diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-05-26 18:11:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-05-28 10:54:15 +0200 |
| commit | b2a02fc43a1f40ef4eb2fb2b06357382608d4d84 (patch) | |
| tree | beedd3ab17cd9da7d49948aff6e1d82fe535dc81 /kernel/sched/sched.h | |
| parent | smp: Move irq_work_run() out of flush_smp_call_function_queue() (diff) | |
| download | linux-b2a02fc43a1f40ef4eb2fb2b06357382608d4d84.tar.xz linux-b2a02fc43a1f40ef4eb2fb2b06357382608d4d84.zip | |
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
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 3c163cb5493f..75b062999c43 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1506,11 +1506,12 @@ static inline void unregister_sched_domain_sysctl(void) } #endif -#else +extern void flush_smp_call_function_from_idle(void); +#else /* !CONFIG_SMP: */ +static inline void flush_smp_call_function_from_idle(void) { } static inline void sched_ttwu_pending(void) { } - -#endif /* CONFIG_SMP */ +#endif #include "stats.h" #include "autogroup.h" |