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AJvYcCUtBVbDrKsYrsgVJM/5dIapPiwcgiNFgCHw8UF5mLaEz1NlSuzD6lLg7Wcofm2GikqBI9LUUB8M5xzNq4lBnXtE@vger.kernel.org X-Gm-Message-State: AOJu0Yxp0xOkWztxP8+pEf3MkoUJGqLXf6LJCbR2u6RKuvBspG9bgNyP IIs8HfHKThGg8UG+Of8M1qoGTt4JhW4yUN/Q/hR2eM2VL7RKsXHHjYJ7Rx90xXUesb4tobk1b+O i3sJkc5ee0g== X-Received: from dlag15.prod.google.com ([2002:a05:701b:250f:b0:12a:c3c1:4ace]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:e14:b0:128:ea68:27f1 with SMTP id a92af1059eb24-12bfb760b99mr9338591c88.23.1775633200703; Wed, 08 Apr 2026 00:26:40 -0700 (PDT) Date: Wed, 8 Apr 2026 00:25:53 -0700 In-Reply-To: <20260408072601.210837-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260408072601.210837-1-irogers@google.com> X-Mailer: git-send-email 2.53.0.1213.gd9a14994de-goog Message-ID: <20260408072601.210837-16-irogers@google.com> Subject: [PATCH v7 15/23] perf kmem: Don't pass evsel with sample From: Ian Rogers To: namhyung@kernel.org, acme@kernel.org Cc: adrian.hunter@intel.com, ajones@ventanamicro.com, ak@linux.intel.com, alex@ghiti.fr, alexander.shishkin@linux.intel.com, anup@brainfault.org, aou@eecs.berkeley.edu, atrajeev@linux.ibm.com, blakejones@google.com, ctshao@google.com, dapeng1.mi@linux.intel.com, derek.foreman@collabora.com, dvyukov@google.com, howardchu95@gmail.com, hrishikesh123s@gmail.com, irogers@google.com, james.clark@linaro.org, jolsa@kernel.org, krzysztof.m.lopatowski@gmail.com, leo.yan@arm.com, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux@treblig.org, mingo@redhat.com, nichen@iscas.ac.cn, palmer@dabbelt.com, peterz@infradead.org, pjw@kernel.org, ravi.bangoria@amd.com, swapnil.sapkal@amd.com, tanze@kylinos.cn, thomas.falcon@intel.com, tianyou.li@intel.com, yujie.liu@intel.com, zhouquan@iscas.ac.cn Content-Type: text/plain; charset="UTF-8" The sample contains the evsel and so it is unnecessary to pass the evsel as well. Fix memory leaks on error paths spotted during code review. Signed-off-by: Ian Rogers --- tools/perf/builtin-kmem.c | 44 ++++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 19 deletions(-) diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index b04f5d578e7a..cafa0eabfbc5 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -171,7 +171,7 @@ static int insert_caller_stat(unsigned long call_site, return 0; } -static int evsel__process_alloc_event(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_alloc_event(struct perf_sample *sample) { unsigned long ptr = perf_sample__intval(sample, "ptr"), call_site = perf_sample__intval(sample, "call_site"); @@ -198,7 +198,7 @@ static int evsel__process_alloc_event(struct evsel *evsel, struct perf_sample *s * If the tracepoint contains the field "node" the tool stats the * cross allocation. */ - if (evsel__field(evsel, "node")) { + if (evsel__field(sample->evsel, "node")) { int node1, node2; node1 = cpu__get_node((struct perf_cpu){.cpu = sample->cpu}); @@ -243,7 +243,7 @@ static struct alloc_stat *search_alloc_stat(unsigned long ptr, return NULL; } -static int evsel__process_free_event(struct evsel *evsel __maybe_unused, struct perf_sample *sample) +static int evsel__process_free_event(struct perf_sample *sample) { unsigned long ptr = perf_sample__intval(sample, "ptr"); struct alloc_stat *s_alloc, *s_caller; @@ -751,8 +751,7 @@ static char *compact_gfp_string(unsigned long gfp_flags) return NULL; } -static int parse_gfp_flags(struct evsel *evsel, struct perf_sample *sample, - unsigned int gfp_flags) +static int parse_gfp_flags(struct perf_sample *sample, unsigned int gfp_flags) { struct tep_record record = { .cpu = sample->cpu, @@ -773,7 +772,7 @@ static int parse_gfp_flags(struct evsel *evsel, struct perf_sample *sample, } trace_seq_init(&seq); - tp_format = evsel__tp_format(evsel); + tp_format = evsel__tp_format(sample->evsel); if (tp_format) tep_print_event(tp_format->tep, &seq, &record, "%s", TEP_PRINT_INFO); @@ -784,17 +783,21 @@ static int parse_gfp_flags(struct evsel *evsel, struct perf_sample *sample, new = realloc(gfps, (nr_gfps + 1) * sizeof(*gfps)); if (new == NULL) - return -ENOMEM; + goto err_out; gfps = new; - new += nr_gfps++; + new += nr_gfps; new->flags = gfp_flags; new->human_readable = strdup(str + 10); + if(!new->human_readable) + goto err_out; new->compact_str = compact_gfp_flags(str + 10); - if (!new->human_readable || !new->compact_str) - return -ENOMEM; - + if (!new->compact_str) { + free(new->human_readable); + goto err_out; + } + nr_gfps++; qsort(gfps, nr_gfps, sizeof(*gfps), gfpcmp); } @@ -803,9 +806,12 @@ static int parse_gfp_flags(struct evsel *evsel, struct perf_sample *sample, trace_seq_destroy(&seq); return 0; +err_out: + trace_seq_destroy(&seq); + return -ENOMEM; } -static int evsel__process_page_alloc_event(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_page_alloc_event(struct perf_sample *sample) { u64 page; unsigned int order = perf_sample__intval(sample, "order"); @@ -845,7 +851,7 @@ static int evsel__process_page_alloc_event(struct evsel *evsel, struct perf_samp return 0; } - if (parse_gfp_flags(evsel, sample, gfp_flags) < 0) + if (parse_gfp_flags(sample, gfp_flags) < 0) return -1; callsite = find_callsite(sample); @@ -886,8 +892,7 @@ static int evsel__process_page_alloc_event(struct evsel *evsel, struct perf_samp return 0; } -static int evsel__process_page_free_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int evsel__process_page_free_event(struct perf_sample *sample) { u64 page; unsigned int order = perf_sample__intval(sample, "order"); @@ -969,8 +974,7 @@ static bool perf_kmem__skip_sample(struct perf_sample *sample) return false; } -typedef int (*tracepoint_handler)(struct evsel *evsel, - struct perf_sample *sample); +typedef int (*tracepoint_handler)(struct perf_sample *sample); static int process_sample_event(const struct perf_tool *tool __maybe_unused, union perf_event *event, @@ -988,14 +992,16 @@ static int process_sample_event(const struct perf_tool *tool __maybe_unused, return -1; } - if (perf_kmem__skip_sample(sample)) + if (perf_kmem__skip_sample(sample)) { + thread__put(thread); return 0; + } dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread__tid(thread)); if (evsel->handler != NULL) { tracepoint_handler f = evsel->handler; - err = f(evsel, sample); + err = f(sample); } thread__put(thread); -- 2.53.0.1213.gd9a14994de-goog