Messages in this thread | | | Subject | Re: [PATCH v2] perf: Store active software events in a hashlist | From | Eric Dumazet <> | Date | Thu, 08 Apr 2010 22:04:41 +0200 |
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Le jeudi 08 avril 2010 à 21:39 +0200, Frederic Weisbecker a écrit :
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> @@ -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)
> + 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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