[PATCH v3 07/10] perf/hisi_pcie: Avoid placing cpumask on the stack

Jonathan Cameron Jonathan.Cameron at Huawei.com
Fri Apr 5 02:54:22 PDT 2024


On Wed, 3 Apr 2024 23:59:47 +0800
Dawei Li <dawei.li at shingroup.cn> wrote:

> 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 at arm.com>
> Reviewed-by: Mark Rutland <mark.rutland at arm.com>
> Signed-off-by: Dawei Li <dawei.li at shingroup.cn>
Acked-by: Jonathan Cameron <Jonathan.Cameron at huawei.com>



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