UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Peter Zijlstra 2010-03-08 13:57:14 +01:00 committed by Ingo Molnar
parent 2df202bf75
commit d329527e47
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/kernel/cpu/perf_event_intel.c
View File

@ -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)