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Author SHA1 Message Date
James Clark
a527c2c1e2 perf tools: Make quiet mode consistent between tools 
Use the global quiet variable everywhere so that all tools hide warnings
in quiet mode and update the documentation to reflect this.

'perf probe' claimed that errors are not printed in quiet mode but I
don't see this so remove it from the docs.

Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221018094137.783081-3-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-10-27 16:37:26 -03:00
Namhyung Kim
cad10ce366 perf annotate: Add --percent-limit option 
Like in 'perf report' and 'perf top', Add this option to limit the
number of functions it displays based on the overhead value in percent.

This affects only stdio and stdio2 output modes.  Without this, it
shows very long disassembly lines for every function in the data
file.  If users don't want this behavior, they can set a value in
percent to suppress that.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220502232015.697243-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-05-10 14:37:55 -03:00
Yang Jihong
4bcbe438b3 perf annotate: Add itrace options support 
The "auxtrace_info" and "auxtrace" functions are not set in "tool" member of
"annotate". As a result, perf annotate does not support parsing itrace data.

Before:

  # perf record -e arm_spe_0/branch_filter=1/ -a sleep 1
  [ perf record: Woken up 9 times to write data ]
  [ perf record: Captured and wrote 20.874 MB perf.data ]
  # perf annotate --stdio
  Error:
  The perf.data data has no samples!

Solution:

1. Add itrace options in help,
2. Set hook functions of "id_index", "auxtrace_info" and "auxtrace" in perf_tool.

After:

  # perf record --all-user -e arm_spe_0/branch_filter=1/ ls
  Couldn't synthesize bpf events.
  perf.data
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.010 MB perf.data ]
  # perf annotate --stdio
   Percent |      Source code & Disassembly of libc-2.28.so for branch-miss (1 samples, percent: local period)
  ------------------------------------------------------------------------------------------------------------
           :
           :
           :
           :           Disassembly of section .text:
           :
           :           0000000000066180 <__getdelim@@GLIBC_2.17>:
      0.00 :   66180:  stp     x29, x30, [sp, #-96]!
      0.00 :   66184:  cmp     x0, #0x0
      0.00 :   66188:  ccmp    x1, #0x0, #0x4, ne  // ne = any
      0.00 :   6618c:  mov     x29, sp
      0.00 :   66190:  stp     x24, x25, [sp, #56]
      0.00 :   66194:  stp     x26, x27, [sp, #72]
      0.00 :   66198:  str     x28, [sp, #88]
      0.00 :   6619c:  b.eq    66450 <__getdelim@@GLIBC_2.17+0x2d0>  // b.none
      0.00 :   661a0:  stp     x22, x23, [x29, #40]
      0.00 :   661a4:  mov     x22, x1
      0.00 :   661a8:  ldr     w1, [x3]
      0.00 :   661ac:  mov     w23, w2
      0.00 :   661b0:  stp     x20, x21, [x29, #24]
      0.00 :   661b4:  mov     x20, x3
      0.00 :   661b8:  mov     x21, x0
      0.00 :   661bc:  tbnz    w1, #15, 66360 <__getdelim@@GLIBC_2.17+0x1e0>
      0.00 :   661c0:  ldr     x0, [x3, #136]
      0.00 :   661c4:  ldr     x2, [x0, #8]
      0.00 :   661c8:  str     x19, [x29, #16]
      0.00 :   661cc:  mrs     x19, tpidr_el0
      0.00 :   661d0:  sub     x19, x19, #0x700
      0.00 :   661d4:  cmp     x2, x19
      0.00 :   661d8:  b.eq    663f0 <__getdelim@@GLIBC_2.17+0x270>  // b.none
      0.00 :   661dc:  mov     w1, #0x1                        // #1
      0.00 :   661e0:  ldaxr   w2, [x0]
      0.00 :   661e4:  cmp     w2, #0x0
      0.00 :   661e8:  b.ne    661f4 <__getdelim@@GLIBC_2.17+0x74>  // b.any
      0.00 :   661ec:  stxr    w3, w1, [x0]
      0.00 :   661f0:  cbnz    w3, 661e0 <__getdelim@@GLIBC_2.17+0x60>
      0.00 :   661f4:  b.ne    66448 <__getdelim@@GLIBC_2.17+0x2c8>  // b.any
      0.00 :   661f8:  ldr     x0, [x20, #136]
      0.00 :   661fc:  ldr     w1, [x20]
      0.00 :   66200:  ldr     w2, [x0, #4]
      0.00 :   66204:  str     x19, [x0, #8]
      0.00 :   66208:  add     w2, w2, #0x1
      0.00 :   6620c:  str     w2, [x0, #4]
      0.00 :   66210:  tbnz    w1, #5, 66388 <__getdelim@@GLIBC_2.17+0x208>
      0.00 :   66214:  ldr     x19, [x29, #16]
      0.00 :   66218:  ldr     x0, [x21]
      0.00 :   6621c:  cbz     x0, 66228 <__getdelim@@GLIBC_2.17+0xa8>
      0.00 :   66220:  ldr     x0, [x22]
      0.00 :   66224:  cbnz    x0, 6623c <__getdelim@@GLIBC_2.17+0xbc>
      0.00 :   66228:  mov     x0, #0x78                       // #120
      0.00 :   6622c:  str     x0, [x22]
      0.00 :   66230:  bl      20710 <malloc@plt>
      0.00 :   66234:  str     x0, [x21]
      0.00 :   66238:  cbz     x0, 66428 <__getdelim@@GLIBC_2.17+0x2a8>
      0.00 :   6623c:  ldr     x27, [x20, #8]
      0.00 :   66240:  str     x19, [x29, #16]
      0.00 :   66244:  ldr     x19, [x20, #16]
      0.00 :   66248:  sub     x19, x19, x27
      0.00 :   6624c:  cmp     x19, #0x0
      0.00 :   66250:  b.le    66398 <__getdelim@@GLIBC_2.17+0x218>
      0.00 :   66254:  mov     x25, #0x0                       // #0
      0.00 :   66258:  b       662d8 <__getdelim@@GLIBC_2.17+0x158>
      0.00 :   6625c:  nop
      0.00 :   66260:  add     x24, x19, x25
      0.00 :   66264:  ldr     x3, [x22]
      0.00 :   66268:  add     x26, x24, #0x1
      0.00 :   6626c:  ldr     x0, [x21]
      0.00 :   66270:  cmp     x3, x26
      0.00 :   66274:  b.cs    6629c <__getdelim@@GLIBC_2.17+0x11c>  // b.hs, b.nlast
      0.00 :   66278:  lsl     x3, x3, #1
      0.00 :   6627c:  cmp     x3, x26
      0.00 :   66280:  csel    x26, x3, x26, cs  // cs = hs, nlast
      0.00 :   66284:  mov     x1, x26
      0.00 :   66288:  bl      206f0 <realloc@plt>
      0.00 :   6628c:  cbz     x0, 66438 <__getdelim@@GLIBC_2.17+0x2b8>
      0.00 :   66290:  str     x0, [x21]
      0.00 :   66294:  ldr     x27, [x20, #8]
      0.00 :   66298:  str     x26, [x22]
      0.00 :   6629c:  mov     x2, x19
      0.00 :   662a0:  mov     x1, x27
      0.00 :   662a4:  add     x0, x0, x25
      0.00 :   662a8:  bl      87390 <explicit_bzero@@GLIBC_2.25+0x50>
      0.00 :   662ac:  ldr     x0, [x20, #8]
      0.00 :   662b0:  add     x19, x0, x19
      0.00 :   662b4:  str     x19, [x20, #8]
      0.00 :   662b8:  cbnz    x28, 66410 <__getdelim@@GLIBC_2.17+0x290>
      0.00 :   662bc:  mov     x0, x20
      0.00 :   662c0:  bl      73b80 <__underflow@@GLIBC_2.17>
      0.00 :   662c4:  cmn     w0, #0x1
      0.00 :   662c8:  b.eq    66410 <__getdelim@@GLIBC_2.17+0x290>  // b.none
      0.00 :   662cc:  ldp     x27, x19, [x20, #8]
      0.00 :   662d0:  mov     x25, x24
      0.00 :   662d4:  sub     x19, x19, x27
      0.00 :   662d8:  mov     x2, x19
      0.00 :   662dc:  mov     w1, w23
      0.00 :   662e0:  mov     x0, x27
      0.00 :   662e4:  bl      807b0 <memchr@@GLIBC_2.17>
      0.00 :   662e8:  cmp     x0, #0x0
      0.00 :   662ec:  mov     x28, x0
      0.00 :   662f0:  sub     x0, x0, x27
      0.00 :   662f4:  csinc   x19, x19, x0, eq  // eq = none
      0.00 :   662f8:  mov     x0, #0x7fffffffffffffff         // #9223372036854775807
      0.00 :   662fc:  sub     x0, x0, x25
      0.00 :   66300:  cmp     x19, x0
      0.00 :   66304:  b.lt    66260 <__getdelim@@GLIBC_2.17+0xe0>  // b.tstop
      0.00 :   66308:  adrp    x0, 17f000 <sys_sigabbrev@@GLIBC_2.17+0x320>
      0.00 :   6630c:  ldr     x0, [x0, #3624]
      0.00 :   66310:  mrs     x2, tpidr_el0
      0.00 :   66314:  ldr     x19, [x29, #16]
      0.00 :   66318:  mov     w3, #0x4b                       // #75
      0.00 :   6631c:  ldr     w1, [x20]
      0.00 :   66320:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   66324:  str     w3, [x2, x0]
      0.00 :   66328:  tbnz    w1, #15, 66340 <__getdelim@@GLIBC_2.17+0x1c0>
      0.00 :   6632c:  ldr     x0, [x20, #136]
      0.00 :   66330:  ldr     w1, [x0, #4]
      0.00 :   66334:  sub     w1, w1, #0x1
      0.00 :   66338:  str     w1, [x0, #4]
      0.00 :   6633c:  cbz     w1, 663b8 <__getdelim@@GLIBC_2.17+0x238>
      0.00 :   66340:  mov     x0, x24
      0.00 :   66344:  ldr     x28, [sp, #88]
      0.00 :   66348:  ldp     x20, x21, [x29, #24]
      0.00 :   6634c:  ldp     x22, x23, [x29, #40]
      0.00 :   66350:  ldp     x24, x25, [sp, #56]
      0.00 :   66354:  ldp     x26, x27, [sp, #72]
      0.00 :   66358:  ldp     x29, x30, [sp], #96
      0.00 :   6635c:  ret
    100.00 :   66360:  tbz     w1, #5, 66218 <__getdelim@@GLIBC_2.17+0x98>
      0.00 :   66364:  ldp     x20, x21, [x29, #24]
      0.00 :   66368:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   6636c:  ldp     x22, x23, [x29, #40]
      0.00 :   66370:  mov     x0, x24
      0.00 :   66374:  ldp     x24, x25, [sp, #56]
      0.00 :   66378:  ldp     x26, x27, [sp, #72]
      0.00 :   6637c:  ldr     x28, [sp, #88]
      0.00 :   66380:  ldp     x29, x30, [sp], #96
      0.00 :   66384:  ret
      0.00 :   66388:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   6638c:  ldr     x19, [x29, #16]
      0.00 :   66390:  b       66328 <__getdelim@@GLIBC_2.17+0x1a8>
      0.00 :   66394:  nop
      0.00 :   66398:  mov     x0, x20
      0.00 :   6639c:  bl      73b80 <__underflow@@GLIBC_2.17>
      0.00 :   663a0:  cmn     w0, #0x1
      0.00 :   663a4:  b.eq    66438 <__getdelim@@GLIBC_2.17+0x2b8>  // b.none
