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linux/tools/perf/config/feature-checks/test-timerfd.c

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perf kvm: Disable live command if timerfd is not supported If the OS does not have timerfd support (e.g., older OS'es like RHEL5) disable perf kvm stat live. Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1383064996-20933-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-29 10:43:16 -06:00
/*
* test for timerfd functions used by perf-kvm-stat-live
*/
#include <sys/timerfd.h>
int main(void)
{
struct itimerspec new_value;
int fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
if (fd < 0)
return 1;
if (timerfd_settime(fd, 0, &new_value, NULL) != 0)
return 1;
return 0;
}
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