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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-09-09 10:04:47 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-20 19:53:57 +0200 |
| commit | a1792cdacaf5180e04e07811e220c4a3b4a9c33e (patch) | |
| tree | 1779eb1c8c047e30101f4799f62301339a7aaf2c | |
| parent | 611a546bec3e1af2a87af0862398fc711dc47aef (diff) | |
| download | linux-3.10-a1792cdacaf5180e04e07811e220c4a3b4a9c33e.tar.gz linux-3.10-a1792cdacaf5180e04e07811e220c4a3b4a9c33e.tar.bz2 linux-3.10-a1792cdacaf5180e04e07811e220c4a3b4a9c33e.zip | |
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>
| -rw-r--r-- | arch/x86/kernel/cpu/perf_counter.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c index dbdf712fae9..a6c8b27553c 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_counter.c @@ -924,6 +924,8 @@ static int __hw_perf_counter_init(struct perf_counter *counter) if (err) return err; + counter->destroy = hw_perf_counter_destroy; + /* * Generate PMC IRQs: * (keep 'enabled' bit clear for now) @@ -953,8 +955,6 @@ static int __hw_perf_counter_init(struct perf_counter *counter) return -EOPNOTSUPP; } - counter->destroy = hw_perf_counter_destroy; - /* * Raw event type provide the config in the event structure */ @@ -2107,8 +2107,11 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter) int err; err = __hw_perf_counter_init(counter); - if (err) + if (err) { + if (counter->destroy) + counter->destroy(counter); return ERR_PTR(err); + } return &pmu; } |