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2d6914cd59
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Jiri Olsa 2d6914cd59 perf daemon: Add 'signal' command 
Allow the 'perf daemon' to send SIGUSR2 to all running sessions or just
to a specific session.

Example:

  # cat ~/.perfconfig
  [daemon]
  base=/opt/perfdata

  [session-cycles]
  run = -m 10M -e cycles --overwrite --switch-output -a

  [session-sched]
  run = -m 20M -e sched:* --overwrite --switch-output -a

Start the daemon:

  # perf daemon start

Send signal to all running sessions:

  # perf daemon signal
  signal 12 sent to session 'cycles [773738]'
  signal 12 sent to session 'sched [773739]'

Or to specific one:

  # perf daemon signal --session sched
  signal 12 sent to session 'sched [773739]'

And verify signals were delivered and perf.data dumped:

  # cat /opt/perfdata/session-cycles/output
  rounding mmap pages size to 32M (8192 pages)
  [ perf record: dump data: Woken up 1 times ]
  [ perf record: Dump perf.data.2021010220382490 ]

  # car /opt/perfdata/session-sched/output
  rounding mmap pages size to 32M (8192 pages)
  [ perf record: dump data: Woken up 1 times ]
  [ perf record: Dump perf.data.2021010220382489 ]
  [ perf record: dump data: Woken up 1 times ]
  [ perf record: Dump perf.data.2021010220393745 ]

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: https://lore.kernel.org/r/20210208200908.1019149-12-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-11 10:02:54 -03:00
..
accounting
arch perf powerpc: Support exposing Performance Monitor Counter SPRs as part of extended regs 2021-02-08 16:25:00 -03:00
bootconfig tools/bootconfig: Add tracing_on support to helper scripts 2021-01-14 10:32:20 -05:00
bpf Merge remote-tracking branch 'torvalds/master' into perf/core 2021-01-20 14:35:31 -03:00
build perf cs-etm: Update ARM's CoreSight hardware tracing OpenCSD library to v1.0.0 2021-01-20 14:34:20 -03:00
cgroup blk-iocost: update iocost_monitor.py 2020-09-01 19:38:33 -06:00
debugging docs: Update documentation to reflect what TAINT_CPU_OUT_OF_SPEC means 2020-12-08 10:53:58 -07:00
edid
firewire
firmware
gpio tools: gpio: fix %llu warning in gpio-watch.c 2021-01-18 10:05:35 +01:00
hv
iio iio: add IIO_MOD_O2 modifier 2020-08-22 10:53:12 +01:00
include tools headers uapi: Update tools's copy of linux/perf_event.h 2021-02-08 16:25:00 -03:00
io_uring tools/io_uring: fix compile breakage 2020-09-21 07:50:58 -06:00
kvm/kvm_stat tools/kvm_stat: Exempt time-based counters 2020-12-11 19:18:51 -05:00
laptop
leds
lib Merge remote-tracking branch 'torvalds/master' into perf/core 2021-01-27 16:48:04 -03:00
memory-model tools/memory-model: Label MP tests' producers and consumers 2020-11-06 17:25:17 -08:00
objtool objtool: Don't fail on missing symbol table 2021-01-21 15:49:58 -06:00
pci
pcmcia
perf perf daemon: Add 'signal' command 2021-02-11 10:02:54 -03:00
power tools/power/x86/intel-speed-select: Set higher of cpuinfo_max_freq or base_frequency 2021-01-04 15:54:27 +01:00
scripts perf build: Support build BPF skeletons with perf 2021-01-15 15:49:07 -03:00
spi
testing Networking fixes for 5.11-rc6, including fixes from can, xfrm, wireless, 2021-01-28 15:24:43 -08:00
thermal/tmon
time
usb tools: usb: move to tools buildsystem 2020-08-19 14:11:44 +02:00
virtio tools/virtio: add barrier for aarch64 2020-12-18 16:14:30 -05:00
vm mm: Add PG_arch_2 page flag 2020-09-04 12:46:06 +01:00
wmi
Makefile