On Mon, May 08, 2023 at 09:43:55PM +0200, Thomas Gleixner wrote:

> +static inline void cpuhp_ap_update_sync_state(enum cpuhp_sync_state state)
> +{
> +     atomic_t *st = this_cpu_ptr(&cpuhp_state.ap_sync_state);
> +     int sync = atomic_read(st);
> +
> +     while (!atomic_try_cmpxchg(st, &sync, state));
> +}

Why isn't:

        atomic_set(st, state);

any good?


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