Messages in this thread Patch in this message |  | | Date | Sat, 11 Apr 2026 12:16:48 -0700 | | Subject | [PATCH v9 07/29] perf lock: Only pass sample to handlers | | From | Ian Rogers <> |
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The evsel is within the sample and so only the sample needs to be passed. Remove the parameter and fix call site.
Add an additional NULL check in get_callstack, as prompted by Sashiko during review.
Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/builtin-lock.c | 69 ++++++++++++++++----------------------- 1 file changed, 28 insertions(+), 41 deletions(-)
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index e2b585e528ac..2a6fc4c97dcd 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -473,28 +473,22 @@ static struct lock_stat *pop_from_result(void) struct trace_lock_handler { /* it's used on CONFIG_LOCKDEP */ - int (*acquire_event)(struct evsel *evsel, - struct perf_sample *sample); + int (*acquire_event)(struct perf_sample *sample); /* it's used on CONFIG_LOCKDEP && CONFIG_LOCK_STAT */ - int (*acquired_event)(struct evsel *evsel, - struct perf_sample *sample); + int (*acquired_event)(struct perf_sample *sample); /* it's used on CONFIG_LOCKDEP && CONFIG_LOCK_STAT */ - int (*contended_event)(struct evsel *evsel, - struct perf_sample *sample); + int (*contended_event)(struct perf_sample *sample); /* it's used on CONFIG_LOCKDEP */ - int (*release_event)(struct evsel *evsel, - struct perf_sample *sample); + int (*release_event)(struct perf_sample *sample); /* it's used when CONFIG_LOCKDEP is off */ - int (*contention_begin_event)(struct evsel *evsel, - struct perf_sample *sample); + int (*contention_begin_event)(struct perf_sample *sample); /* it's used when CONFIG_LOCKDEP is off */ - int (*contention_end_event)(struct evsel *evsel, - struct perf_sample *sample); + int (*contention_end_event)(struct perf_sample *sample); }; static struct lock_seq_stat *get_seq(struct thread_stat *ts, u64 addr) @@ -563,8 +557,7 @@ static int get_key_by_aggr_mode(u64 *key, u64 addr, return get_key_by_aggr_mode_simple(key, addr, sample->tid); } -static int report_lock_acquire_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int report_lock_acquire_event(struct perf_sample *sample) { struct lock_stat *ls; struct thread_stat *ts; @@ -638,8 +631,7 @@ static int report_lock_acquire_event(struct evsel *evsel __maybe_unused, return 0; } -static int report_lock_acquired_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int report_lock_acquired_event(struct perf_sample *sample) { struct lock_stat *ls; struct thread_stat *ts; @@ -704,8 +696,7 @@ static int report_lock_acquired_event(struct evsel *evsel __maybe_unused, return 0; } -static int report_lock_contended_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int report_lock_contended_event(struct perf_sample *sample) { struct lock_stat *ls; struct thread_stat *ts; @@ -762,8 +753,7 @@ static int report_lock_contended_event(struct evsel *evsel __maybe_unused, return 0; } -static int report_lock_release_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int report_lock_release_event(struct perf_sample *sample) { struct lock_stat *ls; struct thread_stat *ts; @@ -949,8 +939,8 @@ static u64 *get_callstack(struct perf_sample *sample, int max_stack) int c; callstack = calloc(max_stack, sizeof(*callstack)); - if (callstack == NULL) - return NULL; + if (callstack == NULL || !sample->callchain) + return callstack; for (i = 0, c = 0; i < sample->callchain->nr && c < max_stack; i++) { u64 ip = sample->callchain->ips[i]; @@ -963,8 +953,7 @@ static u64 *get_callstack(struct perf_sample *sample, int max_stack) return callstack; } -static int report_lock_contention_begin_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int report_lock_contention_begin_event(struct perf_sample *sample) { struct lock_stat *ls; struct thread_stat *ts; @@ -1127,8 +1116,7 @@ static int report_lock_contention_begin_event(struct evsel *evsel __maybe_unused return 0; } -static int report_lock_contention_end_event(struct evsel *evsel __maybe_unused, - struct perf_sample *sample) +static int report_lock_contention_end_event(struct perf_sample *sample) { struct lock_stat *ls; struct thread_stat *ts; @@ -1208,45 +1196,45 @@ static struct trace_lock_handler contention_lock_ops = { static struct trace_lock_handler *trace_handler; -static int evsel__process_lock_acquire(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_lock_acquire(struct perf_sample *sample) { if (trace_handler->acquire_event) - return trace_handler->acquire_event(evsel, sample); + return trace_handler->acquire_event(sample); return 0; } -static int evsel__process_lock_acquired(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_lock_acquired(struct perf_sample *sample) { if (trace_handler->acquired_event) - return trace_handler->acquired_event(evsel, sample); + return trace_handler->acquired_event(sample); return 0; } -static int evsel__process_lock_contended(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_lock_contended(struct perf_sample *sample) { if (trace_handler->contended_event) - return trace_handler->contended_event(evsel, sample); + return trace_handler->contended_event(sample); return 0; } -static int evsel__process_lock_release(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_lock_release(struct perf_sample *sample) { if (trace_handler->release_event) - return trace_handler->release_event(evsel, sample); + return trace_handler->release_event(sample); return 0; } -static int evsel__process_contention_begin(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_contention_begin(struct perf_sample *sample) { if (trace_handler->contention_begin_event) - return trace_handler->contention_begin_event(evsel, sample); + return trace_handler->contention_begin_event(sample); return 0; } -static int evsel__process_contention_end(struct evsel *evsel, struct perf_sample *sample) +static int evsel__process_contention_end(struct perf_sample *sample) { if (trace_handler->contention_end_event) - return trace_handler->contention_end_event(evsel, sample); + return trace_handler->contention_end_event(sample); return 0; } @@ -1424,8 +1412,7 @@ static int process_event_update(const struct perf_tool *tool, return 0; } -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, @@ -1445,7 +1432,7 @@ static int process_sample_event(const struct perf_tool *tool __maybe_unused, 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
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