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perf/x86: Vectorize cpuc->kfree_on_online

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Make the cpuc->kfree_on_online a vector to accommodate
more than one entry and add the second entry to be
used by a later patch.

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Maria Dimakopoulou <maria.n.dimakopoulou@gmail.com>
Cc: bp@alien8.de
Cc: jolsa@redhat.com
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1416251225-17721-3-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Stephane Eranian
2014-11-17 20:06:54 +01:00
committed by Ingo Molnar
parent 9a5e3fb52a
commit 9041346431
4 changed files with 19 additions and 6 deletions
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10
arch/x86/kernel/cpu/perf_event.c
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@@ -1373,11 +1373,12 @@ x86_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
{
unsigned int cpu = (long)hcpu;
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
int ret = NOTIFY_OK;
int i, ret = NOTIFY_OK;
switch (action & ~CPU_TASKS_FROZEN) {
case CPU_UP_PREPARE:
cpuc->kfree_on_online = NULL;
for (i = 0 ; i < X86_PERF_KFREE_MAX; i++)
cpuc->kfree_on_online[i] = NULL;
if (x86_pmu.cpu_prepare)
ret = x86_pmu.cpu_prepare(cpu);
break;
@@ -1388,7 +1389,10 @@ x86_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
break;
case CPU_ONLINE:
kfree(cpuc->kfree_on_online);
for (i = 0 ; i < X86_PERF_KFREE_MAX; i++) {
kfree(cpuc->kfree_on_online[i]);
cpuc->kfree_on_online[i] = NULL;
}
break;
case CPU_DYING: