Commit Graph

7844 Commits

Author SHA1 Message Date
Linus Torvalds 3ab6d1ebd5 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Two core subsystem fixes, plus a handful of tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix race in swevent hash
  perf: Fix race in perf_event_exec()
  perf list: Robustify event printing routine
  perf list: Add support for PERF_COUNT_SW_BPF_OUT
  perf hists browser: Fix segfault if use symbol filter in cmdline
  perf hists browser: Reset selection when refresh
  perf hists browser: Add NULL pointer check to prevent crash
  perf buildid-list: Fix return value of perf buildid-list -k
  perf buildid-list: Show running kernel build id fix
2016-01-08 13:52:59 -08:00
Arnaldo Carvalho de Melo fb202539e6 perf list: Robustify event printing routine
When a43eec3042 ("bpf: introduce bpf_perf_event_output() helper") added
PERF_COUNT_SW_BPF_OUTPUT we ended up with a new entry in the event_symbols_sw
array that wasn't initialized, thus set to NULL, fix print_symbol_events()
to check for that case so that we don't crash if this happens again.

  (gdb) bt
  #0  __match_glob (ignore_space=false, pat=<optimized out>, str=<optimized out>) at util/string.c:198
  #1  strglobmatch (str=<optimized out>, pat=pat@entry=0x7fffffffe61d "stall") at util/string.c:252
  #2  0x00000000004993a5 in print_symbol_events (type=1, syms=0x872880 <event_symbols_sw+160>, max=11, name_only=false, event_glob=0x7fffffffe61d "stall")
      at util/parse-events.c:1615
  #3  print_events (event_glob=event_glob@entry=0x7fffffffe61d "stall", name_only=false) at util/parse-events.c:1675
  #4  0x000000000042c79e in cmd_list (argc=1, argv=0x7fffffffe390, prefix=<optimized out>) at builtin-list.c:68
  #5  0x00000000004788a5 in run_builtin (p=p@entry=0x871758 <commands+120>, argc=argc@entry=2, argv=argv@entry=0x7fffffffe390) at perf.c:370
  #6  0x0000000000420ab0 in handle_internal_command (argv=0x7fffffffe390, argc=2) at perf.c:429
  #7  run_argv (argv=0x7fffffffe110, argcp=0x7fffffffe11c) at perf.c:473
  #8  main (argc=2, argv=0x7fffffffe390) at perf.c:588
  (gdb) p event_symbols_sw[PERF_COUNT_SW_BPF_OUTPUT]
  $4 = {symbol = 0x0, alias = 0x0}
  (gdb)

A patch to robustify perf to not segfault when the next counter gets added in
the kernel will follow this one.

Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-57wysblcjfrseb0zg5u7ek10@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-16 16:43:10 -03:00
Arnaldo Carvalho de Melo d643b5aba8 perf list: Add support for PERF_COUNT_SW_BPF_OUT
When PERF_COUNT_SW_BPF_OUTPUT was added to the kernel we should've
added it to tools/perf, where it is used just to list events.

This ended up causing a segfault in commands like "perf list stall".

Fix it by adding that new software counter.

A patch to robustify perf to not segfault when the next counter gets
added in the kernel will follow this one.

Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-uya354upi3eprsey6mi5962d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-16 16:43:10 -03:00
Michael S. Tsirkin 55564a02b2 tools/virtio: fix byteswap logic
commit cf561f0d2e ("virtio: introduce
virtio_is_little_endian() helper") changed byteswap logic to
skip feature bit checks for LE platforms, but didn't
update tools/virtio, so vring_bench started failing.

Update the copy under tools/virtio/ (TODO: find a way to avoid this code
duplication).

Cc: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-12-07 17:28:10 +02:00
Michael S. Tsirkin 40c172e5d9 tools/virtio: move list macro stubs
Makes them more generally available.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-12-07 17:28:09 +02:00
Wang Nan 4938cf0c7a perf hists browser: Fix segfault if use symbol filter in cmdline
If feed perf a symbol filter in cmdline and the result is empty,
pressing 'Enter' in the hist browser causes crash:

 # ./perf report perf.data   <-- Common mistake for beginners

Then press 'Enter':

 perf: Segmentation fault
 -------- backtrace --------
 /home/wangnan/perf[0x53e578]
 /lib64/libc.so.6(+0x3545f)[0x7f76bafe045f]
 /home/wangnan/perf[0x539dd4]
 /home/wangnan/perf(perf_evlist__tui_browse_hists+0x96)[0x53d216]
 /home/wangnan/perf(cmd_report+0x1b9f)[0x442c7f]
 /home/wangnan/perf[0x47efa2]
 /home/wangnan/perf(main+0x5f5)[0x432fa5]
 /lib64/libc.so.6(__libc_start_main+0xf4)[0x7f76bafccbd4]
 /home/wangnan/perf[0x4330d4]

This is because 'perf.data' is interpreted as a symbol filter, and the
result is empty, so selection is empty. However,
hist_browser__toggle_fold() forgets to check it.

This patch simply return false when selection is NULL.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1449455746-41952-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-07 12:02:35 -03:00
Wang Nan 979d2cac11 perf hists browser: Reset selection when refresh
With the following steps:

 Step 1: perf report

 Step 2: Use UP/DOWN to select an entry, don't press 'ENTER'

 Step 3: Use '/' to filter symbols, use a filter which returns
         empty result

 Step 4: Press 'ENTER'

We see that, even if we have filtered all the symbols (and the main
interface is empty), pressing 'ENTER' still selects one symbol. This
behavior surprises the user.

This patch resets browser->{he_,}selection in hist_browser__refresh()
and lets it choose default selection. In this case
browser->{he_,}selection keeps NULL so user won't see annotation item in
menu.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1449455746-41952-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-07 12:02:12 -03:00
Wang Nan 837eeb7569 perf hists browser: Add NULL pointer check to prevent crash
Before this patch we can trigger a segfault by following steps:

 Step 0: Use 'perf record' to generate a perf.data without callchain

 Step 1: perf report

 Step 2: Use UP/DOWN to select an entry, don't press 'ENTER'

 Step 3: Use '/' to filter symbols, use a filter which returns
         empty result

 Step 4: Press 'ENTER' (notice here that the old selection is still
		        there. This is another problem)

 Step 5: Press 'ENTER' to annotate that symbol

 Step 6: Press 'LEFT' to go out.

