Re: [RFC PATCH 03/30] Lazy percpu counters

Peter Zijlstra
2022-09-01T06:51:44Z

On Tue, Aug 30, 2022 at 02:48:52PM -0700, Suren Baghdasaryan wrote:
> +static void lazy_percpu_counter_switch_to_pcpu(struct raw_lazy_percpu_counter *c)
> +{
> + u64 __percpu *pcpu_v = alloc_percpu_gfp(u64, GFP_ATOMIC|__GFP_NOWARN);

Realize that this is incorrect when used under a raw_spinlock_t.