[PATCH v2 01/15] perf hwmon_pmu: Avoid shortening hwmon PMU name

From: Ian Rogers
Date: Wed Jun 11 2025 - 12:02:35 EST


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@xxxxxxxxxx>
---
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 c25e7296f1c1..75683c543994 100644
--- a/tools/perf/util/hwmon_pmu.c
+++ b/tools/perf/util/hwmon_pmu.c
@@ -344,7 +344,7 @@ static int hwmon_pmu__read_events(struct hwmon_pmu *pmu)

struct perf_pmu *hwmon_pmu__new(struct list_head *pmus, int 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.rc0.642.g800a2b2222-goog