 Result: segfault:

 perf: Segmentation fault
 -------- backtrace --------
 /home/wangnan/perf[0x53e568]
 /lib64/libc.so.6(+0x3545f)[0x7fba75d3245f]
 /home/wangnan/perf[0x537516]
 /home/wangnan/perf[0x533fef]
 /home/wangnan/perf[0x53b347]
 /home/wangnan/perf(perf_evlist__tui_browse_hists+0x96)[0x53d206]
 /home/wangnan/perf(cmd_report+0x1b9f)[0x442c7f]
 /home/wangnan/perf[0x47efa2]
 /home/wangnan/perf(main+0x5f5)[0x432fa5]
 /lib64/libc.so.6(__libc_start_main+0xf4)[0x7fba75d1ebd4]
 /home/wangnan/perf[0x4330d4]

This is because in this case 'nd' could be NULL in
ui_browser__hists_seek(), but that function never checks it.

This patch adds checker for potential NULL pointer in that function.
After this patch the above steps won't segfault.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1449455746-41952-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-07 12:02:11 -03:00
Michael Petlan c8319c9d0d perf buildid-list: Fix return value of perf buildid-list -k
The buildid string length is returned by perf buildid-list -k command.
Since a non-zero return value means an error, perf buildid-list -k cmd
should return 0 when successful instead.

Before:

	# perf buildid-list -k
	39356d74e96e02346fe0ec1f3f162b6c522bac62
	# echo $?
	41

After:

	# perf buildid-list -k
	39356d74e96e02346fe0ec1f3f162b6c522bac62
	# echo $?
	0

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Fixes: 0b5a7935f3 ("perf buildid: Introduce sysfs/filename__sprintf_build_id")
LPU-Reference: 1449080871.24573.145.camel@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-07 12:02:10 -03:00
Michael Petlan 7375e151bb perf buildid-list: Show running kernel build id fix
The --kernel option of perf buildid-list tool should show the running
kernel buildid.  The functionality has been lost during other changes of
the related code.

The build_id__sprintf() function should return length of the build-id
string,  but it was the length of the build-id raw data instead. Due to
that, some return value checking caused that the final string was not
printed out.

With this patch the build_id__sprintf() returns the correct value, so
the --kernel option works again.

Before:

	# perf buildid-list --kernel
	#

After:

	# perf buildid-list --kernel
	972c1edab5bdc06cc224af45d510af662a3c6972
	#

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
LPU-Reference: 1448632089.24573.114.camel@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-07 12:02:10 -03:00
Linda Knippers 6b577c9d77 nfit: Adjust for different _FIT and NFIT headers
When support for _FIT was added, the code presumed that the data
returned by the _FIT method is identical to the NFIT table, which
starts with an acpi_table_header.  However, the _FIT is defined
to return a data in the format of a series of NFIT type structure
entries and as a method, has an acpi_object header rather tahn
an acpi_table_header.

To address the differences, explicitly save the acpi_table_header
from the NFIT, since it is accessible through /sys, and change
the nfit pointer in the acpi_desc structure to point to the
table entries rather than the headers.

Reported-by: Jeff Moyer (jmoyer@redhat.com>
Signed-off-by: Linda Knippers <linda.knippers@hpe.com>
Acked-by: Vishal Verma <vishal.l.verma@intel.com>
[vishal: fix up unit test for new header assumptions]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-11-30 14:51:46 -08:00
Linus Torvalds a2931547ee linux-kselftest-4.4-rc3
This update consists of one minor documentation fix and a fix
 to an existing test.
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Merge tag 'linux-kselftest-4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This update consists of one minor documentation fix and a fix to an
  existing test"

* tag 'linux-kselftest-4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/seccomp: Get page size from sysconf
  tools:testing/selftests: fix typo in futex/README
2015-11-23 13:19:27 -08:00
Linus Torvalds 727cde6c3a Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf tool fixes from Thomas Gleixner:
 "A couple of fixes for perf tools:

   - Build system updates

   - Plug a memory leak in an error path of perf probe

   - Tear down probes correctly when adding fails

   - Fixes to the perf symbol handling

   - Fix ordering of event processing in buildid-list

   - Fix per DSO filtering in the histogram browser"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf probe: Clear probe_trace_event when add_probe_trace_event() fails
  perf probe: Fix memory leaking on failure by clearing all probe_trace_events
  perf inject: Also re-pipe lost_samples event
  perf buildid-list: Requires ordered events
  perf symbols: Fix dso lookup by long name and missing buildids
  perf symbols: Allow forcing reading of non-root owned files by root
  perf hists browser: The dso can be obtained from popup_action->ms.map->dso
  perf hists browser: Fix 'd' hotkey action to filter by DSO
  perf symbols: Rebuild rbtree when adjusting symbols for kcore
  tools: Add a "make all" rule
  tools: Actually install tmon in the install rule
2015-11-22 12:37:20 -08:00
Naoya Horiguchi 429d48622c tools/vm/page-types.c: support KPF_IDLE
PageIdle is exported in include/uapi/linux/kernel-page-flags.h, so let's
make page-types.c tool handle it.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-20 16:17:32 -08:00
Linus Torvalds 400f3f255d More power management and ACPI updates for v4.4-rc2
- Revert three recent intel_pstate driver commits one of which
    introduced a regression and the remaining two depend on the
    problematic one (Rafael Wysocki).
 
  - Fix breakage related to the recently introduced ACPI _CCA object
    support in the PCI DMA setup code (Suravee Suthikulpanit).
 
  - Fix up the recently introduced ACPI CPPC support to only
    use the hardware-reduced version of the PCCT structure as
    the only architecture to support it (ARM64) will only use
    hardware-reduced ACPI anyway (Ashwin Chaugule).
 
  - Fix a cpufreq mediatek driver build problem (Arnd Bergmann).
 
  - Fix the SMBus transaction handling implementation in the ACPI
    core to avoid re-entrant calls to wait_event_timeout() which
    makes intermittent boot stalls related to the Smart Battery
    Subsystem initialization go away and revert a workaround of
    another problem with the same underlying root cause (Chris
    Bainbridge).
 
  - Fix the generic wakeup interrupts framework to avoid using
    invalid IRQ numbers (Dmitry Torokhov).
 
  - Remove a redundant check from the ACPI EC driver (Markus Elfring).
 
  - Modify the intel_pstate driver so it can support more Atom flavors
    than just one (Baytrail) and add support for Atom Airmont cores
    (which require new freqnency tables) to it (Philippe Longepe).
 
  - Clean up MSR-related symbols in turbostat (Len Brown).
 
 /
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Merge tag 'pm+acpi-4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management and ACPI updates from Rafael Wysocki:
 "These are mostly fixes and cleanups (ACPI core, PM core, cpufreq, ACPI
  EC driver, device properties) including three reverts of recent
  intel_pstate driver commits due to a regression introduced by one of
  them plus support for Atom Airmont cores in intel_pstate (which really
  boils down to adding new frequency tables for Airmont) and additional
  turbostat updates.

  Specifics:

   - Revert three recent intel_pstate driver commits one of which
     introduced a regression and the remaining two depend on the
     problematic one (Rafael Wysocki).

   - Fix breakage related to the recently introduced ACPI _CCA object
     support in the PCI DMA setup code (Suravee Suthikulpanit).

   - Fix up the recently introduced ACPI CPPC support to only use the
     hardware-reduced version of the PCCT structure as the only
     architecture to support it (ARM64) will only use hardware-reduced
     ACPI anyway (Ashwin Chaugule).

   - Fix a cpufreq mediatek driver build problem (Arnd Bergmann).

   - Fix the SMBus transaction handling implementation in the ACPI core
     to avoid re-entrant calls to wait_event_timeout() which makes
     intermittent boot stalls related to the Smart Battery Subsystem
     initialization go away and revert a workaround of another problem
     with the same underlying root cause (Chris Bainbridge).

   - Fix the generic wakeup interrupts framework to avoid using invalid
     IRQ numbers (Dmitry Torokhov).

   - Remove a redundant check from the ACPI EC driver (Markus Elfring).

   - Modify the intel_pstate driver so it can support more Atom flavors
     than just one (Baytrail) and add support for Atom Airmont cores
     (which require new freqnency tables) to it (Philippe Longepe).

   - Clean up MSR-related symbols in turbostat (Len Brown)"

* tag 'pm+acpi-4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI: Fix OF logic in pci_dma_configure()
  Revert "Documentation: kernel_parameters for Intel P state driver"
  cpufreq: mediatek: fix build error
  cpufreq: intel_pstate: Add separate support for Airmont cores
  cpufreq: intel_pstate: Replace BYT with ATOM
  Revert "cpufreq: intel_pstate: Use ACPI perf configuration"
  Revert "cpufreq: intel_pstate: Avoid calculation for max/min"
  ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query()
  Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"
  ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code
  PM / wakeirq: check that wake IRQ is valid before accepting it
  ACPI / CPPC: Use h/w reduced version of the PCCT structure
  x86: remove unused definition of MSR_NHM_PLATFORM_INFO
  tools/power turbostat: use new name for MSR_PLATFORM_INFO
2015-11-20 09:01:07 -08:00
Bamvor Jian Zhang 2ce47b44b2 selftests/seccomp: Get page size from sysconf
The commit fd88d16c58 ("selftests/seccomp: Be more precise with
syscall arguments.") use PAGE_SIZE directly which lead to build
failure on arm64.

Replace it with generic interface(sysconf(_SC_PAGESIZE)) to fix this
failure.

Build and test successful on x86_64 and arm64.

Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
Acked-by: Kees Cook <keescook@chromium.org>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-11-18 16:56:53 -07:00
Linus Torvalds 7f151f1d8a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix list tests in netfilter ingress support, from Florian Westphal.

 2) Fix reversal of input and output interfaces in ingress hook
    invocation, from Pablo Neira Ayuso.

 3) We have a use after free in r8169, caught by Dave Jones, fixed by
    Francois Romieu.

 4) Splice use-after-free fix in AF_UNIX frmo Hannes Frederic Sowa.

 5) Three ipv6 route handling bug fixes from Martin KaFai Lau:
    a) Don't create clone routes not managed by the fib6 tree
    b) Don't forget to check expiration of DST_NOCACHE routes.
    c) Handle rt->dst.from == NULL properly.

 6) Several AF_PACKET fixes wrt transport header setting and SKB
    protocol setting, from Daniel Borkmann.

 7) Fix thunder driver crash on shutdown, from Pavel Fedin.

 8) Several Mellanox driver fixes (max MTU calculations, use of correct
    DMA unmap in TX path, etc.) from Saeed Mahameed, Tariq Toukan, Doron
    Tsur, Achiad Shochat, Eran Ben Elisha, and Noa Osherovich.

 9) Several mv88e6060 DSA driver fixes (wrong bit definitions for
    certain registers, etc.) from Neil Armstrong.

10) Make sure to disable preemption while updating per-cpu stats of ip
    tunnels, from Jason A.  Donenfeld.

11) Various ARM64 bpf JIT fixes, from Yang Shi.

12) Flush icache properly in ARM JITs, from Daniel Borkmann.

13) Fix masking of RX and TX interrupts in ravb driver, from Masaru
    Nagai.

14) Fix netdev feature propagation for devices not implementing
    ->ndo_set_features().  From Nikolay Aleksandrov.

15) Big endian fix in vmxnet3 driver, from Shrikrishna Khare.

16) RAW socket code increments incorrect SNMP counters, fix from Ben
    Cartwright-Cox.

17) IPv6 multicast SNMP counters are bumped twice, fix from Neil Horman.

18) Fix handling of VLAN headers on stacked devices when REORDER is
    disabled.  From Vlad Yasevich.

19) Fix SKB leaks and use-after-free in ipvlan and macvlan drivers, from
    Sabrina Dubroca.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits)
  MAINTAINERS: Update Mellanox's Eth NIC driver entries
  net/core: revert "net: fix __netdev_update_features return.." and add comment
  af_unix: take receive queue lock while appending new skb
  rtnetlink: fix frame size warning in rtnl_fill_ifinfo
  net: use skb_clone to avoid alloc_pages failure.
  packet: Use PAGE_ALIGNED macro
  packet: Don't check frames_per_block against negative values
  net: phy: Use interrupts when available in NOLINK state
  phy: marvell: Add support for 88E1540 PHY
  arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS
  macvlan: fix leak in macvlan_handle_frame
  ipvlan: fix use after free of skb
  ipvlan: fix leak in ipvlan_rcv_frame
  vlan: Do not put vlan headers back on bridge and macvlan ports
  vlan: Fix untag operations of stacked vlans with REORDER_HEADER off
  via-velocity: unconditionally drop frames with bad l2 length
  ipg: Remove ipg driver
  dl2k: Add support for IP1000A-based cards
  snmp: Remove duplicate OUTMCAST stat increment
  net: thunder: Check for driver data in nicvf_remove()
  ...
2015-11-17 13:52:59 -08:00
Wei Jiangang 9e5b8a6e53 tools:testing/selftests: fix typo in futex/README
Correct typo in tools/testing/selftests/futex/README.

Signed-off-by: Wei Jiangang <weijg.fnst@cn.fujitsu.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-11-16 19:22:49 -07:00
Rafael J. Wysocki d9f67dbc0f Merge branch 'pm-tools'
* pm-tools:
  x86: remove unused definition of MSR_NHM_PLATFORM_INFO
  tools/power turbostat: use new name for MSR_PLATFORM_INFO
2015-11-16 22:57:02 +01:00
Kamal Mostafa d7475de585 tools/net: Use include/uapi with __EXPORTED_HEADERS__
Use the local uapi headers to keep in sync with "recently" added #define's
(e.g. SKF_AD_VLAN_TPID).  Refactored CFLAGS, and bpf_asm doesn't need -I.

Fixes: 3f356385e8 ("filter: bpf_asm: add minimal bpf asm tool")
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-15 17:24:33 -05:00
Linus Torvalds 0ca9b67606 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner:
 "Mostly updates to the perf tool plus two fixes to the kernel core code:

   - Handle tracepoint filters correctly for inherited events (Peter
     Zijlstra)

   - Prevent a deadlock in perf_lock_task_context (Paul McKenney)

   - Add missing newlines to some pr_err() calls (Arnaldo Carvalho de
     Melo)

   - Print full source file paths when using 'perf annotate --print-line
     --full-paths' (Michael Petlan)

   - Fix 'perf probe -d' when just one out of uprobes and kprobes is
     enabled (Wang Nan)

   - Add compiler.h to list.h to fix 'make perf-tar-src-pkg' generated
     tarballs, i.e. out of tree building (Arnaldo Carvalho de Melo)

   - Add the llvm-src-base.c and llvm-src-kbuild.c files, generated by
     the 'perf test' LLVM entries, when running it in-tree, to
     .gitignore (Yunlong Song)

   - libbpf error reporting improvements, using a strerror interface to
     more precisely tell the user about problems with the provided
     scriptlet, be it in C or as a ready made object file (Wang Nan)

   - Do not be case sensitive when searching for matching 'perf test'
     entries (Arnaldo Carvalho de Melo)

   - Inform the user about objdump failures in 'perf annotate' (Andi
     Kleen)

   - Improve the LLVM 'perf test' entry, introduce a new ones for BPF
     and kbuild tests to check the environment used by clang to compile
     .c scriptlets (Wang Nan)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  perf/x86/intel/rapl: Remove the unused RAPL_EVENT_DESC() macro
  tools include: Add compiler.h to list.h
  perf probe: Verify parameters in two functions
  perf session: Add missing newlines to some pr_err() calls
  perf annotate: Support full source file paths for srcline fix
  perf test: Add llvm-src-base.c and llvm-src-kbuild.c to .gitignore
  perf: Fix inherited events vs. tracepoint filters
  perf: Disable IRQs across RCU RS CS that acquires scheduler lock
  perf test: Do not be case sensitive when searching for matching tests
  perf test: Add 'perf test BPF'
  perf test: Enhance the LLVM tests: add kbuild test
  perf test: Enhance the LLVM test: update basic BPF test program
  perf bpf: Improve BPF related error messages
  perf tools: Make fetch_kernel_version() publicly available
  bpf tools: Add new API bpf_object__get_kversion()
  bpf tools: Improve libbpf error reporting
  perf probe: Cleanup find_perf_probe_point_from_map to reduce redundancy
  perf annotate: Inform the user about objdump failures in --stdio
  perf stat: Make stat options global
  perf sched latency: Fix thread pid reuse issue
  ...
2015-11-15 09:36:24 -08:00
Linus Torvalds 8f98e292eb Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull liblockdep fixes from Thomas Gleixner:
 "Three small patches to synchronize liblockdep with the latest core
  changes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/liblockdep: explicitly declare lockdep API we call from liblockdep
  tools/liblockdep: add userspace versions of WRITE_ONCE and RCU_INIT_POINTER
  tools/liblockdep: remove task argument from debug_check_no_locks_held
2015-11-15 09:34:32 -08:00
Linus Torvalds 2870f6c4d1 Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:

 - three fixes tagged for -stable including a crash fix, simple
   performance tweak, and an invalid i/o error.

 - build regression fix for the nvdimm unit tests

 - nvdimm documentation update

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  dax: fix __dax_pmd_fault crash
  libnvdimm: documentation clarifications
  libnvdimm, pmem: fix size trim in pmem_direct_access()
  libnvdimm, e820: fix numa node for e820-type-12 pmem ranges
  tools/testing/nvdimm, acpica: fix flag rename build breakage
2015-11-13 17:35:48 -08:00
Len Brown ec0adc539b tools/power turbostat: use new name for MSR_PLATFORM_INFO
MSR_PLATFORM_INFO is the new name for MSR_NHM_PLATFORM_INFO

no functional change

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-13 23:27:13 +01:00
Wang Nan 092b1f0b5f perf probe: Clear probe_trace_event when add_probe_trace_event() fails
When probing with a glob, errors in add_probe_trace_event() won't be
passed to debuginfo__find_trace_events() because it would be modified by
probe_point_search_cb(). It causes a segfault if perf fails to find an
argument for a probe point matched by the glob. For example:

