6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ian Rogers irogers@google.com
[ Upstream commit 85f73c377b2ac9988a204b119aebb33ca5c60083 ]
pmu should be initialized to NULL before perf_pmus__scan loop. Fix and shrink the scope of pmu at the same time. Issue detected by clang-tidy.
Fixes: 5752c20f3787 ("perf mem: Scan all PMUs instead of just core ones") Signed-off-by: Ian Rogers irogers@google.com Acked-by: Namhyung Kim namhyung@kernel.org Cc: Ravi Bangoria ravi.bangoria@amd.com Cc: Nick Desaulniers ndesaulniers@google.com Cc: Yang Jihong yangjihong1@huawei.com Cc: Huacai Chen chenhuacai@kernel.org Cc: Nathan Chancellor nathan@kernel.org Cc: Kan Liang kan.liang@linux.intel.com Cc: llvm@lists.linux.dev Cc: Ming Wang wangming01@loongson.cn Cc: Tom Rix trix@redhat.com Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-10-irogers@google.com Signed-off-by: Namhyung Kim namhyung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/mem-events.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c index 39ffe8ceb3809..954b235e12e51 100644 --- a/tools/perf/util/mem-events.c +++ b/tools/perf/util/mem-events.c @@ -185,7 +185,6 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr, { int i = *argv_nr, k = 0; struct perf_mem_event *e; - struct perf_pmu *pmu;
for (int j = 0; j < PERF_MEM_EVENTS__MAX; j++) { e = perf_mem_events__ptr(j); @@ -202,6 +201,8 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr, rec_argv[i++] = "-e"; rec_argv[i++] = perf_mem_events__name(j, NULL); } else { + struct perf_pmu *pmu = NULL; + if (!e->supported) { perf_mem_events__print_unsupport_hybrid(e, j); return -1;