Messages in this thread | | | Date | Fri, 15 Jul 2022 15:35:19 -0700 | Subject | [PATCH v3 0/2] Add arch TSC frequency information | From | Ian Rogers <> |
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The first patch adds support for deriving from /proc/cpuinfo and adds tests. The second patch from Kan Liang derives it from CPUID available on newer Intel processors as discussed here: https://lore.kernel.org/lkml/20220527040407.4193232-1-irogers@google.com/#t
v2. Adds warnings to make clear if things have changed/broken on future Intel platforms. It also adds caching and an Intel specific that a value is computed.
Ian Rogers (1): perf metrics: Add literal for system TSC frequency
Kan Liang (1): perf tsc: Add arch TSC frequency information
tools/perf/arch/x86/util/cpuid.h | 34 +++++++++++++++++ tools/perf/arch/x86/util/header.c | 27 ++++++-------- tools/perf/arch/x86/util/tsc.c | 33 ++++++++++++++++ tools/perf/tests/expr.c | 15 ++++++++ tools/perf/util/expr.c | 62 +++++++++++++++++++++++++++++++ tools/perf/util/tsc.h | 1 + 6 files changed, 156 insertions(+), 16 deletions(-) create mode 100644 tools/perf/arch/x86/util/cpuid.h
-- 2.37.0.170.g444d1eabd0-goog
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