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AJvYcCVMcUP6lulhZKAR6YQOX8CwH48Kdk0jxXNkUOml3WDPvnSFBYK1ZIFC5w4/gVkSN4lth7IiNorTNp29epnjlMXy@vger.kernel.org X-Gm-Message-State: AOJu0Yw9LjgkH0OZ6qkW3jZEoW+BR7n5Etx+m9Zas9J14fpIougCaRrQ wTXS6LuqZWrgStT/g7SkDfou6NfFs6LUtv1CI/wgCeSThhIxbZV4iPyoW9XrVd5ynk9YkfIgh4Z 3NiSICdwIRQ== X-Received: from dyoy36.prod.google.com ([2002:a05:7300:3724:b0:2c1:5ad0:b659]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:1010:b0:2ba:a2fb:403f with SMTP id 5a478bee46e88-2cbfb995d49mr9326395eec.21.1775633207533; Wed, 08 Apr 2026 00:26:47 -0700 (PDT) Date: Wed, 8 Apr 2026 00:25:56 -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: <20260408072601.210837-19-irogers@google.com> Subject: [PATCH v7 18/23] perf timechart: 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. Add missing backtrace argument to tracepoint_handler functions and mark them unused. Fix missing free from cat_backtrace, which requires copies of the backtrace being made in functions that save it. Signed-off-by: Ian Rogers --- tools/perf/builtin-timechart.c | 81 ++++++++++++++++------------------ 1 file changed, 39 insertions(+), 42 deletions(-) diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 782ede4258a2..0db2a9bd5b91 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -299,7 +299,7 @@ static void pid_put_sample(struct timechart *tchart, int pid, int type, sample->type = type; sample->next = c->samples; sample->cpu = cpu; - sample->backtrace = backtrace; + sample->backtrace = backtrace ? strdup(backtrace) : NULL; c->samples = sample; if (sample->type == TYPE_RUNNING && end > start && start > 0) { @@ -433,7 +433,7 @@ static void sched_wakeup(struct timechart *tchart, int cpu, u64 timestamp, we->time = timestamp; we->waker = waker; - we->backtrace = backtrace; + we->backtrace = backtrace ? strdup(backtrace) : NULL; if ((flags & TRACE_FLAG_HARDIRQ) || (flags & TRACE_FLAG_SOFTIRQ)) we->waker = -1; @@ -489,9 +489,9 @@ static void sched_switch(struct timechart *tchart, int cpu, u64 timestamp, } } -static const char *cat_backtrace(union perf_event *event, - struct perf_sample *sample, - struct machine *machine) +static char *cat_backtrace(union perf_event *event, + struct perf_sample *sample, + struct machine *machine) { struct addr_location al; unsigned int i; @@ -544,8 +544,10 @@ static const char *cat_backtrace(union perf_event *event, * It seems the callchain is corrupted. * Discard all. */ - zfree(&p); - goto exit; + addr_location__exit(&al); + fclose(f); + free(p); + return NULL; } continue; } @@ -567,7 +569,6 @@ static const char *cat_backtrace(union perf_event *event, } typedef int (*tracepoint_handler)(struct timechart *tchart, - struct evsel *evsel, struct perf_sample *sample, const char *backtrace); @@ -578,6 +579,7 @@ static int process_sample_event(const struct perf_tool *tool, { struct timechart *tchart = container_of(tool, struct timechart, tool); struct evsel *evsel = sample->evsel; + int ret = 0; if (evsel->core.attr.sample_type & PERF_SAMPLE_TIME) { if (!tchart->first_time || tchart->first_time > sample->time) @@ -588,16 +590,17 @@ static int process_sample_event(const struct perf_tool *tool, if (evsel->handler != NULL) { tracepoint_handler f = evsel->handler; - return f(tchart, evsel, sample, - cat_backtrace(event, sample, machine)); + char *backtrace = cat_backtrace(event, sample, machine); + + ret = f(tchart, sample, backtrace); + free(backtrace); } - return 0; + return ret; } static int process_sample_cpu_idle(struct timechart *tchart __maybe_unused, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace __maybe_unused) { @@ -617,7 +620,6 @@ process_sample_cpu_idle(struct timechart *tchart __maybe_unused, static int process_sample_cpu_frequency(struct timechart *tchart, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace __maybe_unused) { @@ -634,7 +636,6 @@ process_sample_cpu_frequency(struct timechart *tchart, static int process_sample_sched_wakeup(struct timechart *tchart, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace) { @@ -648,7 +649,6 @@ process_sample_sched_wakeup(struct timechart *tchart, static int process_sample_sched_switch(struct timechart *tchart, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace) { @@ -664,7 +664,6 @@ process_sample_sched_switch(struct timechart *tchart, #ifdef SUPPORT_OLD_POWER_EVENTS static int process_sample_power_start(struct timechart *tchart __maybe_unused, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace __maybe_unused) { @@ -681,7 +680,6 @@ process_sample_power_start(struct timechart *tchart __maybe_unused, static int process_sample_power_end(struct timechart *tchart, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace __maybe_unused) { @@ -691,7 +689,6 @@ process_sample_power_end(struct timechart *tchart, static int process_sample_power_frequency(struct timechart *tchart, - struct evsel *evsel __maybe_unused, struct perf_sample *sample, const char *backtrace __maybe_unused) { @@ -865,8 +862,8 @@ static int pid_end_io_sample(struct timechart *tchart, int pid, int type, static int process_enter_read(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long fd = perf_sample__intval(sample, "fd"); return pid_begin_io_sample(tchart, sample->tid, IOTYPE_READ, @@ -875,8 +872,8 @@ process_enter_read(struct timechart *tchart, static int process_exit_read(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long ret = perf_sample__intval(sample, "ret"); return pid_end_io_sample(tchart, sample->tid, IOTYPE_READ, @@ -885,8 +882,8 @@ process_exit_read(struct timechart *tchart, static int process_enter_write(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long fd = perf_sample__intval(sample, "fd"); return pid_begin_io_sample(tchart, sample->tid, IOTYPE_WRITE, @@ -895,8 +892,8 @@ process_enter_write(struct timechart *tchart, static int process_exit_write(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long ret = perf_sample__intval(sample, "ret"); return pid_end_io_sample(tchart, sample->tid, IOTYPE_WRITE, @@ -905,8 +902,8 @@ process_exit_write(struct timechart *tchart, static int process_enter_sync(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long fd = perf_sample__intval(sample, "fd"); return pid_begin_io_sample(tchart, sample->tid, IOTYPE_SYNC, @@ -915,8 +912,8 @@ process_enter_sync(struct timechart *tchart, static int process_exit_sync(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long ret = perf_sample__intval(sample, "ret"); return pid_end_io_sample(tchart, sample->tid, IOTYPE_SYNC, @@ -925,8 +922,8 @@ process_exit_sync(struct timechart *tchart, static int process_enter_tx(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long fd = perf_sample__intval(sample, "fd"); return pid_begin_io_sample(tchart, sample->tid, IOTYPE_TX, @@ -935,8 +932,8 @@ process_enter_tx(struct timechart *tchart, static int process_exit_tx(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long ret = perf_sample__intval(sample, "ret"); return pid_end_io_sample(tchart, sample->tid, IOTYPE_TX, @@ -945,8 +942,8 @@ process_exit_tx(struct timechart *tchart, static int process_enter_rx(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long fd = perf_sample__intval(sample, "fd"); return pid_begin_io_sample(tchart, sample->tid, IOTYPE_RX, @@ -955,8 +952,8 @@ process_enter_rx(struct timechart *tchart, static int process_exit_rx(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long ret = perf_sample__intval(sample, "ret"); return pid_end_io_sample(tchart, sample->tid, IOTYPE_RX, @@ -965,8 +962,8 @@ process_exit_rx(struct timechart *tchart, static int process_enter_poll(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long fd = perf_sample__intval(sample, "fd"); return pid_begin_io_sample(tchart, sample->tid, IOTYPE_POLL, @@ -975,8 +972,8 @@ process_enter_poll(struct timechart *tchart, static int process_exit_poll(struct timechart *tchart, - struct evsel *evsel __maybe_unused, - struct perf_sample *sample) + struct perf_sample *sample, + const char *backtrace __maybe_unused) { long ret = perf_sample__intval(sample, "ret"); return pid_end_io_sample(tchart, sample->tid, IOTYPE_POLL, -- 2.53.0.1213.gd9a14994de-goog