Messages in this thread | | | From | Jin Yao <> | Subject | [PATCH v7 0/2] perf tools: Add PMU alias support | Date | Thu, 2 Sep 2021 14:59:53 +0800 |
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A perf uncore PMU may have two PMU names, a real name and an alias name. With this patch set, the perf tool can monitor the PMU with either the real name or the alias.
Use the real name, $ perf stat -e uncore_cha_2/event=1/ -x, 4044879584,,uncore_cha_2/event=1/,2528059205,100.00,,
Use the alias, $ perf stat -e uncore_type_0_2/event=1/ -x, 3659675336,,uncore_type_0_2/event=1/,2287306455,100.00,,
v7: --- 1. Create 'struct perf_pmu_alias_name' constructor/destructor. 2. Return '-errno' if opendir() is failed.
v6: --- 1. Call setup_pmu_alias_list in pmu_find_alias_name. 2. Check pmu->name and pmu->alias_name after strdup in pmu_lookup.
v5: --- 1. Don't use strdup in find functions (pmu_find_real_name and pmu_find_alias_name). Just return name and keep the 'pmu->name = strdup(name);' in pmu_lookup.
2. Remove invalid comment for alias_name in struct perf_pmu.
v4: --- 1. Fix memory leaks in pmu_lookup. 2. Rebase to perf/core.
v3: --- 1. Use fgets() to replace fscanf(). 2. Resource cleanup.
v2: --- Add test case to verify the real name and alias name having same effect.
Jin Yao (1): perf tests: Test for PMU alias
Kan Liang (1): perf pmu: Add PMU alias support
tools/perf/arch/x86/util/pmu.c | 155 +++++++++++++++++++++++++++++++- tools/perf/tests/parse-events.c | 92 +++++++++++++++++++ tools/perf/util/parse-events.y | 3 +- tools/perf/util/pmu.c | 40 ++++++++- tools/perf/util/pmu.h | 5 ++ 5 files changed, 290 insertions(+), 5 deletions(-)
-- 2.17.1
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