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author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-10 15:55:59 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-06-10 16:55:27 +0200 |
commit | f7b7c26e01e51fe46097e11f179dc71ce7950084 (patch) | |
tree | 4a542e0c386ceebc306886604337dbe6db50c413 /tools/perf/builtin-record.c | |
parent | perf_counter tools: Small frequency related fixes (diff) | |
download | linux-f7b7c26e01e51fe46097e11f179dc71ce7950084.tar.xz linux-f7b7c26e01e51fe46097e11f179dc71ce7950084.zip |
perf_counter tools: Propagate signals properly
Currently report and stat catch SIGINT (and others) without altering
their exit state. This means that things like:
while :; do perf stat ./foo ; done
Loops become hard-to-interrupt, because bash never sees perf terminate
due to interruption. Fix this.
Signed-off-by: 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>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r-- | tools/perf/builtin-record.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a5698add2fcb..c10553c3460f 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -169,10 +169,21 @@ static void mmap_read(struct mmap_data *md) } static volatile int done = 0; +static volatile int signr = -1; static void sig_handler(int sig) { done = 1; + signr = sig; +} + +static void sig_atexit(void) +{ + if (signr == -1) + return; + + signal(signr, SIG_DFL); + kill(getpid(), signr); } static void pid_synthesize_comm_event(pid_t pid, int full) @@ -459,6 +470,7 @@ static int __cmd_record(int argc, const char **argv) } else for (i = 0; i < nr_cpus; i++) open_counters(i, target_pid); + atexit(sig_atexit); signal(SIGCHLD, sig_handler); signal(SIGINT, sig_handler); |