On Mon, Aug 29, 2022 at 02:04:33PM +0200, Peter Zijlstra wrote:
> On Mon, Aug 29, 2022 at 05:03:47PM +0530, Ravi Bangoria wrote:
> > @@ -12598,6 +12590,7 @@ EXPORT_SYMBOL_GPL(perf_event_create_kernel_counter);
> >
> > void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu)
> > {
> > +#if 0 // XXX buggered - cpu hotplug, who cares
> > struct perf_event_context *src_ctx;
> > struct perf_event_context *dst_ctx;
> > struct perf_event *event, *tmp;
> > @@ -12658,6 +12651,7 @@ void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu)
> > }
> > mutex_unlock(&dst_ctx->mutex);
> > mutex_unlock(&src_ctx->mutex);
> > +#endif
> > }
> > EXPORT_SYMBOL_GPL(perf_pmu_migrate_context);
> >
>
> Note to self; fix this :-) I'll see if I have time for that later today.
Urgh, while going through that it appears the whole refcounting thing
isn't fully done either.
