diff options
| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-09-02 15:07:49 -0400 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2010-09-03 08:05:18 +0200 |
| commit | de725dec9de7a7541996176d59cf8542365b8b0e (patch) | |
| tree | ca58fb67f6e6086733fb32b818fe80a111abac1f /arch | |
| parent | perf, x86: Fix accidentally ack'ing a second event on intel perf counter (diff) | |
| download | linux-dev-de725dec9de7a7541996176d59cf8542365b8b0e.tar.xz linux-dev-de725dec9de7a7541996176d59cf8542365b8b0e.zip | |
perf, x86: Fix handle_irq return values
Now that we rely on the number of handled overflows, ensure all
handle_irq implementations actually return the right number.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: peterz@infradead.org
Cc: robert.richter@amd.com
Cc: gorcunov@gmail.com
Cc: fweisbec@gmail.com
Cc: ying.huang@intel.com
Cc: ming.m.lin@intel.com
Cc: eranian@google.com
LKML-Reference: <1283454469-1909-4-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_p4.c | 2 |
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 1297bf15cb88..ee05c90012d2 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -713,6 +713,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs) struct cpu_hw_events *cpuc; int bit, loops; u64 status; + int handled = 0; perf_sample_data_init(&data, 0); @@ -743,12 +744,16 @@ again: /* * PEBS overflow sets bit 62 in the global status register */ - if (__test_and_clear_bit(62, (unsigned long *)&status)) + if (__test_and_clear_bit(62, (unsigned long *)&status)) { + handled++; x86_pmu.drain_pebs(regs); + } for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) { struct perf_event *event = cpuc->events[bit]; + handled++; + if (!test_bit(bit, cpuc->active_mask)) continue; @@ -770,7 +775,7 @@ again: done: intel_pmu_enable_all(0); - return 1; + return handled; } static struct event_constraint * diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c index 7e578e9cc58b..b560db3305be 100644 --- a/arch/x86/kernel/cpu/perf_event_p4.c +++ b/arch/x86/kernel/cpu/perf_event_p4.c @@ -692,7 +692,7 @@ static int p4_pmu_handle_irq(struct pt_regs *regs) inc_irq_stat(apic_perf_irqs); } - return handled > 0; + return handled; } /* |