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(parent: c850ed3) | patch
tracing: Have hwlat trace migrate across tracing_cpumask CPUs
authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>
Fri, 15 Jul 2016 19:48:56 +0000 (15:48 -0400)
committerSteven Rostedt <rostedt@goodmis.org>
Fri, 2 Sep 2016 16:47:54 +0000 (12:47 -0400)
commit0330f7aa8ee63d0c435c0cb4e47ea06235ee4b7f
tree67fa852b52a5c4c09ec74f6ba38c7b44f14af180tree | snapshot (tar.gz zip)
parentc850ed38db5f46441565174ef57c271124cce568commit | diff
tracing: Have hwlat trace migrate across tracing_cpumask CPUs

Instead of having the hwlat detector thread stay on one CPU, have it migrate
across all the CPUs specified by tracing_cpumask. If the user modifies the
thread's CPU affinity, the migration will stop until the next instance that
the tracer is instantiated. The migration happens at the end of each window
(period).

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Documentation/trace/hwlat_detector.txt diff | blob | blame | history
kernel/trace/trace_hwlat.c diff | blob | blame | history