summaryrefslogtreecommitdiffstats
path: root/kernel/trace
diff options
context:
space:
mode:
authorJoel Fernandes <joelaf@google.com>2016-11-28 23:35:23 +0100
committerThomas Gleixner <tglx@linutronix.de>2016-11-29 18:02:59 +0100
commit80ec3552107ac16a836dbff4cf3c23fdd3256ee3 (patch)
tree17e749f1f40fb67e5ce4ff41b707108919e27408 /kernel/trace
parenttimekeeping: Add a fast and NMI safe boot clock (diff)
downloadlinux-80ec3552107ac16a836dbff4cf3c23fdd3256ee3.tar.xz
linux-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')
-rw-r--r--kernel/trace/trace.c1
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
};