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SubjectRe: [PATCH v10 2/3] tracepoint: Make rcuidle tracepoint callers use SRCU
On Fri, Jul 13, 2018 at 02:55:46PM -0700, Joel Fernandes wrote:
> + /* keep srcu and sched-rcu usage consistent */ \
> + preempt_disable_notrace(); \
> + \
> + /* \
> + * For rcuidle callers, use srcu since sched-rcu \
> + * doesn't work from the idle path. \
> + */ \
> + if (rcuidle) \
> + idx = srcu_read_lock_notrace(&tracepoint_srcu); \
> + else \
> + rcu_read_lock_sched_notrace(); \

That else is completely superfluous. rcu_read_lock_sched_notrace() :=
prempt_disable_notrace().

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