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SubjectRe: [PATCH v2] perf: Store active software events in a hashlist
On Thu, Apr 08, 2010 at 10:04:41PM +0200, Eric Dumazet wrote:
> Le jeudi 08 avril 2010 à 21:39 +0200, Frederic Weisbecker a écrit :
>
> ...
>
> > @@ -5401,6 +5507,16 @@ static void __cpuinit perf_event_init_cpu(int cpu)
> > spin_lock(&perf_resource_lock);
> > cpuctx->max_pertask = perf_max_events - perf_reserved_percpu;
> > spin_unlock(&perf_resource_lock);
> > +
> > + mutex_lock(&cpuctx->hlist_mutex);
> > + if (&cpuctx->hlist_refcount > 0) {
>
>
> if (cpuctx->hlist_refcount > 0)


Doh! Thanks, will fix.


>
> > + struct swevent_hlist *hlist;
> > +
> > + hlist = kzalloc(sizeof(*hlist), GFP_KERNEL);
> > + WARN_ON_ONCE(!hlist);
> > + rcu_assign_pointer(cpuctx->swevent_hlist, hlist);
> > + }
> > + mutex_unlock(&cpuctx->hlist_mutex);
> > }
>
>
>

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