Messages in this thread | | | Date | Tue, 21 Dec 2021 14:13:17 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 15/17] kernel/cpu: add num_active_cpu counter |
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On Sat, Dec 18, 2021 at 01:20:11PM -0800, Yury Norov wrote: > Similarly to the online cpus, the cpu_active_mask is actively used > in the kernel. This patch adds a counter for active cpus, so that > users that call num_active_cpus() would know the result immediately, > instead of calling the bitmap_weight for the mask.
Who cares about num_active_cpus() ?
> +EXPORT_SYMBOL(set_cpu_active);
NAK, this should *never*ever* be used from a module.
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