* [tip: x86/mm] smp: Micro-optimize smp_call_function_many_cond()
@ 2021-03-06 12:12 tip-bot2 for Peter Zijlstra
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot2 for Peter Zijlstra @ 2021-03-06 12:12 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Zijlstra, Ingo Molnar, linux-kernel, x86
The following commit has been merged into the x86/mm branch of tip:
Commit-ID: d43f17a1da25373580ebb466de7d0641acbf6fd6
Gitweb: https://git.kernel.org/tip/d43f17a1da25373580ebb466de7d0641acbf6fd6
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Tue, 02 Mar 2021 08:02:43 +01:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Sat, 06 Mar 2021 13:00:22 +01:00
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>
---
kernel/smp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/smp.c b/kernel/smp.c
index b6375d7..af0d51d 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);
}
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [tip: x86/mm] smp: Micro-optimize smp_call_function_many_cond()
@ 2021-03-02 9:54 tip-bot2 for Ingo Molnar
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot2 for Ingo Molnar @ 2021-03-02 9:54 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Zijlstra, Ingo Molnar, linux-kernel, x86
The following commit has been merged into the x86/mm branch of tip:
Commit-ID: dd75cba56151cb3b9dc7eac0221c9b1967f6ddb5
Gitweb: https://git.kernel.org/tip/dd75cba56151cb3b9dc7eac0221c9b1967f6ddb5
Author: Ingo Molnar <mingo@kernel.org>
AuthorDate: Tue, 02 Mar 2021 08:02:43 +01:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 02 Mar 2021 09:09:59 +01:00
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>
---
kernel/smp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/smp.c b/kernel/smp.c
index b6375d7..af0d51d 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);
}
^ permalink raw reply related [flat|nested] 2+ messages in thread
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