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xen/trace: add tlb flush tracepoints 

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge 2010-12-20 13:15:04 -08:00
parent ab78f7ad2c
commit c8eed1719a
2 changed files with 56 additions and 0 deletions
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8
arch/x86/xen/mmu.c
View File

@ -1222,6 +1222,8 @@ static void xen_flush_tlb(void)
struct mmuext_op *op;
struct multicall_space mcs;
trace_xen_mmu_flush_tlb(0);
preempt_disable();
mcs = xen_mc_entry(sizeof(*op));
@ -1240,6 +1242,8 @@ static void xen_flush_tlb_single(unsigned long addr)
struct mmuext_op *op;
struct multicall_space mcs;
trace_xen_mmu_flush_tlb_single(addr);
preempt_disable();
mcs = xen_mc_entry(sizeof(*op));
@ -1266,6 +1270,8 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
} *args;
struct multicall_space mcs;
trace_xen_mmu_flush_tlb_others(cpus, mm, va);
if (cpumask_empty(cpus))
return; /* nothing to do */
@ -1305,6 +1311,8 @@ static void __xen_write_cr3(bool kernel, unsigned long cr3)
struct multicall_space mcs;
unsigned long mfn;
trace_xen_mmu_write_cr3(kernel, cr3);
if (cr3)
mfn = pfn_to_mfn(PFN_DOWN(cr3));
else

48
include/trace/events/xen.h
View File

@ -405,6 +405,54 @@ TRACE_EVENT(xen_mmu_pgd_unpin,
TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd)
);
TRACE_EVENT(xen_mmu_flush_tlb,
TP_PROTO(int x),
TP_ARGS(x),
TP_STRUCT__entry(__array(char, x, 0)),
TP_fast_assign((void)x),
TP_printk("%s", "")
);
TRACE_EVENT(xen_mmu_flush_tlb_single,
TP_PROTO(unsigned long addr),
TP_ARGS(addr),
TP_STRUCT__entry(
__field(unsigned long, addr)
),
TP_fast_assign(__entry->addr = addr),
TP_printk("addr %lx", __entry->addr)
);
TRACE_EVENT(xen_mmu_flush_tlb_others,
TP_PROTO(const struct cpumask *cpus, struct mm_struct *mm,
unsigned long addr),
TP_ARGS(cpus, mm, addr),
TP_STRUCT__entry(
__field(unsigned, ncpus)
__field(struct mm_struct *, mm)
__field(unsigned long, addr)
),
TP_fast_assign(__entry->ncpus = cpumask_weight(cpus);
__entry->mm = mm;
__entry->addr = addr),
TP_printk("ncpus %d mm %p addr %lx",
__entry->ncpus, __entry->mm, __entry->addr)
);
TRACE_EVENT(xen_mmu_write_cr3,
TP_PROTO(bool kernel, unsigned long cr3),
TP_ARGS(kernel, cr3),
TP_STRUCT__entry(
__field(bool, kernel)
__field(unsigned long, cr3)
),
TP_fast_assign(__entry->kernel = kernel;
__entry->cr3 = cr3),
TP_printk("%s cr3 %lx",
__entry->kernel ? "kernel" : "user", __entry->cr3)
);
/* CPU */
TRACE_EVENT(xen_cpu_write_ldt_entry,
TP_PROTO(struct desc_struct *dt, int entrynum, u64 desc),