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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2013-03-14 18:13:45 +0100
committerSteven Rostedt <rostedt@goodmis.org>2013-03-15 05:36:09 +0100
commit8aacf017b065a805d27467843490c976835eb4a5 (patch)
tree3e3ee23502cf2cc6d02baa1f7625b1ef16611eda /drivers/s390
parenttracing: Add function-trace option to disable function tracing of latency tra... (diff)
downloadlinux-8aacf017b065a805d27467843490c976835eb4a5.tar.xz
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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 'drivers/s390')
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