From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f74.google.com (mail-dl1-f74.google.com [74.125.82.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5BDB339934A for ; Sat, 13 Jun 2026 07:11:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781334697; cv=none; b=mt0p9O2pIBZXNXwVXCMBu+XXpu6k7+SV/2jwHSqVZotxs4xmjaJ2oaQfiGcEXePQtKrLYIW3M73TyNlwegTVzhBbepYV2bn7LScaqY4Jy/gpH0D/K8bVfu5a+paspzF1eXgAVfSVbABOYjhhrX2tcfaDZmkY+QEbNYvbVQZxXTY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781334697; c=relaxed/simple; bh=pwfGRJWxrQWat8kuCeWEb1cQlwT7QVWP6cwV9kDc5+4=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=gPX/9HnSLabf/MqPtmbfHJyd88LfkKloNsB/mwm852VMBnekcP6o1mVELJhgkK5e8KePe55Qu+N1mbv4kkkL86nlMZtfl2mFY/3UjXRRUaHxViLkG7hxSYIgkQk+1vM5TN6Jyw0BXefbjW4UG15myo94qTiRXw9ovust/36qenU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=JVbXc2WP; arc=none smtp.client-ip=74.125.82.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="JVbXc2WP" Received: by mail-dl1-f74.google.com with SMTP id a92af1059eb24-13840d96f21so1030216c88.1 for ; Sat, 13 Jun 2026 00:11:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781334689; x=1781939489; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=rrsthTgtb6BsRQ6VgT+DCrBAuCujLe7ZyxTlxSxcaaI=; b=JVbXc2WPEqS8z5+FgYcXSCg5mvOsESjwvcVWw0j8XX6kA6dzwte2p8WZ7U1XKv2ut2 WU4cERXrhDLGcU9eRvxcd5NMASekHX4Tg48QOUcte73/WVPoyBwq4dyL/jGITVt7BFKk 9gaIC2miUuSovQHu6aU4knEnbTGwLYPEC0BpHtsCNCucDBaZHj9numDO4InW647IDelE IKWgm/Jtm9NctJAVMAeEky8Xk47WsJeF7vScQ6X2Gzu8g+5FNCLO1RdWVzgA+cEOmX1C JUHvHi1eMTFnfPobnFCxUAeoNzLcrkjzULmeC4nJM2CJp1C/twwMj5bpJ5EaLdNWZ/WF zSXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781334689; x=1781939489; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=rrsthTgtb6BsRQ6VgT+DCrBAuCujLe7ZyxTlxSxcaaI=; b=YJjIbYZgHQwdllh4/NGiMDlBFAn5LIf3t2IMEV7f+K+a/hemHeCjwAhGn5IxI5MhlI Ru10HfVh962NowFX/9qERTj1u5ATsVdtPoEgLd/l/cshKsUlAszDTVivriXWb1Jopaa+ FtN9wyYBNvLI4c0TrbhsK16v3j9iXypVAibqey9HHrnVXaKIkMPM1OXA6FPwI2ss9Lst bQ3T+rYLz7vhEq/gsz3aYh07sY6tT5SEYtamFMfug0J+qYwz0Idmq4kKILByjNK8UzYq QctrjZvKGJHZyfNuAxr4boECJhiTnbBJbuXrOQT8a8e6N86XY4Pk1StzzWiuXrQx5kvE N3JQ== X-Forwarded-Encrypted: i=1; AFNElJ+d9lBFJ7PlaBNgJkO5m7NPk9H66/WRfixE/9IKuuCmBPDYNa5NdNRQXeq6I/6CPfJyLVMQ+X62wm65pSdQreew@vger.kernel.org X-Gm-Message-State: AOJu0YzeiuVgZQvPhrkMxQxImbZTuIW9I3Ptd215ST2+vVfV8WLndI0S i2VTUUi/d2LmljoNYqoAyIJkINw116DN8LQOdYnVnqbmcH9RV/GJwbXmTjhP6RJINfs/4bYeUBF xFa/kg4WYeg== X-Received: from dlbdz2.prod.google.com ([2002:a05:7022:ec2:b0:135:637f:2609]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7023:b81:b0:136:e42d:2c2b with SMTP id a92af1059eb24-1384bb6e0c2mr2919899c88.17.1781334688936; Sat, 13 Jun 2026 00:11:28 -0700 (PDT) Date: Sat, 13 Jun 2026 00:10:52 -0700 In-Reply-To: <20260613071100.1508192-1-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: <20260613052722.1424093-1-irogers@google.com> <20260613071100.1508192-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: <20260613071100.1508192-13-irogers@google.com> Subject: [PATCH v17 12/20] perf python: Add mmap2 event From: Ian Rogers To: irogers@google.com, 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-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, tmricht@linux.ibm.com Content-Type: text/plain; charset="UTF-8" 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 --- v12: - Used `copy_size` to bound `max_len` for NUL termination of mmap2 and comm events to fix an out-of-bounds write. --- tools/perf/util/python.c | 155 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 154 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index e64b83a10067..bf32b8381b3c 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -133,7 +133,7 @@ static const