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SubjectRe: [PATCH v2] cpu/hotplug: Do not bail-out in DYING/STARTING sections
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Vincent,

On Mon, May 23 2022 at 17:05, Vincent Donnefort wrote:
> +static int _cpuhp_invoke_callback_range(bool bringup,
> + unsigned int cpu,
> + struct cpuhp_cpu_state *st,
> + enum cpuhp_state target,
> + bool nofail)
> {
> enum cpuhp_state state;
> - int err = 0;
> + int ret = 0;
>
> while (cpuhp_next_state(bringup, &state, st, target)) {
> + int err;
> +
> err = cpuhp_invoke_callback(cpu, state, bringup, NULL, NULL);
> - if (err)
> + if (!err)
> + continue;
> +
> + if (nofail) {
> + pr_warn("CPU %u %s state %s (%d) failed (%d)\n",
> + cpu, bringup ? "UP" : "DOWN",
> + cpuhp_get_step(st->state)->name,
> + st->state, err);
> + ret = -1;

I have a hard time to map this to the changelog:

> those sections. In that case, there's nothing the hotplug machinery can do,
> so let's just proceed and log the failures.

That's still returning an error code at the end. Confused.

Thanks,

tglx

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