smp: Optimize send_call_function_single_ipi() (b2a02fc4) · Commits · CodeLinaro / la / kernel / msm

Commit b2a02fc4 authored 4 years ago by Peter Zijlstra Committed by Ingo Molnar 4 years ago

smp: Optimize send_call_function_single_ipi()


Just like the ttwu_queue_remote() IPI, make use of _TIF_POLLING_NRFLAG
to avoid sending IPIs to idle CPUs.

[ mingo: Fix UP build bug. ]

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200526161907.953304789@infradead.org

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