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David Ahern 853b740711 perf sched timehist: Add option to specify time window of interest 
Add option to allow user to control analysis window. e.g., collect data
for time window and analyze a segment of interest within that window.

Committer notes:

Testing it:

  # perf sched record -a usleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 1.593 MB perf.data (25 samples) ]
  #
  # perf sched timehist | head -18
  Samples do not have callchains.
          time    cpu   task name       wait time  sch delay  run time
                        [tid/pid]          (msec)     (msec)    (msec)
  ------------- ------  --------------- ---------  ---------  --------
   19818.635579 [0002]  <idle>              0.000      0.000     0.000
   19818.635613 [0000]  perf[9116]          0.000      0.000     0.000
   19818.635676 [0000]  <idle>              0.000      0.000     0.063
   19818.635678 [0000]  rcuos/2[29]         0.000      0.002     0.001
   19818.635696 [0002]  perf[9117]          0.000      0.004     0.116
   19818.635702 [0000]  <idle>              0.001      0.000     0.024
   19818.635709 [0002]  migration/2[25]     0.000      0.003     0.012
   19818.636263 [0000]  usleep[9117]        0.005      0.000     0.560
   19818.636316 [0000]  <idle>              0.560      0.000     0.053
   19818.636358 [0002]  <idle>              0.129      0.000     0.649
   19818.636358 [0000]  usleep[9117]        0.053      0.002     0.042
  #

  # perf sched timehist --time 19818.635696,
  Samples do not have callchains.
           time    cpu  task name       wait time  sch delay  run time
                        [tid/pid]          (msec)     (msec)    (msec)
  ------------- ------  ---------------  --------  --------- ---------
   19818.635696 [0002]  perf[9117]          0.000      0.120     0.000
   19818.635702 [0000]  <idle>              0.019      0.000     0.006
   19818.635709 [0002]  migration/2[25]     0.000      0.003     0.012
   19818.636263 [0000]  usleep[9117]        0.005      0.000     0.560
   19818.636316 [0000]  <idle>              0.560      0.000     0.053
   19818.636358 [0002]  <idle>              0.129      0.000     0.649
   19818.636358 [0000]  usleep[9117]        0.053      0.002     0.042
  #
  # perf sched timehist --time 19818.635696,19818.635709
  Samples do not have callchains.
           time    cpu  task name       wait time  sch delay  run time
                        [tid/pid]          (msec)     (msec)    (msec)
  ------------- ------  --------------- ---------  --------- ---------
   19818.635696 [0002]  perf[9117]          0.000      0.120     0.000
   19818.635702 [0000]  <idle>              0.019      0.000     0.006
   19818.635709 [0002]  migration/2[25]     0.000      0.003     0.012
   19818.635709 [0000]  usleep[9117]        0.005      0.000     0.006
  #

Signed-off-by: David Ahern <dsahern@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1480439746-42695-5-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 		2016-12-01 13:02:52 -03:00
..
Documentation perf sched timehist: Add option to specify time window of interest 2016-12-01 13:02:52 -03:00
arch perf test: Remove "test" and similar strings from test descriptions 2016-11-29 12:46:11 -03:00
bench perf bench futex: Sanitize numeric parameters 2016-10-25 09:50:53 -03:00
jvmti perf kvmti: Remove unused Makefile file 2016-11-14 12:42:56 -03:00
pmu-events
…
python
…
scripts
…
tests perf test: Remove "test" and similar strings from test descriptions 2016-11-29 12:46:11 -03:00
trace
…
ui perf annotate: Show invalid jump offset in error message 2016-11-25 15:56:34 -03:00
util perf tools: Move parse_nsec_time to time-utils.c 2016-12-01 13:02:39 -03:00
.gitignore
…
Build
…
CREDITS
…
MANIFEST tools lib: Add for_each_clear_bit macro 2016-10-24 11:07:33 -03:00
Makefile
…
Makefile.config perf jvmti: Plug compilation into perf build 2016-11-14 12:42:47 -03:00
Makefile.perf perf jvmti: Plug compilation into perf build 2016-11-14 12:42:47 -03:00
builtin-annotate.c
…
builtin-bench.c
…
builtin-buildid-cache.c
…
builtin-buildid-list.c
…
builtin-c2c.c perf c2c: Support cascading options 2016-11-23 10:44:06 -03:00
builtin-config.c perf config: Mark where are config items from (user or system) 2016-11-14 13:10:37 -03:00
builtin-data.c
…
builtin-diff.c
…
builtin-evlist.c
…
builtin-help.c
…
builtin-inject.c
…
builtin-kmem.c perf kmem stat: Track memory freed 2016-11-29 12:50:32 -03:00
builtin-kvm.c
…
builtin-list.c
…
builtin-lock.c
…
builtin-mem.c
…
builtin-probe.c
…
builtin-record.c perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
builtin-report.c perf report: Create a symbol_conf flag for showing branch flag counting 2016-11-14 13:23:42 -03:00
builtin-sched.c perf sched timehist: Add option to specify time window of interest 2016-12-01 13:02:52 -03:00
builtin-script.c perf script: Add option to specify time window of interest 2016-12-01 13:02:45 -03:00
builtin-stat.c
…
builtin-timechart.c
…
builtin-top.c perf annotate: Start supporting cross arch annotation 2016-11-17 17:12:50 -03:00
builtin-trace.c perf trace: Update tid/pid filtering option to leverage symbol_conf 2016-11-25 16:04:22 -03:00
builtin-version.c
…
builtin.h
…
command-list.txt
…
design.txt
…
perf-archive.sh
…
perf-completion.sh
…
perf-read-vdso.c
…
perf-sys.h
…
perf-with-kcore.sh
…
perf.c
…
perf.h
…