From: Ian Rogers <irogers@google.com>
To: namhyung@kernel.org
Cc: irogers@google.com, acme@kernel.org, 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
Subject: [PATCH v4 20/25] perf timechart: Don't pass evsel with sample
Date: Fri, 20 Mar 2026 12:26:22 -0700 [thread overview]
Message-ID: <20260320192627.368357-21-irogers@google.com> (raw)
In-Reply-To: <20260320192627.368357-1-irogers@google.com>
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 <irogers@google.com>
---
tools/perf/builtin-timechart.c | 75 ++++++++++++++++------------------
1 file changed, 35 insertions(+), 40 deletions(-)
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 782ede4258a2..69ee08a8295f 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;
@@ -567,7 +567,6 @@ 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 +577,7 @@ 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 +588,17 @@ 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 +618,6 @@ 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 +634,6 @@ 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 +647,6 @@ 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 +662,6 @@ 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 +678,6 @@ 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 +687,6 @@ 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 +860,8 @@ 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 +870,8 @@ 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 +880,8 @@ 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 +890,8 @@ 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 +900,8 @@ 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 +910,8 @@ 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 +920,8 @@ 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 +930,8 @@ 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 +940,8 @@ 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 +950,8 @@ 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 +960,8 @@ 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 +970,8 @@ 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,
--
2.53.0.959.g497ff81fa9-goog
next prev parent reply other threads:[~2026-03-20 19:29 UTC|newest]
Thread overview: 112+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-09 17:40 [PATCH v1 00/25] perf tool: Add evsel to perf_sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 01/25] perf sample: Document struct perf_sample Ian Rogers
2026-03-03 3:07 ` Namhyung Kim
2026-03-20 4:41 ` Ian Rogers
2026-02-09 17:40 ` [PATCH v1 02/25] perf sample: Make sure perf_sample__init/exit are used Ian Rogers
2026-03-03 22:38 ` Namhyung Kim
2026-02-09 17:40 ` [PATCH v1 03/25] perf sample: Add evsel to struct perf_sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 04/25] perf tool: Remove evsel from tool APIs that pass the sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 05/25] perf kvm: Don't pass evsel with sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 06/25] perf evsel: Refactor evsel__intval to perf_sample__intval Ian Rogers
2026-02-09 17:40 ` [PATCH v1 07/25] perf trace: Don't pass evsel with sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 08/25] perf callchain: Don't pass evsel and sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 09/25] perf lock: Only pass sample to handlers Ian Rogers
2026-02-09 17:40 ` [PATCH v1 10/25] perf lock: Constify trace_lock_handler variables Ian Rogers
2026-02-09 17:40 ` [PATCH v1 11/25] perf hist: Remove evsel parameter from inc samples functions Ian Rogers
2026-02-09 17:40 ` [PATCH v1 12/25] perf db-export: Remove evsel from struct export_sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 13/25] perf hist: Remove evsel from struct hist_entry_iter Ian Rogers
2026-02-09 17:40 ` [PATCH v1 14/25] perf report: Directly use sample->evsel to avoid computing from sample->id Ian Rogers
2026-02-09 17:40 ` [PATCH v1 15/25] perf annotate: Don't pass evsel to add_sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 16/25] perf inject: Don't pass evsel with sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 17/25] perf kmem: " Ian Rogers
2026-02-09 17:40 ` [PATCH v1 18/25] perf kwork: " Ian Rogers
2026-02-09 17:40 ` [PATCH v1 19/25] perf sched: " Ian Rogers
2026-02-09 17:40 ` [PATCH v1 20/25] perf timechart: " Ian Rogers
2026-02-09 17:40 ` [PATCH v1 21/25] perf trace: " Ian Rogers
2026-02-09 17:40 ` [PATCH v1 22/25] perf evlist: Try to avoid computing evsel from sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 23/25] perf script: Don't pass evsel with sample Ian Rogers
2026-02-09 17:40 ` [PATCH v1 24/25] perf s390-sample-raw: " Ian Rogers
2026-02-09 17:40 ` [PATCH v1 25/25] perf evsel: " Ian Rogers
2026-02-23 19:15 ` [PATCH v1 00/25] perf tool: Add evsel to perf_sample Ian Rogers
2026-03-02 17:56 ` Ian Rogers
2026-03-03 1:15 ` Namhyung Kim
2026-03-04 1:02 ` Namhyung Kim
2026-03-04 16:19 ` Ian Rogers
2026-03-19 23:23 ` [PATCH v2 " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 01/25] perf sample: Document struct perf_sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 02/25] perf sample: Make sure perf_sample__init/exit are used Ian Rogers
2026-03-19 23:23 ` [PATCH v2 03/25] perf sample: Add evsel to struct perf_sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 04/25] perf tool: Remove evsel from tool APIs that pass the sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 05/25] perf kvm: Don't pass evsel with sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 06/25] perf evsel: Refactor evsel__intval to perf_sample__intval Ian Rogers
2026-03-19 23:23 ` [PATCH v2 07/25] perf trace: Don't pass evsel with sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 08/25] perf callchain: Don't pass evsel and sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 09/25] perf lock: Only pass sample to handlers Ian Rogers
2026-03-19 23:23 ` [PATCH v2 10/25] perf lock: Constify trace_lock_handler variables Ian Rogers
2026-03-19 23:23 ` [PATCH v2 11/25] perf hist: Remove evsel parameter from inc samples functions Ian Rogers
