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| author |   Peter Zijlstra <peterz@infradead.org> | 2021-03-02 08:02:43 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2021-03-06 13:00:22 +0100 |
| commit | d43f17a1da25373580ebb466de7d0641acbf6fd6 (patch) | |
| tree | 3a07d13a91dd21c21362374b6653ed6bd79302c4 /kernel/smp.c | |
| parent | smp: Inline on_each_cpu_cond() and on_each_cpu() (diff) | |
| download | linux-dev-d43f17a1da25373580ebb466de7d0641acbf6fd6.tar.xz linux-dev-d43f17a1da25373580ebb466de7d0641acbf6fd6.zip | |
smp: Micro-optimize smp_call_function_many_cond()
Call the generic send_call_function_single_ipi() function, which
will avoid the IPI when @last_cpu is idle.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/smp.c')
| -rw-r--r-- | kernel/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index b6375d775e93..af0d51da84a2 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -694,7 +694,7 @@ static void smp_call_function_many_cond(const struct cpumask *mask, * provided mask. */ if (nr_cpus == 1) - arch_send_call_function_single_ipi(last_cpu); + send_call_function_single_ipi(last_cpu); else if (likely(nr_cpus > 1)) arch_send_call_function_ipi_mask(cfd->cpumask_ipi); } |