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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2013-03-14 13:13:45 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-03-15 00:36:09 -0400 |
| commit | 8aacf017b065a805d27467843490c976835eb4a5 (patch) | |
| tree | 3e3ee23502cf2cc6d02baa1f7625b1ef16611eda /include/linux/trace_clock.h | |
| parent | 328df4759c03e2c3e7429cc6cb0e180c38f32063 (diff) | |
| download | op-kernel-dev-8aacf017b065a805d27467843490c976835eb4a5.zip op-kernel-dev-8aacf017b065a805d27467843490c976835eb4a5.tar.gz | |
tracing: Add "uptime" trace clock that uses jiffies
Add a simple trace clock called "uptime" for those that are
interested in the uptime of the trace. It uses jiffies as that's
the safest method, as other uptime clocks grab seq locks, which could
cause a deadlock if taken from an event or function tracer.
Requested-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/trace_clock.h')
| -rw-r--r-- | include/linux/trace_clock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/trace_clock.h b/include/linux/trace_clock.h index d563f37..1d7ca27 100644 --- a/include/linux/trace_clock.h +++ b/include/linux/trace_clock.h @@ -16,6 +16,7 @@ extern u64 notrace trace_clock_local(void); extern u64 notrace trace_clock(void); +extern u64 notrace trace_clock_jiffies(void); extern u64 notrace trace_clock_global(void); extern u64 notrace trace_clock_counter(void); |
