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data);
rcu_read_unlock();
barrier();
@ -3263,7 +3320,12 @@ out:
void
perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
{
__perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi, regs, addr);
struct perf_sample_data data = {
.regs = regs,
.addr = addr,
};
do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi, &data);
}
static void perf_swcounter_read(struct perf_counter *counter)
@ -3404,36 +3466,18 @@ static const struct pmu perf_ops_task_clock = {
.read = task_clock_perf_counter_read,
};
/*
* Software counter: cpu migrations
*/
void perf_counter_task_migration(struct task_struct *task, int cpu)
{
struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
struct perf_counter_context *ctx;
perf_swcounter_ctx_event(&cpuctx->ctx, PERF_TYPE_SOFTWARE,
PERF_COUNT_SW_CPU_MIGRATIONS,
1, 1, NULL, 0);
ctx = perf_pin_task_context(task);
if (ctx) {
perf_swcounter_ctx_event(ctx, PERF_TYPE_SOFTWARE,
PERF_COUNT_SW_CPU_MIGRATIONS,
1, 1, NULL, 0);
perf_unpin_context(ctx);
}
}
#ifdef CONFIG_EVENT_PROFILE
void perf_tpcounter_event(int event_id)
{
struct pt_regs *regs = get_irq_regs();
struct perf_sample_data data = {
.regs = get_irq_regs();
.addr = 0,
};
if (!regs)
regs = task_pt_regs(current);
if (!data.regs)
data.regs = task_pt_regs(current);
__perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, 1, 1, regs, 0);
do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, 1, 1, &data);
}
EXPORT_SYMBOL_GPL(perf_tpcounter_event);

3
kernel/sched.c
View File

@ -1978,7 +1978,8 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
if (task_hot(p, old_rq->clock, NULL))
schedstat_inc(p, se.nr_forced2_migrations);
#endif
perf_counter_task_migration(p, new_cpu);
perf_swcounter_event(PERF_COUNT_SW_CPU_MIGRATIONS,
1, 1, NULL, 0);
}
p->se.vruntime -= old_cfsrq->min_vruntime -
new_cfsrq->min_vruntime;

10
tools/perf/Makefile
View File

@ -157,10 +157,15 @@ uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
# If we're on a 64-bit kernel, use -m64
ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
M64 := -m64
endif
# CFLAGS and LDFLAGS are for the users to override from the command line.
CFLAGS = -ggdb3 -Wall -Werror -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -O6
LDFLAGS = -lpthread -lrt -lelf
CFLAGS = $(M64) -ggdb3 -Wall -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -Werror -O6
LDFLAGS = -lpthread -lrt -lelf -lm
ALL_CFLAGS = $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS)
STRIP ?= strip
@ -285,6 +290,7 @@ LIB_FILE=libperf.a
LIB_H += ../../include/linux/perf_counter.h
LIB_H += perf.h
LIB_H += types.h
LIB_H += util/list.h
LIB_H += util/rbtree.h
LIB_H += util/levenshtein.h

262
tools/perf/builtin-annotate.c
View File

@ -25,6 +25,10 @@
#define SHOW_USER 2
#define SHOW_HV 4
#define MIN_GREEN 0.5
#define MIN_RED 5.0
static char const *input_name = "perf.data";
static char *vmlinux = "vmlinux";
@ -39,40 +43,42 @@ static int dump_trace = 0;
static int verbose;
static int print_line;
static unsigned long page_size;
static unsigned long mmap_window = 32;
struct ip_event {
struct perf_event_header header;
__u64 ip;
__u32 pid, tid;
u64 ip;
u32 pid, tid;
};
struct mmap_event {
struct perf_event_header header;
__u32 pid, tid;
__u64 start;
__u64 len;
__u64 pgoff;
u32 pid, tid;
u64 start;
u64 len;
u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
__u32 pid, tid;
u32 pid, tid;
char comm[16];
};
struct fork_event {
struct perf_event_header header;
__u32 pid, ppid;
u32 pid, ppid;
};
struct period_event {
struct perf_event_header header;
__u64 time;
__u64 id;
__u64 sample_period;
u64 time;
u64 id;
u64 sample_period;
};
typedef union event_union {
@ -84,6 +90,13 @@ typedef union event_union {
struct period_event period;
} event_t;
struct sym_ext {
struct rb_node node;
double percent;
char *path;
};
static LIST_HEAD(dsos);
static struct dso *kernel_dso;
static struct dso *vdso;
@ -145,7 +158,7 @@ static void dsos__fprintf(FILE *fp)
dso__fprintf(pos, fp);
}
static struct symbol *vdso__find_symbol(struct dso *dso, __u64 ip)
static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
{
return dso__find_symbol(kernel_dso, ip);
}
@ -178,19 +191,19 @@ static int load_kernel(void)
struct map {
struct list_head node;
__u64 start;
__u64 end;
__u64 pgoff;
__u64 (*map_ip)(struct map *, __u64);
u64 start;
u64 end;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
static __u64 map__map_ip(struct map *map, __u64 ip)
static u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
static __u64 vdso__map_ip(struct map *map, __u64 ip)
static u64 vdso__map_ip(struct map *map, u64 ip)
{
return ip;
}
@ -373,7 +386,7 @@ static int thread__fork(struct thread *self, struct thread *parent)
return 0;
}
static struct map *thread__find_map(struct thread *self, __u64 ip)
static struct map *thread__find_map(struct thread *self, u64 ip)
{
struct map *pos;
@ -414,7 +427,7 @@ struct hist_entry {
struct map *map;
struct dso *dso;
struct symbol *sym;
__u64 ip;
u64 ip;
char level;
uint32_t count;
@ -519,7 +532,7 @@ sort__dso_print(FILE *fp, struct hist_entry *self)
if (self->dso)
return fprintf(fp, "%-25s", self->dso->name);
return fprintf(fp, "%016llx ", (__u64)self->ip);
return fprintf(fp, "%016llx ", (u64)self->ip);
}
static struct sort_entry sort_dso = {
@ -533,7 +546,7 @@ static struct sort_entry sort_dso = {
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
__u64 ip_l, ip_r;
u64 ip_l, ip_r;
if (left->sym == right->sym)
return 0;
@ -550,13 +563,13 @@ sort__sym_print(FILE *fp, struct hist_entry *self)
size_t ret = 0;
if (verbose)
ret += fprintf(fp, "%#018llx ", (__u64)self->ip);
ret += fprintf(fp, "%#018llx ", (u64)self->ip);
if (self->sym) {
ret += fprintf(fp, "[%c] %s",
self->dso == kernel_dso ? 'k' : '.', self->sym->name);
} else {
ret += fprintf(fp, "%#016llx", (__u64)self->ip);
ret += fprintf(fp, "%#016llx", (u64)self->ip);
}
return ret;
@ -647,7 +660,7 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
/*
* collect histogram counts
*/
static void hist_hit(struct hist_entry *he, __u64 ip)
static void hist_hit(struct hist_entry *he, u64 ip)
{
unsigned int sym_size, offset;
struct symbol *sym = he->sym;
@ -676,7 +689,7 @@ static void hist_hit(struct hist_entry *he, __u64 ip)
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
struct symbol *sym, __u64 ip, char level)
struct symbol *sym, u64 ip, char level)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
@ -848,7 +861,7 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
int show = 0;
struct dso *dso = NULL;
struct thread *thread = threads__findnew(event->ip.pid);
__u64 ip = event->ip.ip;
u64 ip = event->ip.ip;
struct map *map = NULL;
dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p\n",
@ -1030,13 +1043,33 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
static char *get_color(double percent)
{
char *color = PERF_COLOR_NORMAL;
/*
* We color high-overhead entries in red, mid-overhead
* entries in green - and keep the low overhead places
* normal:
*/
if (percent >= MIN_RED)
color = PERF_COLOR_RED;
else {
if (percent > MIN_GREEN)
color = PERF_COLOR_GREEN;
}
return color;
}
static int
parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len)
parse_line(FILE *file, struct symbol *sym, u64 start, u64 len)
{
char *line = NULL, *tmp, *tmp2;
static const char *prev_line;
static const char *prev_color;
unsigned int offset;
size_t line_len;
__u64 line_ip;
u64 line_ip;
int ret;
char *c;
@ -1073,27 +1106,36 @@ parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len)
}
if (line_ip != -1) {
const char *path = NULL;
unsigned int hits = 0;
double percent = 0.0;
char *color = PERF_COLOR_NORMAL;
char *color;
struct sym_ext *sym_ext = sym->priv;
offset = line_ip - start;
if (offset < len)
hits = sym->hist[offset];
if (sym->hist_sum)
if (offset < len && sym_ext) {
path = sym_ext[offset].path;
percent = sym_ext[offset].percent;
} else if (sym->hist_sum)
percent = 100.0 * hits / sym->hist_sum;
color = get_color(percent);
/*
* We color high-overhead entries in red, mid-overhead
* entries in green - and keep the low overhead places
* normal:
* Also color the filename and line if needed, with
* the same color than the percentage. Don't print it
* twice for close colored ip with the same filename:line
*/
if (percent >= 5.0)
color = PERF_COLOR_RED;
else {
if (percent > 0.5)
color = PERF_COLOR_GREEN;
if (path) {
if (!prev_line || strcmp(prev_line, path)
|| color != prev_color) {
color_fprintf(stdout, color, " %s", path);
prev_line = path;
prev_color = color;
}
}
color_fprintf(stdout, color, " %7.2f", percent);
@ -1109,10 +1151,125 @@ parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len)
return 0;
}
static struct rb_root root_sym_ext;
static void insert_source_line(struct sym_ext *sym_ext)
{
struct sym_ext *iter;
struct rb_node **p = &root_sym_ext.rb_node;
struct rb_node *parent = NULL;
while (*p != NULL) {
parent = *p;
iter = rb_entry(parent, struct sym_ext, node);
if (sym_ext->percent > iter->percent)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
rb_link_node(&sym_ext->node, parent, p);
rb_insert_color(&sym_ext->node, &root_sym_ext);
}
static void free_source_line(struct symbol *sym, int len)
{
struct sym_ext *sym_ext = sym->priv;
int i;
if (!sym_ext)
return;
for (i = 0; i < len; i++)
free(sym_ext[i].path);
free(sym_ext);
sym->priv = NULL;
root_sym_ext = RB_ROOT;
}
/* Get the filename:line for the colored entries */
static void
get_source_line(struct symbol *sym, u64 start, int len, char *filename)
{
int i;
char cmd[PATH_MAX * 2];
struct sym_ext *sym_ext;
if (!sym->hist_sum)
return;
sym->priv = calloc(len, sizeof(struct sym_ext));
if (!sym->priv)
return;
sym_ext = sym->priv;
for (i = 0; i < len; i++) {
char *path = NULL;
size_t line_len;
u64 offset;
FILE *fp;
sym_ext[i].percent = 100.0 * sym->hist[i] / sym->hist_sum;
if (sym_ext[i].percent <= 0.5)
continue;
offset = start + i;
sprintf(cmd, "addr2line -e %s %016llx", filename, offset);
fp = popen(cmd, "r");
if (!fp)
continue;
if (getline(&path, &line_len, fp) < 0 || !line_len)
goto next;
sym_ext[i].path = malloc(sizeof(char) * line_len + 1);
if (!sym_ext[i].path)
goto next;
strcpy(sym_ext[i].path, path);
insert_source_line(&sym_ext[i]);
next:
pclose(fp);
}
}
static void print_summary(char *filename)
{
struct sym_ext *sym_ext;
struct rb_node *node;
printf("\nSorted summary for file %s\n", filename);
printf("----------------------------------------------\n\n");
if (RB_EMPTY_ROOT(&root_sym_ext)) {
printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
return;
}
node = rb_first(&root_sym_ext);
while (node) {
double percent;
char *color;
char *path;
sym_ext = rb_entry(node, struct sym_ext, node);
percent = sym_ext->percent;
color = get_color(percent);
path = sym_ext->path;
color_fprintf(stdout, color, " %7.2f %s", percent, path);
node = rb_next(node);
}
}
static void annotate_sym(struct dso *dso, struct symbol *sym)
{
char *filename = dso->name;
__u64 start, end, len;
u64 start, end, len;
char command[PATH_MAX*2];
FILE *file;
@ -1121,13 +1278,6 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
if (dso == kernel_dso)
filename = vmlinux;
printf("\n------------------------------------------------\n");
printf(" Percent | Source code & Disassembly of %s\n", filename);
printf("------------------------------------------------\n");
if (verbose >= 2)
printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name);
start = sym->obj_start;
if (!start)
start = sym->start;
@ -1135,7 +1285,19 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
end = start + sym->end - sym->start + 1;
len = sym->end - sym->start;
sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (__u64)start, (__u64)end, filename);
if (print_line) {
get_source_line(sym, start, len, filename);
print_summary(filename);
}
printf("\n\n------------------------------------------------\n");
printf(" Percent | Source code & Disassembly of %s\n", filename);
printf("------------------------------------------------\n");
if (verbose >= 2)
printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name);
sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (u64)start, (u64)end, filename);
if (verbose >= 3)
printf("doing: %s\n", command);
@ -1150,6 +1312,8 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
}
pclose(file);
if (print_line)
free_source_line(sym, len);
}
static void find_annotations(void)
@ -1308,6 +1472,8 @@ static const struct option options[] = {
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_BOOLEAN('l', "print-line", &print_line,
"print matching source lines (may be slow)"),
OPT_END()
};

163
tools/perf/builtin-record.c
View File

@ -37,33 +37,37 @@ static pid_t target_pid = -1;
static int inherit = 1;
static int force = 0;
static int append_file = 0;
static int call_graph = 0;
static int verbose = 0;
static long samples;
static struct timeval last_read;
static struct timeval this_read;
static __u64 bytes_written;
static u64 bytes_written;
static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS];
static int nr_poll;
static int nr_cpu;
static int file_new = 1;
static struct perf_file_header file_header;
struct mmap_event {
struct perf_event_header header;
__u32 pid;
__u32 tid;
__u64 start;
__u64 len;
__u64 pgoff;
u32 pid;
u32 tid;
u64 start;
u64 len;
u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
__u32 pid;
__u32 tid;
u32 pid;
u32 tid;
char comm[16];
};
@ -77,10 +81,10 @@ struct mmap_data {
static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
static unsigned int mmap_read_head(struct mmap_data *md)
static unsigned long mmap_read_head(struct mmap_data *md)
{
struct perf_counter_mmap_page *pc = md->base;
int head;
long head;
head = pc->data_head;
rmb();
@ -88,6 +92,32 @@ static unsigned int mmap_read_head(struct mmap_data *md)
return head;
}
static void mmap_write_tail(struct mmap_data *md, unsigned long tail)
{
struct perf_counter_mmap_page *pc = md->base;
/*
* ensure all reads are done before we write the tail out.
*/
/* mb(); */
pc->data_tail = tail;
}
static void write_output(void *buf, size_t size)
{
while (size) {
int ret = write(output, buf, size);
if (ret < 0)
die("failed to write");
size -= ret;
buf += ret;
bytes_written += ret;
}
}
static void mmap_read(struct mmap_data *md)
{
unsigned int head = mmap_read_head(md);
@ -108,7 +138,7 @@ static void mmap_read(struct mmap_data *md)
* In either case, truncate and restart at head.
*/
diff = head - old;
if (diff > md->mask / 2 || diff < 0) {
if (diff < 0) {
struct timeval iv;
unsigned long msecs;
@ -136,36 +166,17 @@ static void mmap_read(struct mmap_data *md)
size = md->mask + 1 - (old & md->mask);
old += size;
while (size) {
int ret = write(output, buf, size);
if (ret < 0)
die("failed to write");
size -= ret;
buf += ret;
bytes_written += ret;
}
write_output(buf, size);
}
buf = &data[old & md->mask];
size = head - old;
old += size;
while (size) {
int ret = write(output, buf, size);
if (ret < 0)
die("failed to write");
size -= ret;
buf += ret;
bytes_written += ret;
}
write_output(buf, size);
md->prev = old;
mmap_write_tail(md, old);
}
static volatile int done = 0;
@ -191,7 +202,7 @@ static void pid_synthesize_comm_event(pid_t pid, int full)
struct comm_event comm_ev;
char filename[PATH_MAX];
char bf[BUFSIZ];
int fd, ret;
int fd;
size_t size;
char *field, *sep;
DIR *tasks;
@ -201,8 +212,12 @@ static void pid_synthesize_comm_event(pid_t pid, int full)
fd = open(filename, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "couldn't open %s\n", filename);
exit(EXIT_FAILURE);
/*
* We raced with a task exiting - just return:
*/
if (verbose)
fprintf(stderr, "couldn't open %s\n", filename);
return;
}
if (read(fd, bf, sizeof(bf)) < 0) {
fprintf(stderr, "couldn't read %s\n", filename);
@ -223,17 +238,13 @@ static void pid_synthesize_comm_event(pid_t pid, int full)
comm_ev.pid = pid;
comm_ev.header.type = PERF_EVENT_COMM;
size = ALIGN(size, sizeof(__u64));
size = ALIGN(size, sizeof(u64));
comm_ev.header.size = sizeof(comm_ev) - (sizeof(comm_ev.comm) - size);
if (!full) {
comm_ev.tid = pid;
ret = write(output, &comm_ev, comm_ev.header.size);
if (ret < 0) {
perror("failed to write");
exit(-1);
}
write_output(&comm_ev, comm_ev.header.size);
return;
}
@ -248,11 +259,7 @@ static void pid_synthesize_comm_event(pid_t pid, int full)
comm_ev.tid = pid;
ret = write(output, &comm_ev, comm_ev.header.size);
if (ret < 0) {
perror("failed to write");
exit(-1);
}
write_output(&comm_ev, comm_ev.header.size);
}
closedir(tasks);
return;
@ -272,8 +279,12 @@ static void pid_synthesize_mmap_samples(pid_t pid)
fp = fopen(filename, "r");
if (fp == NULL) {
fprintf(stderr, "couldn't open %s\n", filename);
exit(EXIT_FAILURE);
/*
* We raced with a task exiting - just return:
*/
if (verbose)
fprintf(stderr, "couldn't open %s\n", filename);
return;
}
while (1) {
char bf[BUFSIZ], *pbf = bf;
@ -304,17 +315,14 @@ static void pid_synthesize_mmap_samples(pid_t pid)
size = strlen(execname);
execname[size - 1] = '\0'; /* Remove \n */
memcpy(mmap_ev.filename, execname, size);
size = ALIGN(size, sizeof(__u64));
size = ALIGN(size, sizeof(u64));
mmap_ev.len -= mmap_ev.start;
mmap_ev.header.size = (sizeof(mmap_ev) -
(sizeof(mmap_ev.filename) - size));
mmap_ev.pid = pid;
mmap_ev.tid = pid;
if (write(output, &mmap_ev, mmap_ev.header.size) < 0) {
perror("failed to write");
exit(-1);
}
write_output(&mmap_ev, mmap_ev.header.size);
}
}
@ -351,11 +359,25 @@ static void create_counter(int counter, int cpu, pid_t pid)
int track = 1;
attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
if (freq) {
attr->sample_type |= PERF_SAMPLE_PERIOD;
attr->freq = 1;
attr->sample_freq = freq;
}
if (call_graph)
attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
if (file_new) {
file_header.sample_type = attr->sample_type;
} else {
if (file_header.sample_type != attr->sample_type) {
fprintf(stderr, "incompatible append\n");
exit(-1);
}
}
attr->mmap = track;
attr->comm = track;
attr->inherit = (cpu < 0) && inherit;
@ -410,7 +432,7 @@ try_again:
mmap_array[nr_cpu][counter].prev = 0;
mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
PROT_READ, MAP_SHARED, fd[nr_cpu][counter], 0);
PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
error("failed to mmap with %d (%s)\n", errno, strerror(errno));
exit(-1);
@ -435,6 +457,14 @@ static void open_counters(int cpu, pid_t pid)
nr_cpu++;
}
static void atexit_header(void)
{
file_header.data_size += bytes_written;
if (pwrite(output, &file_header, sizeof(file_header), 0) == -1)
perror("failed to write on file headers");
}
static int __cmd_record(int argc, const char **argv)
{
int i, counter;
@ -448,6 +478,10 @@ static int __cmd_record(int argc, const char **argv)
assert(nr_cpus <= MAX_NR_CPUS);
assert(nr_cpus >= 0);
atexit(sig_atexit);
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
if (!stat(output_name, &st) && !force && !append_file) {
fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
output_name);
@ -456,7 +490,7 @@ static int __cmd_record(int argc, const char **argv)
flags = O_CREAT|O_RDWR;
if (append_file)
flags |= O_APPEND;
file_new = 0;
else
flags |= O_TRUNC;
@ -466,15 +500,22 @@ static int __cmd_record(int argc, const char **argv)
exit(-1);
}
if (!file_new) {
if (read(output, &file_header, sizeof(file_header)) == -1) {
perror("failed to read file headers");
exit(-1);
}
lseek(output, file_header.data_size, SEEK_CUR);
}
atexit(atexit_header);
if (!system_wide) {
open_counters(-1, target_pid != -1 ? target_pid : getpid());
} else for (i = 0; i < nr_cpus; i++)
open_counters(i, target_pid);
atexit(sig_atexit);
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
if (target_pid == -1 && argc) {
pid = fork();
if (pid < 0)
@ -555,6 +596,8 @@ static const struct option options[] = {
"profile at this frequency"),
OPT_INTEGER('m', "mmap-pages", &mmap_pages,
"number of mmap data pages"),
OPT_BOOLEAN('g', "call-graph", &call_graph,
"do call-graph (stack chain/backtrace) recording"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show counter open errors, etc)"),
OPT_END()

