diff options
| author | Yong Wang <yong.y.wang@linux.intel.com> | 2009-06-03 13:12:55 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-03 09:53:34 +0200 |
| commit | a32881066e58346f2901afe0ebdfbf0c562877e5 (patch) | |
| tree | acd28c9b659a3df0769eedb32127e9c6ad72def9 /arch/x86/kernel/cpu/perf_counter.c | |
| parent | addc2785ce92ff05da8edf18317b6b4719e10d9f (diff) | |
perf_counter/x86: Remove the IRQ (non-NMI) handling bits
Remove the IRQ (non-NMI) handling bits as NMI will be used always.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
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: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090603051255.GA2791@ywang-moblin2.bj.intel.com>
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 | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c index e16e8c13132..12cc05ed9f4 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_counter.c @@ -40,7 +40,7 @@ struct cpu_hw_counters { struct x86_pmu { const char *name; int version; - int (*handle_irq)(struct pt_regs *, int); + int (*handle_irq)(struct pt_regs *); void (*disable_all)(void); void (*enable_all)(void); void (*enable)(struct hw_perf_counter *, int); @@ -755,7 +755,7 @@ static void intel_pmu_reset(void) * This handler is triggered by the local APIC, so the APIC IRQ handling * rules apply: */ -static int intel_pmu_handle_irq(struct pt_regs *regs, int nmi) +static int intel_pmu_handle_irq(struct pt_regs *regs) { struct cpu_hw_counters *cpuc; struct cpu_hw_counters; @@ -794,7 +794,7 @@ again: if (!intel_pmu_save_and_restart(counter)) continue; - if (perf_counter_overflow(counter, nmi, regs, 0)) + if (perf_counter_overflow(counter, 1, regs, 0)) intel_pmu_disable_counter(&counter->hw, bit); } @@ -812,7 +812,7 @@ again: return 1; } -static int amd_pmu_handle_irq(struct pt_regs *regs, int nmi) +static int amd_pmu_handle_irq(struct pt_regs *regs) { int cpu, idx, handled = 0; struct cpu_hw_counters *cpuc; @@ -840,22 +840,13 @@ static int amd_pmu_handle_irq(struct pt_regs *regs, int nmi) if (!x86_perf_counter_set_period(counter, hwc, idx)) continue; - if (perf_counter_overflow(counter, nmi, regs, 0)) + if (perf_counter_overflow(counter, 1, regs, 0)) amd_pmu_disable_counter(hwc, idx); } return handled; } -void smp_perf_counter_interrupt(struct pt_regs *regs) -{ - irq_enter(); - apic_write(APIC_LVTPC, LOCAL_PERF_VECTOR); - ack_APIC_irq(); - x86_pmu.handle_irq(regs, 0); - irq_exit(); -} - void smp_perf_pending_interrupt(struct pt_regs *regs) { irq_enter(); @@ -910,7 +901,7 @@ perf_counter_nmi_handler(struct notifier_block *self, * If the first NMI handles both, the latter will be empty and daze * the CPU. */ - x86_pmu.handle_irq(regs, 1); + x86_pmu.handle_irq(regs); return NOTIFY_STOP; } |