Commits
Andy Lutomirski committed b7b7c7821d9
perf/x86: Add an MSR PMU driver This patch adds an MSR PMU to support free running MSR counters. Such as time and freq related counters includes TSC, IA32_APERF, IA32_MPERF and IA32_PPERF, but also SMI_COUNT. The events are exposed in sysfs for use by perf stat and other tools. The files are under /sys/devices/msr/events/ Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Kan Liang <kan.liang@intel.com> [ s/freq/msr/, added SMI_COUNT, fixed bugs. ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@kernel.org Cc: adrian.hunter@intel.com Cc: dsahern@gmail.com Cc: eranian@google.com Cc: jolsa@kernel.org Cc: mark.rutland@arm.com Cc: namhyung@kernel.org Link: http://lkml.kernel.org/r/1437407346-31186-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>