[PATCH 0/4] perf bench messaging: Kill child processes when exit abnormally in process mode

[Yang Jihong]

If perf bench messaging in process mode exits abnormally, the forked child
processes does not exit.

The test result is as follows:

  # perf bench sched messaging -l 1000000 -g 1 &
  [4] 553
  # Running 'sched/messaging' benchmark:
  # kill -15 533
  # ps -ef | grep perf
  root         425     371  0 09:11 pts/0    00:00:00 perf bench sched messaging -l 1000000 -g 1
  root         426     425 17 09:11 pts/0    00:01:56 perf bench sched messaging -l 1000000 -g 1
  root         427     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         428     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         429     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         430     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         431     425 17 09:11 pts/0    00:01:56 perf bench sched messaging -l 1000000 -g 1
  root         432     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         433     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         434     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         435     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         436     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         437     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         438     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         439     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         440     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         441     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         442     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         443     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         444     425 17 09:11 pts/0    00:01:54 perf bench sched messaging -l 1000000 -g 1
  root         445     425 17 09:11 pts/0    00:01:55 perf bench sched messaging -l 1000000 -g 1
  root         446     425 16 09:11 pts/0    00:01:50 perf bench sched messaging -l 1000000 -g 1
  root         447     425 16 09:11 pts/0    00:01:49 perf bench sched messaging -l 1000000 -g 1
  root         448     425 16 09:11 pts/0    00:01:50 perf bench sched messaging -l 1000000 -g 1
  root         449     425 16 09:11 pts/0    00:01:49 perf bench sched messaging -l 1000000 -g 1
  root         450     425 16 09:11 pts/0    00:01:50 perf bench sched messaging -l 1000000 -g 1
  root         451     425 16 09:11 pts/0    00:01:50 perf bench sched messaging -l 1000000 -g 1
  root         452     425 16 09:11 pts/0    00:01:50 perf bench sched messaging -l 1000000 -g 1
  root         453     425 16 09:11 pts/0    00:01:49 perf bench sched messaging -l 1000000 -g 1
  root         454     425 16 09:11 pts/0    00:01:49 perf bench sched messaging -l 1000000 -g 1
<SNIP>

Capture signals SIGINT and SIGTERM to kill child processes in signal handler

Yang Jihong (4):
  perf bench messaging: Fix coding style issues for sched-messaging
  perf bench messaging: Factor out create_worker()
  perf bench messaging: Store chlid process pid when creating worker for
    process mode
  perf bench messaging: Kill child processes when exit abnormally in
    process mode

 tools/perf/bench/sched-messaging.c | 102 ++++++++++++++++++-----------
 1 file changed, 64 insertions(+), 38 deletions(-)

-- 
2.34.1