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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-04-12 00:25:08 +0200
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-04-17 21:21:19 +0200
commitb980b117c9ff17226937128a15692a18c9a28ed6 (patch)
treef4f1d2911131998ea103c58846b516ce4c039bbf /kernel/trace/trace.h
parentftrace: Fix indexing of t_hash_start() from t_next() (diff)
downloadlinux-b980b117c9ff17226937128a15692a18c9a28ed6.tar.xz
linux-b980b117c9ff17226937128a15692a18c9a28ed6.zip
tracing: Have the trace_event benchmark thread call cond_resched_rcu_qs()
The trace_event benchmark thread runs in kernel space in an infinite loop while also calling cond_resched() in case anything else wants to schedule in. Unfortunately, on a PREEMPT kernel, that makes it a nop, in which case, this will never voluntarily schedule. That will cause synchronize_rcu_tasks() to forever block on this thread, while it is running. This is exactly what cond_resched_rcu_qs() is for. Use that instead. Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
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