  # ./perf probe -v -n 'SyS_dup? oldfd'
  probe-definition(0): SyS_dup? oldfd
  symbol:SyS_dup? file:(null) line:0 offset:0 return:0 lazy:(null)
  parsing arg: oldfd into oldfd
  1 arguments
  Looking at the vmlinux_path (7 entries long)
  Using /lib/modules/4.3.0-rc4+/build/vmlinux for symbols
  Open Debuginfo file: /lib/modules/4.3.0-rc4+/build/vmlinux
  Try to find probe point from debuginfo.
  Matched function: SyS_dup3
  found inline addr: 0xffffffff812095c0
  Probe point found: SyS_dup3+0
  Searching 'oldfd' variable in context.
  Converting variable oldfd into trace event.
  oldfd type is long int.
  found inline addr: 0xffffffff812096d4
  Probe point found: SyS_dup2+36
  Searching 'oldfd' variable in context.
  Failed to find 'oldfd' in this function.
  Matched function: SyS_dup3
  Probe point found: SyS_dup3+0
  Searching 'oldfd' variable in context.
  Converting variable oldfd into trace event.
  oldfd type is long int.
  Matched function: SyS_dup2
  Probe point found: SyS_dup2+0
  Searching 'oldfd' variable in context.
  Converting variable oldfd into trace event.
  oldfd type is long int.
  Found 4 probe_trace_events.
  Opening /sys/kernel/debug/tracing//kprobe_events write=1
  Writing event: p:probe/SyS_dup3 _text+2135488 oldfd=%di:s64
  Segmentation fault (core dumped)
  #

This patch ensures that add_probe_trace_event() doesn't touches
tf->ntevs and tf->tevs if those functions fail.

After the patch:

  # perf probe  'SyS_dup? oldfd'
  Failed to find 'oldfd' in this function.
  Added new events:
    probe:SyS_dup3       (on SyS_dup? with oldfd)
    probe:SyS_dup3_1     (on SyS_dup? with oldfd)
    probe:SyS_dup2       (on SyS_dup? with oldfd)

  You can now use it in all perf tools, such as:

	perf record -e probe:SyS_dup2 -aR sleep 1

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1447417761-156094-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-13 12:28:09 -03:00
Masami Hiramatsu 0196e787ce perf probe: Fix memory leaking on failure by clearing all probe_trace_events
Fix memory leaking on the debuginfo__find_trace_events() failure path
which frees an array of probe_trace_events but doesn't clears all the
allocated sub-structures and strings.

So, before doing zfree(tevs), clear all the array elements which may
have allocated resources.

Reported-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1447417761-156094-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-13 12:24:32 -03:00
Adrian Hunter d8145b3e30 perf inject: Also re-pipe lost_samples event
perf inject must re-pipe all events otherwise they get dropped from the
output file.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1447408112-1920-4-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-13 12:23:12 -03:00
Adrian Hunter 1216b65c50 perf buildid-list: Requires ordered events
'perf buildid-list' processes events to determine hits (i.e. with-hits
option).  That may not work if events are not sorted in order. i.e. MMAP
events must be processed before the samples that depend on them so that
sample processing can 'hit' the DSO to which the MMAP refers.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1447408112-1920-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-13 12:22:04 -03:00
Adrian Hunter e266a753bf perf symbols: Fix dso lookup by long name and missing buildids
Commit 4598a0a6d2 ("perf symbols: Improve DSO long names lookup speed
with rbtree") Added a tree to lookup dsos by long name.  That tree gets
corrupted whenever a dso long name is changed because the tree is not
updated.

One effect of that is buildid-list does not work with the 'with-hits'
option because dso lookup fails and results in two structs for the same
dso.  The first has the buildid but no hits, the second has hits but no
buildid. e.g.

Before:

  $ tools/perf/perf record ls
  arch     certs    CREDITS  Documentation  firmware  include
  ipc      Kconfig  lib      Makefile       net       REPORTING-BUGS
  scripts  sound    usr      block          COPYING   crypto
  drivers  fs       init     Kbuild         kernel    MAINTAINERS
  mm       README   samples  security       tools     virt
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.012 MB perf.data (11 samples) ]
  $ tools/perf/perf buildid-list
  574da826c66538a8d9060d393a8866289bd06005 [kernel.kallsyms]
  30c94dc66a1fe95180c3d68d2b89e576d5ae213c /lib/x86_64-linux-gnu/libc-2.19.so
  $ tools/perf/perf buildid-list -H
  574da826c66538a8d9060d393a8866289bd06005 [kernel.kallsyms]
  0000000000000000000000000000000000000000 /lib/x86_64-linux-gnu/libc-2.19.so

After:

  $ tools/perf/perf buildid-list -H
  574da826c66538a8d9060d393a8866289bd06005 [kernel.kallsyms]
  30c94dc66a1fe95180c3d68d2b89e576d5ae213c /lib/x86_64-linux-gnu/libc-2.19.so

The fix is to record the root of the tree on the dso so that
dso__set_long_name() can update the tree when the long name changes.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Douglas Hatch <doug.hatch@hp.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Waiman Long <Waiman.Long@hp.com>
Fixes: 4598a0a6d2 ("perf symbols: Improve DSO long names lookup speed with rbtree")
Link: http://lkml.kernel.org/r/1447408112-1920-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-13 11:14:36 -03:00
Arnaldo Carvalho de Melo 2059fc7a5a perf symbols: Allow forcing reading of non-root owned files by root
When the root user tries to read a file owned by some other user we get:

  # ls -la perf.data
  -rw-------. 1 acme acme 20032 Nov 12 15:50 perf.data
  # perf report
  File perf.data not owned by current user or root (use -f to override)
  # perf report -f | grep -v ^# | head -2
    30.96%  ls       [kernel.vmlinux]  [k] do_set_pte
    28.24%  ls       libc-2.20.so      [.] intel_check_word
  #

That wasn't happening when the symbol code tried to read a JIT map,
where the same check was done but no forcing was possible, fix it.

