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Yang Jihong 9b3a48bbe2 perf sched timehist: Add --prio option 
The --prio option is used to only show events for the given task priority(ies).
The default is to show events for all priority tasks, which is consistent with
the previous behavior.

Testcase:
  # perf sched record nice -n 9 perf bench sched messaging -l 10000
  # Running 'sched/messaging' benchmark:
  # 20 sender and receiver processes per group
  # 10 groups == 400 processes run

       Total time: 3.435 [sec]
  [ perf record: Woken up 270 times to write data ]
  [ perf record: Captured and wrote 618.688 MB perf.data (5729036 samples) ]

  # perf sched timehist -h

   Usage: perf sched timehist [<options>]

      -C, --cpu <cpu>       list of cpus to profile
      -D, --dump-raw-trace  dump raw trace in ASCII
      -f, --force           don't complain, do it
      -g, --call-graph      Display call chains if present (default on)
      -I, --idle-hist       Show idle events only
      -i, --input <file>    input file name
      -k, --vmlinux <file>  vmlinux pathname
      -M, --migrations      Show migration events
      -n, --next            Show next task
      -p, --pid <pid[,pid...]>
                            analyze events only for given process id(s)
      -s, --summary         Show only syscall summary with statistics
      -S, --with-summary    Show all syscalls and summary with statistics
      -t, --tid <tid[,tid...]>
                            analyze events only for given thread id(s)
      -V, --cpu-visual      Add CPU visual
      -v, --verbose         be more verbose (show symbol address, etc)
      -w, --wakeups         Show wakeup events
          --kallsyms <file>
                            kallsyms pathname
          --max-stack <n>   Maximum number of functions to display backtrace.
          --prio <prio>     analyze events only for given task priority(ies)
          --show-prio       Show task priority
          --state           Show task state when sched-out
          --symfs <directory>
                            Look for files with symbols relative to this directory
          --time <str>      Time span for analysis (start,stop)

  # perf sched timehist --prio 140
  Samples of sched_switch event do not have callchains.
  Invalid prio string

  # perf sched timehist --show-prio --prio 129
  Samples of sched_switch event do not have callchains.
             time    cpu  task name                       prio      wait time  sch delay   run time
                          [tid/pid]                                    (msec)     (msec)     (msec)
  --------------- ------  ------------------------------  --------  ---------  ---------  ---------
   2090450.765421 [0002]  sched-messaging[1229618]        129           0.000      0.000      0.029
   2090450.765445 [0007]  sched-messaging[1229616]        129           0.000      0.062      0.043
   2090450.765448 [0014]  sched-messaging[1229619]        129           0.000      0.000      0.032
   2090450.765478 [0013]  sched-messaging[1229617]        129           0.000      0.065      0.048
   2090450.765503 [0014]  sched-messaging[1229622]        129           0.000      0.000      0.017
   2090450.765550 [0002]  sched-messaging[1229624]        129           0.000      0.000      0.021
   2090450.765562 [0007]  sched-messaging[1229621]        129           0.000      0.071      0.028
   2090450.765570 [0005]  sched-messaging[1229620]        129           0.000      0.064      0.066
   2090450.765583 [0001]  sched-messaging[1229625]        129           0.000      0.001      0.031
   2090450.765595 [0013]  sched-messaging[1229623]        129           0.000      0.060      0.028
   2090450.765637 [0014]  sched-messaging[1229628]        129           0.000      0.000      0.019
   2090450.765665 [0007]  sched-messaging[1229627]        129           0.000      0.038      0.030
  <SNIP>

