Commit-ID: 598adc5c9c1cfd3f154f6d9df72b38eda63e306e Gitweb: http://git.kernel.org/tip/598adc5c9c1cfd3f154f6d9df72b38eda63e306e Author: Davidlohr Bueso <d...@stgolabs.net> AuthorDate: Fri, 8 May 2015 11:38:00 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Fri, 8 May 2015 16:24:02 -0300
perf bench futex: Handle spurious wakeups Wrap futex_wait around a loop and catch for EINTR. Either a spurious wakeup occurred or a signal interrupted is, either way we need to block again. Signed-off-by: Davidlohr Bueso <dbu...@suse.de> Cc: Davidlohr Bueso <dbu...@suse.de> Link: http://lkml.kernel.org/r/1431110280-20231-2-git-send-email-d...@stgolabs.net Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/bench/futex-wake.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c index 929f762..e5e41d3 100644 --- a/tools/perf/bench/futex-wake.c +++ b/tools/perf/bench/futex-wake.c @@ -60,7 +60,12 @@ static void *workerfn(void *arg __maybe_unused) pthread_cond_wait(&thread_worker, &thread_lock); pthread_mutex_unlock(&thread_lock); - futex_wait(&futex1, 0, NULL, futex_flag); + while (1) { + if (futex_wait(&futex1, 0, NULL, futex_flag) != EINTR) + break; + } + + pthread_exit(NULL); return NULL; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
