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Tue, 28 Apr 2026 00:19:50 -0700 (PDT) Date: Tue, 28 Apr 2026 00:18:21 -0700 In-Reply-To: <20260428071903.1886173-1-irogers@google.com> Mime-Version: 1.0 References: <20260425224951.174663-1-irogers@google.com> <20260428071903.1886173-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.545.g6539524ca2-goog Message-ID: <20260428071903.1886173-17-irogers@google.com> Subject: [PATCH v8 16/58] perf python: Add mmap2 event From: Ian Rogers To: acme@kernel.org, namhyung@kernel.org Cc: adrian.hunter@intel.com, alice.mei.rogers@gmail.com, dapeng1.mi@linux.intel.com, james.clark@linaro.org, leo.yan@linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, tmricht@linux.ibm.com, Ian Rogers Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260428_001951_740570_44082B2A X-CRM114-Status: GOOD ( 14.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org If mmap is handled so should mmap2 events. Add support as a distinct python event type. Assisted-by: Gemini:gemini-3.1-pro-preview Signed-off-by: Ian Rogers --- tools/perf/util/python.c | 60 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 1ca296000351..ae009bc9a0d7 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -151,6 +151,54 @@ static PyTypeObject pyrf_mmap_event__type = { .tp_repr = (reprfunc)pyrf_mmap_event__repr, }; +static const char pyrf_mmap2_event__doc[] = PyDoc_STR("perf mmap2 event object."); + +static PyMemberDef pyrf_mmap2_event__members[] = { + sample_members + member_def(perf_event_header, type, T_UINT, "event type"), + member_def(perf_event_header, misc, T_UINT, "event misc"), + member_def(perf_record_mmap2, pid, T_UINT, "event pid"), + member_def(perf_record_mmap2, tid, T_UINT, "event tid"), + member_def(perf_record_mmap2, start, T_ULONGLONG, "start of the map"), + member_def(perf_record_mmap2, len, T_ULONGLONG, "map length"), + member_def(perf_record_mmap2, pgoff, T_ULONGLONG, "page offset"), + member_def(perf_record_mmap2, prot, T_UINT, "protection"), + member_def(perf_record_mmap2, flags, T_UINT, "flags"), + member_def(perf_record_mmap2, filename, T_STRING_INPLACE, "backing store"), + { .name = NULL, }, +}; + +static PyObject *pyrf_mmap2_event__repr(const struct pyrf_event *pevent) +{ + PyObject *ret; + char *s; + + if (asprintf(&s, "{ type: mmap2, pid: %u, tid: %u, start: %#" PRI_lx64 ", " + "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", " + "flags: %#x, prot: %#x, filename: %s }", + pevent->event.mmap2.pid, pevent->event.mmap2.tid, + pevent->event.mmap2.start, pevent->event.mmap2.len, + pevent->event.mmap2.pgoff, pevent->event.mmap2.flags, + pevent->event.mmap2.prot, pevent->event.mmap2.filename) < 0) + return PyErr_NoMemory(); + + ret = PyUnicode_FromString(s); + free(s); + return ret; +} + +static PyTypeObject pyrf_mmap2_event__type = { + PyVarObject_HEAD_INIT(NULL, 0) + .tp_name = "perf.mmap2_event", + .tp_basicsize = sizeof(struct pyrf_event), + .tp_dealloc = (destructor)pyrf_event__delete, + .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, + .tp_doc = pyrf_mmap2_event__doc, + .tp_members = pyrf_mmap2_event__members, + .tp_getset = pyrf_event__getset, + .tp_repr = (reprfunc)pyrf_mmap2_event__repr, +}; + static const char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object."); static PyMemberDef pyrf_task_event__members[] = { @@ -776,6 +824,9 @@ static int pyrf_event__setup_types(void) int err; err = PyType_Ready(&pyrf_mmap_event__type); + if (err < 0) + goto out; + err = PyType_Ready(&pyrf_mmap2_event__type); if (err < 0) goto out; err = PyType_Ready(&pyrf_lost_event__type); @@ -805,6 +856,7 @@ static int pyrf_event__setup_types(void) static PyTypeObject *pyrf_event__type[] = { [PERF_RECORD_MMAP] = &pyrf_mmap_event__type, + [PERF_RECORD_MMAP2] = &pyrf_mmap2_event__type, [PERF_RECORD_LOST] = &pyrf_lost_event__type, [PERF_RECORD_COMM] = &pyrf_comm_event__type, [PERF_RECORD_EXIT] = &pyrf_task_event__type, @@ -971,6 +1023,11 @@ static PyObject *pyrf_event__new(const union perf_event *event, struct evsel *ev size_t max_len = pevent->event.header.size - offsetof(struct perf_record_mmap, filename); pevent->event.mmap.filename[max_len - 1] = '\0'; + } else if (event->header.type == PERF_RECORD_MMAP2) { + /* Ensure '\0' string termination. */ + size_t max_len = pevent->event.header.size - offsetof(struct perf_record_mmap2, filename); + + pevent->event.mmap2.filename[max_len - 1] = '\0'; } perf_sample__init(&pevent->sample, /*all=*/true); @@ -3234,6 +3291,9 @@ PyMODINIT_FUNC PyInit_perf(void) Py_INCREF(&pyrf_mmap_event__type); PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type); + Py_INCREF(&pyrf_mmap2_event__type); + PyModule_AddObject(module, "mmap2_event", (PyObject *)&pyrf_mmap2_event__type); + Py_INCREF(&pyrf_lost_event__type); PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type); -- 2.54.0.545.g6539524ca2-goog