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authorLinus Torvalds <torvalds@linux-foundation.org>2014-05-01 09:50:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-05-01 09:50:58 -0700
commit2519d3b0f3381beca7b391b516c9c8f5dfd620a4 (patch)
tree493654595b8b0b9260b96d3afcfc558bb0012403 /arch
parentf4961366866ee34cf303b6951a5bad851be5b6fd (diff)
parent399f0c220a0ee97a5a9ea1a699a58fe2aacf2983 (diff)
downloadlinux-2519d3b0f3381beca7b391b516c9c8f5dfd620a4.tar.bz2
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, plus an Intel RAPL PMU driver fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tests x86: Fix stack map lookup in dwarf unwind test perf x86: Fix perf to use non-executable stack, again perf tools: Remove extra '/' character in events file path perf machine: Search for modules in %s/lib/modules/%s perf tests: Add static build make test perf tools: Fix bfd dependency libraries detection perf tools: Use LDFLAGS instead of ALL_LDFLAGS perf/x86: Fix RAPL rdmsrl_safe() usage tools lib traceevent: Fix memory leak in pretty_print() tools lib traceevent: Fix backward compatibility macros for pevent filter enums perf tools: Disable libdw unwind for all but x86 arch perf tests x86: Fix memory leak in sample_ustack()
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_rapl.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
index 7c87424d4140..619f7699487a 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
@@ -543,7 +543,8 @@ static int rapl_cpu_prepare(int cpu)
if (phys_id < 0)
return -1;
- if (!rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
+ /* protect rdmsrl() to handle virtualization */
+ if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
return -1;
pmu = kzalloc_node(sizeof(*pmu), GFP_KERNEL, cpu_to_node(cpu));