linux-kernel - [PATCH v1 01/12] perf hwmon_pmu: Avoid shortening hwmon PMU name

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Message-ID: <20250709214029.1769089-2-irogers@google.com>
Date: Wed,  9 Jul 2025 14:40:18 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, James Clark <james.clark@...aro.org>, 
	Xu Yang <xu.yang_2@....com>, Howard Chu <howardchu95@...il.com>, 
	"Dr. David Alan Gilbert" <linux@...blig.org>, Levi Yun <yeoreum.yun@....com>, Andi Kleen <ak@...ux.intel.com>, 
	Thomas Richter <tmricht@...ux.ibm.com>, Weilin Wang <weilin.wang@...el.com>, 
	Tiezhu Yang <yangtiezhu@...ngson.cn>, Gautam Menghani <gautam@...ux.ibm.com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 01/12] perf hwmon_pmu: Avoid shortening hwmon PMU name

Long names like ucsi_source_psy_USBC000:001 when prefixed with hwmon_
exceed the buffer size and the last digit is lost. This causes
confusion with similar names like ucsi_source_psy_USBC000:002. Extend
the buffer size to avoid this.

Fixes: 53cc0b351ec9 ("perf hwmon_pmu: Add a tool PMU exposing events from hwmon in sysfs")
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/hwmon_pmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/hwmon_pmu.c b/tools/perf/util/hwmon_pmu.c
index 7edda010ba27..416dfea9ffff 100644
--- a/tools/perf/util/hwmon_pmu.c
+++ b/tools/perf/util/hwmon_pmu.c
@@ -345,7 +345,7 @@ static int hwmon_pmu__read_events(struct hwmon_pmu *pmu)
 struct perf_pmu *hwmon_pmu__new(struct list_head *pmus, const char *hwmon_dir,
 				const char *sysfs_name, const char *name)
 {
-	char buf[32];
+	char buf[64];
 	struct hwmon_pmu *hwm;
 	__u32 type = PERF_PMU_TYPE_HWMON_START + strtoul(sysfs_name + 5, NULL, 10);
 
-- 
2.50.0.727.gbf7dc18ff4-goog