      0.00 :   663a8:  ldp     x27, x19, [x20, #8]
      0.00 :   663ac:  sub     x19, x19, x27
      0.00 :   663b0:  b       66254 <__getdelim@@GLIBC_2.17+0xd4>
      0.00 :   663b4:  nop
      0.00 :   663b8:  str     xzr, [x0, #8]
      0.00 :   663bc:  ldxr    w2, [x0]
      0.00 :   663c0:  stlxr   w3, w1, [x0]
      0.00 :   663c4:  cbnz    w3, 663bc <__getdelim@@GLIBC_2.17+0x23c>
      0.00 :   663c8:  cmp     w2, #0x1
      0.00 :   663cc:  b.le    66340 <__getdelim@@GLIBC_2.17+0x1c0>
      0.00 :   663d0:  mov     x1, #0x81                       // #129
      0.00 :   663d4:  mov     x2, #0x1                        // #1
      0.00 :   663d8:  mov     x3, #0x0                        // #0
      0.00 :   663dc:  mov     x8, #0x62                       // #98
      0.00 :   663e0:  svc     #0x0
      0.00 :   663e4:  ldp     x20, x21, [x29, #24]
      0.00 :   663e8:  ldp     x22, x23, [x29, #40]
      0.00 :   663ec:  b       66370 <__getdelim@@GLIBC_2.17+0x1f0>
      0.00 :   663f0:  ldr     w2, [x0, #4]
      0.00 :   663f4:  add     w2, w2, #0x1
      0.00 :   663f8:  str     w2, [x0, #4]
      0.00 :   663fc:  tbz     w1, #5, 66214 <__getdelim@@GLIBC_2.17+0x94>
      0.00 :   66400:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   66404:  ldr     x19, [x29, #16]
      0.00 :   66408:  b       66330 <__getdelim@@GLIBC_2.17+0x1b0>
      0.00 :   6640c:  nop
      0.00 :   66410:  ldr     x0, [x21]
      0.00 :   66414:  strb    wzr, [x0, x24]
      0.00 :   66418:  ldr     w1, [x20]
      0.00 :   6641c:  ldr     x19, [x29, #16]
      0.00 :   66420:  b       66328 <__getdelim@@GLIBC_2.17+0x1a8>
      0.00 :   66424:  nop
      0.00 :   66428:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   6642c:  ldr     w1, [x20]
      0.00 :   66430:  b       66328 <__getdelim@@GLIBC_2.17+0x1a8>
      0.00 :   66434:  nop
      0.00 :   66438:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   6643c:  ldr     w1, [x20]
      0.00 :   66440:  ldr     x19, [x29, #16]
      0.00 :   66444:  b       66328 <__getdelim@@GLIBC_2.17+0x1a8>
      0.00 :   66448:  bl      e3ba0 <pthread_setcanceltype@@GLIBC_2.17+0x30>
      0.00 :   6644c:  b       661f8 <__getdelim@@GLIBC_2.17+0x78>
      0.00 :   66450:  adrp    x0, 17f000 <sys_sigabbrev@@GLIBC_2.17+0x320>
      0.00 :   66454:  ldr     x0, [x0, #3624]
      0.00 :   66458:  mrs     x1, tpidr_el0
      0.00 :   6645c:  mov     w2, #0x16                       // #22
      0.00 :   66460:  mov     x24, #0xffffffffffffffff        // #-1
      0.00 :   66464:  str     w2, [x1, x0]
      0.00 :   66468:  b       66370 <__getdelim@@GLIBC_2.17+0x1f0>
      0.00 :   6646c:  ldr     w1, [x20]
      0.00 :   66470:  mov     x4, x0
      0.00 :   66474:  tbnz    w1, #15, 6648c <__getdelim@@GLIBC_2.17+0x30c>
      0.00 :   66478:  ldr     x0, [x20, #136]
      0.00 :   6647c:  ldr     w1, [x0, #4]
      0.00 :   66480:  sub     w1, w1, #0x1
      0.00 :   66484:  str     w1, [x0, #4]
      0.00 :   66488:  cbz     w1, 66494 <__getdelim@@GLIBC_2.17+0x314>
      0.00 :   6648c:  mov     x0, x4
      0.00 :   66490:  bl      20e40 <gnu_get_libc_version@@GLIBC_2.17+0x130>
      0.00 :   66494:  str     xzr, [x0, #8]
      0.00 :   66498:  ldxr    w2, [x0]
      0.00 :   6649c:  stlxr   w3, w1, [x0]
      0.00 :   664a0:  cbnz    w3, 66498 <__getdelim@@GLIBC_2.17+0x318>
      0.00 :   664a4:  cmp     w2, #0x1
      0.00 :   664a8:  b.le    6648c <__getdelim@@GLIBC_2.17+0x30c>
      0.00 :   664ac:  mov     x1, #0x81                       // #129
      0.00 :   664b0:  mov     x2, #0x1                        // #1
      0.00 :   664b4:  mov     x3, #0x0                        // #0
      0.00 :   664b8:  mov     x8, #0x62                       // #98
      0.00 :   664bc:  svc     #0x0
      0.00 :   664c0:  b       6648c <__getdelim@@GLIBC_2.17+0x30c>

Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210615091704.259202-1-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-06-16 15:07:42 -03:00
Martin Liška
3406ac5347 perf annotate: Add --demangle and --demangle-kernel 
'perf annotate' supports --symbol but it's impossible to filter a C++
symbol. With --no-demangle one can filter easily by mangled function
name.

Signed-off-by: Martin Liška <mliska@suse.cz>
Link: http://lore.kernel.org/lkml/c3c7e959-9f7f-18e2-e795-f604275cbac3@suse.cz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-03-31 10:39:48 -03:00
Andi Kleen
3b0b16bf8c perf tools: Support --prefix/--prefix-strip 
The objdump utility has useful --prefix / --prefix-strip options to
allow changing source code file names hardcoded into executables' debug
info. Add options to 'perf report', 'perf top' and 'perf annotate',
which are then passed to objdump.

  $ mkdir foo
  $ echo 'main() { for (;;); }' > foo/foo.c
  $ gcc -g foo/foo.c
  foo/foo.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
      1 | main() { for (;;); }
        | ^~~~
  $ perf record ./a.out
  ^C[ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.230 MB perf.data (5721 samples) ]
  $ mv foo bar
  $ perf annotate
  <does not show source code>
  $ perf annotate --prefix=/home/ak/lsrc/git/bar --prefix-strip=5
  <does show source code>

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
LPU-Reference: 20200107210444.214071-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2020-01-14 12:02:19 -03:00
Jiri Olsa
88c2119077 perf annotate: Add --percent-type option 
Add --percent-type option to set annotation percent type from following
choices:

  global-period, local-period, global-hits, local-hits

Examples:

  $ perf annotate --percent-type period-local --stdio | head -1
   Percent         |      Source code ... es, percent: local period)
  $ perf annotate --percent-type hits-local --stdio | head -1
   Percent         |      Source code ... es, percent: local hits)
  $ perf annotate --percent-type hits-global --stdio | head -1
   Percent         |      Source code ... es, percent: global hits)
  $ perf annotate --percent-type period-global --stdio | head -1
   Percent         |      Source code ... es, percent: global period)

The local/global keywords set if the percentage is computed in the scope
of the function (local) or the whole data (global).

The period/hits keywords set the base the percentage is computed on -
the samples period or the number of samples (hits).

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20180804130521.11408-20-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2018-08-08 15:55:53 -03:00
Arnaldo Carvalho de Melo
be316409e9 perf annotate: Introduce --ignore-vmlinux command line option 
This is already present in 'perf top', albeit undocumented (will fix),
and is useful to use /proc/kcore instead of vmlinux and then get what is
really in place, not what the kernel starts with, before alternatives,
ftrace .text patching, etc, see the differences:

  # perf annotate --stdio2 _raw_spin_lock_irqsave
  _raw_spin_lock_irqsave() /lib/modules/4.16.0-rc4/build/vmlinux
  Event: anon group { cycles, instructions }

    0.00   3.17      → callq  __fentry__
    0.00   7.94        push   %rbx
    7.69  36.51      → callq  __page_file_index
                       mov    %rax,%rbx
    7.69   3.17      → callq  *ffffffff82225cd0
                       xor    %eax,%eax
                       mov    $0x1,%edx
   80.77  49.21        lock   cmpxchg %edx,(%rdi)
                       test   %eax,%eax
                     ↓ jne    2b
    3.85   0.00        mov    %rbx,%rax
                       pop    %rbx
                     ← retq
                 2b:   mov    %eax,%esi
                     → callq  queued_spin_lock_slowpath
                       mov    %rbx,%rax
                       pop    %rbx
                     ← retq
  [root@jouet ~]# perf annotate --ignore-vmlinux --stdio2 _raw_spin_lock_irqsave
  _raw_spin_lock_irqsave() /proc/kcore
  Event: anon group { cycles, instructions }

    0.00   3.17        nop
    0.00   7.94        push   %rbx
    0.00  23.81        pushfq
    7.69  12.70        pop    %rax
                       nop
                       mov    %rax,%rbx
    7.69   3.17        cli
                       nop
                       xor    %eax,%eax
                       mov    $0x1,%edx
   80.77  49.21        lock   cmpxchg %edx,(%rdi)
                       test   %eax,%eax
                     ↓ jne    2b
    3.85   0.00        mov    %rbx,%rax
                       pop    %rbx
                     ← retq
                 2b:   mov    %eax,%esi
                     → callq  *ffffffff820e96b0
                       mov    %rbx,%rax
                       pop    %rbx
                     ← retq
  #

Diff of the output of those commands:

  # perf annotate --stdio2 _raw_spin_lock_irqsave > /tmp/vmlinux
  # perf annotate --ignore-vmlinux --stdio2 _raw_spin_lock_irqsave > /tmp/kcore
  # diff -y /tmp/vmlinux /tmp/kcore
  _raw_spin_lock_irqsave() vmlinux             | _raw_spin_lock_irqsave() /proc/kcore
  Event: anon group { cycles, instructions }     Event: anon group { cycles, instructions }