char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object."); static PyMemberDef pyrf_mmap_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_event_header, misc, T_USHORT, "event misc"), member_def(perf_record_mmap, pid, T_UINT, "event pid"), member_def(perf_record_mmap, tid, T_UINT, "event tid"), member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"), @@ -174,6 +174,149 @@ 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 PyObject *pyrf_mmap2_event__get_maj(PyObject *self, void *closure __maybe_unused) +{ + struct pyrf_event *pevent = (void *)self; + + if (pevent->event.header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) + Py_RETURN_NONE; + + return PyLong_FromUnsignedLong(pevent->event.mmap2.maj); +} + +static PyObject *pyrf_mmap2_event__get_min(PyObject *self, void *closure __maybe_unused) +{ + struct pyrf_event *pevent = (void *)self; + + if (pevent->event.header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) + Py_RETURN_NONE; + + return PyLong_FromUnsignedLong(pevent->event.mmap2.min); +} + +static PyObject *pyrf_mmap2_event__get_ino(PyObject *self, void *closure __maybe_unused) +{ + struct pyrf_event *pevent = (void *)self; + + if (pevent->event.header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) + Py_RETURN_NONE; + + return PyLong_FromUnsignedLongLong(pevent->event.mmap2.ino); +} + +static PyObject *pyrf_mmap2_event__get_ino_generation(PyObject *self, void *closure __maybe_unused) +{ + struct pyrf_event *pevent = (void *)self; + + if (pevent->event.header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) + Py_RETURN_NONE; + + return PyLong_FromUnsignedLongLong(pevent->event.mmap2.ino_generation); +} + +static PyObject *pyrf_mmap2_event__get_build_id(PyObject *self, void *closure __maybe_unused) +{ + struct pyrf_event *pevent = (void *)self; + + if (!(pevent->event.header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID)) + Py_RETURN_NONE; + + int size = pevent->event.mmap2.build_id_size; + + if (size > 20) + size = 20; + + return PyBytes_FromStringAndSize((const char *)pevent->event.mmap2.build_id, size); +} + +static PyGetSetDef pyrf_mmap2_event__getset[] = { + { + .name = "evsel", + .get = pyrf_event__get_evsel, + .set = NULL, + .doc = "tracking event.", + }, + { + .name = "maj", + .get = pyrf_mmap2_event__get_maj, + .set = NULL, + .doc = "major number.", + }, + { + .name = "min", + .get = pyrf_mmap2_event__get_min, + .set = NULL, + .doc = "minor number.", + }, + { + .name = "ino", + .get = pyrf_mmap2_event__get_ino, + .set = NULL, + .doc = "inode number.", + }, + { + .name = "ino_generation", + .get = pyrf_mmap2_event__get_ino_generation, + .set = NULL, + .doc = "inode generation.", + }, + { + .name = "build_id", + .get = pyrf_mmap2_event__get_build_id, + .set = NULL, + .doc = "binary build ID.", + }, + { .name = NULL, }, +}; + +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_USHORT, "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_mmap2_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[] = { @@ -799,6 +942,9 @@ 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); @@ -828,6 +974,7 @@ 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, @@ -873,6 +1020,9 @@ static PyObject *pyrf_event__new(const union perf_event *event, struct evsel *ev if (copy_size < sizeof(pevent->event)) memset((char *)&pevent->event + copy_size, 0, sizeof(pevent->event) - copy_size); + if (event->header.type == PERF_RECORD_MMAP2) + pevent->event.mmap2.filename[sizeof(pevent->event.mmap2.filename) - 1] = '\0'; + perf_sample__init(&pevent->sample, /*all=*/true); pevent->al_resolved = false; addr_location__init(&pevent->al); @@ -3314,6 +3464,9 @@ 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); -- 2.54.0.1136.gdb2ca164c4-goog