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authorHuang Rui <[email protected]>2016-01-29 16:29:56 +0800
committerIngo Molnar <[email protected]>2016-03-31 10:30:39 +0200
commit8a22426184774d7ced9c1d3aa4d95d34101fb3be (patch)
treed26fbc389c1d47ae503a5cbdd614f2ad437bd6ef /tools/perf/scripts/python/check-perf-trace.py
parentc7afba320e91cca46fdf078798002b9ec84be8d3 (diff)
perf/x86/msr: Add AMD PTSC (Performance Time-Stamp Counter) support
AMD Carrizo (Family 15h, Model 60h) introduces a time-stamp counter which is indicated by CPUID.8000_0001H:ECX[27]. It increments at a 100 MHz rate in all P-states, and C states, S0, or S1. The frequency is about 100MHz. This counter will be used to calculate processor power and other parts. So add an interface into the MSR PMU to get the PTSC counter value. Signed-off-by: Huang Rui <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Aravind Gopalakrishnan <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Fengguang Wu <[email protected]> Cc: Jacob Shin <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Robert Richter <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Suravee Suthikulpanit <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vince Weaver <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
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