   0.00  3.17  → callq __fentry__              |  0.00  3.17     nop
   0.00  7.94    push  %rbx                       0.00  7.94     push  %rbx
   7.69 36.51  → callq __page_file_index       |  0.00 23.81     pushfq
                                               >  7.69 12.70     pop   %rax
                                               >                 nop
                 mov   %rax,%rbx                                 mov   %rax,%rbx
   7.69  3.17  → callq *ffffffff82225cd0       |  7.69  3.17     cli
                                               >                 nop
                 xor   %eax,%eax                                 xor   %eax,%eax
                 mov   $0x1,%edx                                 mov   $0x1,%edx
  80.77 49.21    lock  cmpxchg %edx,(%rdi)       80.77 49.21     lock  cmpxchg %edx,(%rdi)
                 test  %eax,%eax                                 test  %eax,%eax
               ↓ jne   2b                                      ↓ jne   2b
   3.85  0.00    mov   %rbx,%rax                  3.85  0.00     mov   %rbx,%rax
                 pop   %rbx                                      pop   %rbx
               ← retq                                          ← retq
            2b:  mov   %eax,%esi                            2b:  mov   %eax,%esi
               → callq queued_spin_lock_slowpath|              → callq *ffffffff820e96b0
                 mov   %rbx,%rax                                 mov   %rbx,%rax
                 pop   %rbx                                      pop   %rbx
               ← retq                                          ← retq
  #

This should be further streamlined by doing both annotations and
allowing the TUI to toggle initial/current, and show the patched
instructions in a slightly different color.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-wz8d269hxkcwaczr0r4rhyjg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2018-03-21 12:53:42 -03:00
Arnaldo Carvalho de Melo
befd2a38a6 perf annotate: Introduce the --stdio2 output mode 
This uses the TUI augmented formatting routines, modulo interactivity.

  # perf annotate --ignore-vmlinux --stdio2 _raw_spin_lock_irqsave
  _raw_spin_lock_irqsave() /proc/kcore
  Event: cycles:ppp

  Percent

              Disassembly of section load0:

              ffffffff9a8734b0 <load0>:
                nop
                push   %rbx
   50.00        pushfq
                pop    %rax
                nop
                mov    %rax,%rbx
                cli
                nop
                xor    %eax,%eax
                mov    $0x1,%edx
   50.00        lock   cmpxchg %edx,(%rdi)
                test   %eax,%eax
              ↓ jne    2b
                mov    %rbx,%rax
                pop    %rbx
              ← retq
          2b:   mov    %eax,%esi
              → callq  queued_spin_lock_slowpath
                mov    %rbx,%rax
                pop    %rbx
              ← retq

Tested-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-6cte5o8z84mbivbvqlg14uh1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2018-03-21 12:53:26 -03:00
Jaecheol Shin
ac2c306838 perf annotate: Add missing arguments in Man page 
Some options must require an argument. But input, stdio-color, cpu have
no them.  So I added it.

Signed-off-by: Jaecheol Shin <jcgod413@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/20180207095205.62715-1-jcgod413@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2018-02-16 14:55:41 -03:00
Taeung Song
01c85629f5 perf annotate: Document --show-total-period option 
When the --show-total-period option was introduced we forgot to add an
entry in the man page, fix it.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Martin Liška <mliska@suse.cz>
Fixes: 0c4a5bcea4 ("perf annotate: Display total number of samples with --show-total-period")
Link: http://lkml.kernel.org/r/1503046013-5555-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-08-18 10:34:08 -03:00
Taeung Song
1ac39372e0 perf annotate stdio: Support --show-nr-samples option 
Add --show-nr-samples option to "perf annotate" so that it matches "perf
report".

Committer note:

Note that it can't be used together with --show-total-period, which
seems like a silly limitation, that can be lifted at some point.

Made it bail out if not on --stdio.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1503046008-5511-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-08-18 10:31:53 -03:00
Namhyung Kim
eddaef8896 perf annotate: Add -q/--quiet option 
The -q/--quiet option is to suppress any message.  Sometimes users just
want to see the numbers and it can be used for that case.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170217081742.17417-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-02-20 11:47:18 -03:00
Arnaldo Carvalho de Melo
53fe4ba1da perf annotate: Introduce --stdio-color to setup the color output mode selection 
'perf annotate --stdio' will colorize entries with most hits and
possibly some other aspects of its output, but those colors gets
suppressed if we redirect the output to a non-tty, allow keeping the
colors by adding a new option, --stdio-color, now this use case will
also output escape sequences for colors:

  $ perf annotate --stdio-color | more

Based-on-a-patch-by: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-sjrnixani5pg6qez640gaxhf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-07-12 00:00:39 -03:00
Jiri Olsa
e0be62cc03 perf tools: Make -f/--force option documentation consistent across tools 
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1458823940-24583-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-03-30 11:14:08 -03:00
Namhyung Kim
b1dd443296 perf annotate: Add basic support to event group view 
Add --group option to enable event grouping.  When enabled, all the
group members information will be shown with the leader so skip
non-leader events.