Reported-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Tested-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://permalink.gmane.org/gmane.linux.kernel.perf.user/2380
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-12 18:58:18 -03:00
Arnaldo Carvalho de Melo b7f294b58a perf hists browser: The dso can be obtained from popup_action->ms.map->dso
So no need to have a 'dso' member in 'popup_action', remove it as no
code is using it, already.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-76a6s0007slug0op0wkl6o8b@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-12 18:58:18 -03:00
Arnaldo Carvalho de Melo fae00650f7 perf hists browser: Fix 'd' hotkey action to filter by DSO
When pressing 'd' the expected action is to filter all entries by the
DSO in the current entry, but for that the action->map needs to be set,
and only action->dso was being set, fix it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 045b80dd03 ("perf hists browser: Use the map to determine if a DSO is being used as a kernel")
Link: http://lkml.kernel.org/n/tip-xqhfzgoblq49lk5h5u82atro@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-12 18:58:17 -03:00
Adrian Hunter 866548dd6e perf symbols: Rebuild rbtree when adjusting symbols for kcore
Normally symbols are read from the DSO and adjusted, if need be, so that
the symbol start matches the file offset in the DSO file (we want the
file offset because that is what we know from MMAP events). That is done
by dso__load_sym() which inserts the symbols *after* adjusting them.

In the case of kcore, the symbols have been read from kallsyms and the
symbol start is the memory address. The symbols have to be adjusted to
match the kcore file offsets. dso__split_kallsyms_for_kcore() does that,
but now the adjustment is being done *after* the symbols have been
inserted. It appears dso__split_kallsyms_for_kcore() was assuming that
changing the symbol start would not change the order in the rbtree -
which is, of course, not guaranteed.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/563CB241.2090701@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-12 18:58:17 -03:00
Kamal Mostafa f6ba98c5dc tools: Add a "make all" rule
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Pali Rohar <pali.rohar@gmail.com>
Cc: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Link: http://lkml.kernel.org/r/1447280736-2161-2-git-send-email-kamal@canonical.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-12 18:58:10 -03:00
Linus Torvalds be23c9d20b More power management and ACPI updates for v4.4-rc1
- Support for the ACPI _CCA configuration object intended to tell
    the OS whether or not a bus master device supports hardware
    managed cache coherency and a new set of functions to allow
    drivers to check the cache coherency support for devices in a
    platform firmware interface agnostic way (Suravee Suthikulpanit,
    Jeremy Linton).
 
  - ACPI backlight quirks for ESPRIMO Mobile M9410 and Dell XPS L421X
    (Aaron Lu, Hans de Goede).
 
  - Fixes for the arm_big_little and s5pv210-cpufreq cpufreq drivers
    (Jon Medhurst, Nicolas Pitre).
 
  - kfree()-related fixup for the recently introduced CPPC cpufreq
    frontend (Markus Elfring).
 
  - intel_pstate fix reducing kernel log noise on systems where
    P-states are managed by hardware (Prarit Bhargava).
 
  - intel_pstate maintainers information update (Srinivas Pandruvada).
 
  - cpufreq core optimization related to the handling of delayed work
    items used by governors (Viresh Kumar).
 
  - Locking fixes and cleanups of the Operating Performance Points
    (OPP) framework (Viresh Kumar).
 
  - Generic power domains framework cleanups (Lina Iyer).
 
  - cpupower tool updates (Jacob Tanenbaum, Sriram Raghunathan,
    Thomas Renninger).
 
  - turbostat tool updates (Len Brown).
 
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Merge tag 'pm+acpi-4.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management and ACPI updates from Rafael Wysocki:
 "The only new feature in this batch is support for the ACPI _CCA device
  configuration object, which it a pre-requisite for future ACPI PCI
  support on ARM64, but should not affect the other architectures.

  The rest is fixes and cleanups, mostly in cpufreq (including
  intel_pstate), the Operating Performace Points (OPP) framework and
  tools (cpupower and turbostat).

  Specifics:

   - Support for the ACPI _CCA configuration object intended to tell the
     OS whether or not a bus master device supports hardware managed
     cache coherency and a new set of functions to allow drivers to
     check the cache coherency support for devices in a platform
     firmware interface agnostic way (Suravee Suthikulpanit, Jeremy
     Linton).

   - ACPI backlight quirks for ESPRIMO Mobile M9410 and Dell XPS L421X
     (Aaron Lu, Hans de Goede).

   - Fixes for the arm_big_little and s5pv210-cpufreq cpufreq drivers
     (Jon Medhurst, Nicolas Pitre).

   - kfree()-related fixup for the recently introduced CPPC cpufreq
     frontend (Markus Elfring).

   - intel_pstate fix reducing kernel log noise on systems where
     P-states are managed by hardware (Prarit Bhargava).

   - intel_pstate maintainers information update (Srinivas Pandruvada).

   - cpufreq core optimization related to the handling of delayed work
     items used by governors (Viresh Kumar).

   - Locking fixes and cleanups of the Operating Performance Points
     (OPP) framework (Viresh Kumar).

   - Generic power domains framework cleanups (Lina Iyer).

   - cpupower tool updates (Jacob Tanenbaum, Sriram Raghunathan, Thomas
     Renninger).

   - turbostat tool updates (Len Brown)"

* tag 'pm+acpi-4.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  PCI: ACPI: Add support for PCI device DMA coherency
  PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()
  of/pci: Fix pci_get_host_bridge_device leak
  device property: ACPI: Remove unused DMA APIs
  device property: ACPI: Make use of the new DMA Attribute APIs
  device property: Adding DMA Attribute APIs for Generic Devices
  ACPI: Adding DMA Attribute APIs for ACPI Device
  device property: Introducing enum dev_dma_attr
  ACPI: Honor ACPI _CCA attribute setting
  cpufreq: CPPC: Delete an unnecessary check before the function call kfree()
  PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp()
  PM / OPP: Hold dev_opp_list_lock for writers
  PM / OPP: Protect updates to list_dev with mutex
  PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus()
  cpufreq: s5pv210-cpufreq: fix wrong do_div() usage
  MAINTAINERS: update for intel P-state driver
  Creating a common structure initialization pattern for struct option
  cpupower: Enable disabled Cstates if they are below max latency
  cpupower: Remove debug message when using cpupower idle-set -D switch
  cpupower: cpupower monitor reports uninitialized values for offline cpus
  ...
2015-11-12 11:50:33 -08:00
Dan Williams f42957967f tools/testing/nvdimm, acpica: fix flag rename build breakage
Commit ca321d1ca6 "ACPICA: Update NFIT table to rename a flags field"
performed a tree-wide s/ACPI_NFIT_MEM_ARMED/ACPI_NFIT_MEM_NOT_ARMED/
operation, but missed the tools/testing/nvdimm/ directory.

Cc: Bob Moore <robert.moore@intel.com>
Cc: Lv Zheng <lv.zheng@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-11-12 09:21:18 -08:00
Kamal Mostafa 836d525baa tools: Actually install tmon in the install rule
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Pali Rohar <pali.rohar@gmail.com>
Cc: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Link: http://lkml.kernel.org/r/1447280736-2161-1-git-send-email-kamal@canonical.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-12 10:48:16 -03:00
Rafael J. Wysocki f57ab32a84 Merge branch 'pm-tools'
* pm-tools:
  Creating a common structure initialization pattern for struct option
  cpupower: Enable disabled Cstates if they are below max latency
  cpupower: Remove debug message when using cpupower idle-set -D switch
  cpupower: cpupower monitor reports uninitialized values for offline cpus
  tools/power turbostat: bugfix: print MAX_NON_TURBO_RATIO
  tools/power turbostat: simplify Bzy_MHz calculation
2015-11-12 00:22:56 +01:00
Arnaldo Carvalho de Melo 5602ea09c1 tools include: Add compiler.h to list.h
list.h needs WRITE_ONCE() since 7f5f873c6a ("rculist: Use WRITE_ONCE()
when deleting from reader-visible list") add it before including the
kernel's list.h file.

This fixes builds of 'make perf-tar-src-pkg' perf tool tarball builds,
i.e. out of tree builds.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-e0rb8f7jwz0jn24ttyick9u6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-11 18:41:33 -03:00
Wang Nan 421fd0845e perf probe: Verify parameters in two functions
On kernel with only one out of CONFIG_KPROBE_EVENTS and
CONFIG_UPROBE_EVENTS enabled, 'perf probe -d' causes a segfault because
perf_del_probe_events() calls probe_file__get_events() with a negative
fd.

This patch fixes it by adding parameter validation at the entry of
probe_file__get_events() and probe_file__get_rawlist(). Since they are
both non-static public functions (in .h file), parameter verifying is
required.

v1 -> v2: Verify fd at the head of probe_file__get_rawlist() instead of
          checking at call site (suggested by Masami and Arnaldo at [1,2]).

[1] http://lkml.kernel.org/r/50399556C9727B4D88A595C8584AAB37526048E3@GSjpTKYDCembx32.service.hitachi.net
[2] http://lkml.kernel.org/r/20151105155830.GV13236@kernel.org

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1446803415-83382-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-11 18:41:32 -03:00
Arnaldo Carvalho de Melo e87b49116d perf session: Add missing newlines to some pr_err() calls
Before:

  [acme@zoo linux]$ perf evlist
  WARNING: The perf.data file's data size field is 0 which is unexpected.
  Was the 'perf record' command properly terminated?
  non matching sample_type[acme@zoo linux]$

After:

  [acme@zoo linux]$ perf evlist
  WARNING: The perf.data file's data size field is 0 which is unexpected.
  Was the 'perf record' command properly terminated?
  non matching sample_type
  [acme@zoo linux]$

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wscok3a2s7yrj8156oc2r6qe@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-11 18:41:31 -03:00
Michael Petlan 4a4c03c1bb perf annotate: Support full source file paths for srcline fix
The --full-paths option did not show the full source file paths in the 'perf
annotate' tool, because the value of the option was not propagated into the
related functions.

With this patch the value of the --full-paths option is known to the function
that composes the srcline string, so it prints the full path when necessary.

Committer Note:

This affects annotate when the --print-line option is used:

  # perf annotate -h 2>&1 | grep print-line
      -l, --print-line      print matching source lines (may be slow)

Looking just at the lines that should be affected by this change:

Before:

  # perf annotate --print-line --full-paths --stdio fput | grep '\.[ch]:[0-9]\+'
     94.44 atomic64_64.h:114
      5.56 file_table.c:265
   file_table.c:265    5.56 :	  ffffffff81219a00:       callq  ffffffff81769360 <__fentry__>
   atomic64_64.h:114   94.44 :	  ffffffff81219a05:       lock decq 0x38(%rdi)

After:

  # perf annotate --print-line --full-paths --stdio fput | grep '\.[ch]:[0-9]\+'
     94.44 /home/git/linux/arch/x86/include/asm/atomic64_64.h:114
      5.56 /home/git/linux/fs/file_table.c:265
   /home/git/linux/fs/file_table.c:265    5.56 :	  ffffffff81219a00:       callq  ffffffff81769360 <__fentry__>
   /home/git/linux/arch/x86/include/asm/atomic64_64.h:114   94.44 :	  ffffffff81219a05:       lock decq 0x38(%rdi)
  #

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://permalink.gmane.org/gmane.linux.kernel.perf.user/2365
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-11 18:41:30 -03:00
Yunlong Song 3d07b3bed8 perf test: Add llvm-src-base.c and llvm-src-kbuild.c to .gitignore
Commit b31de018a6 ("perf test: Enhance the
LLVM test: update basic BPF test program") dynamically creates file
llvm-src-base.c during the perf building.

Similarly, the commit 7af3f3d55b ("perf
test: Enhance the LLVM tests: add kbuild test") dynamically creates file
llvm-src-kbuild.c during the perf building. Add them to .gitignore.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: b31de018a6 ("perf test: Enhance the LLVM test: update basic BPF test program")
Fixes: 7af3f3d55b ("perf test: Enhance the LLVM tests: add kbuild test")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-11 18:41:23 -03:00
Linus Torvalds baf51c4392 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal updates from Zhang Rui:

 - Implement generic devfreq cooling mechanism through frequency
   reduction for devices using devfreq.  From Ørjan Eide and Javi
   Merino.

 - Introduce OMAP3 support on TI SoC thermal driver.  From Pavel Mack
   and Eduardo Valentin.

 - A bounch of small fixes on devfreq_cooling, Exynos, IMX, Armada, and
   Rockchip thermal drivers.

