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Diffstat (limited to 'arch/sh/kernel/perf_event.c')
-rw-r--r--arch/sh/kernel/perf_event.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c
index 7ff0943e7a0..81b6de41ae5 100644
--- a/arch/sh/kernel/perf_event.c
+++ b/arch/sh/kernel/perf_event.c
@@ -275,13 +275,30 @@ const struct pmu *hw_perf_event_init(struct perf_event *event)
return &pmu;
}
-void hw_perf_event_setup(int cpu)
+static void sh_pmu_setup(int cpu)
{
struct cpu_hw_events *cpuhw = &per_cpu(cpu_hw_events, cpu);
memset(cpuhw, 0, sizeof(struct cpu_hw_events));
}
+static int __cpuinit
+sh_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (long)hcpu;
+
+ switch (action & ~CPU_TASKS_FROZEN) {
+ case CPU_UP_PREPARE:
+ sh_pmu_setup(cpu);
+ break;
+
+ default:
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
void hw_perf_enable(void)
{
if (!sh_pmu_initialized())
@@ -298,7 +315,7 @@ void hw_perf_disable(void)
sh_pmu->disable_all();
}
-int register_sh_pmu(struct sh_pmu *pmu)
+int __cpuinit register_sh_pmu(struct sh_pmu *pmu)
{
if (sh_pmu)
return -EBUSY;
@@ -308,5 +325,6 @@ int register_sh_pmu(struct sh_pmu *pmu)
WARN_ON(pmu->num_events > MAX_HWEVENTS);
+ perf_cpu_notifier(sh_pmu_notifier);
return 0;
}