From nobody Mon Apr 6 11:01:27 2026 Received: from mail-dl1-f73.google.com (mail-dl1-f73.google.com [74.125.82.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 632593D813B for ; Fri, 3 Apr 2026 20:41:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775248865; cv=none; b=WRwEwpjOn4E4XEURzcoeT9ztmUflanBQ0IndqiTRIqbmd2XOzuTsrIFTta9yRdIxXs1SlbgBS7yp2tnxgwUY+tJvUJmcbcc9arR4gRbLK4542cW4NkQUN1HIIX6PyIszmC9ZKU9uMadEDL+ZjDFZ7HD7Vzn02Lnb+h4ULPrd9C8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775248865; c=relaxed/simple; bh=lta2fI5qXdYPdhIfm8zOThe6wXUgcAlnODSeXuma/Io=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=GPYZ6bFeKbd+W3rmTuM83JCiavaI/HFkQBePUOTv5sLEI8aUQfTxVEmFJAFzJLzWLhsFBrQy/YEnGMQMHBFs9MMbzrliBAIyOE2JPnF0U7SMsWwBMPvRuOkik826Llrp0AZX3x89F+uB2VSQETgPsMsBCLuT9VsVF1AxOjDyrug= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=ulDUbRVy; arc=none smtp.client-ip=74.125.82.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ulDUbRVy" Received: by mail-dl1-f73.google.com with SMTP id a92af1059eb24-1276e71652fso4453143c88.0 for ; Fri, 03 Apr 2026 13:41:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1775248864; x=1775853664; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=KaYE6VTNH1rn50K/H2pN6vOvFrscNqJ0UK5rxmsiNw8=; b=ulDUbRVyRxSf4ys6gxo7zqsTsM6HwYLURVTEqwFIi5AmYpOmaJd6/0YrlSTt1DT52O 414eWe1npzyj7PYTXVyTnwbQQJyqSkY4xvOqYl6hJ6YwmB2jG3BUEKL1Sw/9TygeZVpy //ZEQMHXEHg1Hau+ogPJevOVSjkYlWrgozfSmOdBa3jSv8yE+sek3qEnDx0XhFX/R7Qn mBWEaOksjJlvHv1zMcZOqJ0fxuOpt6Tm02RtXS2udSWZj/+cEyTkMBMSv0awqf0A7NaO 26ga4BPi/Z1lCNe2P1vI4+KD0HE4gopvr+nq4+ZHpiXcBuHhTgp26W6ZbbfIM1mps2pY X9fA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775248864; x=1775853664; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=KaYE6VTNH1rn50K/H2pN6vOvFrscNqJ0UK5rxmsiNw8=; b=k4Ss7QUYDUrLdq3AdNmXz12fVqLE3cs2F5NQCy5WAAwRDd0MEuaEaJ3Ku6LGJHCNzI IjWIVoVxj/lrML2x7P7pqYqelhvOIHWtIjXtIRYnZsM21WstnX1MQJlC5PcY1fRifZ3T +IOTXJ6Syr7OekCrrYb/TAhxhA+1TEd5uEWWPHcdw5FU5RMjWrZV/yLH0oGnDaHfBy4b /JvmRvnwpO+W/PILm4bsJn5P+by0gM31kyR0Lg2DP2meaXpUIkh5wQPkll1mvFzIiFTS BeZ8gqDafGYG3SGbSyjmCPiDmMd7KtfZ+vmti001aIXu/mef/NEpPqHkAdh+/pvk+SgD vU5w== X-Forwarded-Encrypted: i=1; AJvYcCVOpQiYUNmFOPA5m9FZ0DZMnWWMvnN6En8APOeoSxIdWNFdvcx6nBpwru8b5a2f4SmGsDZX0bgxUZJGE5I=@vger.kernel.org X-Gm-Message-State: AOJu0YxvT9inoBIZqByMYGAQyruRycdwv8xH/x/cmgz0/11ADXdiNyxR KWo3J33kYPvaA4ow3ER4QWXmFahB2PKRuO12bd62yRRdb9nT2qyi09tNUwVuifAzctBkUG/O4Bl ai1fu8tQGXA== X-Received: from dlae5.prod.google.com ([2002:a05:701b:2305:b0:12b:fdc5:ed69]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7023:b0c:b0:12a:713b:8953 with SMTP id a92af1059eb24-12bfb6fbf94mr1891515c88.12.1775248863422; Fri, 03 Apr 2026 13:41:03 -0700 (PDT) Date: Fri, 3 Apr 2026 13:40:09 -0700 In-Reply-To: <20260403204017.2919994-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260403204017.2919994-1-irogers@google.com> X-Mailer: git-send-email 2.53.0.1213.gd9a14994de-goog Message-ID: <20260403204017.2919994-18-irogers@google.com> Subject: [PATCH v5 17/25] perf kmem: Don't pass evsel with sample From: Ian Rogers To: acme@kernel.org, namhyung@kernel.org Cc: irogers@google.com, 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, 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-Transfer-Encoding: quoted-printable 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; } =20 -static int evsel__process_alloc_event(struct evsel *evsel, struct perf_sam= ple *sample) +static int evsel__process_alloc_event(struct perf_sample *sample) { unsigned long ptr =3D perf_sample__intval(sample, "ptr"), call_site =3D perf_sample__intval(sample, "call_site"); @@ -198,7 +198,7 @@ static int evsel__process_alloc_event(struct evsel *evs= el, 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; =20 node1 =3D cpu__get_node((struct perf_cpu){.cpu =3D sample->cpu}); @@ -243,7 +243,7 @@ static struct alloc_stat *search_alloc_stat(unsigned lo= ng ptr, return NULL; } =20 -static int evsel__process_free_event(struct evsel *evsel __maybe_unused, s= truct perf_sample *sample) +static int evsel__process_free_event(struct perf_sample *sample) { unsigned long ptr =3D 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; } =20 -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_fl= ags) { struct tep_record record =3D { .cpu =3D sample->cpu, @@ -773,7 +772,7 @@ static int parse_gfp_flags(struct evsel *evsel, struct = perf_sample *sample, } =20 trace_seq_init(&seq); - tp_format =3D evsel__tp_format(evsel); + tp_format =3D evsel__tp_format(sample->evsel); if (tp_format) tep_print_event(tp_format->tep, &seq, &record, "%s", TEP_PRINT_INFO); =20 @@ -784,17 +783,21 @@ static int parse_gfp_flags(struct evsel *evsel, struc= t perf_sample *sample, =20 new =3D realloc(gfps, (nr_gfps + 1) * sizeof(*gfps)); if (new =3D=3D NULL) - return -ENOMEM; + goto err_out; =20 gfps =3D new; - new +=3D nr_gfps++; + new +=3D nr_gfps; =20 new->flags =3D gfp_flags; new->human_readable =3D strdup(str + 10); + if(!new->human_readable) + goto err_out; new->compact_str =3D 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); } =20 @@ -803,9 +806,12 @@ static int parse_gfp_flags(struct evsel *evsel, struct= perf_sample *sample, =20 trace_seq_destroy(&seq); return 0; +err_out: + trace_seq_destroy(&seq); + return -ENOMEM; } =20 -static int evsel__process_page_alloc_event(struct evsel *evsel, struct per= f_sample *sample) +static int evsel__process_page_alloc_event(struct perf_sample *sample) { u64 page; unsigned int order =3D perf_sample__intval(sample, "order"); @@ -845,7 +851,7 @@ static int evsel__process_page_alloc_event(struct evsel= *evsel, struct perf_samp return 0; } =20 - if (parse_gfp_flags(evsel, sample, gfp_flags) < 0) + if (parse_gfp_flags(sample, gfp_flags) < 0) return -1; =20 callsite =3D find_callsite(sample); @@ -886,8 +892,7 @@ static int evsel__process_page_alloc_event(struct evsel= *evsel, struct perf_samp return 0; } =20 -static int evsel__process_page_free_event(struct evsel *evsel __maybe_unus= ed, - struct perf_sample *sample) +static int evsel__process_page_free_event(struct perf_sample *sample) { u64 page; unsigned int order =3D perf_sample__intval(sample, "order"); @@ -969,8 +974,7 @@ static bool perf_kmem__skip_sample(struct perf_sample *= sample) return false; } =20 -typedef int (*tracepoint_handler)(struct evsel *evsel, - struct perf_sample *sample); +typedef int (*tracepoint_handler)(struct perf_sample *sample); =20 static int process_sample_event(const struct perf_tool *tool __maybe_unuse= d, union perf_event *event, @@ -988,14 +992,16 @@ static int process_sample_event(const struct perf_too= l *tool __maybe_unused, return -1; } =20 - if (perf_kmem__skip_sample(sample)) + if (perf_kmem__skip_sample(sample)) { + thread__put(thread); return 0; + } =20 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread__tid= (thread)); =20 if (evsel->handler !=3D NULL) { tracepoint_handler f =3D evsel->handler; - err =3D f(evsel, sample); + err =3D f(sample); } =20 thread__put(thread); --=20 2.53.0.1213.gd9a14994de-goog