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (24 commits)
  thermal: exynos: Directly return 0 instead of using local ret variable
  thermal: exynos: Remove unneeded semicolon
  thermal: exynos: Use IS_ERR() because regulator cannot be NULL
  thermal: exynos: Fix first temperature read after registering sensor
  thermal: exynos: Fix unbalanced regulator disable on probe failure
  devfreq_cooling: return on allocation failure
  thermal: rockchip: support the sleep pinctrl state to avoid glitches in s2r
  dt-bindings: rockchip-thermal: Add the pinctrl states in this document
  thermal: devfreq_cooling: Make power a u64
  thermal: devfreq_cooling: use a thermal_cooling_device for register and unregister
  thermal: underflow bug in imx_set_trip_temp()
  thermal: armada: Fix possible overflow in the Armada 380 thermal sensor formula
  thermal: imx: register irq handler later in probe
  thermal: rockhip: fix setting thermal shutdown polarity
  thermal: rockchip: fix handling of invalid readings
  devfreq_cooling: add trace information
  thermal: Add devfreq cooling
  PM / OPP: get the voltage for all OPPs
  tools/thermal: tmon: use pkg-config also for CFLAGS
  linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS
  ...
2015-11-11 09:03:01 -08:00
Linus Torvalds c5a37883f4 Merge branch 'akpm' (patches from Andrew)
Merge final patch-bomb from Andrew Morton:
 "Various leftovers, mainly Christoph's pci_dma_supported() removals"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  pci: remove pci_dma_supported
  usbnet: remove ifdefed out call to dma_supported
  kaweth: remove ifdefed out call to dma_supported
  sfc: don't call dma_supported
  nouveau: don't call pci_dma_supported
  netup_unidvb: use pci_set_dma_mask insted of pci_dma_supported
  cx23885: use pci_set_dma_mask insted of pci_dma_supported
  cx25821: use pci_set_dma_mask insted of pci_dma_supported
  cx88: use pci_set_dma_mask insted of pci_dma_supported
  saa7134: use pci_set_dma_mask insted of pci_dma_supported
  saa7164: use pci_set_dma_mask insted of pci_dma_supported
  tw68-core: use pci_set_dma_mask insted of pci_dma_supported
  pcnet32: use pci_set_dma_mask insted of pci_dma_supported
  lib/string.c: add ULL suffix to the constant definition
  hugetlb: trivial comment fix
  selftests/mlock2: add ULL suffix to 64-bit constants
  selftests/mlock2: add missing #define _GNU_SOURCE
2015-11-10 21:14:23 -08:00
Linus Torvalds 6a177af775 linux-kselftest-4.4-rc1
This 12 patch update for 4.4-rc1 consists of a new pstore
 test and fixes to existing tests.
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Merge tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 "This 12 patch update for 4.4-rc1 consists of a new pstore test and
  fixes to existing tests"

* tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: breakpoint: Actually build it
  selftests: vm: Try harder to allocate huge pages
  selftests: Make scripts executable
  selftests: kprobe: Choose an always-defined function to probe
  selftests: memfd: Stop unnecessary rebuilds
  selftests: Add missing #include directives
  selftests/seccomp: Be more precise with syscall arguments.
  selftests/seccomp: build and pass on arm64
  selftests: memfd_test: Revised STACK_SIZE to make it 16-byte aligned
  selftests/pstore: add pstore test scripts going with reboot
  selftests/pstore: add pstore test script for pre-reboot
  selftests: add .gitignore for efivarfs
2015-11-10 20:46:45 -08:00
Geert Uytterhoeven e14231cfe7 selftests/mlock2: add ULL suffix to 64-bit constants
On 32-bit (e.g. m68k):

    mlock2-tests.c: In function 'lock_check':
    mlock2-tests.c:293: warning: integer constant is too large for 'long' type
    mlock2-tests.c:294: warning: integer constant is too large for 'long' type
    mlock2-tests.c:299: warning: integer constant is too large for 'long' type
    ...

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Eric B Munson <emunson@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10 16:32:11 -08:00
Geert Uytterhoeven 60997feb14 selftests/mlock2: add missing #define _GNU_SOURCE
On glibc 2.3.6:

    mlock2-tests.c: In function 'seek_to_smaps_entry':
    mlock2-tests.c:158: warning: implicit declaration of function 'getline'

According to the manpage of getline(), it needs _GNU_SOURCE before glibc
2.10.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Eric B Munson <emunson@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10 16:32:11 -08:00
Rafael J. Wysocki 89ba7d8c22 Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools
Pull turbostat changes for v4.4 from Len Brown.

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: bugfix: print MAX_NON_TURBO_RATIO
  tools/power turbostat: simplify Bzy_MHz calculation
2015-11-11 00:01:21 +01:00
Linus Torvalds 264015f8a8 libnvdimm for 4.4:
1/ Add support for the ACPI 6.0 NFIT hot add mechanism to process
    updates of the NFIT at runtime.
 
 2/ Teach the coredump implementation how to filter out DAX mappings.
 
 3/ Introduce NUMA hints for allocations made by the pmem driver, and as
    a side effect all devm allocations now hint their NUMA node by
    default.
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Merge tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "Outside of the new ACPI-NFIT hot-add support this pull request is more
  notable for what it does not contain, than what it does.  There were a
  handful of development topics this cycle, dax get_user_pages, dax
  fsync, and raw block dax, that need more more iteration and will wait
  for 4.5.

  The patches to make devm and the pmem driver NUMA aware have been in
  -next for several weeks.  The hot-add support has not, but is
  contained to the NFIT driver and is passing unit tests.  The coredump
  support is straightforward and was looked over by Jeff.  All of it has
  received a 0day build success notification across 107 configs.

  Summary:

   - Add support for the ACPI 6.0 NFIT hot add mechanism to process
     updates of the NFIT at runtime.

   - Teach the coredump implementation how to filter out DAX mappings.

   - Introduce NUMA hints for allocations made by the pmem driver, and
     as a side effect all devm allocations now hint their NUMA node by
     default"

* tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  coredump: add DAX filtering for FDPIC ELF coredumps
  coredump: add DAX filtering for ELF coredumps
  acpi: nfit: Add support for hot-add
  nfit: in acpi_nfit_init, break on a 0-length table
  pmem, memremap: convert to numa aware allocations
  devm_memremap_pages: use numa_mem_id
  devm: make allocations numa aware by default
  devm_memremap: convert to return ERR_PTR
  devm_memunmap: use devres_release()
  pmem: kill memremap_pmem()
  x86, mm: quiet arch_add_memory()
2015-11-10 12:07:22 -08:00