439
tools/perf/builtin-report.c
View File

@ -36,45 +36,65 @@ static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
static int dump_trace = 0;
#define dprintf(x...) do { if (dump_trace) printf(x); } while (0)
#define cdprintf(x...) do { if (dump_trace) color_fprintf(stdout, color, x); } while (0)
static int verbose;
#define eprintf(x...) do { if (verbose) fprintf(stderr, x); } while (0)
static int full_paths;
static unsigned long page_size;
static unsigned long mmap_window = 32;
static char default_parent_pattern[] = "^sys_|^do_page_fault";
static char *parent_pattern = default_parent_pattern;
static regex_t parent_regex;
static int exclude_other = 1;
struct ip_event {
struct perf_event_header header;
__u64 ip;
__u32 pid, tid;
__u64 period;
u64 ip;
u32 pid, tid;
unsigned char __more_data[];
};
struct ip_callchain {
u64 nr;
u64 ips[0];
};
struct mmap_event {
struct perf_event_header header;
__u32 pid, tid;
__u64 start;
__u64 len;
__u64 pgoff;
u32 pid, tid;
u64 start;
u64 len;
u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
__u32 pid, tid;
u32 pid, tid;
char comm[16];
};
struct fork_event {
struct perf_event_header header;
__u32 pid, ppid;
u32 pid, ppid;
};
struct period_event {
struct perf_event_header header;
__u64 time;
__u64 id;
__u64 sample_period;
u64 time;
u64 id;
u64 sample_period;
};
struct lost_event {
struct perf_event_header header;
u64 id;
u64 lost;
};
typedef union event_union {
@ -84,6 +104,7 @@ typedef union event_union {
struct comm_event comm;
struct fork_event fork;
struct period_event period;
struct lost_event lost;
} event_t;
static LIST_HEAD(dsos);
@ -119,15 +140,11 @@ static struct dso *dsos__findnew(const char *name)
nr = dso__load(dso, NULL, verbose);
if (nr < 0) {
if (verbose)
fprintf(stderr, "Failed to open: %s\n", name);
eprintf("Failed to open: %s\n", name);
goto out_delete_dso;
}
if (!nr && verbose) {
fprintf(stderr,
"No symbols found in: %s, maybe install a debug package?\n",
name);
}
if (!nr)
eprintf("No symbols found in: %s, maybe install a debug package?\n", name);
dsos__add(dso);
@ -146,7 +163,7 @@ static void dsos__fprintf(FILE *fp)
dso__fprintf(pos, fp);
}
static struct symbol *vdso__find_symbol(struct dso *dso, __u64 ip)
static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
{
return dso__find_symbol(kernel_dso, ip);
}
@ -193,19 +210,19 @@ static int strcommon(const char *pathname)
struct map {
struct list_head node;
__u64 start;
__u64 end;
__u64 pgoff;
__u64 (*map_ip)(struct map *, __u64);
u64 start;
u64 end;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
static __u64 map__map_ip(struct map *map, __u64 ip)
static u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
static __u64 vdso__map_ip(struct map *map, __u64 ip)
static u64 vdso__map_ip(struct map *map, u64 ip)
{
return ip;
}
@ -412,7 +429,7 @@ static int thread__fork(struct thread *self, struct thread *parent)
return 0;
}
static struct map *thread__find_map(struct thread *self, __u64 ip)
static struct map *thread__find_map(struct thread *self, u64 ip)
{
struct map *pos;
@ -453,10 +470,11 @@ struct hist_entry {
struct map *map;
struct dso *dso;
struct symbol *sym;
__u64 ip;
struct symbol *parent;
u64 ip;
char level;
__u64 count;
u64 count;
};
/*
@ -473,6 +491,16 @@ struct sort_entry {
size_t (*print)(FILE *fp, struct hist_entry *);
};
static int64_t cmp_null(void *l, void *r)
{
if (!l && !r)
return 0;
else if (!l)
return -1;
else
return 1;
}
/* --sort pid */
static int64_t
@ -507,14 +535,8 @@ sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
char *comm_l = left->thread->comm;
char *comm_r = right->thread->comm;
if (!comm_l || !comm_r) {
if (!comm_l && !comm_r)
return 0;
else if (!comm_l)
return -1;
else
return 1;
}
if (!comm_l || !comm_r)
return cmp_null(comm_l, comm_r);
return strcmp(comm_l, comm_r);
}
@ -540,14 +562,8 @@ sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
struct dso *dso_l = left->dso;
struct dso *dso_r = right->dso;
if (!dso_l || !dso_r) {
if (!dso_l && !dso_r)
return 0;
else if (!dso_l)
return -1;
else
return 1;
}
if (!dso_l || !dso_r)
return cmp_null(dso_l, dso_r);
return strcmp(dso_l->name, dso_r->name);
}
@ -558,7 +574,7 @@ sort__dso_print(FILE *fp, struct hist_entry *self)
if (self->dso)
return fprintf(fp, "%-25s", self->dso->name);
return fprintf(fp, "%016llx ", (__u64)self->ip);
return fprintf(fp, "%016llx ", (u64)self->ip);
}
static struct sort_entry sort_dso = {
@ -572,7 +588,7 @@ static struct sort_entry sort_dso = {
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
__u64 ip_l, ip_r;
u64 ip_l, ip_r;
if (left->sym == right->sym)
return 0;
@ -589,13 +605,13 @@ sort__sym_print(FILE *fp, struct hist_entry *self)
size_t ret = 0;
if (verbose)
ret += fprintf(fp, "%#018llx ", (__u64)self->ip);
ret += fprintf(fp, "%#018llx ", (u64)self->ip);
if (self->sym) {
ret += fprintf(fp, "[%c] %s",
self->dso == kernel_dso ? 'k' : '.', self->sym->name);
} else {
ret += fprintf(fp, "%#016llx", (__u64)self->ip);
ret += fprintf(fp, "%#016llx", (u64)self->ip);
}
return ret;
@ -607,7 +623,38 @@ static struct sort_entry sort_sym = {
.print = sort__sym_print,
};
/* --sort parent */
static int64_t
sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
{
struct symbol *sym_l = left->parent;
struct symbol *sym_r = right->parent;
if (!sym_l || !sym_r)
return cmp_null(sym_l, sym_r);
return strcmp(sym_l->name, sym_r->name);
}
static size_t
sort__parent_print(FILE *fp, struct hist_entry *self)
{
size_t ret = 0;
ret += fprintf(fp, "%-20s", self->parent ? self->parent->name : "[other]");
return ret;
}
static struct sort_entry sort_parent = {
.header = "Parent symbol ",
.cmp = sort__parent_cmp,
.print = sort__parent_print,
};
static int sort__need_collapse = 0;
static int sort__has_parent = 0;
struct sort_dimension {
char *name;
@ -620,6 +667,7 @@ static struct sort_dimension sort_dimensions[] = {
{ .name = "comm", .entry = &sort_comm, },
{ .name = "dso", .entry = &sort_dso, },
{ .name = "symbol", .entry = &sort_sym, },
{ .name = "parent", .entry = &sort_parent, },
};
static LIST_HEAD(hist_entry__sort_list);
@ -640,6 +688,19 @@ static int sort_dimension__add(char *tok)
if (sd->entry->collapse)
sort__need_collapse = 1;
if (sd->entry == &sort_parent) {
int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
if (ret) {
char err[BUFSIZ];
regerror(ret, &parent_regex, err, sizeof(err));
fprintf(stderr, "Invalid regex: %s\n%s",
parent_pattern, err);
exit(-1);
}
sort__has_parent = 1;
}
list_add_tail(&sd->entry->list, &hist_entry__sort_list);
sd->taken = 1;
@ -684,11 +745,14 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
}
static size_t
hist_entry__fprintf(FILE *fp, struct hist_entry *self, __u64 total_samples)
hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
{
struct sort_entry *se;
size_t ret;
if (exclude_other && !self->parent)
return 0;
if (total_samples) {
double percent = self->count * 100.0 / total_samples;
char *color = PERF_COLOR_NORMAL;
@ -711,6 +775,9 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, __u64 total_samples)
ret = fprintf(fp, "%12Ld ", self->count);
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (exclude_other && (se == &sort_parent))
continue;
fprintf(fp, " ");
ret += se->print(fp, self);
}
@ -720,13 +787,73 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, __u64 total_samples)
return ret;
}
/*
*
*/
static struct symbol *
resolve_symbol(struct thread *thread, struct map **mapp,
struct dso **dsop, u64 *ipp)
{
struct dso *dso = dsop ? *dsop : NULL;
struct map *map = mapp ? *mapp : NULL;
uint64_t ip = *ipp;
if (!thread)
return NULL;
if (dso)
goto got_dso;
if (map)
goto got_map;
map = thread__find_map(thread, ip);
if (map != NULL) {
if (mapp)
*mapp = map;
got_map:
ip = map->map_ip(map, ip);
*ipp = ip;
dso = map->dso;
} else {
/*
* If this is outside of all known maps,
* and is a negative address, try to look it
* up in the kernel dso, as it might be a
* vsyscall (which executes in user-mode):
*/
if ((long long)ip < 0)
dso = kernel_dso;
}
dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
if (dsop)
*dsop = dso;
if (!dso)
return NULL;
got_dso:
return dso->find_symbol(dso, ip);
}
static int call__match(struct symbol *sym)
{
if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
return 1;
return 0;
}
/*
* collect histogram counts
*/
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
struct symbol *sym, __u64 ip, char level, __u64 count)
struct symbol *sym, u64 ip, struct ip_callchain *chain,
char level, u64 count)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
