Message ID | 20230527072210.2900565-33-irogers@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Sat, 27 May 2023 00:23:48 -0700 (PDT) Date: Sat, 27 May 2023 00:22:08 -0700 In-Reply-To: <20230527072210.2900565-1-irogers@google.com> Message-Id: <20230527072210.2900565-33-irogers@google.com> Mime-Version: 1.0 References: <20230527072210.2900565-1-irogers@google.com> X-Mailer: git-send-email 2.41.0.rc0.172.g3f132b7071-goog Subject: [PATCH v5 32/34] perf pmus: Add function to return count of core PMUs From: Ian Rogers <irogers@google.com> To: Suzuki K Poulose <suzuki.poulose@arm.com>, Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>, John Garry <john.g.garry@oracle.com>, Will Deacon <will@kernel.org>, James Clark <james.clark@arm.com>, Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>, Ian Rogers <irogers@google.com>, Adrian Hunter <adrian.hunter@intel.com>, Kajol Jain <kjain@linux.ibm.com>, Jing Zhang <renyu.zj@linux.alibaba.com>, Kan Liang <kan.liang@linux.intel.com>, Zhengjun Xing <zhengjun.xing@linux.intel.com>, Ravi Bangoria <ravi.bangoria@amd.com>, Madhavan Srinivasan <maddy@linux.ibm.com>, Athira Rajeev <atrajeev@linux.vnet.ibm.com>, Ming Wang <wangming01@loongson.cn>, Huacai Chen <chenhuacai@kernel.org>, Sandipan Das <sandipan.das@amd.com>, Dmitrii Dolgov <9erthalion6@gmail.com>, Sean Christopherson <seanjc@google.com>, Ali Saidi <alisaidi@amazon.com>, Rob Herring <robh@kernel.org>, Thomas Richter <tmricht@linux.ibm.com>, Kang Minchul <tegongkang@gmail.com>, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230527_082350_250982_A4976534 X-CRM114-Status: GOOD ( 13.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org |
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PMU refactoring and improvements
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expand
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diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index 6ecccb5ad03e..bf927aed162e 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -229,14 +229,8 @@ const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(const char *str) int perf_pmus__num_mem_pmus(void) { - struct perf_pmu *pmu = NULL; - int count = 0; - /* All core PMUs are for mem events. */ - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) - count++; - - return count; + return perf_pmus__num_core_pmus(); } /** Struct for ordering events as output in perf list. */ @@ -488,6 +482,19 @@ bool perf_pmus__has_hybrid(void) return has_hybrid; } +int perf_pmus__num_core_pmus(void) +{ + static int count; + + if (!count) { + struct perf_pmu *pmu = NULL; + + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) + count++; + } + return count; +} + struct perf_pmu *evsel__find_pmu(const struct evsel *evsel) { struct perf_pmu *pmu = evsel->pmu; diff --git a/tools/perf/util/pmus.h b/tools/perf/util/pmus.h index 9de0222ed52b..27400a027d41 100644 --- a/tools/perf/util/pmus.h +++ b/tools/perf/util/pmus.h @@ -19,5 +19,6 @@ int perf_pmus__num_mem_pmus(void); void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *print_state); bool perf_pmus__have_event(const char *pname, const char *name); bool perf_pmus__has_hybrid(void); +int perf_pmus__num_core_pmus(void); #endif /* __PMUS_H */