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| author | Ingo Molnar <mingo@elte.hu> | 2009-06-03 22:19:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-03 23:39:51 +0200 |
| commit | 128f048f0f0d2a477ad2555e7acd2ad15a1b6061 (patch) | |
| tree | 5927a26da343af2189e47b497eec38680f19294f /arch/x86/kernel/cpu/perf_counter.c | |
| parent | 233f0b95ca3a0d1dcbd70bc7e519069a8e10d23e (diff) | |
| download | kernel-crypto-128f048f0f0d2a477ad2555e7acd2ad15a1b6061.tar.gz kernel-crypto-128f048f0f0d2a477ad2555e7acd2ad15a1b6061.tar.xz kernel-crypto-128f048f0f0d2a477ad2555e7acd2ad15a1b6061.zip | |
perf_counter: Fix throttling lock-up
Throttling logic is broken and we can lock up with too small
hw sampling intervals.
Make the throttling code more robust: disable counters even
if we already disabled them.
( Also clean up whitespace damage i noticed while reading
various pieces of code related to throttling. )
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_counter.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_counter.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c index 12cc05ed9f4..8f53f3a7da2 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_counter.c @@ -91,7 +91,7 @@ static u64 intel_pmu_raw_event(u64 event) #define CORE_EVNTSEL_INV_MASK 0x00800000ULL #define CORE_EVNTSEL_COUNTER_MASK 0xFF000000ULL -#define CORE_EVNTSEL_MASK \ +#define CORE_EVNTSEL_MASK \ (CORE_EVNTSEL_EVENT_MASK | \ CORE_EVNTSEL_UNIT_MASK | \ CORE_EVNTSEL_EDGE_MASK | \ |