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AFNElJ81goC/BHJgplSin7ycePMcCMDP+ymU/ekBeXXuuEe+n5sOeoT8ZBTAVVX2AHe4S4n5q9zdq8hOxP3xXzM=@vger.kernel.org X-Gm-Message-State: AOJu0Yy0CYFwFBob1EF2UT3ipXxdaaQP/oMhbLd8UDLcVWp39dFNomfn V/8pxy+V23b0rnHQg5dYblTaQowv9UmQCI02GXE4qCWhW9Al0tIY/5moF6GH6UX5FBTd4QH8vTG hPWDUW60w5w== X-Received: from dycou11.prod.google.com ([2002:a05:7300:dc8b:b0:2c6:8e1:498d]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:6da3:b0:2d4:afb3:7b06 with SMTP id 5a478bee46e88-2d5874a85e1mr5113606eec.8.1775959734676; Sat, 11 Apr 2026 19:08:54 -0700 (PDT) Date: Sat, 11 Apr 2026 19:08:10 -0700 In-Reply-To: <20260412020833.641177-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260411191710.524998-1-irogers@google.com> <20260412020833.641177-1-irogers@google.com> X-Mailer: git-send-email 2.53.0.1213.gd9a14994de-goog Message-ID: <20260412020833.641177-8-irogers@google.com> Subject: [PATCH v10 07/29] perf lock: Only pass sample to handlers From: Ian Rogers To: irogers@google.com, acme@kernel.org, namhyung@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, 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 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 --- tools/perf/builtin-lock.c | 76 ++++++++++++++++++--------------------- 1 file changed, 35 insertions(+), 41 deletions(-) diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index e2b585e528ac..fcc33089b945 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; @@ -948,9 +938,16 @@ static u64 *get_callstack(struct perf_sample *sample, int max_stack) u64 i; int c; + if (!sample->callchain) { + pr_debug("Sample unexpectedly missing callchain\n"); + return NULL; + } + callstack = calloc(max_stack, sizeof(*callstack)); - if (callstack == NULL) + if (callstack == NULL) { + pr_debug("Failed to allocate callstack\n"); return NULL; + } for (i = 0, c = 0; i < sample->callchain->nr && c < max_stack; i++) { u64 ip = sample->callchain->ips[i]; @@ -963,8 +960,7 @@ 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; @@ -1070,7 +1066,7 @@ static int report_lock_contention_begin_event(struct evsel *evsel __maybe_unused if (needs_callstack()) { u64 *callstack = get_callstack(sample, max_stack_depth); if (callstack == NULL) - return -ENOMEM; + return 0; if (!match_callstack_filter(machine, callstack, max_stack_depth)) { free(callstack); @@ -1127,8 +1123,7 @@ 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 +1203,45 @@ 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 +1419,7 @@ 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 +1439,7 @@ 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