perf/arm_cspmu: Avoid placing cpumask on the stack

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In general it's preferable to avoid placing cpumasks on the stack, as
for large values of NR_CPUS these can consume significant amounts of
stack space and make stack overflows more likely.

Use cpumask_any_and_but() to avoid the need for a temporary cpumask on
the stack.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Dawei Li <dawei.li@shingroup.cn>
Link: https://lore.kernel.org/r/20240403155950.2068109-5-dawei.li@shingroup.cn
Signed-off-by: Will Deacon <will@kernel.org>

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Dawei Li 2024-04-03 23:59:44 +08:00 • committed by Will Deacon

parent 60c73240f3

commit b5310fa1fe

1 changed files with 3 additions and 5 deletions

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drivers/perf/arm_cspmu/arm_cspmu.c

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