]> www.infradead.org Git - users/hch/block.git/commit
perf/arm-cmn: Avoid placing cpumask on the stack
authorDawei Li <dawei.li@shingroup.cn>
Wed, 3 Apr 2024 15:59:43 +0000 (23:59 +0800)
committerWill Deacon <will@kernel.org>
Tue, 9 Apr 2024 15:47:15 +0000 (16:47 +0100)
commit60c73240f304a654b66811f7f56a3325201f46de
tree18b3b391a9f0600e7c3b7d208a943c6fbc4f4cf6
parent2f6589df124ee8cbe1772353e533c3fcc4319a24
perf/arm-cmn: Avoid placing cpumask on the stack

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/20240403155950.2068109-4-dawei.li@shingroup.cn
Signed-off-by: Will Deacon <will@kernel.org>
drivers/perf/arm-cmn.c