  # perf sched timehist --show-prio --prio 0,120-129
  Samples of sched_switch event do not have callchains.
             time    cpu  task name                       prio      wait time  sch delay   run time
                          [tid/pid]                                    (msec)     (msec)     (msec)
  --------------- ------  ------------------------------  --------  ---------  ---------  ---------
   2090450.763231 [0000]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763235 [0000]  migration/0[15]                 0             0.000      0.001      0.003
   2090450.763263 [0001]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763268 [0001]  migration/1[21]                 0             0.000      0.001      0.004
   2090450.763302 [0002]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763309 [0002]  migration/2[27]                 0             0.000      0.001      0.007
   2090450.763338 [0003]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763343 [0003]  migration/3[33]                 0             0.000      0.001      0.004
   2090450.763459 [0004]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763469 [0004]  migration/4[39]                 0             0.000      0.002      0.010
   2090450.763496 [0005]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763501 [0005]  migration/5[45]                 0             0.000      0.001      0.004
   2090450.763613 [0006]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763622 [0006]  migration/6[51]                 0             0.000      0.001      0.008
   2090450.763652 [0007]  perf[1229608]                   120           0.000      0.000      0.000
   2090450.763660 [0007]  migration/7[57]                 0             0.000      0.001      0.008
  <SNIP>
   2090450.765665 [0001]  <idle>                          120           0.031      0.031      0.081
   2090450.765665 [0007]  sched-messaging[1229627]        129           0.000      0.038      0.030
   2090450.765667 [0000]  s1-perf[8235/7168]              120           0.008      0.000      0.004
   2090450.765684 [0013]  <idle>                          120           0.028      0.028      0.088
   2090450.765685 [0001]  sched-messaging[1229630]        129           0.000      0.001      0.020
   2090450.765688 [0000]  <idle>                          120           0.004      0.004      0.020
   2090450.765689 [0002]  <idle>                          120           0.021      0.021      0.138
   2090450.765691 [0005]  sched-messaging[1229626]        129           0.000      0.085      0.029

Signed-off-by: Yang Jihong <yangjihong@bytedance.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
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: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240819033016.2427235-3-yangjihong@bytedance.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2024-09-03 15:45:59 -03:00
..
accounting
arch tools/include: Sync arm64 headers with the kernel sources 2024-08-07 10:59:07 -07:00
bootconfig
bpf tools/resolve_btfids: Fix comparison of distinct pointer types warning in resolve_btfids 2024-07-22 16:35:30 +02:00
build perf report: Support LLVM for addr2line() 2024-09-03 10:15:16 -03:00
certs
cgroup proc: rewrite stable_page_flags() 2024-04-25 20:56:15 -07:00
counter
crypto
debugging
firewire
firmware
gpio gpio: add sloppy logic analyzer using polling 2024-07-01 10:54:11 +02:00
hv tools: hv: suppress the invalid warning for packed member alignment 2024-05-28 05:27:35 +00:00
iio
include perf: cs-etm: Support version 0.1 of HW_ID packets 2024-08-29 15:56:13 -03:00
kvm/kvm_stat
laptop
leds
lib tools build: Correct bpf fixdep dependencies 2024-08-05 12:19:48 -03:00
memory-model kcsan: Add __data_racy documentation and module description 2024-07-15 15:44:40 -07:00
mm tools/mm: introduce a tool to assess swap entry allocation for thp_swapout 2024-07-10 12:14:51 -07:00
net/ynl tools: ynl: use ident name for Family, too. 2024-07-03 19:13:20 -07:00
objtool - 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
pci
pcmcia
perf perf sched timehist: Add --prio option 2024-09-03 15:45:59 -03:00
power turbostat release 2024.07.26 2024-07-28 10:52:15 -07:00
rcu tools/rcu: Add rcu-updaters.sh script 2024-06-06 11:44:42 -07:00
scripts
sound ASoC: dapm-graph: new tool to visualize DAPM state 2024-04-21 09:58:17 +09:00
spi
testing Including fixes from wireless and netfilter 2024-08-15 10:35:20 -07:00
thermal
time
tracing rtla/osnoise: Prevent NULL dereference in error handling 2024-08-09 13:03:15 -04:00
usb
verification tools/verification: Use pkg-config in lib_setup of Makefile.config 2024-07-17 13:14:51 -07:00
virtio tools/virtio: creating pipe assertion in vringh_test 2024-07-04 11:00:31 -04:00
wmi
workqueue workqueue: remove unnecessary import and function in wq_monitor.py 2024-03-25 10:11:32 -10:00
writeback writeback: add wb_monitor.py script to monitor writeback info on bdi 2024-05-05 17:53:51 -07:00
Makefile tools/Makefile: remove cgroup target 2024-03-26 11:07:21 -07:00