@ -739,9 +866,41 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
.ip = ip,
.level = level,
.count = count,
.parent = NULL,
};
int cmp;
if (sort__has_parent && chain) {
u64 context = PERF_CONTEXT_MAX;
int i;
for (i = 0; i < chain->nr; i++) {
u64 ip = chain->ips[i];
struct dso *dso = NULL;
struct symbol *sym;
if (ip >= PERF_CONTEXT_MAX) {
context = ip;
continue;
}
switch (context) {
case PERF_CONTEXT_KERNEL:
dso = kernel_dso;
break;
default:
break;
}
sym = resolve_symbol(thread, NULL, &dso, &ip);
if (sym && call__match(sym)) {
entry.parent = sym;
break;
}
}
}
while (*p != NULL) {
parent = *p;
he = rb_entry(parent, struct hist_entry, rb_node);
@ -873,7 +1032,7 @@ static void output__resort(void)
}
}
static size_t output__fprintf(FILE *fp, __u64 total_samples)
static size_t output__fprintf(FILE *fp, u64 total_samples)
{
struct hist_entry *pos;
struct sort_entry *se;
@ -882,18 +1041,24 @@ static size_t output__fprintf(FILE *fp, __u64 total_samples)
fprintf(fp, "\n");
fprintf(fp, "#\n");
fprintf(fp, "# (%Ld samples)\n", (__u64)total_samples);
fprintf(fp, "# (%Ld samples)\n", (u64)total_samples);
fprintf(fp, "#\n");
fprintf(fp, "# Overhead");
list_for_each_entry(se, &hist_entry__sort_list, list)
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (exclude_other && (se == &sort_parent))
continue;
fprintf(fp, " %s", se->header);
}
fprintf(fp, "\n");
fprintf(fp, "# ........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
int i;
if (exclude_other && (se == &sort_parent))
continue;
fprintf(fp, " ");
for (i = 0; i < strlen(se->header); i++)
fprintf(fp, ".");
@ -907,7 +1072,8 @@ static size_t output__fprintf(FILE *fp, __u64 total_samples)
ret += hist_entry__fprintf(fp, pos, total_samples);
}
if (!strcmp(sort_order, default_sort_order)) {
if (sort_order == default_sort_order &&
parent_pattern == default_parent_pattern) {
fprintf(fp, "#\n");
fprintf(fp, "# (For more details, try: perf report --sort comm,dso,symbol)\n");
fprintf(fp, "#\n");
@ -932,7 +1098,21 @@ static unsigned long total = 0,
total_mmap = 0,
total_comm = 0,
total_fork = 0,
total_unknown = 0;
total_unknown = 0,
total_lost = 0;
static int validate_chain(struct ip_callchain *chain, event_t *event)
{
unsigned int chain_size;
chain_size = event->header.size;
chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
if (chain->nr*sizeof(u64) > chain_size)
return -1;
return 0;
}
static int
process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
@ -941,12 +1121,16 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
int show = 0;
struct dso *dso = NULL;
struct thread *thread = threads__findnew(event->ip.pid);
__u64 ip = event->ip.ip;
__u64 period = 1;
u64 ip = event->ip.ip;
u64 period = 1;
struct map *map = NULL;
void *more_data = event->ip.__more_data;
struct ip_callchain *chain = NULL;
if (event->header.type & PERF_SAMPLE_PERIOD)
period = event->ip.period;
if (event->header.type & PERF_SAMPLE_PERIOD) {
period = *(u64 *)more_data;
more_data += sizeof(u64);
}
dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p period: %Ld\n",
(void *)(offset + head),
@ -956,10 +1140,28 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
(void *)(long)ip,
(long long)period);
if (event->header.type & PERF_SAMPLE_CALLCHAIN) {
int i;
chain = (void *)more_data;
dprintf("... chain: nr:%Lu\n", chain->nr);
if (validate_chain(chain, event) < 0) {
eprintf("call-chain problem with event, skipping it.\n");
return 0;
}
if (dump_trace) {
for (i = 0; i < chain->nr; i++)
dprintf("..... %2d: %016Lx\n", i, chain->ips[i]);
}
}
dprintf(" ... thread: %s:%d\n", thread->comm, thread->pid);
if (thread == NULL) {
fprintf(stderr, "problem processing %d event, skipping it.\n",
eprintf("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
@ -977,22 +1179,6 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
show = SHOW_USER;
level = '.';
map = thread__find_map(thread, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
dso = map->dso;
} else {
/*
* If this is outside of all known maps,
* and is a negative address, try to look it
* up in the kernel dso, as it might be a
* vsyscall (which executes in user-mode):
*/
if ((long long)ip < 0)
dso = kernel_dso;
}
dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
} else {
show = SHOW_HV;
level = 'H';
@ -1000,14 +1186,10 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
}
if (show & show_mask) {
struct symbol *sym = NULL;
struct symbol *sym = resolve_symbol(thread, &map, &dso, &ip);
if (dso)
sym = dso->find_symbol(dso, ip);
if (hist_entry__add(thread, map, dso, sym, ip, level, period)) {
fprintf(stderr,
"problem incrementing symbol count, skipping event\n");
if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
eprintf("problem incrementing symbol count, skipping event\n");
return -1;
}
}
@ -1095,9 +1277,61 @@ process_period_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
static int
process_lost_event(event_t *event, unsigned long offset, unsigned long head)
{
dprintf("%p [%p]: PERF_EVENT_LOST: id:%Ld: lost:%Ld\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->lost.id,
event->lost.lost);
total_lost += event->lost.lost;
return 0;
}
static void trace_event(event_t *event)
{
unsigned char *raw_event = (void *)event;
char *color = PERF_COLOR_BLUE;
int i, j;
if (!dump_trace)
return;
dprintf(".");
cdprintf("\n. ... raw event: size %d bytes\n", event->header.size);
for (i = 0; i < event->header.size; i++) {
if ((i & 15) == 0) {
dprintf(".");
cdprintf(" %04x: ", i);
}
cdprintf(" %02x", raw_event[i]);
if (((i & 15) == 15) || i == event->header.size-1) {
cdprintf(" ");
for (j = 0; j < 15-(i & 15); j++)
cdprintf(" ");
for (j = 0; j < (i & 15); j++) {
if (isprint(raw_event[i-15+j]))
cdprintf("%c", raw_event[i-15+j]);
else
cdprintf(".");
}
cdprintf("\n");
}
}
dprintf(".\n");
}
static int
process_event(event_t *event, unsigned long offset, unsigned long head)
{
trace_event(event);
if (event->header.misc & PERF_EVENT_MISC_OVERFLOW)
return process_overflow_event(event, offset, head);
@ -1113,6 +1347,10 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
case PERF_EVENT_PERIOD:
return process_period_event(event, offset, head);
case PERF_EVENT_LOST:
return process_lost_event(event, offset, head);
/*
* We dont process them right now but they are fine:
*/
@ -1128,11 +1366,13 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
static struct perf_file_header file_header;
static int __cmd_report(void)
{
int ret, rc = EXIT_FAILURE;
unsigned long offset = 0;
unsigned long head = 0;
unsigned long head = sizeof(file_header);
struct stat stat;
event_t *event;
uint32_t size;
@ -1160,6 +1400,17 @@ static int __cmd_report(void)
exit(0);
}
if (read(input, &file_header, sizeof(file_header)) == -1) {
perror("failed to read file headers");
exit(-1);
}
if (sort__has_parent &&
!(file_header.sample_type & PERF_SAMPLE_CALLCHAIN)) {
fprintf(stderr, "selected --sort parent, but no callchain data\n");
exit(-1);
}
if (load_kernel() < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
@ -1204,7 +1455,7 @@ more:
size = event->header.size;
dprintf("%p [%p]: event: %d\n",
dprintf("\n%p [%p]: event: %d\n",
(void *)(offset + head),
(void *)(long)event->header.size,
event->header.type);
@ -1231,9 +1482,13 @@ more:
head += size;
if (offset + head >= sizeof(file_header) + file_header.data_size)
goto done;
if (offset + head < stat.st_size)
goto more;
done:
rc = EXIT_SUCCESS;
close(input);
@ -1241,6 +1496,7 @@ more:
dprintf(" mmap events: %10ld\n", total_mmap);
dprintf(" comm events: %10ld\n", total_comm);
dprintf(" fork events: %10ld\n", total_fork);
dprintf(" lost events: %10ld\n", total_lost);
dprintf(" unknown events: %10ld\n", total_unknown);
if (dump_trace)
@ -1273,9 +1529,13 @@ static const struct option options[] = {
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
"sort by key(s): pid, comm, dso, symbol. Default: pid,symbol"),
"sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('P', "full-paths", &full_paths,
"Don't shorten the pathnames taking into account the cwd"),
OPT_STRING('p', "parent", &parent_pattern, "regex",
"regex filter to identify parent, see: '--sort parent'"),
OPT_BOOLEAN('x', "exclude-other", &exclude_other,
"Only display entries with parent-match"),
OPT_END()
};
@ -1304,6 +1564,11 @@ int cmd_report(int argc, const char **argv, const char *prefix)
setup_sorting();
if (parent_pattern != default_parent_pattern)
sort_dimension__add("parent");
else
exclude_other = 0;
/*
* Any (unrecognized) arguments left?
*/

