perf, x86: Add Nehelem PMU programming errata workaround

Implement the workaround for Intel Errata AAK100 and AAP53.

Also, remove the Core-i7 name for Nehalem events since there are
also Westmere based i7 chips.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1269608924.12097.147.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index f571f514de2a..6f66d4a845ff 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -184,7 +184,7 @@ struct x86_pmu {
         int             version;
         int             (*handle_irq)(struct pt_regs *);
         void            (*disable_all)(void);
-        void            (*enable_all)(void);
+        void            (*enable_all)(int added);
         void            (*enable)(struct perf_event *);
         void            (*disable)(struct perf_event *);
         int             (*hw_config)(struct perf_event_attr *attr, struct hw_perf_event *hwc);
@@ -576,7 +576,7 @@ void hw_perf_disable(void)
         x86_pmu.disable_all();
 }
 
-static void x86_pmu_enable_all(void)
+static void x86_pmu_enable_all(int added)
 {
         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
         int idx;
@@ -784,7 +784,7 @@ void hw_perf_enable(void)
         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
         struct perf_event *event;
         struct hw_perf_event *hwc;
-        int i;
+        int i, added = cpuc->n_added;
 
         if (!x86_pmu_initialized())
                 return;
@@ -836,7 +836,7 @@ void hw_perf_enable(void)
         cpuc->enabled = 1;
         barrier();
 
-        x86_pmu.enable_all();
+        x86_pmu.enable_all(added);
 }
 
 static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc)