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authorIngo Molnar <mingo@elte.hu>2009-06-03 22:19:36 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-03 23:39:51 +0200
commit128f048f0f0d2a477ad2555e7acd2ad15a1b6061 (patch)
tree5927a26da343af2189e47b497eec38680f19294f /arch/x86
parent233f0b95ca3a0d1dcbd70bc7e519069a8e10d23e (diff)
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')
-rw-r--r--arch/x86/kernel/cpu/perf_counter.c2
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 | \