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tracing: Use CONFIG_PREEMPTION

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CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by
CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same
functionality which today depends on CONFIG_PREEMPT.

Switch the conditionals in the tracer over to CONFIG_PREEMPTION.

This is the first step to make the tracer work on RT. The other small
tweaks are submitted separately.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20190726212124.409766323@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner
2019-07-26 23:19:40 +02:00
committed by Ingo Molnar
parent 27972765bd
commit 30c937043b
4 changed files with 6 additions and 6 deletions
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2
kernel/trace/ftrace.c
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@ -2814,7 +2814,7 @@ int ftrace_shutdown(struct ftrace_ops *ops, int command)
* synchornize_rcu_tasks() will wait for those tasks to
* execute and either schedule voluntarily or enter user space.
*/
if (IS_ENABLED(CONFIG_PREEMPT))
if (IS_ENABLED(CONFIG_PREEMPTION))
synchronize_rcu_tasks();
free_ops: