perf_counter: x86: Fix PMU resource leak
Dave noticed that we leak the PMU resource reservations when we
fail the hardware counter init.
Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: David Miller <davem@davemloft.net>
LKML-Reference: <1252483487.7746.164.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index dbdf712..a6c8b27 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -924,6 +924,8 @@
if (err)
return err;
+ counter->destroy = hw_perf_counter_destroy;
+
/*
* Generate PMC IRQs:
* (keep 'enabled' bit clear for now)
@@ -953,8 +955,6 @@
return -EOPNOTSUPP;
}
- counter->destroy = hw_perf_counter_destroy;
-
/*
* Raw event type provide the config in the event structure
*/
@@ -2107,8 +2107,11 @@
int err;
err = __hw_perf_counter_init(counter);
- if (err)
+ if (err) {
+ if (counter->destroy)
+ counter->destroy(counter);
return ERR_PTR(err);
+ }
return &pmu;
}
