Commit 06db0b21 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar

perf: Remove fragile swevent hlist optimization

Currently we only allocate a single cpu hashtable for per-cpu
swevents; do away with this optimization for it is fragile in the face
of things like perf_pmu_migrate_context().

The easiest thing is to make sure all CPUs are consistent wrt state.
Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130913111447.GN31370@twins.programming.kicks-ass.netSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent d5b5f391
......@@ -5680,11 +5680,6 @@ static void swevent_hlist_put(struct perf_event *event)
{
int cpu;
if (event->cpu != -1) {
swevent_hlist_put_cpu(event, event->cpu);
return;
}
for_each_possible_cpu(cpu)
swevent_hlist_put_cpu(event, cpu);
}
......@@ -5718,9 +5713,6 @@ static int swevent_hlist_get(struct perf_event *event)
int err;
int cpu, failed_cpu;
if (event->cpu != -1)
return swevent_hlist_get_cpu(event, event->cpu);
get_online_cpus();
for_each_possible_cpu(cpu) {
err = swevent_hlist_get_cpu(event, cpu);
......
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