Commit 5fe7d45f authored Nov 28, 2016 by Joel Fernandes

UPSTREAM: 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.

Bug: b/33184060

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>

parent af80d7c3

kernel/trace/trace.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -890,6 +890,7 @@ 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
		};