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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-06 09:10:36 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-06 09:10:36 -0400 |
| commit | db8262787e82b5c0fa57bd9d676add187519a751 (patch) | |
| tree | 03f427d0c825a9734b0f468e74eade92bdcb714a /arch/x86 | |
| parent | c98f5827f8f0e0cb075075def7f0d210992ef06d (diff) | |
| parent | f282f7a0ecc3e0b8fd8532a6c3e9401534cb907c (diff) | |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"Mostly tooling fixes and some late tooling updates, plus two perf
related printk message fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tests bpf: Use SyS_epoll_wait alias
perf tests: objdump output can contain multi byte chunks
perf record: Add --sample-cpu option
perf hists: Introduce output_resort_cb method
perf tools: Move config/Makefile into Makefile.config
perf tests: Add test for bitmap_scnprintf function
tools lib: Add bitmap_and function
tools lib: Add bitmap_scnprintf function
tools lib: Add bitmap_alloc function
tools lib traceevent: Ignore generated library files
perf tools: Fix build failure on perl script context
perf/core: Change log level for duration warning to KERN_INFO
perf annotate: Plug filename string leak
perf annotate: Introduce strerror for handling symbol__disassemble() errors
perf annotate: Rename symbol__annotate() to symbol__disassemble()
perf/x86: Modify error message in virtualized environment
perf target: str_error_r() always returns the buffer it receives
perf annotate: Use pipe + fork instead of popen
perf evsel: Introduce constructor for cycles event
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/events/core.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index fad97886d8b1..d0efb5cb1b00 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -263,10 +263,13 @@ static bool check_hw_exists(void) return true; msr_fail: - pr_cont("Broken PMU hardware detected, using software events only.\n"); - printk("%sFailed to access perfctr msr (MSR %x is %Lx)\n", - boot_cpu_has(X86_FEATURE_HYPERVISOR) ? KERN_INFO : KERN_ERR, - reg, val_new); + if (boot_cpu_has(X86_FEATURE_HYPERVISOR)) { + pr_cont("PMU not available due to virtualization, using software events only.\n"); + } else { + pr_cont("Broken PMU hardware detected, using software events only.\n"); + pr_err("Failed to access perfctr msr (MSR %x is %Lx)\n", + reg, val_new); + } return false; } |