310
tools/perf/builtin-stat.c
View File

@ -43,6 +43,7 @@
#include "util/parse-events.h"
#include <sys/prctl.h>
#include <math.h>
static struct perf_counter_attr default_attrs[MAX_COUNTERS] = {
@ -79,12 +80,34 @@ static const unsigned int default_count[] = {
10000,
};
static __u64 event_res[MAX_COUNTERS][3];
static __u64 event_scaled[MAX_COUNTERS];
#define MAX_RUN 100
static __u64 runtime_nsecs;
static __u64 walltime_nsecs;
static __u64 runtime_cycles;
static int run_count = 1;
static int run_idx = 0;
static u64 event_res[MAX_RUN][MAX_COUNTERS][3];
static u64 event_scaled[MAX_RUN][MAX_COUNTERS];
//static u64 event_hist[MAX_RUN][MAX_COUNTERS][3];
static u64 runtime_nsecs[MAX_RUN];
static u64 walltime_nsecs[MAX_RUN];
static u64 runtime_cycles[MAX_RUN];
static u64 event_res_avg[MAX_COUNTERS][3];
static u64 event_res_noise[MAX_COUNTERS][3];
static u64 event_scaled_avg[MAX_COUNTERS];
static u64 runtime_nsecs_avg;
static u64 runtime_nsecs_noise;
static u64 walltime_nsecs_avg;
static u64 walltime_nsecs_noise;
static u64 runtime_cycles_avg;
static u64 runtime_cycles_noise;
static void create_perf_stat_counter(int counter)
{
@ -135,12 +158,12 @@ static inline int nsec_counter(int counter)
*/
static void read_counter(int counter)
{
__u64 *count, single_count[3];
u64 *count, single_count[3];
ssize_t res;
int cpu, nv;
int scaled;
count = event_res[counter];
count = event_res[run_idx][counter];
count[0] = count[1] = count[2] = 0;
@ -149,8 +172,10 @@ static void read_counter(int counter)
if (fd[cpu][counter] < 0)
continue;
res = read(fd[cpu][counter], single_count, nv * sizeof(__u64));
assert(res == nv * sizeof(__u64));
res = read(fd[cpu][counter], single_count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
close(fd[cpu][counter]);
fd[cpu][counter] = -1;
count[0] += single_count[0];
if (scale) {
@ -162,13 +187,13 @@ static void read_counter(int counter)
scaled = 0;
if (scale) {
if (count[2] == 0) {
event_scaled[counter] = -1;
event_scaled[run_idx][counter] = -1;
count[0] = 0;
return;
}
if (count[2] < count[1]) {
event_scaled[counter] = 1;
event_scaled[run_idx][counter] = 1;
count[0] = (unsigned long long)
((double)count[0] * count[1] / count[2] + 0.5);
}
@ -178,68 +203,18 @@ static void read_counter(int counter)
*/
if (attrs[counter].type == PERF_TYPE_SOFTWARE &&
attrs[counter].config == PERF_COUNT_SW_TASK_CLOCK)
runtime_nsecs = count[0];
runtime_nsecs[run_idx] = count[0];
if (attrs[counter].type == PERF_TYPE_HARDWARE &&
attrs[counter].config == PERF_COUNT_HW_CPU_CYCLES)
runtime_cycles = count[0];
runtime_cycles[run_idx] = count[0];
}
/*
* Print out the results of a single counter:
*/
static void print_counter(int counter)
{
__u64 *count;
int scaled;
count = event_res[counter];
scaled = event_scaled[counter];
if (scaled == -1) {
fprintf(stderr, " %14s %-20s\n",
"<not counted>", event_name(counter));
return;
}
if (nsec_counter(counter)) {
double msecs = (double)count[0] / 1000000;
fprintf(stderr, " %14.6f %-20s",
msecs, event_name(counter));
if (attrs[counter].type == PERF_TYPE_SOFTWARE &&
attrs[counter].config == PERF_COUNT_SW_TASK_CLOCK) {
if (walltime_nsecs)
fprintf(stderr, " # %11.3f CPU utilization factor",
(double)count[0] / (double)walltime_nsecs);
}
} else {
fprintf(stderr, " %14Ld %-20s",
count[0], event_name(counter));
if (runtime_nsecs)
fprintf(stderr, " # %11.3f M/sec",
(double)count[0]/runtime_nsecs*1000.0);
if (runtime_cycles &&
attrs[counter].type == PERF_TYPE_HARDWARE &&
attrs[counter].config == PERF_COUNT_HW_INSTRUCTIONS) {
fprintf(stderr, " # %1.3f per cycle",
(double)count[0] / (double)runtime_cycles);
}
}
if (scaled)
fprintf(stderr, " (scaled from %.2f%%)",
(double) count[2] / count[1] * 100);
fprintf(stderr, "\n");
}
static int do_perf_stat(int argc, const char **argv)
static int run_perf_stat(int argc, const char **argv)
{
unsigned long long t0, t1;
int status = 0;
int counter;
int status;
int pid;
int i;
if (!system_wide)
nr_cpus = 1;
@ -263,13 +238,180 @@ static int do_perf_stat(int argc, const char **argv)
}
}
while (wait(&status) >= 0)
;
wait(&status);
prctl(PR_TASK_PERF_COUNTERS_DISABLE);
t1 = rdclock();
walltime_nsecs = t1 - t0;
walltime_nsecs[run_idx] = t1 - t0;
for (counter = 0; counter < nr_counters; counter++)
read_counter(counter);
return WEXITSTATUS(status);
}
static void print_noise(u64 *count, u64 *noise)
{
if (run_count > 1)
fprintf(stderr, " ( +- %7.3f%% )",
(double)noise[0]/(count[0]+1)*100.0);
}
static void nsec_printout(int counter, u64 *count, u64 *noise)
{
double msecs = (double)count[0] / 1000000;
fprintf(stderr, " %14.6f %-20s", msecs, event_name(counter));
if (attrs[counter].type == PERF_TYPE_SOFTWARE &&
attrs[counter].config == PERF_COUNT_SW_TASK_CLOCK) {
if (walltime_nsecs_avg)
fprintf(stderr, " # %10.3f CPUs ",
(double)count[0] / (double)walltime_nsecs_avg);
}
print_noise(count, noise);
}
static void abs_printout(int counter, u64 *count, u64 *noise)
{
fprintf(stderr, " %14Ld %-20s", count[0], event_name(counter));
if (runtime_cycles_avg &&
attrs[counter].type == PERF_TYPE_HARDWARE &&
attrs[counter].config == PERF_COUNT_HW_INSTRUCTIONS) {
fprintf(stderr, " # %10.3f IPC ",
(double)count[0] / (double)runtime_cycles_avg);
} else {
if (runtime_nsecs_avg) {
fprintf(stderr, " # %10.3f M/sec",
(double)count[0]/runtime_nsecs_avg*1000.0);
}
}
print_noise(count, noise);
}
/*
* Print out the results of a single counter:
*/
static void print_counter(int counter)
{
u64 *count, *noise;
int scaled;
count = event_res_avg[counter];
noise = event_res_noise[counter];
scaled = event_scaled_avg[counter];
if (scaled == -1) {
fprintf(stderr, " %14s %-20s\n",
"<not counted>", event_name(counter));
return;
}
if (nsec_counter(counter))
nsec_printout(counter, count, noise);
else
abs_printout(counter, count, noise);
if (scaled)
fprintf(stderr, " (scaled from %.2f%%)",
(double) count[2] / count[1] * 100);
fprintf(stderr, "\n");
}
/*
* normalize_noise noise values down to stddev:
*/
static void normalize_noise(u64 *val)
{
double res;
res = (double)*val / (run_count * sqrt((double)run_count));
*val = (u64)res;
}
static void update_avg(const char *name, int idx, u64 *avg, u64 *val)
{
*avg += *val;
if (verbose > 1)
fprintf(stderr, "debug: %20s[%d]: %Ld\n", name, idx, *val);
}
/*
* Calculate the averages and noises:
*/
static void calc_avg(void)
{
int i, j;
if (verbose > 1)
fprintf(stderr, "\n");
for (i = 0; i < run_count; i++) {
update_avg("runtime", 0, &runtime_nsecs_avg, runtime_nsecs + i);
update_avg("walltime", 0, &walltime_nsecs_avg, walltime_nsecs + i);
update_avg("runtime_cycles", 0, &runtime_cycles_avg, runtime_cycles + i);
for (j = 0; j < nr_counters; j++) {
update_avg("counter/0", j,
event_res_avg[j]+0, event_res[i][j]+0);
update_avg("counter/1", j,
event_res_avg[j]+1, event_res[i][j]+1);
update_avg("counter/2", j,
event_res_avg[j]+2, event_res[i][j]+2);
update_avg("scaled", j,
event_scaled_avg + j, event_scaled[i]+j);
}
}
runtime_nsecs_avg /= run_count;
walltime_nsecs_avg /= run_count;
runtime_cycles_avg /= run_count;
for (j = 0; j < nr_counters; j++) {
event_res_avg[j][0] /= run_count;
event_res_avg[j][1] /= run_count;
event_res_avg[j][2] /= run_count;
}
for (i = 0; i < run_count; i++) {
runtime_nsecs_noise +=
abs((s64)(runtime_nsecs[i] - runtime_nsecs_avg));
walltime_nsecs_noise +=
abs((s64)(walltime_nsecs[i] - walltime_nsecs_avg));
runtime_cycles_noise +=
abs((s64)(runtime_cycles[i] - runtime_cycles_avg));
for (j = 0; j < nr_counters; j++) {
event_res_noise[j][0] +=
abs((s64)(event_res[i][j][0] - event_res_avg[j][0]));
event_res_noise[j][1] +=
abs((s64)(event_res[i][j][1] - event_res_avg[j][1]));
event_res_noise[j][2] +=
abs((s64)(event_res[i][j][2] - event_res_avg[j][2]));
}
}
normalize_noise(&runtime_nsecs_noise);
normalize_noise(&walltime_nsecs_noise);
normalize_noise(&runtime_cycles_noise);
for (j = 0; j < nr_counters; j++) {
normalize_noise(&event_res_noise[j][0]);
normalize_noise(&event_res_noise[j][1]);
normalize_noise(&event_res_noise[j][2]);
}
}
static void print_stat(int argc, const char **argv)
{
int i, counter;
calc_avg();
fflush(stdout);
@ -279,22 +421,19 @@ static int do_perf_stat(int argc, const char **argv)
for (i = 1; i < argc; i++)
fprintf(stderr, " %s", argv[i]);
fprintf(stderr, "\':\n");
fprintf(stderr, "\n");
for (counter = 0; counter < nr_counters; counter++)
read_counter(counter);
fprintf(stderr, "\'");
if (run_count > 1)
fprintf(stderr, " (%d runs)", run_count);
fprintf(stderr, ":\n\n");
for (counter = 0; counter < nr_counters; counter++)
print_counter(counter);
fprintf(stderr, "\n");
fprintf(stderr, " Wall-clock time elapsed: %12.6f msecs\n",
(double)(t1-t0)/1e6);
fprintf(stderr, " %14.9f seconds time elapsed.\n",
(double)walltime_nsecs_avg/1e9);
fprintf(stderr, "\n");
return 0;
}
static volatile int signr = -1;
@ -332,11 +471,15 @@ static const struct option options[] = {
"scale/normalize counters"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show counter open errors, etc)"),
OPT_INTEGER('r', "repeat", &run_count,
"repeat command and print average + stddev (max: 100)"),
OPT_END()
};
int cmd_stat(int argc, const char **argv, const char *prefix)
{
int status;
page_size = sysconf(_SC_PAGE_SIZE);
memcpy(attrs, default_attrs, sizeof(attrs));
@ -344,6 +487,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, options, stat_usage, 0);
if (!argc)
usage_with_options(stat_usage, options);
if (run_count <= 0 || run_count > MAX_RUN)
usage_with_options(stat_usage, options);
if (!nr_counters)
nr_counters = 8;
@ -363,5 +508,14 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
signal(SIGALRM, skip_signal);
signal(SIGABRT, skip_signal);
return do_perf_stat(argc, argv);
status = 0;
for (run_idx = 0; run_idx < run_count; run_idx++) {
if (run_count != 1 && verbose)
fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx+1);
status = run_perf_stat(argc, argv);
}
print_stat(argc, argv);
return status;
}

24
tools/perf/builtin-top.c
View File

@ -54,7 +54,7 @@ static int system_wide = 0;
static int default_interval = 100000;
static __u64 count_filter = 5;
static u64 count_filter = 5;
static int print_entries = 15;
static int target_pid = -1;
@ -79,8 +79,8 @@ static int dump_symtab;
* Symbols
*/
static __u64 min_ip;
static __u64 max_ip = -1ll;
static u64 min_ip;
static u64 max_ip = -1ll;
struct sym_entry {
struct rb_node rb_node;
@ -194,7 +194,7 @@ static void print_sym_table(void)
100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
if (nr_counters == 1) {
printf("%Ld", attrs[0].sample_period);
printf("%Ld", (u64)attrs[0].sample_period);
if (freq)
printf("Hz ");
else
@ -372,7 +372,7 @@ out_delete_dso:
/*
* Binary search in the histogram table and record the hit:
*/
static void record_ip(__u64 ip, int counter)
static void record_ip(u64 ip, int counter)
{
struct symbol *sym = dso__find_symbol(kernel_dso, ip);
@ -392,7 +392,7 @@ static void record_ip(__u64 ip, int counter)
samples--;
}
static void process_event(__u64 ip, int counter)
static void process_event(u64 ip, int counter)
{
samples++;
@ -463,15 +463,15 @@ static void mmap_read_counter(struct mmap_data *md)
for (; old != head;) {
struct ip_event {
struct perf_event_header header;
__u64 ip;
__u32 pid, target_pid;
u64 ip;
u32 pid, target_pid;
};
struct mmap_event {
struct perf_event_header header;
__u32 pid, target_pid;
__u64 start;
__u64 len;
__u64 pgoff;
u32 pid, target_pid;
u64 start;
u64 len;
u64 pgoff;
char filename[PATH_MAX];
};

7
tools/perf/perf.h
View File

@ -19,6 +19,7 @@
#include <sys/syscall.h>
#include "../../include/linux/perf_counter.h"
#include "types.h"
/*
* prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
@ -65,4 +66,10 @@ sys_perf_counter_open(struct perf_counter_attr *attr,
#define MAX_COUNTERS 256
#define MAX_NR_CPUS 256
struct perf_file_header {
u64 version;
u64 sample_type;
u64 data_size;
};
#endif

17
tools/perf/types.h Normal file
View File

@ -0,0 +1,17 @@
#ifndef _PERF_TYPES_H
#define _PERF_TYPES_H
/*
* We define u64 as unsigned long long for every architecture
* so that we can print it with %Lx without getting warnings.
*/
typedef unsigned long long u64;
typedef signed long long s64;
typedef unsigned int u32;
typedef signed int s32;
typedef unsigned short u16;
typedef signed short s16;
typedef unsigned char u8;
typedef signed char s8;
#endif /* _PERF_TYPES_H */

17
tools/perf/util/ctype.c
View File

@ -11,16 +11,21 @@ enum {
D = GIT_DIGIT,
G = GIT_GLOB_SPECIAL, /* *, ?, [, \\ */
R = GIT_REGEX_SPECIAL, /* $, (, ), +, ., ^, {, | * */
P = GIT_PRINT_EXTRA, /* printable - alpha - digit - glob - regex */
PS = GIT_SPACE | GIT_PRINT_EXTRA,
};
unsigned char sane_ctype[256] = {
/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
0, 0, 0, 0, 0, 0, 0, 0, 0, S, S, 0, 0, S, 0, 0, /* 0.. 15 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 16.. 31 */
S, 0, 0, 0, R, 0, 0, 0, R, R, G, R, 0, 0, R, 0, /* 32.. 47 */
D, D, D, D, D, D, D, D, D, D, 0, 0, 0, 0, 0, G, /* 48.. 63 */
0, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 64.. 79 */
A, A, A, A, A, A, A, A, A, A, A, G, G, 0, R, 0, /* 80.. 95 */
0, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 96..111 */
A, A, A, A, A, A, A, A, A, A, A, R, R, 0, 0, 0, /* 112..127 */
PS,P, P, P, R, P, P, P, R, R, G, R, P, P, R, P, /* 32.. 47 */
D, D, D, D, D, D, D, D, D, D, P, P, P, P, P, G, /* 48.. 63 */
P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 64.. 79 */
A, A, A, A, A, A, A, A, A, A, A, G, G, P, R, P, /* 80.. 95 */
P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 96..111 */
A, A, A, A, A, A, A, A, A, A, A, R, R, P, P, 0, /* 112..127 */
/* Nothing in the 128.. range */
};

