From d329527e47851f84b1e7944ed9601205f35f1b93 Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Mon, 8 Mar 2010 13:57:14 +0100
Subject: [PATCH] perf, x86: Reorder intel_pmu_enable_all()
The documentation says we have to enable PEBS before we enable the PMU
proper.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/cpu/perf_event_intel.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index c135ed735b22..d3e2424069a7 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -487,6 +487,8 @@ static void intel_pmu_enable_all(void)
{
struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+ intel_pmu_pebs_enable_all();
+ intel_pmu_lbr_enable_all();
wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, x86_pmu.intel_ctrl);
if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
@@ -498,9 +500,6 @@ static void intel_pmu_enable_all(void)
intel_pmu_enable_bts(event->hw.config);
}
-
- intel_pmu_pebs_enable_all();
- intel_pmu_lbr_enable_all();
}
static inline u64 intel_pmu_get_status(void)
--
2.30.9