2026-03-19 23:23 ` [PATCH v2 12/25] perf db-export: Remove evsel from struct export_sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 13/25] perf hist: Remove evsel from struct hist_entry_iter Ian Rogers
2026-03-19 23:23 ` [PATCH v2 14/25] perf report: Directly use sample->evsel to avoid computing from sample->id Ian Rogers
2026-03-19 23:23 ` [PATCH v2 15/25] perf annotate: Don't pass evsel to add_sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 16/25] perf inject: Don't pass evsel with sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 17/25] perf kmem: " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 18/25] perf kwork: " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 19/25] perf sched: " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 20/25] perf timechart: " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 21/25] perf trace: " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 22/25] perf evlist: Try to avoid computing evsel from sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 23/25] perf script: Don't pass evsel with sample Ian Rogers
2026-03-19 23:23 ` [PATCH v2 24/25] perf s390-sample-raw: " Ian Rogers
2026-03-19 23:23 ` [PATCH v2 25/25] perf evsel: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 00/25] perf tool: Add evsel to perf_sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 01/25] perf sample: Document struct perf_sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 02/25] perf sample: Make sure perf_sample__init/exit are used Ian Rogers
2026-03-20 8:08 ` [PATCH v3 03/25] perf sample: Add evsel to struct perf_sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 04/25] perf tool: Remove evsel from tool APIs that pass the sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 05/25] perf kvm: Don't pass evsel with sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 06/25] perf evsel: Refactor evsel__intval to perf_sample__intval Ian Rogers
2026-03-20 8:08 ` [PATCH v3 07/25] perf trace: Don't pass evsel with sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 08/25] perf callchain: Don't pass evsel and sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 09/25] perf lock: Only pass sample to handlers Ian Rogers
2026-03-20 8:08 ` [PATCH v3 10/25] perf lock: Constify trace_lock_handler variables Ian Rogers
2026-03-20 8:08 ` [PATCH v3 11/25] perf hist: Remove evsel parameter from inc samples functions Ian Rogers
2026-03-20 8:08 ` [PATCH v3 12/25] perf db-export: Remove evsel from struct export_sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 13/25] perf hist: Remove evsel from struct hist_entry_iter Ian Rogers
2026-03-20 8:08 ` [PATCH v3 14/25] perf report: Directly use sample->evsel to avoid computing from sample->id Ian Rogers
2026-03-20 8:08 ` [PATCH v3 15/25] perf annotate: Don't pass evsel to add_sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 16/25] perf inject: Don't pass evsel with sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 17/25] perf kmem: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 18/25] perf kwork: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 19/25] perf sched: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 20/25] perf timechart: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 21/25] perf trace: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 22/25] perf evlist: Try to avoid computing evsel from sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 23/25] perf script: Don't pass evsel with sample Ian Rogers
2026-03-20 8:08 ` [PATCH v3 24/25] perf s390-sample-raw: " Ian Rogers
2026-03-20 8:08 ` [PATCH v3 25/25] perf evsel: " Ian Rogers
2026-03-20 19:26 ` [PATCH v4 00/25] perf tool: Add evsel to perf_sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 01/25] perf sample: Document struct perf_sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 02/25] perf sample: Make sure perf_sample__init/exit are used Ian Rogers
2026-03-20 19:26 ` [PATCH v4 03/25] perf sample: Add evsel to struct perf_sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 04/25] perf tool: Remove evsel from tool APIs that pass the sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 05/25] perf kvm: Don't pass evsel with sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 06/25] perf evsel: Refactor evsel__intval to perf_sample__intval Ian Rogers
2026-03-20 19:26 ` [PATCH v4 07/25] perf trace: Don't pass evsel with sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 08/25] perf callchain: Don't pass evsel and sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 09/25] perf lock: Only pass sample to handlers Ian Rogers
2026-03-20 19:26 ` [PATCH v4 10/25] perf lock: Constify trace_lock_handler variables Ian Rogers
2026-03-20 19:26 ` [PATCH v4 11/25] perf hist: Remove evsel parameter from inc samples functions Ian Rogers
2026-03-20 19:26 ` [PATCH v4 12/25] perf db-export: Remove evsel from struct export_sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 13/25] perf hist: Remove evsel from struct hist_entry_iter Ian Rogers
2026-03-20 19:26 ` [PATCH v4 14/25] perf report: Directly use sample->evsel to avoid computing from sample->id Ian Rogers
2026-03-20 19:26 ` [PATCH v4 15/25] perf annotate: Don't pass evsel to add_sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 16/25] perf inject: Don't pass evsel with sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 17/25] perf kmem: " Ian Rogers
2026-03-20 19:26 ` [PATCH v4 18/25] perf kwork: " Ian Rogers
2026-03-20 19:26 ` [PATCH v4 19/25] perf sched: " Ian Rogers
2026-03-20 19:26 ` Ian Rogers [this message]
2026-03-20 19:26 ` [PATCH v4 21/25] perf trace: " Ian Rogers
2026-03-20 19:26 ` [PATCH v4 22/25] perf evlist: Try to avoid computing evsel from sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 23/25] perf script: Don't pass evsel with sample Ian Rogers
2026-03-20 19:26 ` [PATCH v4 24/25] perf s390-sample-raw: Don't pass evsel or its PMU " Ian Rogers
2026-03-20 19:26 ` [PATCH v4 25/25] perf evsel: Don't pass evsel " Ian Rogers
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