14
tools/perf/util/parse-events.c
View File

@ -13,8 +13,8 @@ int nr_counters;
struct perf_counter_attr attrs[MAX_COUNTERS];
struct event_symbol {
__u8 type;
__u64 config;
u8 type;
u64 config;
char *symbol;
};
@ -63,8 +63,8 @@ static char *hw_event_names[] = {
};
static char *sw_event_names[] = {
"cpu-clock-ticks",
"task-clock-ticks",
"cpu-clock-msecs",
"task-clock-msecs",
"page-faults",
"context-switches",
"CPU-migrations",
@ -96,7 +96,7 @@ static char *hw_cache_result [][MAX_ALIASES] = {
char *event_name(int counter)
{
__u64 config = attrs[counter].config;
u64 config = attrs[counter].config;
int type = attrs[counter].type;
static char buf[32];
@ -112,7 +112,7 @@ char *event_name(int counter)
return "unknown-hardware";
case PERF_TYPE_HW_CACHE: {
__u8 cache_type, cache_op, cache_result;
u8 cache_type, cache_op, cache_result;
static char name[100];
cache_type = (config >> 0) & 0xff;
@ -202,7 +202,7 @@ static int parse_generic_hw_symbols(const char *str, struct perf_counter_attr *a
*/
static int parse_event_symbols(const char *str, struct perf_counter_attr *attr)
{
__u64 config, id;
u64 config, id;
int type;
unsigned int i;
const char *sep, *pstr;

2
tools/perf/util/string.c
View File

@ -15,7 +15,7 @@ static int hex(char ch)
* While we find nice hex chars, build a long_val.
* Return number of chars processed.
*/
int hex2u64(const char *ptr, __u64 *long_val)
int hex2u64(const char *ptr, u64 *long_val)
{
const char *p = ptr;
*long_val = 0;

4
tools/perf/util/string.h
View File

@ -1,8 +1,8 @@
#ifndef _PERF_STRING_H_
#define _PERF_STRING_H_
#include <linux/types.h>
#include "../types.h"
int hex2u64(const char *ptr, __u64 *val);
int hex2u64(const char *ptr, u64 *val);
#endif

20
tools/perf/util/symbol.c
View File

@ -9,9 +9,9 @@
const char *sym_hist_filter;
static struct symbol *symbol__new(__u64 start, __u64 len,
static struct symbol *symbol__new(u64 start, u64 len,
const char *name, unsigned int priv_size,
__u64 obj_start, int verbose)
u64 obj_start, int verbose)
{
size_t namelen = strlen(name) + 1;
struct symbol *self = calloc(1, priv_size + sizeof(*self) + namelen);
@ -21,14 +21,14 @@ static struct symbol *symbol__new(__u64 start, __u64 len,
if (verbose >= 2)
printf("new symbol: %016Lx [%08lx]: %s, hist: %p, obj_start: %p\n",
(__u64)start, (unsigned long)len, name, self->hist, (void *)(unsigned long)obj_start);
(u64)start, (unsigned long)len, name, self->hist, (void *)(unsigned long)obj_start);
self->obj_start= obj_start;
self->hist = NULL;
self->hist_sum = 0;
if (sym_hist_filter && !strcmp(name, sym_hist_filter))
self->hist = calloc(sizeof(__u64), len);
self->hist = calloc(sizeof(u64), len);
if (priv_size) {
memset(self, 0, priv_size);
@ -89,7 +89,7 @@ static void dso__insert_symbol(struct dso *self, struct symbol *sym)
{
struct rb_node **p = &self->syms.rb_node;
struct rb_node *parent = NULL;
const __u64 ip = sym->start;
const u64 ip = sym->start;
struct symbol *s;
while (*p != NULL) {
@ -104,7 +104,7 @@ static void dso__insert_symbol(struct dso *self, struct symbol *sym)
rb_insert_color(&sym->rb_node, &self->syms);
}
struct symbol *dso__find_symbol(struct dso *self, __u64 ip)
struct symbol *dso__find_symbol(struct dso *self, u64 ip)
{
struct rb_node *n;
@ -151,7 +151,7 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
goto out_failure;
while (!feof(file)) {
__u64 start;
u64 start;
struct symbol *sym;
int line_len, len;
char symbol_type;
@ -232,7 +232,7 @@ static int dso__load_perf_map(struct dso *self, symbol_filter_t filter, int verb
goto out_failure;
while (!feof(file)) {
__u64 start, size;
u64 start, size;
struct symbol *sym;
int line_len, len;
@ -353,7 +353,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, Elf *elf,
{
uint32_t nr_rel_entries, idx;
GElf_Sym sym;
__u64 plt_offset;
u64 plt_offset;
GElf_Shdr shdr_plt;
struct symbol *f;
GElf_Shdr shdr_rel_plt;
@ -523,7 +523,7 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
elf_symtab__for_each_symbol(syms, nr_syms, index, sym) {
struct symbol *f;
__u64 obj_start;
u64 obj_start;
if (!elf_sym__is_function(&sym))
continue;

16
tools/perf/util/symbol.h
View File

@ -2,16 +2,18 @@
#define _PERF_SYMBOL_ 1
#include <linux/types.h>
#include "../types.h"
#include "list.h"
#include "rbtree.h"
struct symbol {
struct rb_node rb_node;
__u64 start;
__u64 end;
__u64 obj_start;
__u64 hist_sum;
__u64 *hist;
u64 start;
u64 end;
u64 obj_start;
u64 hist_sum;
u64 *hist;
void *priv;
char name[0];
};
@ -19,7 +21,7 @@ struct dso {
struct list_head node;
struct rb_root syms;
unsigned int sym_priv_size;
struct symbol *(*find_symbol)(struct dso *, __u64 ip);
struct symbol *(*find_symbol)(struct dso *, u64 ip);
char name[0];
};
@ -35,7 +37,7 @@ static inline void *dso__sym_priv(struct dso *self, struct symbol *sym)
return ((void *)sym) - self->sym_priv_size;
}
struct symbol *dso__find_symbol(struct dso *self, __u64 ip);
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dso__load_kernel(struct dso *self, const char *vmlinux,
symbol_filter_t filter, int verbose);

18
tools/perf/util/util.h
View File

@ -100,11 +100,6 @@
#include <iconv.h>
#endif
#ifndef NO_OPENSSL
#include <openssl/ssl.h>
#include <openssl/err.h>
#endif
/* On most systems <limits.h> would have given us this, but
* not on some systems (e.g. GNU/Hurd).
*/
@ -332,17 +327,20 @@ static inline int has_extension(const char *filename, const char *ext)
#undef tolower
#undef toupper
extern unsigned char sane_ctype[256];
#define GIT_SPACE 0x01
#define GIT_DIGIT 0x02
#define GIT_ALPHA 0x04
#define GIT_GLOB_SPECIAL 0x08
#define GIT_REGEX_SPECIAL 0x10
#define GIT_SPACE 0x01
#define GIT_DIGIT 0x02
#define GIT_ALPHA 0x04
#define GIT_GLOB_SPECIAL 0x08
#define GIT_REGEX_SPECIAL 0x10
#define GIT_PRINT_EXTRA 0x20
#define GIT_PRINT 0x3E
#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
#define isascii(x) (((x) & ~0x7f) == 0)
#define isspace(x) sane_istest(x,GIT_SPACE)
#define isdigit(x) sane_istest(x,GIT_DIGIT)
#define isalpha(x) sane_istest(x,GIT_ALPHA)
#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
#define isprint(x) sane_istest(x,GIT_PRINT)
#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
#define tolower(x) sane_case((unsigned char)(x), 0x20)