It only supports --stdio output currently.  Later patches will extend
additional features.

 $ perf annotate --group --stdio
 ...
  Percent                 |      Source code & Disassembly of libpthread-2.15.so
 --------------------------------------------------------------------------------
                          :
                          :
                          :
                          :      Disassembly of section .text:
                          :
                          :      000000387dc0aa50 <__pthread_mutex_unlock_usercnt>:
     8.08    2.40    5.29 :        387dc0aa50:   mov    %rdi,%rdx
     0.00    0.00    0.00 :        387dc0aa53:   mov    0x10(%rdi),%edi
     0.00    0.00    0.00 :        387dc0aa56:   mov    %edi,%eax
     0.00    0.80    0.00 :        387dc0aa58:   and    $0x7f,%eax
     3.03    2.40    3.53 :        387dc0aa5b:   test   $0x7c,%dil
     0.00    0.00    0.00 :        387dc0aa5f:   jne    387dc0aaa9 <__pthread_mutex_unlock_use
     0.00    0.00    0.00 :        387dc0aa61:   test   %eax,%eax
     0.00    0.00    0.00 :        387dc0aa63:   jne    387dc0aa85 <__pthread_mutex_unlock_use
     0.00    0.00    0.00 :        387dc0aa65:   and    $0x80,%edi
     0.00    0.00    0.00 :        387dc0aa6b:   test   %esi,%esi
     3.03    5.60    7.06 :        387dc0aa6d:   movl   $0x0,0x8(%rdx)
     0.00    0.00    0.59 :        387dc0aa74:   je     387dc0aa7a <__pthread_mutex_unlock_use
     0.00    0.00    0.00 :        387dc0aa76:   subl   $0x1,0xc(%rdx)
     2.02    5.60    1.18 :        387dc0aa7a:   mov    %edi,%esi
     0.00    0.00    0.00 :        387dc0aa7c:   lock decl (%rdx)
    83.84   83.20   82.35 :        387dc0aa7f:   jne    387dc0aada <_L_unlock_586>
     0.00    0.00    0.00 :        387dc0aa81:   nop
     0.00    0.00    0.00 :        387dc0aa82:   xor    %eax,%eax
     0.00    0.00    0.00 :        387dc0aa84:   retq
 ...

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1362462812-30885-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2013-03-15 13:06:05 -03:00
Namhyung Kim
18c9e5c567 perf annotate: Make it to be able to skip unannotatable symbols 
Add --skip-missing option for skipping symbols that cannot be used for
annotation.  It's the case of kernel symbols that user doesn't have a
vmlinux image file.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1360227734-375-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2013-02-14 14:59:28 -03:00
Namhyung Kim
2b676bf068 perf ui/gtk: Implement basic GTK2 annotation browser 
Basic implementation of perf annotate on GTK2.  Currently only
shows first symbol.  Add a new --gtk option to use it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1360227734-375-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2013-02-14 14:59:27 -03:00
Maciek Borzecki
7a4ec93885 perf tools: Allow user to indicate path to objdump in command line 
When analyzing perf data from hosts of other architecture than one of
the local host it's useful to call objdump that is part of a toolchain
for that architecture. Instead of calling regular objdump, call one that
user specified in command line.

Signed-off-by: Maciek Borzecki <maciek.borzecki@gmail.com>
Acked-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1346754750.16299.3.camel@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2012-09-05 19:41:55 -03:00
Robert Richter
efad14150a perf report: Accept fifos as input file 
The default input file for perf report is not handled the same way as
perf record does it for its output file. This leads to unexpected
behavior of perf report, etc. E.g.:

 # perf record -a -e cpu-cycles sleep 2 | perf report | cat
 failed to open perf.data: No such file or directory  (try 'perf record' first)

While perf record writes to a fifo, perf report expects perf.data to be
read. This patch changes this to accept fifos as input file.

Applies to the following commands:

 perf annotate
 perf buildid-list
 perf evlist
 perf kmem
 perf lock
 perf report
 perf sched
 perf script
 perf timechart

Also fixes char const* -> const char* type declaration for filename
strings.

v2:
* Prevent potential null pointer access to input_name in
  builtin-report.c. Needed due to removal of patch "perf report: Setup
  browser if stdout is a pipe"

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2011-12-23 17:01:03 -02:00
David Ahern
c8e6672035 perf tools: make -C consistent across commands (for cpu list arg) 
Currently the meaning of -C varies by perf command: for perf-top,
perf-stat, perf-record it means cpu list. For perf-report it means comm
list. Then perf-annotate, perf-report and perf-script use -c for cpu
list.

Fix annotate, report and script to use -C for cpu list to be consistent
with top, stat and record. This means report needs to use -c for comm
list which does introduce a backward compatibility change.

v1 -> v2
- update perf-script.txt too

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1321209008-7004-1-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2011-11-28 11:45:53 -02:00
Arnaldo Carvalho de Melo
64c6f0c7f8 perf tools: Make --no-asm-raw the default 
And add the annotation output knobs to all the tools that have
integrated annotation (top, report).

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-gnlob67mke6sji2kf4nstp7m@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2011-10-07 17:01:32 -03:00
Andi Kleen
f69b64f73e perf: Support setting the disassembler style 
Add -M option to report/annotate to pass directly to objdump.  This
allows to use -M intel for intel style disassembler syntax, which is
useful for people who are very used to the Intel syntax.

Link: http://lkml.kernel.org/r/1316122302-24306-2-git-send-email-andi@firstfloor.org
[committer note: Add missing Documentation bits, fixup conflicts with 3e6a2a7]
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2011-09-29 17:10:00 -03:00
Stephane Eranian
e71a059832 perf annotate: Add --symfs option 
If you have --symfs in perf report, then you also need it for perf
annotate.  This allows off-box assembly level analysis of perf.data
samples.

This patch complements:

commit ec5761eab3
Author: David Ahern <daahern@cisco.com>
Date:   Thu Dec 9 13:27:07 2010 -0700

    perf symbols: Add symfs option for off-box analysis using specified tree

Acked-by: David Ahern <daahern@cisco.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Ahern <daahern@cisco.com>
Link: http://lkml.kernel.org/r/20110729232040.GA21838@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2011-08-18 07:40:34 -03:00
Stephane Eranian
3e6a2a7f3b perf annotate: Make output more readable 
This patch adds two new options to perf annotate:
	- --no-asm-raw : Do not display raw instruction encodings
	- --no-source  : Do not interleave source code with assembly code

We believe those options make the output of annotate more readable.

Systematically displaying source can make it hard to follow code and
especially optimized code.

Raw encodings are not useful in most cases.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20110517153207.GA9834@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
[committer note: Use the 'no-' option inverting logic]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2011-08-18 07:38:21 -03:00
Anton Blanchard
5d67be97f8 perf report/annotate/script: Add option to specify a CPU range 
Add an option to perf report/annotate/script to specify which
CPUs to operate on. This enables us to take a single system wide
profile and analyse each CPU (or group of CPUs) in isolation.

This was useful when profiling a multiprocess workload where the
bottleneck was on one CPU but this was hidden in the overall
profile. Per process and per thread breakdowns didn't help
because multiple processes were running on each CPU and no
single process consumed an entire CPU.

The patch converts the list of CPUs returned by cpu_map__new
into a bitmap for fast lookup. I wanted to use -C to be
consistent with perf top/record/stat, but unfortunately perf
report already uses -C <comms>.

 v2: Incorporate suggestions from David Ahern:
	- Added -c to perf script
	- Check that SAMPLE_CPU is set when -c is used
	- Update documentation

 v3: Create perf_session__cpu_bitmap()

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Link: http://lkml.kernel.org/r/20110704215750.11647eb9@kryten
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2011-07-05 10:44:44 +02:00
Shawn Bohrer
1968ad911d perf annotate: Document missing options. 
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1291168642-11402-2-git-send-email-shawn.bohrer@gmail.com>
Signed-off-by: Shawn Bohrer <shawn.bohrer@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2010-12-01 18:22:45 -02:00
Arnaldo Carvalho de Melo
8b9e74eb8a perf tools: Add --tui and --stdio to choose the UI 
Relying just on ~/.perfconfig or rebuilding the tool disabling support
for the TUI is too cumbersome, so allow specifying which UI to use and
make the command line switch override whatever is in ~/.perfconfig.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2010-08-21 10:49:46 -03:00
Arnaldo Carvalho de Melo
4778e0e8c6 perf tools: Fixup minor doc formatting issues 
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2010-05-05 11:23:27 -03:00
Ingo Molnar
864709302a perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 
Several people have suggested that 'perf' has become a full-fledged
tool that should be moved out of Documentation/. Move it to the
(new) tools/ directory.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2009-06-06 20:33:43 +02:00
Renamed from Documentation/perf_counter/Documentation/perf-annotate.txt (Browse further)