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From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	 Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	 Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>,  Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	 "Dr. David Alan Gilbert" <linux@treblig.org>,
	Yang Li <yang.lee@linux.alibaba.com>,
	 James Clark <james.clark@linaro.org>,
	Thomas Falcon <thomas.falcon@intel.com>,
	 Thomas Richter <tmricht@linux.ibm.com>,
	linux-perf-users@vger.kernel.org,  linux-kernel@vger.kernel.org,
	Andi Kleen <ak@linux.intel.com>,
	 Dapeng Mi <dapeng1.mi@linux.intel.com>
Subject: [PATCH v4 02/10] perf pmu: perf_cpu_map__new_int to avoid parsing a string
Date: Thu, 13 Nov 2025 10:05:08 -0800	[thread overview]
Message-ID: <20251113180517.44096-3-irogers@google.com> (raw)
In-Reply-To: <20251113180517.44096-1-irogers@google.com>

Prefer perf_cpu_map__new_int(0) to perf_cpu_map__new("0") as it avoids
strings parsing.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/drm_pmu.c   | 2 +-
 tools/perf/util/hwmon_pmu.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/drm_pmu.c b/tools/perf/util/drm_pmu.c
index 98d4d2b556d4..fc864bde4cb2 100644
--- a/tools/perf/util/drm_pmu.c
+++ b/tools/perf/util/drm_pmu.c
@@ -119,7 +119,7 @@ static struct drm_pmu *add_drm_pmu(struct list_head *pmus, char *line, size_t li
 		return NULL;
 	}
 
-	drm->pmu.cpus = perf_cpu_map__new("0");
+	drm->pmu.cpus = perf_cpu_map__new_int(0);
 	if (!drm->pmu.cpus) {
 		perf_pmu__delete(&drm->pmu);
 		return NULL;
diff --git a/tools/perf/util/hwmon_pmu.c b/tools/perf/util/hwmon_pmu.c
index 5c27256a220a..279d6b1a47f0 100644
--- a/tools/perf/util/hwmon_pmu.c
+++ b/tools/perf/util/hwmon_pmu.c
@@ -376,7 +376,7 @@ struct perf_pmu *hwmon_pmu__new(struct list_head *pmus, const char *hwmon_dir,
 		perf_pmu__delete(&hwm->pmu);
 		return NULL;
 	}
-	hwm->pmu.cpus = perf_cpu_map__new("0");
+	hwm->pmu.cpus = perf_cpu_map__new_int(0);
 	if (!hwm->pmu.cpus) {
 		perf_pmu__delete(&hwm->pmu);
 		return NULL;
-- 
2.51.2.1041.gc1ab5b90ca-goog


  parent reply	other threads:[~2025-11-13 18:05 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-13 18:05 [PATCH v4 00/10] perf stat fixes and improvements Ian Rogers
2025-11-13 18:05 ` [PATCH v4 01/10] libperf cpumap: Reduce allocations and sorting in intersect Ian Rogers
2025-11-13 18:05 ` Ian Rogers [this message]
2025-11-13 18:05 ` [PATCH v4 03/10] perf tool_pmu: Use old_count when computing count values for time events Ian Rogers
2025-11-13 18:05 ` [PATCH v4 04/10] perf stat-shadow: Read tool events directly Ian Rogers
2025-11-18  2:30   ` Namhyung Kim
2025-11-18  4:36     ` Ian Rogers
2025-11-18  6:45       ` Namhyung Kim
2025-11-13 18:05 ` [PATCH v4 05/10] perf stat: Reduce scope of ru_stats Ian Rogers
2025-11-18  2:31   ` Namhyung Kim
2025-11-13 18:05 ` [PATCH v4 06/10] perf stat: Reduce scope of walltime_nsecs_stats Ian Rogers
2025-11-13 18:05 ` [PATCH v4 07/10] perf tool_pmu: More accurately set the cpus for tool events Ian Rogers
2026-02-03 17:37   ` Andres Freund
2026-02-03 23:05     ` Ian Rogers
2026-02-03 23:27       ` Andres Freund
2026-02-03 23:31         ` Ian Rogers
2025-11-13 18:05 ` [PATCH v4 08/10] perf evlist: Reduce affinity use and move into iterator, fix no affinity Ian Rogers
2025-11-13 18:05 ` [PATCH v4 09/10] perf stat: Read tool events last Ian Rogers
2025-11-18  2:35   ` Namhyung Kim
2025-11-18  4:38     ` Ian Rogers
2025-11-18  6:46       ` Namhyung Kim
2025-11-13 18:05 ` [PATCH v4 10/10] perf stat: Add no-affinity flag Ian Rogers
2025-11-18  2:40   ` Namhyung Kim
2025-11-18  4:32     ` Ian Rogers
2025-11-18  6:50       ` Namhyung Kim
2025-11-18 18:00 ` [PATCH v4 00/10] perf stat fixes and improvements Namhyung Kim

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