diff options
| author | David Ahern <dsahern@gmail.com> | 2013-08-07 21:56:38 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-08-12 10:31:04 -0300 |
| commit | 70f7b4a7f3f9a46807b644aa0fcfa7daa0d553e4 (patch) | |
| tree | beaedc789a7aef3c98b1625ec9dc02eeec973c08 /tools/perf/perf.h | |
| parent | 0a3d23a2568ed5e73bd4fb532dc672fa9f03b1f1 (diff) | |
perf kvm: Option to print events that exceed a duration
This is useful to spot high latency blips. It is normal for HLT reasons
to have long exit times, so strip those from the duration check.
v2: changed threshold to duration per acme's request
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1375926999-75129-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/perf.h')
| -rw-r--r-- | tools/perf/perf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 32bd102c32b..cf20187eee0 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -125,6 +125,9 @@ #ifndef NSEC_PER_SEC # define NSEC_PER_SEC 1000000000ULL #endif +#ifndef NSEC_PER_USEC +# define NSEC_PER_USEC 1000ULL +#endif static inline unsigned long long rdclock(void) { |