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perf python: Add mmap2 event

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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 <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alice Rogers <alice.mei.rogers@gmail.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers
2026-06-15 18:15:34 -07:00
committed by Namhyung Kim
parent 600a22ef7e
commit 64344eee2d
1 changed files with 152 additions and 1 deletions
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153
tools/perf/util/python.c
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@@ -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 +174,147 @@ 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[] = {
@@ -801,6 +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);
@@ -830,6 +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,
@@ -876,6 +1021,9 @@ 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);
@@ -3330,6 +3478,9 @@ 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);