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From: Jin Yao <yao.jin@linux.intel.com>
To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org,
	mingo@redhat.com, alexander.shishkin@linux.intel.com
Cc: Linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com,
	rickyman7@gmail.com, john.garry@huawei.com,
	Jin Yao <yao.jin@linux.intel.com>
Subject: [PATCH v5 0/2] perf tools: Add PMU alias support
Date: Tue, 17 Aug 2021 13:19:31 +0800	[thread overview]
Message-ID: <20210817051933.16978-1-yao.jin@linux.intel.com> (raw)

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,,

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  | 129 +++++++++++++++++++++++++++++++-
 tools/perf/tests/parse-events.c |  92 +++++++++++++++++++++++
 tools/perf/util/parse-events.y  |   3 +-
 tools/perf/util/pmu.c           |  28 ++++++-
 tools/perf/util/pmu.h           |   5 ++
 5 files changed, 252 insertions(+), 5 deletions(-)

-- 
2.17.1


             reply	other threads:[~2021-08-17  5:21 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-17  5:19 Jin Yao [this message]
2021-08-17  5:19 ` [PATCH v5 1/2] perf pmu: Add PMU alias support Jin Yao
2021-08-31 19:24   ` Jiri Olsa
2021-09-01  1:14     ` Jin, Yao
2021-08-17  5:19 ` [PATCH v5 2/2] perf tests: Test for PMU alias Jin Yao

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