diff options
| author | Joel Fernandes <joelaf@google.com> | 2016-11-28 14:35:23 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-11-29 18:02:59 +0100 |
| commit | 80ec3552107ac16a836dbff4cf3c23fdd3256ee3 (patch) | |
| tree | 17e749f1f40fb67e5ce4ff41b707108919e27408 /kernel/trace/trace.c | |
| parent | 948a5312f41658f7b76a598a139ef1f4dea09ca9 (diff) | |
| download | lwn-80ec3552107ac16a836dbff4cf3c23fdd3256ee3.tar.gz lwn-80ec3552107ac16a836dbff4cf3c23fdd3256ee3.zip | |
trace: Add an option for boot clock as trace clock
Unlike monotonic clock, boot clock as a trace clock will account for
time spent in suspend useful for tracing suspend/resume. This uses
earlier introduced infrastructure for using the fast boot clock.
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Link: http://lkml.kernel.org/r/1480372524-15181-7-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8696ce6bf2f6..f7b64db285df 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1125,6 +1125,7 @@ static struct { { trace_clock, "perf", 1 }, { ktime_get_mono_fast_ns, "mono", 1 }, { ktime_get_raw_fast_ns, "mono_raw", 1 }, + { ktime_get_boot_fast_ns, "boot", 1 }, ARCH_TRACE_CLOCKS }; |