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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-06 09:10:36 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-06 09:10:36 -0400
commitdb8262787e82b5c0fa57bd9d676add187519a751 (patch)
tree03f427d0c825a9734b0f468e74eade92bdcb714a /arch
parentc98f5827f8f0e0cb075075def7f0d210992ef06d (diff)
parentf282f7a0ecc3e0b8fd8532a6c3e9401534cb907c (diff)
downloadlinux-db8262787e82b5c0fa57bd9d676add187519a751.tar.bz2
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')
-rw-r--r--arch/x86/events/core.c11
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;
}