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laptops-kernel/tools/perf/util/python.c
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Ian RogersandNamhyung Kim e6ad1fb345 perf parse-events: Restrict core PMU bypass to --cputype option 
Commit b1c5efbfd9 ("perf parse-events: Remove hard coded legacy hardware
and cache parsing") introduced a bypass to PMU filtering to prevent uncore
PMUs from being filtered out during event parsing, which was required for
resolving `duration_time` and `uncore_freq` when running with `--cputype`.
However, this bypass was active whenever `pmu_filter` was set, which also
incorrectly bypassed filtering for the `--pmu-filter` option.

Introduce a `cputype_filter` boolean flag in `parse_events_state` and
`parse_events_option_args` to distinguish filtering initiated by
`--cputype` from that initiated by `--pmu-filter`. Restrict the core-only
check in `parse_events__filter_pmu()` to when `cputype_filter` is true.

Fixes: b1c5efbfd9 ("perf parse-events: Remove hard coded legacy hardware and cache parsing")
Assisted-by: Antigravity:gemini-3.1-pro
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2026-06-30 17:09:13 -07:00

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// SPDX-License-Identifier: GPL-2.0
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include <inttypes.h>
#include <linux/err.h>
#include <poll.h>
#include <unistd.h>
#include <internal/lib.h>
#include <perf/cpumap.h>
#include <perf/mmap.h>
#include <structmember.h>
#include "addr_location.h"
#include "build-id.h"
#include "callchain.h"
#include "comm.h"
#include "config.h"
#include "counts.h"
#include "data.h"
#include "debug.h"
#include "dso.h"
#include "dwarf-regs.h"
#include "event.h"
#include "branch.h"
#include "evlist.h"
#include "evsel.h"
#include "expr.h"
#include "map.h"
#include "metricgroup.h"
#include "mmap.h"
#include "pmus.h"
#include "print_binary.h"
#include "record.h"
#include "sample.h"
#include "session.h"
#include "srccode.h"
#include "srcline.h"
#include "strbuf.h"
#include "symbol.h"
#include "stat.h"
#include "header.h"
#include "trace/beauty/syscalltbl.h"
#include "thread.h"
#include "thread_map.h"
#include "tool.h"
#include "tp_pmu.h"
#include "trace-event.h"
#ifdef HAVE_LIBTRACEEVENT
#include <event-parse.h>
#endif
PyMODINIT_FUNC PyInit_perf(void);
static PyObject *pyrf_evsel__from_evsel(struct evsel *evsel);
#define member_def(type, member, ptype, help) \
{ #member, ptype, \
offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
0, help }
#define sample_member_def(name, member, ptype, help) \
{ #name, ptype, \
offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
0, help }
#define CHECK_INITIALIZED(ptr, msg) \
do { \
if (!(ptr)) { \
PyErr_SetString(PyExc_ValueError, msg " not initialized"); \
return NULL; \
} \
} while (0)
#define CHECK_INITIALIZED_INT(ptr, msg) \
do { \
if (!(ptr)) { \
PyErr_SetString(PyExc_ValueError, msg " not initialized"); \
return -1; \
} \
} while (0)
struct pyrf_event {
PyObject_HEAD
/** @sample: The parsed sample from the event. */
struct perf_sample sample;
/** @al: The address location from machine__resolve, lazily computed. */
struct addr_location al;
/** @al_resolved: True when machine__resolve been called. */
bool al_resolved;
/** @callchain: Resolved callchain, eagerly computed if requested. */
PyObject *callchain;
/** @brstack: Resolved branch stack, eagerly computed if requested. */
PyObject *brstack;
/** @event: The underlying perf_event that may be in a file or ring buffer. */
union perf_event event;
};
#define sample_members \
sample_member_def(sample_pid, pid, T_INT, "event pid"), \
sample_member_def(sample_tid, tid, T_INT, "event tid"), \
sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
static PyObject *pyrf_event__get_evsel(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_event *pevent = (void *)self;
if (!pevent->sample.evsel)
Py_RETURN_NONE;
return pyrf_evsel__from_evsel(pevent->sample.evsel);
}
static PyGetSetDef pyrf_event__getset[] = {
{
.name = "evsel",
.get = pyrf_event__get_evsel,
.set = NULL,
.doc = "tracking event.",
},
{ .name = NULL, },
};
static void pyrf_event__delete(struct pyrf_event *pevent)
{
if (pevent->al_resolved)
addr_location__exit(&pevent->al);
Py_XDECREF(pevent->callchain);
Py_XDECREF(pevent->brstack);
perf_sample__exit(&pevent->sample);
Py_TYPE(pevent)->tp_free((PyObject *)pevent);
}
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_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"),
member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
{ .name = NULL, },
};
static PyObject *pyrf_mmap_event__repr(const struct pyrf_event *pevent)
{
PyObject *ret;
char *s;
if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
"length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
"filename: %s }",
pevent->event.mmap.pid, pevent->event.mmap.tid,
pevent->event.mmap.start, pevent->event.mmap.len,
pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
ret = PyErr_NoMemory();
} else {
ret = PyUnicode_FromString(s);
free(s);
}
return ret;
}
static PyTypeObject pyrf_mmap_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.mmap_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_mmap_event__doc,
.tp_members = pyrf_mmap_event__members,
.tp_getset = pyrf_event__getset,
.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[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_fork, pid, T_UINT, "event pid"),
member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
member_def(perf_record_fork, tid, T_UINT, "event tid"),
member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
{ .name = NULL, },
};
static PyObject *pyrf_task_event__repr(const struct pyrf_event *pevent)
{
return PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
"ptid: %u, time: %" PRI_lu64 "}",
pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
pevent->event.fork.pid,
pevent->event.fork.ppid,
pevent->event.fork.tid,
pevent->event.fork.ptid,
pevent->event.fork.time);
}
static PyTypeObject pyrf_task_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.task_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_task_event__doc,
.tp_members = pyrf_task_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_task_event__repr,
};
static const char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
static PyMemberDef pyrf_comm_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_comm, pid, T_UINT, "event pid"),
member_def(perf_record_comm, tid, T_UINT, "event tid"),
member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
{ .name = NULL, },
};
static PyObject *pyrf_comm_event__repr(const struct pyrf_event *pevent)
{
return PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
pevent->event.comm.pid,
pevent->event.comm.tid,
pevent->event.comm.comm);
}
static PyTypeObject pyrf_comm_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.comm_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_comm_event__doc,
.tp_members = pyrf_comm_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_comm_event__repr,
};
static const char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
static PyMemberDef pyrf_throttle_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
{ .name = NULL, },
};
static PyObject *pyrf_throttle_event__repr(const struct pyrf_event *pevent)
{
const struct perf_record_throttle *te = (const struct perf_record_throttle *)
(&pevent->event.header + 1);
return PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
", stream_id: %" PRI_lu64 " }",
pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
te->time, te->id, te->stream_id);
}
static PyTypeObject pyrf_throttle_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.throttle_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_throttle_event__doc,
.tp_members = pyrf_throttle_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_throttle_event__repr,
};
static const char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
static PyMemberDef pyrf_lost_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
{ .name = NULL, },
};
static PyObject *pyrf_lost_event__repr(const struct pyrf_event *pevent)
{
PyObject *ret;
char *s;
if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
"lost: %#" PRI_lx64 " }",
pevent->event.lost.id, pevent->event.lost.lost) < 0) {
ret = PyErr_NoMemory();
} else {
ret = PyUnicode_FromString(s);
free(s);
}
return ret;
}
static PyTypeObject pyrf_lost_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.lost_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_lost_event__doc,
.tp_members = pyrf_lost_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_lost_event__repr,
};
static const char pyrf_stat_event__doc[] = PyDoc_STR("perf stat event object.");
static PyMemberDef pyrf_stat_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_stat, id, T_ULONGLONG, "event id"),
member_def(perf_record_stat, cpu, T_UINT, "event cpu"),
member_def(perf_record_stat, thread, T_UINT, "event thread"),
member_def(perf_record_stat, val, T_ULONGLONG, "counter value"),
member_def(perf_record_stat, ena, T_ULONGLONG, "enabled time"),
member_def(perf_record_stat, run, T_ULONGLONG, "running time"),
{ .name = NULL, },
};
static PyObject *pyrf_stat_event__repr(const struct pyrf_event *pevent)
{
return PyUnicode_FromFormat(
"{ type: stat, id: %llu, cpu: %u, thread: %u, val: %llu, ena: %llu, run: %llu }",
pevent->event.stat.id,
pevent->event.stat.cpu,
pevent->event.stat.thread,
pevent->event.stat.val,
pevent->event.stat.ena,
pevent->event.stat.run);
}
static PyTypeObject pyrf_stat_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.stat_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_new = PyType_GenericNew,
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_stat_event__doc,
.tp_members = pyrf_stat_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_stat_event__repr,
};
static const char pyrf_stat_round_event__doc[] = PyDoc_STR("perf stat round event object.");
static PyMemberDef pyrf_stat_round_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
{ .name = "stat_round_type", .type = T_ULONGLONG,
.offset = offsetof(struct pyrf_event, event) + offsetof(struct perf_record_stat_round, type),
.doc = "round type" },
member_def(perf_record_stat_round, time, T_ULONGLONG, "round time"),
{ .name = NULL, },
};
static PyObject *pyrf_stat_round_event__repr(const struct pyrf_event *pevent)
{
return PyUnicode_FromFormat("{ type: stat_round, type: %llu, time: %llu }",
pevent->event.stat_round.type,
pevent->event.stat_round.time);
}
static PyTypeObject pyrf_stat_round_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.stat_round_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_new = PyType_GenericNew,
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_stat_round_event__doc,
.tp_members = pyrf_stat_round_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_stat_round_event__repr,
};
static const char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
static PyMemberDef pyrf_read_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_read, pid, T_UINT, "event pid"),
member_def(perf_record_read, tid, T_UINT, "event tid"),
{ .name = NULL, },
};
static PyObject *pyrf_read_event__repr(const struct pyrf_event *pevent)
{
return PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
pevent->event.read.pid,
pevent->event.read.tid);
/*
* FIXME: return the array of read values,
* making this method useful ;-)
*/
}
static PyTypeObject pyrf_read_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.read_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_read_event__doc,
.tp_members = pyrf_read_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_read_event__repr,
};
static const char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
static PyMemberDef pyrf_sample_event__members[] = {
sample_members
sample_member_def(sample_ip, ip, T_ULONGLONG, "event ip"),
sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),
sample_member_def(sample_phys_addr, phys_addr, T_ULONGLONG, "event physical addr"),
sample_member_def(sample_weight, weight, T_ULONGLONG, "event weight"),
sample_member_def(sample_data_src, data_src, T_ULONGLONG, "event data source"),
sample_member_def(sample_insn_count, insn_cnt, T_ULONGLONG, "event instruction count"),
sample_member_def(sample_cyc_count, cyc_cnt, T_ULONGLONG, "event cycle count"),
member_def(perf_event_header, type, T_UINT, "event type"),
{ .name = NULL, },
};
static PyObject *pyrf_sample_event__repr(const struct pyrf_event *pevent)
{
PyObject *ret;
char *s;
if (asprintf(&s, "{ type: sample }") < 0) {
ret = PyErr_NoMemory();
} else {
ret = PyUnicode_FromString(s);
free(s);
}
return ret;
}
#ifdef HAVE_LIBTRACEEVENT
static bool is_tracepoint(const struct pyrf_event *pevent)
{
if (!pevent->sample.evsel)
return false;
return pevent->sample.evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
}
static PyObject*
tracepoint_field(const struct pyrf_event *pe, struct tep_format_field *field)
{
struct tep_handle *pevent = field->event->tep;
void *data = pe->sample.raw_data;
PyObject *ret = NULL;
unsigned long long val;
unsigned int offset, len;
if (field->flags & TEP_FIELD_IS_ARRAY) {
offset = field->offset;
len = field->size;
if (field->flags & TEP_FIELD_IS_DYNAMIC) {
val = tep_read_number(pevent, data + offset, len);
offset = val;
len = offset >> 16;
offset &= 0xffff;
if (tep_field_is_relative(field->flags))
offset += field->offset + field->size;
}
if (field->flags & TEP_FIELD_IS_STRING &&
is_printable_array(data + offset, len)) {
ret = PyUnicode_FromString((char *)data + offset);
} else {
ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
field->flags &= ~TEP_FIELD_IS_STRING;
}
} else {
val = tep_read_number(pevent, data + field->offset,
field->size);
if (field->flags & TEP_FIELD_IS_POINTER)
ret = PyLong_FromUnsignedLong((unsigned long) val);
else if (field->flags & TEP_FIELD_IS_SIGNED)
ret = PyLong_FromLong((long) val);
else
ret = PyLong_FromUnsignedLong((unsigned long) val);
}
return ret;
}
static PyObject*
get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
{
struct evsel *evsel = pevent->sample.evsel;
struct tep_event *tp_format = evsel__tp_format(evsel);
struct tep_format_field *field;
if (IS_ERR_OR_NULL(tp_format))
return NULL;
PyObject *obj = PyObject_Str(attr_name);
if (obj == NULL)
return NULL;
const char *str = PyUnicode_AsUTF8(obj);
if (str == NULL) {
Py_DECREF(obj);
return NULL;
}
field = tep_find_any_field(tp_format, str);
Py_DECREF(obj);
return field ? tracepoint_field(pevent, field) : NULL;
}
#endif /* HAVE_LIBTRACEEVENT */
static int pyrf_sample_event__resolve_al(struct pyrf_event *pevent)
{
struct evsel *evsel = pevent->sample.evsel;
struct evlist *evlist = evsel ? evsel->evlist : NULL;
struct perf_session *session = evlist ? evlist__session(evlist) : NULL;
if (pevent->al_resolved)
return 0;
if (!session)
return -1;
addr_location__init(&pevent->al);
if (machine__resolve(&session->machines.host, &pevent->al, &pevent->sample) < 0) {
addr_location__exit(&pevent->al);
return -1;
}
pevent->al_resolved = true;
return 0;
}
static PyObject *pyrf_sample_event__get_dso(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.map)
Py_RETURN_NONE;
return PyUnicode_FromString(dso__name(map__dso(pevent->al.map)));
}
static PyObject *pyrf_sample_event__get_dso_long_name(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.map)
Py_RETURN_NONE;
return PyUnicode_FromString(dso__long_name(map__dso(pevent->al.map)));
}
static PyObject *pyrf_sample_event__get_dso_bid(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
char sbuild_id[SBUILD_ID_SIZE];
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.map)
Py_RETURN_NONE;
build_id__snprintf(dso__bid(map__dso(pevent->al.map)), sbuild_id, sizeof(sbuild_id));
return PyUnicode_FromString(sbuild_id);
}
static PyObject *pyrf_sample_event__get_map_start(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.map)
Py_RETURN_NONE;
return PyLong_FromUnsignedLong(map__start(pevent->al.map));
}
static PyObject *pyrf_sample_event__get_map_end(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.map)
Py_RETURN_NONE;
return PyLong_FromUnsignedLong(map__end(pevent->al.map));
}
static PyObject *pyrf_sample_event__get_map_pgoff(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.map)
Py_RETURN_NONE;
return PyLong_FromUnsignedLongLong(map__pgoff(pevent->al.map));
}
static PyObject *pyrf_sample_event__get_symbol(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.sym)
Py_RETURN_NONE;
return PyUnicode_FromString(pevent->al.sym->name);
}
static PyObject *pyrf_sample_event__get_sym_start(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.sym)
Py_RETURN_NONE;
return PyLong_FromUnsignedLongLong(pevent->al.sym->start);
}
static PyObject *pyrf_sample_event__get_sym_end(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pyrf_sample_event__resolve_al(pevent) < 0 || !pevent->al.sym)
Py_RETURN_NONE;
return PyLong_FromUnsignedLongLong(pevent->al.sym->end);
}
static PyObject *pyrf_sample_event__get_raw_buf(struct pyrf_event *pevent,
void *closure __maybe_unused)
{
if (pevent->event.header.type != PERF_RECORD_SAMPLE)
Py_RETURN_NONE;
return PyBytes_FromStringAndSize((const char *)pevent->sample.raw_data,
pevent->sample.raw_size);
}
static PyObject *pyrf_sample_event__srccode(PyObject *self, PyObject *args)
{
struct pyrf_event *pevent = (void *)self;
u64 addr = pevent->sample.ip;
char *srcfile = NULL;
char *srccode = NULL;
unsigned int line = 0;
int len = 0;
PyObject *result;
struct addr_location al;
if (!PyArg_ParseTuple(args, "|K", &addr))
return NULL;
if (pyrf_sample_event__resolve_al(pevent) < 0)
Py_RETURN_NONE;
if (addr != pevent->sample.ip) {
addr_location__init(&al);
thread__find_symbol_fb(pevent->al.thread, pevent->sample.cpumode, addr, &al);
} else {
addr_location__init(&al);
al.thread = thread__get(pevent->al.thread);
al.map = map__get(pevent->al.map);
al.sym = pevent->al.sym;
al.addr = pevent->al.addr;
}
if (al.map) {
struct dso *dso = map__dso(al.map);
if (dso) {
srcfile = get_srcline_split(dso, map__rip_2objdump(al.map, addr),
&line);
}
}
addr_location__exit(&al);
if (srcfile) {
srccode = find_sourceline(srcfile, line, &len);
result = Py_BuildValue("(sIs#)", srcfile, line, srccode, (Py_ssize_t)len);
free(srcfile);
} else {
result = Py_BuildValue("(sIs#)", NULL, 0, NULL, (Py_ssize_t)0);
}
return result;
}
static PyObject *pyrf_sample_event__insn(PyObject *self, PyObject *args __maybe_unused)
{
struct pyrf_event *pevent = (void *)self;
struct thread *thread;
struct machine *machine;
if (pyrf_sample_event__resolve_al(pevent) < 0)
Py_RETURN_NONE;
thread = pevent->al.thread;
if (!thread || !thread__maps(thread))
Py_RETURN_NONE;
machine = maps__machine(thread__maps(thread));
if (!machine)
Py_RETURN_NONE;
if (pevent->sample.ip && !pevent->sample.insn_len)
perf_sample__fetch_insn(&pevent->sample, thread, machine);
if (!pevent->sample.insn_len)
Py_RETURN_NONE;
return PyBytes_FromStringAndSize((const char *)pevent->sample.insn,
pevent->sample.insn_len);
}
struct pyrf_callchain_node {
PyObject_HEAD
u64 ip;
struct map *map;
struct symbol *sym;
};
static void pyrf_callchain_node__delete(struct pyrf_callchain_node *pnode)
{
map__put(pnode->map);
Py_TYPE(pnode)->tp_free((PyObject *)pnode);
}
static PyObject *pyrf_callchain_node__get_ip(struct pyrf_callchain_node *pnode,
void *closure __maybe_unused)
{
return PyLong_FromUnsignedLongLong(pnode->ip);
}
static PyObject *pyrf_callchain_node__get_symbol(struct pyrf_callchain_node *pnode,
void *closure __maybe_unused)
{
if (pnode->sym)
return PyUnicode_FromString(pnode->sym->name);
return PyUnicode_FromString("[unknown]");
}
static PyObject *pyrf_callchain_node__get_dso(struct pyrf_callchain_node *pnode,
void *closure __maybe_unused)
{
const char *dsoname = "[unknown]";
if (pnode->map) {
struct dso *dso = map__dso(pnode->map);
if (dso) {
if (symbol_conf.show_kernel_path && dso__long_name(dso))
dsoname = dso__long_name(dso);
else
dsoname = dso__name(dso);
}
}
return PyUnicode_FromString(dsoname);
}
static PyGetSetDef pyrf_callchain_node__getset[] = {
{ .name = "ip", .get = (getter)pyrf_callchain_node__get_ip, },
{ .name = "symbol", .get = (getter)pyrf_callchain_node__get_symbol, },
{ .name = "dso", .get = (getter)pyrf_callchain_node__get_dso, },
{ .name = NULL, },
};
static PyTypeObject pyrf_callchain_node__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.callchain_node",
.tp_basicsize = sizeof(struct pyrf_callchain_node),
.tp_dealloc = (destructor)pyrf_callchain_node__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = "perf callchain node object.",
.tp_getset = pyrf_callchain_node__getset,
};
struct pyrf_callchain_frame {
u64 ip;
struct map *map;
struct symbol *sym;
};
struct pyrf_callchain {
PyObject_HEAD
struct pyrf_callchain_frame *frames;
u64 nr_frames;
};
static void pyrf_callchain__delete(struct pyrf_callchain *pchain)
{
if (pchain->frames) {
for (u64 i = 0; i < pchain->nr_frames; i++)
map__put(pchain->frames[i].map);
free(pchain->frames);
}
Py_TYPE(pchain)->tp_free((PyObject *)pchain);
}
static Py_ssize_t pyrf_callchain__length(PyObject *obj)
{
struct pyrf_callchain *pchain = (void *)obj;
return pchain->nr_frames;
}
static PyObject *pyrf_callchain__item(PyObject *obj, Py_ssize_t i)
{
struct pyrf_callchain *pchain = (void *)obj;
struct pyrf_callchain_node *pnode;
if (i < 0 || i >= (Py_ssize_t)pchain->nr_frames) {
PyErr_SetString(PyExc_IndexError, "Index out of range");
return NULL;
}
pnode = PyObject_New(struct pyrf_callchain_node, &pyrf_callchain_node__type);
if (!pnode)
return NULL;
pnode->ip = pchain->frames[i].ip;
pnode->map = map__get(pchain->frames[i].map);
pnode->sym = pchain->frames[i].sym;
return (PyObject *)pnode;
}
static PySequenceMethods pyrf_callchain__sequence_methods = {
.sq_length = pyrf_callchain__length,
.sq_item = pyrf_callchain__item,
};
static PyTypeObject pyrf_callchain__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.callchain",
.tp_basicsize = sizeof(struct pyrf_callchain),
.tp_dealloc = (destructor)pyrf_callchain__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = "perf callchain object.",
.tp_as_sequence = &pyrf_callchain__sequence_methods,
};
static PyObject *pyrf_sample_event__get_callchain(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_event *pevent = (void *)self;
if (!pevent->callchain)
Py_RETURN_NONE;
Py_INCREF(pevent->callchain);
return pevent->callchain;
}
struct pyrf_branch_entry {
PyObject_HEAD
u64 from;
u64 to;
struct branch_flags flags;
};
static void pyrf_branch_entry__delete(struct pyrf_branch_entry *pentry)
{
Py_TYPE(pentry)->tp_free((PyObject *)pentry);
}
static PyObject *pyrf_branch_entry__get_from(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyLong_FromUnsignedLongLong(pentry->from);
}
static PyObject *pyrf_branch_entry__get_to(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyLong_FromUnsignedLongLong(pentry->to);
}
static PyObject *pyrf_branch_entry__get_mispred(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyBool_FromLong(pentry->flags.mispred);
}
static PyObject *pyrf_branch_entry__get_predicted(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyBool_FromLong(pentry->flags.predicted);
}
static PyObject *pyrf_branch_entry__get_in_tx(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyBool_FromLong(pentry->flags.in_tx);
}
static PyObject *pyrf_branch_entry__get_abort(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyBool_FromLong(pentry->flags.abort);
}
static PyObject *pyrf_branch_entry__get_cycles(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyLong_FromUnsignedLongLong(pentry->flags.cycles);
}
static PyObject *pyrf_branch_entry__get_type(struct pyrf_branch_entry *pentry,
void *closure __maybe_unused)
{
return PyLong_FromUnsignedLongLong((unsigned long long)pentry->flags.type);
}
static PyGetSetDef pyrf_branch_entry__getset[] = {
{ .name = "from_ip", .get = (getter)pyrf_branch_entry__get_from, },
{ .name = "to_ip", .get = (getter)pyrf_branch_entry__get_to, },
{ .name = "mispred", .get = (getter)pyrf_branch_entry__get_mispred, },
{ .name = "predicted", .get = (getter)pyrf_branch_entry__get_predicted, },
{ .name = "in_tx", .get = (getter)pyrf_branch_entry__get_in_tx, },
{ .name = "abort", .get = (getter)pyrf_branch_entry__get_abort, },
{ .name = "cycles", .get = (getter)pyrf_branch_entry__get_cycles, },
{ .name = "type", .get = (getter)pyrf_branch_entry__get_type, },
{ .name = NULL, },
};
static PyTypeObject pyrf_branch_entry__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.branch_entry",
.tp_basicsize = sizeof(struct pyrf_branch_entry),
.tp_dealloc = (destructor)pyrf_branch_entry__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = "perf branch entry object.",
.tp_getset = pyrf_branch_entry__getset,
};
struct pyrf_branch_stack {
PyObject_HEAD
struct branch_entry *entries;
u64 nr;
};
static void pyrf_branch_stack__delete(struct pyrf_branch_stack *pstack)
{
free(pstack->entries);
Py_TYPE(pstack)->tp_free((PyObject *)pstack);
}
static Py_ssize_t pyrf_branch_stack__length(PyObject *obj)
{
struct pyrf_branch_stack *pstack = (void *)obj;
return pstack->nr;
}
static PyObject *pyrf_branch_stack__item(PyObject *obj, Py_ssize_t i)
{
struct pyrf_branch_stack *pstack = (void *)obj;
struct pyrf_branch_entry *pentry;
if (i < 0 || i >= (Py_ssize_t)pstack->nr) {
PyErr_SetString(PyExc_IndexError, "Index out of range");
return NULL;
}
pentry = PyObject_New(struct pyrf_branch_entry, &pyrf_branch_entry__type);
if (!pentry)
return NULL;
pentry->from = pstack->entries[i].from;
pentry->to = pstack->entries[i].to;
pentry->flags = pstack->entries[i].flags;
return (PyObject *)pentry;
}
static PySequenceMethods pyrf_branch_stack__sequence_methods = {
.sq_length = pyrf_branch_stack__length,
.sq_item = pyrf_branch_stack__item,
};
static PyTypeObject pyrf_branch_stack__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.branch_stack",
.tp_basicsize = sizeof(struct pyrf_branch_stack),
.tp_dealloc = (destructor)pyrf_branch_stack__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = "perf branch stack object.",
.tp_as_sequence = &pyrf_branch_stack__sequence_methods,
};
static PyObject *pyrf_sample_event__get_brstack(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_event *pevent = (void *)self;
if (!pevent->brstack)
Py_RETURN_NONE;
Py_INCREF(pevent->brstack);
return pevent->brstack;
}
static PyObject*
pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
{
PyObject *obj = NULL;
#ifdef HAVE_LIBTRACEEVENT
if (is_tracepoint(pevent))
obj = get_tracepoint_field(pevent, attr_name);
#endif
return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
}
static PyGetSetDef pyrf_sample_event__getset[] = {
{
.name = "callchain",
.get = pyrf_sample_event__get_callchain,
.set = NULL,
.doc = "event callchain.",
},
{
.name = "brstack",
.get = pyrf_sample_event__get_brstack,
.set = NULL,
.doc = "event branch stack.",
},
{
.name = "raw_buf",
.get = (getter)pyrf_sample_event__get_raw_buf,
.set = NULL,
.doc = "event raw buffer.",
},
{
.name = "evsel",
.get = pyrf_event__get_evsel,
.set = NULL,
.doc = "tracking event.",
},
{
.name = "dso",
.get = (getter)pyrf_sample_event__get_dso,
.set = NULL,
.doc = "event dso short name.",
},
{
.name = "dso_long_name",
.get = (getter)pyrf_sample_event__get_dso_long_name,
.set = NULL,
.doc = "event dso long name.",
},
{
.name = "dso_bid",
.get = (getter)pyrf_sample_event__get_dso_bid,
.set = NULL,
.doc = "event dso build id.",
},
{
.name = "map_start",
.get = (getter)pyrf_sample_event__get_map_start,
.set = NULL,
.doc = "event map start address.",
},
{
.name = "map_end",
.get = (getter)pyrf_sample_event__get_map_end,
.set = NULL,
.doc = "event map end address.",
},
{
.name = "map_pgoff",
.get = (getter)pyrf_sample_event__get_map_pgoff,
.set = NULL,
.doc = "event map page offset.",
},
{
.name = "symbol",
.get = (getter)pyrf_sample_event__get_symbol,
.set = NULL,
.doc = "event symbol name.",
},
{
.name = "sym_start",
.get = (getter)pyrf_sample_event__get_sym_start,
.set = NULL,
.doc = "event symbol start address.",
},
{
.name = "sym_end",
.get = (getter)pyrf_sample_event__get_sym_end,
.set = NULL,
.doc = "event symbol end address.",
},
{ .name = NULL, },
};
static PyMethodDef pyrf_sample_event__methods[] = {
{
.ml_name = "srccode",
.ml_meth = (PyCFunction)pyrf_sample_event__srccode,
.ml_flags = METH_VARARGS,
.ml_doc = PyDoc_STR("Get source code for an address.")
},
{
.ml_name = "insn",
.ml_meth = (PyCFunction)pyrf_sample_event__insn,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Get instruction bytes for a sample.")
},
{ .ml_name = NULL, }
};
static PyTypeObject pyrf_sample_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.sample_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_sample_event__doc,
.tp_members = pyrf_sample_event__members,
.tp_getset = pyrf_sample_event__getset,
.tp_methods = pyrf_sample_event__methods,
.tp_repr = (reprfunc)pyrf_sample_event__repr,
.tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
};
static const char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
static PyMemberDef pyrf_context_switch_event__members[] = {
sample_members
member_def(perf_event_header, type, T_UINT, "event type"),
member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
{ .name = NULL, },
};
static PyObject *pyrf_context_switch_event__repr(const struct pyrf_event *pevent)
{
PyObject *ret;
char *s;
if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
pevent->event.context_switch.next_prev_pid,
pevent->event.context_switch.next_prev_tid,
!!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
ret = PyErr_NoMemory();
} else {
ret = PyUnicode_FromString(s);
free(s);
}
return ret;
}
static PyTypeObject pyrf_context_switch_event__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.context_switch_event",
.tp_basicsize = sizeof(struct pyrf_event),
.tp_dealloc = (destructor)pyrf_event__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_context_switch_event__doc,
.tp_members = pyrf_context_switch_event__members,
.tp_getset = pyrf_event__getset,
.tp_repr = (reprfunc)pyrf_context_switch_event__repr,
};
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);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_task_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_comm_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_throttle_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_read_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_sample_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_context_switch_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_stat_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_stat_round_event__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_callchain_node__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_callchain__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_branch_entry__type);
if (err < 0)
goto out;
err = PyType_Ready(&pyrf_branch_stack__type);
if (err < 0)
goto out;
out:
return err;
}
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,
[PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
[PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
[PERF_RECORD_FORK] = &pyrf_task_event__type,
[PERF_RECORD_READ] = &pyrf_read_event__type,
[PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
[PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
[PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
[PERF_RECORD_STAT] = &pyrf_stat_event__type,
[PERF_RECORD_STAT_ROUND] = &pyrf_stat_round_event__type,
};
static PyObject *pyrf_event__new(const union perf_event *event, struct evsel *evsel,
struct perf_session *session,
struct machine *machine)
{
struct pyrf_event *pevent;
struct perf_sample *sample;
int err;
u32 min_size;
bool needs_swap;
if (!machine)
machine = session ? &session->machines.host : NULL;
if (event->header.type >= ARRAY_SIZE(pyrf_event__type) ||
pyrf_event__type[event->header.type] == NULL) {
return PyErr_Format(PyExc_TypeError, "Unexpected header type %u",
event->header.type);
}
if (perf_event__too_small(event, &min_size)) {
return PyErr_Format(PyExc_ValueError, "Event size %u too small for type %u",
event->header.size, event->header.type);
}
size_t copy_size = event->header.size;
if (copy_size > sizeof(pevent->event)) {
return PyErr_Format(PyExc_TypeError, "Unexpected event size: %zd < %zu",
sizeof(pevent->event), copy_size);
}
pevent = PyObject_New(struct pyrf_event, pyrf_event__type[event->header.type]);
if (pevent == NULL)
return PyErr_NoMemory();
/* Copy the event for memory safety and initialize variables. */
memcpy(&pevent->event, event, copy_size);
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->callchain = NULL;
pevent->brstack = NULL;
pevent->al_resolved = false;
addr_location__init(&pevent->al);
if (!evsel)
return (PyObject *)pevent;
/* Parse the sample again so that pointers are within the copied event. */
needs_swap = evsel->needs_swap;
evsel->needs_swap = false;
err = evsel__parse_sample(evsel, &pevent->event, &pevent->sample);
evsel->needs_swap = needs_swap;
if (err < 0) {
Py_DECREF(pevent);
return PyErr_Format(PyExc_OSError,
"perf: can't parse sample, err=%d", err);
}
sample = &pevent->sample;
if (machine && sample->callchain) {
struct addr_location al;
struct callchain_cursor *cursor;
u64 i;
struct pyrf_callchain *pchain;
addr_location__init(&al);
if (machine__resolve(machine, &al, sample) >= 0) {
cursor = get_tls_callchain_cursor();
if (thread__resolve_callchain(al.thread, cursor, sample,
NULL, NULL, PERF_MAX_STACK_DEPTH) == 0) {
callchain_cursor_commit(cursor);
pchain = PyObject_New(struct pyrf_callchain, &pyrf_callchain__type);
if (!pchain) {
addr_location__exit(&al);
Py_DECREF(pevent);
return NULL;
}
pchain->nr_frames = cursor->nr;
pchain->frames = calloc(pchain->nr_frames,
sizeof(*pchain->frames));
if (!pchain->frames) {
Py_DECREF(pchain);
addr_location__exit(&al);
Py_DECREF(pevent);
return PyErr_NoMemory();
}
struct callchain_cursor_node *node;
for (i = 0; i < pchain->nr_frames; i++) {
node = callchain_cursor_current(cursor);
pchain->frames[i].ip = node->ip;
pchain->frames[i].map =
map__get(node->ms.map);
pchain->frames[i].sym = node->ms.sym;
callchain_cursor_advance(cursor);
}
pevent->callchain = (PyObject *)pchain;
}
addr_location__exit(&al);
}
}
if (sample->branch_stack) {
struct branch_stack *bs = sample->branch_stack;
struct branch_entry *entries = perf_sample__branch_entries(sample);
struct pyrf_branch_stack *pstack;
pstack = PyObject_New(struct pyrf_branch_stack, &pyrf_branch_stack__type);
if (!pstack) {
Py_DECREF(pevent);
return NULL;
}
pstack->nr = bs->nr;
pstack->entries = calloc(bs->nr, sizeof(struct branch_entry));
if (!pstack->entries) {
Py_DECREF(pstack);
Py_DECREF(pevent);
return PyErr_NoMemory();
}
memcpy(pstack->entries, entries,
bs->nr * sizeof(struct branch_entry));
pevent->brstack = (PyObject *)pstack;
}
return (PyObject *)pevent;
}
struct pyrf_cpu_map {
PyObject_HEAD
struct perf_cpu_map *cpus;
};
static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = { "cpustr", NULL };
char *cpustr = NULL;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
kwlist, &cpustr))
return -1;
pcpus->cpus = perf_cpu_map__new(cpustr);
if (pcpus->cpus == NULL)
return -1;
return 0;
}
static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
{
perf_cpu_map__put(pcpus->cpus);
Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
}
static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
{
struct pyrf_cpu_map *pcpus = (void *)obj;
return perf_cpu_map__nr(pcpus->cpus);
}
static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
{
struct pyrf_cpu_map *pcpus = (void *)obj;
if (i >= perf_cpu_map__nr(pcpus->cpus)) {
PyErr_SetString(PyExc_IndexError, "Index out of range");
return NULL;
}
return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
}
static PySequenceMethods pyrf_cpu_map__sequence_methods = {
.sq_length = pyrf_cpu_map__length,
.sq_item = pyrf_cpu_map__item,
};
static const char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
static PyTypeObject pyrf_cpu_map__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.cpu_map",
.tp_basicsize = sizeof(struct pyrf_cpu_map),
.tp_dealloc = (destructor)pyrf_cpu_map__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_cpu_map__doc,
.tp_as_sequence = &pyrf_cpu_map__sequence_methods,
.tp_init = (initproc)pyrf_cpu_map__init,
};
static int pyrf_cpu_map__setup_types(void)
{
pyrf_cpu_map__type.tp_new = PyType_GenericNew;
return PyType_Ready(&pyrf_cpu_map__type);
}
struct pyrf_thread_map {
PyObject_HEAD
struct perf_thread_map *threads;
};
static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = { "pid", "tid", NULL };
int pid = -1, tid = -1;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii",
kwlist, &pid, &tid))
return -1;
pthreads->threads = thread_map__new(pid, tid);
if (pthreads->threads == NULL)
return -1;
return 0;
}
static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
{
perf_thread_map__put(pthreads->threads);
Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
}
static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
{
struct pyrf_thread_map *pthreads = (void *)obj;
return perf_thread_map__nr(pthreads->threads);
}
static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
{
struct pyrf_thread_map *pthreads = (void *)obj;
if (i >= perf_thread_map__nr(pthreads->threads)) {
PyErr_SetString(PyExc_IndexError, "Index out of range");
return NULL;
}
return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
}
static PySequenceMethods pyrf_thread_map__sequence_methods = {
.sq_length = pyrf_thread_map__length,
.sq_item = pyrf_thread_map__item,
};
static const char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
static PyTypeObject pyrf_thread_map__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.thread_map",
.tp_basicsize = sizeof(struct pyrf_thread_map),
.tp_dealloc = (destructor)pyrf_thread_map__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_thread_map__doc,
.tp_as_sequence = &pyrf_thread_map__sequence_methods,
.tp_init = (initproc)pyrf_thread_map__init,
};
static int pyrf_thread_map__setup_types(void)
{
pyrf_thread_map__type.tp_new = PyType_GenericNew;
return PyType_Ready(&pyrf_thread_map__type);
}
/**
* A python wrapper for perf_pmus that are globally owned by the pmus.c code.
*/
struct pyrf_pmu {
PyObject_HEAD
struct perf_pmu *pmu;
};
static void pyrf_pmu__delete(struct pyrf_pmu *ppmu)
{
Py_TYPE(ppmu)->tp_free((PyObject *)ppmu);
}
static PyObject *pyrf_pmu__name(PyObject *self)
{
struct pyrf_pmu *ppmu = (void *)self;
return PyUnicode_FromString(ppmu->pmu->name);
}
static bool add_to_dict(PyObject *dict, const char *key, const char *value)
{
PyObject *pkey, *pvalue;
bool ret;
if (value == NULL)
return true;
pkey = PyUnicode_FromString(key);
pvalue = PyUnicode_FromString(value);
ret = pkey && pvalue && PyDict_SetItem(dict, pkey, pvalue) == 0;
Py_XDECREF(pkey);
Py_XDECREF(pvalue);
return ret;
}
static int pyrf_pmu__events_cb(void *state, struct pmu_event_info *info)
{
PyObject *py_list = state;
PyObject *dict = PyDict_New();
if (!dict)
return -ENOMEM;
if (!add_to_dict(dict, "name", info->name) ||
!add_to_dict(dict, "alias", info->alias) ||
!add_to_dict(dict, "scale_unit", info->scale_unit) ||
!add_to_dict(dict, "desc", info->desc) ||
!add_to_dict(dict, "long_desc", info->long_desc) ||
!add_to_dict(dict, "encoding_desc", info->encoding_desc) ||
!add_to_dict(dict, "topic", info->topic) ||
!add_to_dict(dict, "event_type_desc", info->event_type_desc) ||
!add_to_dict(dict, "str", info->str) ||
!add_to_dict(dict, "deprecated", info->deprecated ? "deprecated" : NULL) ||
PyList_Append(py_list, dict) != 0) {
Py_DECREF(dict);
return -ENOMEM;
}
Py_DECREF(dict);
return 0;
}
static PyObject *pyrf_pmu__events(PyObject *self)
{
struct pyrf_pmu *ppmu = (void *)self;
PyObject *py_list = PyList_New(0);
int ret;
if (!py_list)
return NULL;
ret = perf_pmu__for_each_event(ppmu->pmu,
/*skip_duplicate_pmus=*/false,
py_list,
pyrf_pmu__events_cb);
if (ret) {
Py_DECREF(py_list);
errno = -ret;
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
return py_list;
}
static PyObject *pyrf_pmu__repr(PyObject *self)
{
struct pyrf_pmu *ppmu = (void *)self;
return PyUnicode_FromFormat("pmu(%s)", ppmu->pmu->name);
}
static const char pyrf_pmu__doc[] = PyDoc_STR("perf Performance Monitoring Unit (PMU) object.");
static PyMethodDef pyrf_pmu__methods[] = {
{
.ml_name = "events",
.ml_meth = (PyCFunction)pyrf_pmu__events,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Returns a sequence of events encoded as a dictionaries.")
},
{
.ml_name = "name",
.ml_meth = (PyCFunction)pyrf_pmu__name,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Name of the PMU including suffixes.")
},
{ .ml_name = NULL, }
};
/** The python type for a perf.pmu. */
static PyTypeObject pyrf_pmu__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.pmu",
.tp_basicsize = sizeof(struct pyrf_pmu),
.tp_dealloc = (destructor)pyrf_pmu__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_pmu__doc,
.tp_methods = pyrf_pmu__methods,
.tp_str = pyrf_pmu__name,
.tp_repr = pyrf_pmu__repr,
};
static int pyrf_pmu__setup_types(void)
{
pyrf_pmu__type.tp_new = PyType_GenericNew;
return PyType_Ready(&pyrf_pmu__type);
}
/** A python iterator for pmus that has no equivalent in the C code. */
struct pyrf_pmu_iterator {
PyObject_HEAD
struct perf_pmu *pmu;
};
static void pyrf_pmu_iterator__dealloc(struct pyrf_pmu_iterator *self)
{
Py_TYPE(self)->tp_free((PyObject *) self);
}
static PyObject *pyrf_pmu_iterator__new(PyTypeObject *type, PyObject *args __maybe_unused,
PyObject *kwds __maybe_unused)
{
struct pyrf_pmu_iterator *itr = (void *)type->tp_alloc(type, 0);
if (itr != NULL)
itr->pmu = perf_pmus__scan(/*pmu=*/NULL);
return (PyObject *) itr;
}
static PyObject *pyrf_pmu_iterator__iter(PyObject *self)
{
Py_INCREF(self);
return self;
}
static PyObject *pyrf_pmu_iterator__iternext(PyObject *self)
{
struct pyrf_pmu_iterator *itr = (void *)self;
struct pyrf_pmu *ppmu;
if (itr->pmu == NULL) {
PyErr_SetNone(PyExc_StopIteration);
return NULL;
}
// Create object to return.
ppmu = PyObject_New(struct pyrf_pmu, &pyrf_pmu__type);
if (ppmu) {
ppmu->pmu = itr->pmu;
// Advance iterator.
itr->pmu = perf_pmus__scan(itr->pmu);
}
return (PyObject *)ppmu;
}
/** The python type for the PMU iterator. */
static PyTypeObject pyrf_pmu_iterator__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pmus.iterator",
.tp_doc = "Iterator for the pmus string sequence.",
.tp_basicsize = sizeof(struct pyrf_pmu_iterator),
.tp_itemsize = 0,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_new = pyrf_pmu_iterator__new,
.tp_dealloc = (destructor) pyrf_pmu_iterator__dealloc,
.tp_iter = pyrf_pmu_iterator__iter,
.tp_iternext = pyrf_pmu_iterator__iternext,
};
static int pyrf_pmu_iterator__setup_types(void)
{
return PyType_Ready(&pyrf_pmu_iterator__type);
}
static PyObject *pyrf__pmus(PyObject *self, PyObject *args)
{
// Calling the class creates an instance of the iterator.
return PyObject_CallObject((PyObject *) &pyrf_pmu_iterator__type, /*args=*/NULL);
}
struct pyrf_counts_values {
PyObject_HEAD
struct perf_counts_values values;
};
static const char pyrf_counts_values__doc[] = PyDoc_STR("perf counts values object.");
static void pyrf_counts_values__delete(struct pyrf_counts_values *pcounts_values)
{
Py_TYPE(pcounts_values)->tp_free((PyObject *)pcounts_values);
}
#define counts_values_member_def(member, ptype, help) \
{ #member, ptype, \
offsetof(struct pyrf_counts_values, values.member), \
0, help }
static PyMemberDef pyrf_counts_values_members[] = {
counts_values_member_def(val, T_ULONG, "Value of event"),
counts_values_member_def(ena, T_ULONG, "Time for which enabled"),
counts_values_member_def(run, T_ULONG, "Time for which running"),
counts_values_member_def(id, T_ULONG, "Unique ID for an event"),
counts_values_member_def(lost, T_ULONG, "Num of lost samples"),
{ .name = NULL, },
};
static PyObject *pyrf_counts_values_get_values(struct pyrf_counts_values *self, void *closure)
{
PyObject *vals = PyList_New(5);
if (!vals)
return NULL;
for (int i = 0; i < 5; i++)
PyList_SetItem(vals, i, PyLong_FromLong(self->values.values[i]));
return vals;
}
static int pyrf_counts_values_set_values(struct pyrf_counts_values *self, PyObject *list,
void *closure)
{
Py_ssize_t size;
PyObject *item = NULL;
if (!PyList_Check(list)) {
PyErr_SetString(PyExc_TypeError, "Value assigned must be a list");
return -1;
}
size = PyList_Size(list);
for (Py_ssize_t i = 0; i < size; i++) {
item = PyList_GetItem(list, i);
if (!PyLong_Check(item)) {
PyErr_SetString(PyExc_TypeError, "List members should be numbers");
return -1;
}
self->values.values[i] = PyLong_AsLong(item);
}
return 0;
}
static PyGetSetDef pyrf_counts_values_getset[] = {
{"values", (getter)pyrf_counts_values_get_values, (setter)pyrf_counts_values_set_values,
"Name field", NULL},
{ .name = NULL, },
};
static PyTypeObject pyrf_counts_values__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.counts_values",
.tp_basicsize = sizeof(struct pyrf_counts_values),
.tp_dealloc = (destructor)pyrf_counts_values__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_counts_values__doc,
.tp_members = pyrf_counts_values_members,
.tp_getset = pyrf_counts_values_getset,
};
static int pyrf_counts_values__setup_types(void)
{
pyrf_counts_values__type.tp_new = PyType_GenericNew;
return PyType_Ready(&pyrf_counts_values__type);
}
struct pyrf_evsel {
PyObject_HEAD
struct evsel *evsel;
};
static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
PyObject *args, PyObject *kwargs)
{
struct perf_event_attr attr = {
.type = PERF_TYPE_HARDWARE,
.config = PERF_COUNT_HW_CPU_CYCLES,
.sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
};
static char *kwlist[] = {
"type",
"config",
"sample_freq",
"sample_period",
"sample_type",
"read_format",
"disabled",
"inherit",
"pinned",
"exclusive",
"exclude_user",
"exclude_kernel",
"exclude_hv",
"exclude_idle",
"mmap",
"context_switch",
"comm",
"freq",
"inherit_stat",
"enable_on_exec",
"task",
"watermark",
"precise_ip",
"mmap_data",
"sample_id_all",
"wakeup_events",
"bp_type",
"bp_addr",
"bp_len",
"idx",
NULL
};
u64 sample_period = 0;
u32 disabled = 0,
inherit = 0,
pinned = 0,
exclusive = 0,
exclude_user = 0,
exclude_kernel = 0,
exclude_hv = 0,
exclude_idle = 0,
mmap = 0,
context_switch = 0,
comm = 0,
freq = 1,
inherit_stat = 0,
enable_on_exec = 0,
task = 0,
watermark = 0,
precise_ip = 0,
mmap_data = 0,
sample_id_all = 1,
idx = 0;
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"|iKiKKiiiiiiiiiiiiiiiiiiiiiiKKi", kwlist,
&attr.type, &attr.config, &attr.sample_freq,
&sample_period, &attr.sample_type,
&attr.read_format, &disabled, &inherit,
&pinned, &exclusive, &exclude_user,
&exclude_kernel, &exclude_hv, &exclude_idle,
&mmap, &context_switch, &comm, &freq, &inherit_stat,
&enable_on_exec, &task, &watermark,
&precise_ip, &mmap_data, &sample_id_all,
&attr.wakeup_events, &attr.bp_type,
&attr.bp_addr, &attr.bp_len, &idx))
return -1;
/* union... */
if (sample_period != 0) {
if (attr.sample_freq != 0)
return -1; /* FIXME: throw right exception */
attr.sample_period = sample_period;
}
/* Bitfields */
attr.disabled = disabled;
attr.inherit = inherit;
attr.pinned = pinned;
attr.exclusive = exclusive;
attr.exclude_user = exclude_user;
attr.exclude_kernel = exclude_kernel;
attr.exclude_hv = exclude_hv;
attr.exclude_idle = exclude_idle;
attr.mmap = mmap;
attr.context_switch = context_switch;
attr.comm = comm;
attr.freq = freq;
attr.inherit_stat = inherit_stat;
attr.enable_on_exec = enable_on_exec;
attr.task = task;
attr.watermark = watermark;
attr.precise_ip = precise_ip;
attr.mmap_data = mmap_data;
attr.sample_id_all = sample_id_all;
attr.size = sizeof(attr);
evsel__put(pevsel->evsel);
pevsel->evsel = evsel__new(&attr);
if (!pevsel->evsel) {
PyErr_NoMemory();
return -1;
}
return 0;
}
static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
{
evsel__put(pevsel->evsel);
Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
}
static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
PyObject *args, PyObject *kwargs)
{
struct evsel *evsel = pevsel->evsel;
struct perf_cpu_map *cpus = NULL;
struct perf_thread_map *threads = NULL;
PyObject *pcpus = NULL, *pthreads = NULL;
int group = 0, inherit = 0;
static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
CHECK_INITIALIZED(evsel, "evsel");
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
&pcpus, &pthreads, &group, &inherit))
return NULL;
if (pthreads != NULL && pthreads != Py_None)
threads = ((struct pyrf_thread_map *)pthreads)->threads;
if (pcpus != NULL && pcpus != Py_None)
cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
evsel->core.attr.inherit = inherit;
/*
* This will group just the fds for this single evsel, to group
* multiple events, use evlist.open().
*/
if (evsel__open(evsel, cpus, threads) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *pyrf_evsel__cpus(struct pyrf_evsel *pevsel)
{
struct pyrf_cpu_map *pcpu_map;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
pcpu_map = PyObject_New(struct pyrf_cpu_map, &pyrf_cpu_map__type);
if (pcpu_map)
pcpu_map->cpus = perf_cpu_map__get(pevsel->evsel->core.cpus);
return (PyObject *)pcpu_map;
}
static PyObject *pyrf_evsel__threads(struct pyrf_evsel *pevsel)
{
struct pyrf_thread_map *pthread_map;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
pthread_map = PyObject_New(struct pyrf_thread_map, &pyrf_thread_map__type);
if (pthread_map)
pthread_map->threads = perf_thread_map__get(pevsel->evsel->core.threads);
return (PyObject *)pthread_map;
}
/*
* Ensure evsel's counts and prev_raw_counts are allocated, the latter
* used by tool PMUs to compute the cumulative count as expected by
* stat's process_counter_values.
*/
static int evsel__ensure_counts(struct evsel *evsel)
{
int nthreads, ncpus;
if (evsel->counts != NULL)
return 0;
nthreads = perf_thread_map__nr(evsel->core.threads);
ncpus = perf_cpu_map__nr(evsel->core.cpus);
evsel->counts = perf_counts__new(ncpus, nthreads);
if (evsel->counts == NULL)
return -ENOMEM;
evsel->prev_raw_counts = perf_counts__new(ncpus, nthreads);
if (evsel->prev_raw_counts == NULL)
return -ENOMEM;
return 0;
}
static PyObject *pyrf_evsel__read(struct pyrf_evsel *pevsel,
PyObject *args, PyObject *kwargs)
{
struct evsel *evsel = pevsel->evsel;
int cpu = 0, cpu_idx, thread = 0, thread_idx;
struct perf_counts_values *old_count, *new_count;
struct pyrf_counts_values *count_values;
CHECK_INITIALIZED(evsel, "evsel");
count_values = PyObject_New(struct pyrf_counts_values,
&pyrf_counts_values__type);
if (!count_values)
return NULL;
if (!PyArg_ParseTuple(args, "ii", &cpu, &thread))
return NULL;
cpu_idx = perf_cpu_map__idx(evsel->core.cpus, (struct perf_cpu){.cpu = cpu});
if (cpu_idx < 0) {
PyErr_Format(PyExc_TypeError, "CPU %d is not part of evsel's CPUs", cpu);
return NULL;
}
thread_idx = perf_thread_map__idx(evsel->core.threads, thread);
if (thread_idx < 0) {
PyErr_Format(PyExc_TypeError, "Thread %d is not part of evsel's threads",
thread);
return NULL;
}
if (evsel__ensure_counts(evsel))
return PyErr_NoMemory();
/* Set up pointers to the old and newly read counter values. */
old_count = perf_counts(evsel->prev_raw_counts, cpu_idx, thread_idx);
new_count = perf_counts(evsel->counts, cpu_idx, thread_idx);
/* Update the value in evsel->counts. */
evsel__read_counter(evsel, cpu_idx, thread_idx);
/* Copy the value and turn it into the delta from old_count. */
count_values->values = *new_count;
count_values->values.val -= old_count->val;
count_values->values.ena -= old_count->ena;
count_values->values.run -= old_count->run;
/* Save the new count over the old_count for the next read. */
*old_count = *new_count;
return (PyObject *)count_values;
}
static PyObject *pyrf_evsel__str(PyObject *self)
{
struct pyrf_evsel *pevsel = (void *)self;
struct evsel *evsel = pevsel->evsel;
if (!evsel)
return PyUnicode_FromString("evsel(uninitialized)");
return PyUnicode_FromFormat("evsel(%s)", evsel__name(evsel));
}
static PyMethodDef pyrf_evsel__methods[] = {
{
.ml_name = "open",
.ml_meth = (PyCFunction)pyrf_evsel__open,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("open the event selector file descriptor table.")
},
{
.ml_name = "cpus",
.ml_meth = (PyCFunction)pyrf_evsel__cpus,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("CPUs the event is to be used with.")
},
{
.ml_name = "threads",
.ml_meth = (PyCFunction)pyrf_evsel__threads,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("threads the event is to be used with.")
},
{
.ml_name = "read",
.ml_meth = (PyCFunction)pyrf_evsel__read,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("read counters")
},
{ .ml_name = NULL, }
};
static PyObject *pyrf_evsel__get_tracking(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
if (pevsel->evsel->tracking)
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
static int pyrf_evsel__set_tracking(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
int is_true;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
is_true = PyObject_IsTrue(val);
if (is_true < 0)
return -1;
pevsel->evsel->tracking = is_true;
return 0;
}
static int pyrf_evsel__set_attr_config(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
pevsel->evsel->core.attr.config = PyLong_AsUnsignedLongLong(val);
return PyErr_Occurred() ? -1 : 0;
}
static PyObject *pyrf_evsel__get_attr_config(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLongLong(pevsel->evsel->core.attr.config);
}
static int pyrf_evsel__set_attr_read_format(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
pevsel->evsel->core.attr.read_format = PyLong_AsUnsignedLongLong(val);
return PyErr_Occurred() ? -1 : 0;
}
static PyObject *pyrf_evsel__get_attr_read_format(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLongLong(pevsel->evsel->core.attr.read_format);
}
static int pyrf_evsel__set_attr_sample_period(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
pevsel->evsel->core.attr.sample_period = PyLong_AsUnsignedLongLong(val);
return PyErr_Occurred() ? -1 : 0;
}
static PyObject *pyrf_evsel__get_attr_sample_period(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLongLong(pevsel->evsel->core.attr.sample_period);
}
static int pyrf_evsel__set_attr_sample_type(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
pevsel->evsel->core.attr.sample_type = PyLong_AsUnsignedLongLong(val);
return PyErr_Occurred() ? -1 : 0;
}
static PyObject *pyrf_evsel__get_attr_sample_type(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLongLong(pevsel->evsel->core.attr.sample_type);
}
static PyObject *pyrf_evsel__get_attr_size(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLong(pevsel->evsel->core.attr.size);
}
static int pyrf_evsel__set_attr_type(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
pevsel->evsel->core.attr.type = PyLong_AsUnsignedLong(val);
return PyErr_Occurred() ? -1 : 0;
}
static PyObject *pyrf_evsel__get_attr_type(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLong(pevsel->evsel->core.attr.type);
}
static int pyrf_evsel__set_attr_wakeup_events(PyObject *self, PyObject *val, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED_INT(pevsel->evsel, "evsel");
pevsel->evsel->core.attr.wakeup_events = PyLong_AsUnsignedLong(val);
return PyErr_Occurred() ? -1 : 0;
}
static PyObject *pyrf_evsel__get_attr_wakeup_events(PyObject *self, void *closure __maybe_unused)
{
struct pyrf_evsel *pevsel = (void *)self;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
return PyLong_FromUnsignedLong(pevsel->evsel->core.attr.wakeup_events);
}
static PyObject *pyrf_evsel__get_ids(struct pyrf_evsel *pevsel, void *closure __maybe_unused)
{
struct evsel *evsel;
PyObject *list;
CHECK_INITIALIZED(pevsel->evsel, "evsel");
evsel = pevsel->evsel;
list = PyList_New(0);
if (!list)
return NULL;
for (u32 i = 0; i < evsel->core.ids; i++) {
PyObject *id = PyLong_FromUnsignedLongLong(evsel->core.id[i]);
int ret;
if (!id) {
Py_DECREF(list);
return NULL;
}
ret = PyList_Append(list, id);
Py_DECREF(id);
if (ret < 0) {
Py_DECREF(list);
return NULL;
}
}
return list;
}
static PyGetSetDef pyrf_evsel__getset[] = {
{
.name = "ids",
.get = (getter)pyrf_evsel__get_ids,
.set = NULL,
.doc = "event IDs.",
},
{
.name = "tracking",
.get = pyrf_evsel__get_tracking,
.set = pyrf_evsel__set_tracking,
.doc = "tracking event.",
},
{
.name = "config",
.get = pyrf_evsel__get_attr_config,
.set = pyrf_evsel__set_attr_config,
.doc = "attribute config.",
},
{
.name = "read_format",
.get = pyrf_evsel__get_attr_read_format,
.set = pyrf_evsel__set_attr_read_format,
.doc = "attribute read_format.",
},
{
.name = "sample_period",
.get = pyrf_evsel__get_attr_sample_period,
.set = pyrf_evsel__set_attr_sample_period,
.doc = "attribute sample_period.",
},
{
.name = "sample_type",
.get = pyrf_evsel__get_attr_sample_type,
.set = pyrf_evsel__set_attr_sample_type,
.doc = "attribute sample_type.",
},
{
.name = "size",
.get = pyrf_evsel__get_attr_size,
.doc = "attribute size.",
},
{
.name = "type",
.get = pyrf_evsel__get_attr_type,
.set = pyrf_evsel__set_attr_type,
.doc = "attribute type.",
},
{
.name = "wakeup_events",
.get = pyrf_evsel__get_attr_wakeup_events,
.set = pyrf_evsel__set_attr_wakeup_events,
.doc = "attribute wakeup_events.",
},
{ .name = NULL},
};
static const char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
static PyObject *pyrf_evsel__getattro(struct pyrf_evsel *pevsel, PyObject *attr_name)
{
if (!pevsel->evsel) {
PyErr_SetString(PyExc_ValueError, "evsel not initialized");
return NULL;
}
return PyObject_GenericGetAttr((PyObject *) pevsel, attr_name);
}
static int pyrf_evsel__setattro(struct pyrf_evsel *pevsel, PyObject *attr_name, PyObject *value)
{
if (!pevsel->evsel) {
PyErr_SetString(PyExc_ValueError, "evsel not initialized");
return -1;
}
return PyObject_GenericSetAttr((PyObject *) pevsel, attr_name, value);
}
static PyTypeObject pyrf_evsel__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.evsel",
.tp_basicsize = sizeof(struct pyrf_evsel),
.tp_dealloc = (destructor)pyrf_evsel__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_evsel__doc,
.tp_getset = pyrf_evsel__getset,
.tp_methods = pyrf_evsel__methods,
.tp_init = (initproc)pyrf_evsel__init,
.tp_str = pyrf_evsel__str,
.tp_repr = pyrf_evsel__str,
.tp_getattro = (getattrofunc) pyrf_evsel__getattro,
.tp_setattro = (setattrofunc) pyrf_evsel__setattro,
};
static PyObject *pyrf_evsel__new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
struct pyrf_evsel *pevsel;
pevsel = (struct pyrf_evsel *)PyType_GenericNew(type, args, kwargs);
if (pevsel)
pevsel->evsel = NULL;
return (PyObject *)pevsel;
}
static int pyrf_evsel__setup_types(void)
{
pyrf_evsel__type.tp_new = pyrf_evsel__new;
return PyType_Ready(&pyrf_evsel__type);
}
struct pyrf_evlist {
PyObject_HEAD
struct evlist *evlist;
};
static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs __maybe_unused)
{
PyObject *pcpus = NULL, *pthreads = NULL;
struct perf_cpu_map *cpus;
struct perf_thread_map *threads;
if (!PyArg_ParseTuple(args, "O!O!",
&pyrf_cpu_map__type, &pcpus,
&pyrf_thread_map__type, &pthreads))
return -1;
evlist__put(pevlist->evlist);
pevlist->evlist = evlist__new();
if (!pevlist->evlist) {
PyErr_NoMemory();
return -1;
}
threads = ((struct pyrf_thread_map *)pthreads)->threads;
cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
perf_evlist__set_maps(evlist__core(pevlist->evlist), cpus, threads);
return 0;
}
static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
{
evlist__put(pevlist->evlist);
Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
}
static PyObject *pyrf_evlist__all_cpus(struct pyrf_evlist *pevlist)
{
struct pyrf_cpu_map *pcpu_map;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
pcpu_map = PyObject_New(struct pyrf_cpu_map, &pyrf_cpu_map__type);
if (pcpu_map)
pcpu_map->cpus = perf_cpu_map__get(evlist__core(pevlist->evlist)->all_cpus);
return (PyObject *)pcpu_map;
}
static PyObject *pyrf_evlist__metrics(struct pyrf_evlist *pevlist)
{
PyObject *list;
struct rb_node *node;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
list = PyList_New(/*len=*/0);
if (!list)
return NULL;
for (node = rb_first_cached(&evlist__metric_events(pevlist->evlist)->entries); node;
node = rb_next(node)) {
struct metric_event *me = container_of(node, struct metric_event, nd);
struct list_head *pos;
list_for_each(pos, &me->head) {
struct metric_expr *expr = container_of(pos, struct metric_expr, nd);
PyObject *str = PyUnicode_FromString(expr->metric_name);
if (!str || PyList_Append(list, str) != 0) {
Py_DECREF(list);
return NULL;
}
Py_DECREF(str);
}
}
return list;
}
static int prepare_metric(const struct metric_expr *mexp,
const struct evsel *evsel,
struct expr_parse_ctx *pctx,
int cpu_idx, int thread_idx)
{
struct evsel * const *metric_events = mexp->metric_events;
struct metric_ref *metric_refs = mexp->metric_refs;
for (int i = 0; metric_events[i]; i++) {
struct evsel *cur = metric_events[i];
double val, ena, run;
int ret, source_count = 0;
struct perf_counts_values *old_count, *new_count;
char *n = strdup(evsel__metric_id(cur));
if (!n)
return -ENOMEM;
/*
* If there are multiple uncore PMUs and we're not reading the
* leader's stats, determine the stats for the appropriate
* uncore PMU.
*/
if (evsel && evsel->metric_leader &&
evsel->pmu != evsel->metric_leader->pmu &&
cur->pmu == evsel->metric_leader->pmu) {
struct evsel *pos;
evlist__for_each_entry(evsel->evlist, pos) {
if (pos->pmu != evsel->pmu)
continue;
if (pos->metric_leader != cur)
continue;
cur = pos;
source_count = 1;
break;
}
}
if (source_count == 0)
source_count = evsel__source_count(cur);
ret = evsel__ensure_counts(cur);
if (ret)
return ret;
/* Set up pointers to the old and newly read counter values. */
old_count = perf_counts(cur->prev_raw_counts, cpu_idx, thread_idx);
new_count = perf_counts(cur->counts, cpu_idx, thread_idx);
/* Update the value in cur->counts. */
evsel__read_counter(cur, cpu_idx, thread_idx);
val = new_count->val - old_count->val;
ena = new_count->ena - old_count->ena;
run = new_count->run - old_count->run;
if (ena != run && run != 0)
val = val * ena / run;
ret = expr__add_id_val_source_count(pctx, n, val, source_count);
if (ret)
return ret;
}
for (int i = 0; metric_refs && metric_refs[i].metric_name; i++) {
int ret = expr__add_ref(pctx, &metric_refs[i]);
if (ret)
return ret;
}
return 0;
}
static PyObject *pyrf_evlist__compute_metric(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
int ret, cpu = 0, cpu_idx = 0, thread = 0, thread_idx = 0;
const char *metric;
struct rb_node *node;
struct metric_expr *mexp = NULL;
struct expr_parse_ctx *pctx;
double result = 0;
struct evsel *metric_evsel = NULL;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
if (!PyArg_ParseTuple(args, "sii", &metric, &cpu, &thread))
return NULL;
for (node = rb_first_cached(&evlist__metric_events(pevlist->evlist)->entries);
mexp == NULL && node;
node = rb_next(node)) {
struct metric_event *me = container_of(node, struct metric_event, nd);
struct list_head *pos;
list_for_each(pos, &me->head) {
struct metric_expr *e = container_of(pos, struct metric_expr, nd);
struct evsel *pos2;
if (strcmp(e->metric_name, metric))
continue;
if (e->metric_events[0] == NULL)
continue;
evlist__for_each_entry(pevlist->evlist, pos2) {
if (pos2->metric_leader != e->metric_events[0])
continue;
cpu_idx = perf_cpu_map__idx(pos2->core.cpus,
(struct perf_cpu){.cpu = cpu});
if (cpu_idx < 0)
continue;
thread_idx = perf_thread_map__idx(pos2->core.threads, thread);
if (thread_idx < 0)
continue;
metric_evsel = pos2;
mexp = e;
goto done;
}
}
}
done:
if (!mexp) {
PyErr_Format(PyExc_TypeError, "Unknown metric '%s' for CPU '%d' and thread '%d'",
metric, cpu, thread);
return NULL;
}
pctx = expr__ctx_new();
if (!pctx)
return PyErr_NoMemory();
ret = prepare_metric(mexp, metric_evsel, pctx, cpu_idx, thread_idx);
if (ret) {
expr__ctx_free(pctx);
errno = -ret;
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
if (expr__parse(&result, pctx, mexp->metric_expr))
result = 0.0;
expr__ctx_free(pctx);
return PyFloat_FromDouble(result);
}
static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
struct evlist *evlist;
static char *kwlist[] = { "pages", "overwrite", NULL };
int pages = 128, overwrite = false;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
&pages, &overwrite))
return NULL;
if (evlist__do_mmap(evlist, pages) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
struct evlist *evlist;
static char *kwlist[] = { "timeout", NULL };
int timeout = -1, n;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
return NULL;
n = evlist__poll(evlist, timeout);
if (n < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
return Py_BuildValue("i", n);
}
static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
PyObject *args __maybe_unused,
PyObject *kwargs __maybe_unused)
{
struct evlist *evlist;
PyObject *list;
int i;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
list = PyList_New(0);
for (i = 0; i < evlist__core(evlist)->pollfd.nr; ++i) {
PyObject *file;
file = PyFile_FromFd(evlist__core(evlist)->pollfd.entries[i].fd, "perf", "r", -1,
NULL, NULL, NULL, 0);
if (file == NULL)
goto free_list;
if (PyList_Append(list, file) != 0) {
Py_DECREF(file);
goto free_list;
}
Py_DECREF(file);
}
return list;
free_list:
return PyErr_NoMemory();
}
static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
PyObject *args,
PyObject *kwargs __maybe_unused)
{
struct evlist *evlist;
PyObject *pevsel;
struct evsel *evsel;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
if (!PyArg_ParseTuple(args, "O!", &pyrf_evsel__type, &pevsel))
return NULL;
CHECK_INITIALIZED(((struct pyrf_evsel *)pevsel)->evsel, "evsel");
evsel = ((struct pyrf_evsel *)pevsel)->evsel;
CHECK_INITIALIZED(evsel, "evsel");
evsel->core.idx = evlist__nr_entries(evlist);
evlist__add(evlist, evsel__get(evsel));
return Py_BuildValue("i", evlist__nr_entries(evlist));
}
static struct mmap *get_md(struct evlist *evlist, int cpu)
{
int i;
for (i = 0; i < evlist__core(evlist)->nr_mmaps; i++) {
struct mmap *md = &evlist__mmap(evlist)[i];
if (md->core.cpu.cpu == cpu)
return md;
}
return NULL;
}
static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
struct evlist *evlist;
union perf_event *event;
struct evsel *evsel;
int sample_id_all = 1, cpu;
static char *kwlist[] = { "cpu", "sample_id_all", NULL };
struct mmap *md;
PyObject *pyevent;
int err;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
&cpu, &sample_id_all))
return NULL;
md = get_md(evlist, cpu);
if (!md)
return PyErr_Format(PyExc_TypeError, "Unknown CPU '%d'", cpu);
err = perf_mmap__read_init(&md->core);
if (err < 0) {
if (err == -EAGAIN)
Py_RETURN_NONE;
return PyErr_Format(PyExc_OSError,
"perf: error mmap read init, err=%d", err);
}
event = perf_mmap__read_event(&md->core);
if (event == NULL)
Py_RETURN_NONE;
evsel = evlist__event2evsel(evlist, event);
if (!evsel) {
/* Unknown evsel. */
perf_mmap__consume(&md->core);
Py_RETURN_NONE;
}
pyevent = pyrf_event__new(event, evsel, evlist__session(evlist), /*machine=*/NULL);
perf_mmap__consume(&md->core);
if (pyevent == NULL)
return PyErr_Occurred() ? NULL : PyErr_NoMemory();
return pyevent;
}
static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
struct evlist *evlist;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
if (evlist__open(evlist) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *pyrf_evlist__close(struct pyrf_evlist *pevlist)
{
struct evlist *evlist;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
evlist__close(evlist);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *pyrf_evlist__config(struct pyrf_evlist *pevlist)
{
struct record_opts opts = {
.sample_time = true,
.mmap_pages = UINT_MAX,
.user_freq = UINT_MAX,
.user_interval = ULLONG_MAX,
.freq = 4000,
.target = {
.uses_mmap = true,
.default_per_cpu = true,
},
.nr_threads_synthesize = 1,
.ctl_fd = -1,
.ctl_fd_ack = -1,
.no_buffering = true,
.no_inherit = true,
};
struct evlist *evlist;
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist = pevlist->evlist;
evlist__config(evlist, &opts, &callchain_param);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *pyrf_evlist__disable(struct pyrf_evlist *pevlist)
{
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist__disable(pevlist->evlist);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *pyrf_evlist__enable(struct pyrf_evlist *pevlist)
{
CHECK_INITIALIZED(pevlist->evlist, "evlist");
evlist__enable(pevlist->evlist);
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef pyrf_evlist__methods[] = {
{
.ml_name = "all_cpus",
.ml_meth = (PyCFunction)pyrf_evlist__all_cpus,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("CPU map union of all evsel CPU maps.")
},
{
.ml_name = "metrics",
.ml_meth = (PyCFunction)pyrf_evlist__metrics,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("List of metric names within the evlist.")
},
{
.ml_name = "compute_metric",
.ml_meth = (PyCFunction)pyrf_evlist__compute_metric,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("compute metric for given name, cpu and thread")
},
{
.ml_name = "mmap",
.ml_meth = (PyCFunction)pyrf_evlist__mmap,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("mmap the file descriptor table.")
},
{
.ml_name = "open",
.ml_meth = (PyCFunction)pyrf_evlist__open,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("open the file descriptors.")
},
{
.ml_name = "close",
.ml_meth = (PyCFunction)pyrf_evlist__close,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("close the file descriptors.")
},
{
.ml_name = "poll",
.ml_meth = (PyCFunction)pyrf_evlist__poll,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("poll the file descriptor table.")
},
{
.ml_name = "get_pollfd",
.ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("get the poll file descriptor table.")
},
{
.ml_name = "add",
.ml_meth = (PyCFunction)pyrf_evlist__add,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("adds an event selector to the list.")
},
{
.ml_name = "read_on_cpu",
.ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("reads an event.")
},
{
.ml_name = "config",
.ml_meth = (PyCFunction)pyrf_evlist__config,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Apply default record options to the evlist.")
},
{
.ml_name = "disable",
.ml_meth = (PyCFunction)pyrf_evlist__disable,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Disable the evsels in the evlist.")
},
{
.ml_name = "enable",
.ml_meth = (PyCFunction)pyrf_evlist__enable,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Enable the evsels in the evlist.")
},
{ .ml_name = NULL, }
};
static Py_ssize_t pyrf_evlist__length(PyObject *obj)
{
struct pyrf_evlist *pevlist = (void *)obj;
if (!pevlist->evlist)
return 0;
return evlist__nr_entries(pevlist->evlist);
}
static PyObject *pyrf_evsel__from_evsel(struct evsel *evsel)
{
struct pyrf_evsel *pevsel = PyObject_New(struct pyrf_evsel, &pyrf_evsel__type);
if (!pevsel)
return NULL;
pevsel->evsel = evsel__get(evsel);
return (PyObject *)pevsel;
}
static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
{
struct pyrf_evlist *pevlist = (void *)obj;
struct evsel *pos;
if (!pevlist->evlist || i >= evlist__nr_entries(pevlist->evlist)) {
PyErr_SetString(PyExc_IndexError, "Index out of range");
return NULL;
}
evlist__for_each_entry(pevlist->evlist, pos) {
if (i-- == 0)
break;
}
return pyrf_evsel__from_evsel(pos);
}
static PyObject *pyrf_evlist__str(PyObject *self)
{
struct pyrf_evlist *pevlist = (void *)self;
struct evsel *pos;
struct strbuf sb = STRBUF_INIT;
bool first = true;
PyObject *result;
if (!pevlist->evlist)
return PyUnicode_FromString("evlist(uninitialized)");
strbuf_addstr(&sb, "evlist([");
evlist__for_each_entry(pevlist->evlist, pos) {
if (!first)
strbuf_addch(&sb, ',');
strbuf_addstr(&sb, evsel__name(pos));
first = false;
}
strbuf_addstr(&sb, "])");
result = PyUnicode_FromString(sb.buf);
strbuf_release(&sb);
return result;
}
static PySequenceMethods pyrf_evlist__sequence_methods = {
.sq_length = pyrf_evlist__length,
.sq_item = pyrf_evlist__item,
};
static const char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
static PyObject *pyrf_evlist__getattro(struct pyrf_evlist *pevlist, PyObject *attr_name)
{
if (!pevlist->evlist) {
PyErr_SetString(PyExc_ValueError, "evlist not initialized");
return NULL;
}
return PyObject_GenericGetAttr((PyObject *) pevlist, attr_name);
}
static int pyrf_evlist__setattro(struct pyrf_evlist *pevlist, PyObject *attr_name, PyObject *value)
{
if (!pevlist->evlist) {
PyErr_SetString(PyExc_ValueError, "evlist not initialized");
return -1;
}
return PyObject_GenericSetAttr((PyObject *) pevlist, attr_name, value);
}
static PyTypeObject pyrf_evlist__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.evlist",
.tp_basicsize = sizeof(struct pyrf_evlist),
.tp_dealloc = (destructor)pyrf_evlist__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_as_sequence = &pyrf_evlist__sequence_methods,
.tp_doc = pyrf_evlist__doc,
.tp_methods = pyrf_evlist__methods,
.tp_init = (initproc)pyrf_evlist__init,
.tp_repr = pyrf_evlist__str,
.tp_str = pyrf_evlist__str,
.tp_getattro = (getattrofunc) pyrf_evlist__getattro,
.tp_setattro = (setattrofunc) pyrf_evlist__setattro,
};
static PyObject *pyrf_evlist__new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
struct pyrf_evlist *pevlist;
pevlist = (struct pyrf_evlist *)PyType_GenericNew(type, args, kwargs);
if (pevlist)
pevlist->evlist = NULL;
return (PyObject *)pevlist;
}
static int pyrf_evlist__setup_types(void)
{
pyrf_evlist__type.tp_new = pyrf_evlist__new;
return PyType_Ready(&pyrf_evlist__type);
}
#define PERF_CONST(name) { #name, PERF_##name }
struct perf_constant {
const char *name;
int value;
};
static const struct perf_constant perf__constants[] = {
PERF_CONST(TYPE_HARDWARE),
PERF_CONST(TYPE_SOFTWARE),
PERF_CONST(TYPE_TRACEPOINT),
PERF_CONST(TYPE_HW_CACHE),
PERF_CONST(TYPE_RAW),
PERF_CONST(TYPE_BREAKPOINT),
PERF_CONST(COUNT_HW_CPU_CYCLES),
PERF_CONST(COUNT_HW_REF_CPU_CYCLES),
PERF_CONST(COUNT_HW_INSTRUCTIONS),
PERF_CONST(COUNT_HW_CACHE_REFERENCES),
PERF_CONST(COUNT_HW_CACHE_MISSES),
PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
PERF_CONST(COUNT_HW_BRANCH_MISSES),
PERF_CONST(COUNT_HW_BUS_CYCLES),
PERF_CONST(COUNT_HW_CACHE_L1D),
PERF_CONST(COUNT_HW_CACHE_L1I),
PERF_CONST(COUNT_HW_CACHE_LL),
PERF_CONST(COUNT_HW_CACHE_DTLB),
PERF_CONST(COUNT_HW_CACHE_ITLB),
PERF_CONST(COUNT_HW_CACHE_BPU),
PERF_CONST(COUNT_HW_CACHE_OP_READ),
PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
PERF_CONST(COUNT_SW_CPU_CLOCK),
PERF_CONST(COUNT_SW_TASK_CLOCK),
PERF_CONST(COUNT_SW_PAGE_FAULTS),
PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
PERF_CONST(COUNT_SW_EMULATION_FAULTS),
PERF_CONST(COUNT_SW_DUMMY),
PERF_CONST(SAMPLE_IP),
PERF_CONST(SAMPLE_TID),
PERF_CONST(SAMPLE_TIME),
PERF_CONST(SAMPLE_ADDR),
PERF_CONST(SAMPLE_READ),
PERF_CONST(SAMPLE_CALLCHAIN),
PERF_CONST(SAMPLE_ID),
PERF_CONST(SAMPLE_CPU),
PERF_CONST(SAMPLE_PERIOD),
PERF_CONST(SAMPLE_STREAM_ID),
PERF_CONST(SAMPLE_RAW),
PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
PERF_CONST(FORMAT_ID),
PERF_CONST(FORMAT_GROUP),
PERF_CONST(RECORD_MMAP),
PERF_CONST(RECORD_LOST),
PERF_CONST(RECORD_COMM),
PERF_CONST(RECORD_EXIT),
PERF_CONST(RECORD_THROTTLE),
PERF_CONST(RECORD_UNTHROTTLE),
PERF_CONST(RECORD_FORK),
PERF_CONST(RECORD_READ),
PERF_CONST(RECORD_SAMPLE),
PERF_CONST(RECORD_MMAP2),
PERF_CONST(RECORD_AUX),
PERF_CONST(RECORD_ITRACE_START),
PERF_CONST(RECORD_LOST_SAMPLES),
PERF_CONST(RECORD_SWITCH),
PERF_CONST(RECORD_SWITCH_CPU_WIDE),
PERF_CONST(RECORD_STAT),
PERF_CONST(RECORD_STAT_ROUND),
PERF_CONST(RECORD_MISC_SWITCH_OUT),
{ .name = NULL, },
};
static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = { "sys", "name", NULL };
char *sys = NULL;
char *name = NULL;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
&sys, &name))
return NULL;
return PyLong_FromLong(tp_pmu__id(sys, name));
}
static PyObject *pyrf_evlist__from_evlist(struct evlist *evlist)
{
struct pyrf_evlist *pevlist = PyObject_New(struct pyrf_evlist, &pyrf_evlist__type);
if (!pevlist)
return NULL;
pevlist->evlist = evlist__get(evlist);
return (PyObject *)pevlist;
}
static PyObject *pyrf__parse_events(PyObject *self, PyObject *args)
{
const char *input;
struct evlist *evlist = evlist__new();
struct parse_events_error err;
PyObject *result;
PyObject *pcpus = NULL, *pthreads = NULL;
struct perf_cpu_map *cpus;
struct perf_thread_map *threads;
if (!evlist)
return PyErr_NoMemory();
if (!PyArg_ParseTuple(args, "s|OO", &input, &pcpus, &pthreads)) {
evlist__put(evlist);
return NULL;
}
if (pthreads && pthreads != Py_None &&
!PyObject_TypeCheck(pthreads, &pyrf_thread_map__type)) {
PyErr_SetString(PyExc_TypeError, "threads must be a perf.thread_map or None");
evlist__put(evlist);
return NULL;
}
if (pcpus && pcpus != Py_None &&
!PyObject_TypeCheck(pcpus, &pyrf_cpu_map__type)) {
PyErr_SetString(PyExc_TypeError, "cpus must be a perf.cpu_map or None");
evlist__put(evlist);
return NULL;
}
threads = (pthreads && pthreads != Py_None) ?
((struct pyrf_thread_map *)pthreads)->threads : NULL;
cpus = (pcpus && pcpus != Py_None) ?
((struct pyrf_cpu_map *)pcpus)->cpus : NULL;
parse_events_error__init(&err);
perf_evlist__set_maps(evlist__core(evlist), cpus, threads);
if (parse_events(evlist, input, &err)) {
parse_events_error__print(&err, input);
PyErr_SetFromErrno(PyExc_OSError);
evlist__put(evlist);
return NULL;
}
result = pyrf_evlist__from_evlist(evlist);
evlist__put(evlist);
return result;
}
static PyObject *pyrf__parse_metrics(PyObject *self, PyObject *args)
{
const char *input, *pmu = NULL;
struct evlist *evlist = evlist__new();
PyObject *result;
PyObject *pcpus = NULL, *pthreads = NULL;
struct perf_cpu_map *cpus;
struct perf_thread_map *threads;
int ret;
if (!evlist)
return PyErr_NoMemory();
if (!PyArg_ParseTuple(args, "s|sOO", &input, &pmu, &pcpus, &pthreads)) {
evlist__put(evlist);
return NULL;
}
if (pthreads && pthreads != Py_None &&
!PyObject_TypeCheck(pthreads, &pyrf_thread_map__type)) {
PyErr_SetString(PyExc_TypeError, "threads must be a perf.thread_map or None");
evlist__put(evlist);
return NULL;
}
if (pcpus && pcpus != Py_None &&
!PyObject_TypeCheck(pcpus, &pyrf_cpu_map__type)) {
PyErr_SetString(PyExc_TypeError, "cpus must be a perf.cpu_map or None");
evlist__put(evlist);
return NULL;
}
threads = (pthreads && pthreads != Py_None) ?
((struct pyrf_thread_map *)pthreads)->threads : NULL;
cpus = (pcpus && pcpus != Py_None) ?
((struct pyrf_cpu_map *)pcpus)->cpus : NULL;
perf_evlist__set_maps(evlist__core(evlist), cpus, threads);
ret = metricgroup__parse_groups(evlist, pmu ?: "all",
/*cputype_filter=*/false, input,
/*metric_no_group=*/ false,
/*metric_no_merge=*/ false,
/*metric_no_threshold=*/ true,
/*user_requested_cpu_list=*/ NULL,
/*system_wide=*/true,
/*hardware_aware_grouping=*/ false);
if (ret) {
evlist__put(evlist);
errno = -ret;
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
result = pyrf_evlist__from_evlist(evlist);
evlist__put(evlist);
return result;
}
static PyObject *pyrf__metrics_groups(const struct pmu_metric *pm)
{
PyObject *groups = PyList_New(/*len=*/0);
const char *mg = pm->metric_group;
if (!groups)
return NULL;
while (mg) {
PyObject *val = NULL;
const char *sep = strchr(mg, ';');
size_t len = sep ? (size_t)(sep - mg) : strlen(mg);
if (len > 0) {
val = PyUnicode_FromStringAndSize(mg, len);
if (val)
PyList_Append(groups, val);
Py_XDECREF(val);
}
mg = sep ? sep + 1 : NULL;
}
return groups;
}
static int pyrf__metrics_cb(const struct pmu_metric *pm,
const struct pmu_metrics_table *table __maybe_unused,
void *vdata)
{
PyObject *py_list = vdata;
PyObject *dict = PyDict_New();
PyObject *key = dict ? PyUnicode_FromString("MetricGroup") : NULL;
PyObject *value = key ? pyrf__metrics_groups(pm) : NULL;
if (!value || PyDict_SetItem(dict, key, value) != 0) {
Py_XDECREF(key);
Py_XDECREF(value);
Py_XDECREF(dict);
return -ENOMEM;
}
if (!add_to_dict(dict, "MetricName", pm->metric_name) ||
!add_to_dict(dict, "PMU", pm->pmu) ||
!add_to_dict(dict, "MetricExpr", pm->metric_expr) ||
!add_to_dict(dict, "MetricThreshold", pm->metric_threshold) ||
!add_to_dict(dict, "ScaleUnit", pm->unit) ||
!add_to_dict(dict, "Compat", pm->compat) ||
!add_to_dict(dict, "BriefDescription", pm->desc) ||
!add_to_dict(dict, "PublicDescription", pm->long_desc) ||
PyList_Append(py_list, dict) != 0) {
Py_DECREF(dict);
return -ENOMEM;
}
Py_DECREF(dict);
return 0;
}
static PyObject *pyrf__metrics(PyObject *self, PyObject *args)
{
const struct pmu_metrics_table *table = pmu_metrics_table__find();
PyObject *list = PyList_New(/*len=*/0);
int ret;
if (!list)
return NULL;
ret = pmu_metrics_table__for_each_metric(table, pyrf__metrics_cb, list);
if (!ret)
ret = pmu_for_each_sys_metric(pyrf__metrics_cb, list);
if (ret) {
Py_DECREF(list);
errno = -ret;
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
return list;
}
struct pyrf_data {
PyObject_HEAD
struct perf_data data;
};
static int pyrf_data__init(struct pyrf_data *pdata, PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = { "path", "fd", NULL };
char *path = NULL;
int fd = -1;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|si", kwlist, &path, &fd))
return -1;
if (pdata->data.open)
perf_data__close(&pdata->data);
free((char *)pdata->data.path);
pdata->data.path = NULL;
if (fd != -1) {
struct stat st;
if (fstat(fd, &st) < 0 || !S_ISFIFO(st.st_mode)) {
PyErr_SetString(PyExc_ValueError,
"fd argument is only supported for pipes");
return -1;
}
if (!path)
path = "-";
else if (strcmp(path, "-") != 0) {
PyErr_SetString(PyExc_ValueError,
"path must be '-' when fd is provided");
return -1;
}
fd = dup(fd);
if (fd < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return -1;
}
} else if (path && strcmp(path, "-") == 0) {
fd = dup(0);
if (fd < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return -1;
}
}
if (!path)
path = "perf.data";
pdata->data.path = strdup(path);
if (!pdata->data.path) {
if (fd != -1)
close(fd);
PyErr_NoMemory();
return -1;
}
pdata->data.mode = PERF_DATA_MODE_READ;
pdata->data.file.fd = fd;
if (perf_data__open(&pdata->data) < 0) {
PyErr_Format(PyExc_IOError, "Failed to open perf data: %s",
pdata->data.path ? pdata->data.path : "perf.data");
return -1;
}
return 0;
}
static void pyrf_data__delete(struct pyrf_data *pdata)
{
perf_data__close(&pdata->data);
free((char *)pdata->data.path);
Py_TYPE(pdata)->tp_free((PyObject *)pdata);
}
static PyObject *pyrf_data__str(PyObject *self)
{
const struct pyrf_data *pdata = (const struct pyrf_data *)self;
if (!pdata->data.path)
return PyUnicode_FromString("[uninitialized]");
return PyUnicode_FromString(pdata->data.path);
}
static PyObject *pyrf_data__new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
struct pyrf_data *pdata;
pdata = (struct pyrf_data *)PyType_GenericNew(type, args, kwargs);
if (pdata)
memset(&pdata->data, 0, sizeof(pdata->data));
return (PyObject *)pdata;
}
static const char pyrf_data__doc[] = PyDoc_STR("perf data file object.");
static PyTypeObject pyrf_data__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.data",
.tp_basicsize = sizeof(struct pyrf_data),
.tp_dealloc = (destructor)pyrf_data__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_doc = pyrf_data__doc,
.tp_init = (initproc)pyrf_data__init,
.tp_repr = pyrf_data__str,
.tp_str = pyrf_data__str,
};
static int pyrf_data__setup_types(void)
{
pyrf_data__type.tp_new = pyrf_data__new;
return PyType_Ready(&pyrf_data__type);
}
struct pyrf_thread {
PyObject_HEAD
struct thread *thread;
};
static void pyrf_thread__delete(struct pyrf_thread *pthread)
{
thread__put(pthread->thread);
Py_TYPE(pthread)->tp_free((PyObject *)pthread);
}
static PyObject *pyrf_thread__comm(PyObject *obj)
{
struct pyrf_thread *pthread = (void *)obj;
const char *str;
CHECK_INITIALIZED(pthread->thread, "perf.thread");
str = thread__comm_str(pthread->thread);
if (!str)
Py_RETURN_NONE;
return PyUnicode_FromString(str);
}
static PyMethodDef pyrf_thread__methods[] = {
{
.ml_name = "comm",
.ml_meth = (PyCFunction)pyrf_thread__comm,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Comm(and) associated with this thread.")
},
{ .ml_name = NULL, }
};
static PyObject *pyrf_thread__get_pid(struct pyrf_thread *pthread, void *closure __maybe_unused)
{
return PyLong_FromLong(thread__pid(pthread->thread));
}
static PyObject *pyrf_thread__get_tid(struct pyrf_thread *pthread, void *closure __maybe_unused)
{
return PyLong_FromLong(thread__tid(pthread->thread));
}
static PyObject *pyrf_thread__get_ppid(struct pyrf_thread *pthread, void *closure __maybe_unused)
{
return PyLong_FromLong(thread__ppid(pthread->thread));
}
static PyObject *pyrf_thread__get_cpu(struct pyrf_thread *pthread, void *closure __maybe_unused)
{
return PyLong_FromLong(thread__cpu(pthread->thread));
}
static PyGetSetDef pyrf_thread__getset[] = {
{ .name = "pid", .get = (getter)pyrf_thread__get_pid, .doc = "process ID" },
{ .name = "tid", .get = (getter)pyrf_thread__get_tid, .doc = "thread ID" },
{ .name = "ppid", .get = (getter)pyrf_thread__get_ppid, .doc = "parent process ID" },
{ .name = "cpu", .get = (getter)pyrf_thread__get_cpu, .doc = "cpu number" },
{ .name = NULL }
};
static const char pyrf_thread__doc[] = PyDoc_STR("perf thread object.");
static PyTypeObject pyrf_thread__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.thread",
.tp_basicsize = sizeof(struct pyrf_thread),
.tp_dealloc = (destructor)pyrf_thread__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_methods = pyrf_thread__methods,
.tp_getset = pyrf_thread__getset,
.tp_doc = pyrf_thread__doc,
};
static int pyrf_thread__setup_types(void)
{
return PyType_Ready(&pyrf_thread__type);
}
static PyObject *pyrf_thread__from_thread(struct thread *thread)
{
struct pyrf_thread *pthread = PyObject_New(struct pyrf_thread, &pyrf_thread__type);
if (!pthread)
return NULL;
pthread->thread = thread__get(thread);
return (PyObject *)pthread;
}
struct pyrf_session {
PyObject_HEAD
struct perf_session *session;
struct perf_tool tool;
struct pyrf_data *pdata;
PyObject *sample;
PyObject *stat;
};
static int pyrf_session_tool__sample(const struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
struct pyrf_session *psession = container_of(tool, struct pyrf_session, tool);
PyObject *pyevent = pyrf_event__new(event, sample->evsel, psession->session, machine);
PyObject *ret;
if (pyevent == NULL)
return -ENOMEM;
ret = PyObject_CallFunction(psession->sample, "O", pyevent);
if (!ret) {
Py_DECREF(pyevent);
return -1;
}
Py_DECREF(ret);
Py_DECREF(pyevent);
return 0;
}
static int pyrf_session_tool__stat(const struct perf_tool *tool,
struct perf_session *session,
union perf_event *event)
{
struct pyrf_session *psession = container_of(tool, struct pyrf_session, tool);
struct evsel *evsel = evlist__id2evsel(session->evlist, event->stat.id);
PyObject *pyevent = pyrf_event__new(event, /*evsel=*/NULL, psession->session,
/*machine=*/NULL);
const char *name = evsel ? evsel__name(evsel) : "unknown";
PyObject *ret;
if (pyevent == NULL)
return -ENOMEM;
ret = PyObject_CallFunction(psession->stat, "Oz", pyevent, name);
if (!ret) {
Py_DECREF(pyevent);
return -1;
}
Py_DECREF(ret);
Py_DECREF(pyevent);
return 0;
}
static int pyrf_session_tool__stat_round(const struct perf_tool *tool,
struct perf_session *session __maybe_unused,
union perf_event *event)
{
struct pyrf_session *psession = container_of(tool, struct pyrf_session, tool);
PyObject *pyevent = pyrf_event__new(event, /*evsel=*/NULL, psession->session,
/*machine=*/NULL);
PyObject *ret;
if (pyevent == NULL)
return -ENOMEM;
ret = PyObject_CallFunction(psession->stat, "Oz", pyevent, NULL);
if (!ret) {
Py_DECREF(pyevent);
return -1;
}
Py_DECREF(ret);
Py_DECREF(pyevent);
return 0;
}
static PyObject *pyrf_session__find_thread(struct pyrf_session *psession, PyObject *args)
{
struct machine *machine;
struct thread *thread = NULL;
PyObject *result;
int pid;
CHECK_INITIALIZED(psession->session, "session");
if (!PyArg_ParseTuple(args, "i", &pid))
return NULL;
machine = &psession->session->machines.host;
thread = machine__find_thread(machine, pid, pid);
if (!thread) {
machine = perf_session__find_machine(psession->session, pid);
if (machine)
thread = machine__find_thread(machine, pid, pid);
}
if (!thread) {
PyErr_Format(PyExc_TypeError, "Failed to find thread %d", pid);
return NULL;
}
result = pyrf_thread__from_thread(thread);
thread__put(thread);
return result;
}
static PyObject *pyrf_session__new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
struct pyrf_data *pdata;
PyObject *sample = NULL, *stat = NULL;
static char *kwlist[] = { "data", "sample", "stat", NULL };
struct pyrf_session *psession;
struct perf_session *session;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!|OO", kwlist, &pyrf_data__type, &pdata,
&sample, &stat))
return NULL;
psession = PyObject_New(struct pyrf_session, type);
if (!psession)
return NULL;
psession->session = NULL;
psession->sample = NULL;
psession->stat = NULL;
psession->pdata = NULL;
Py_INCREF(pdata);
psession->pdata = pdata;
perf_tool__init(&psession->tool, /*ordered_events=*/true);
psession->tool.ordering_requires_timestamps = true;
#define ADD_TOOL(name) \
do { \
if (name) { \
if (!PyCallable_Check(name)) { \
PyErr_SetString(PyExc_TypeError, #name " must be callable"); \
goto err_out; \
} \
psession->tool.name = pyrf_session_tool__##name; \
Py_INCREF(name); \
psession->name = name; \
} \
} while (0)
ADD_TOOL(sample);
ADD_TOOL(stat);
#undef ADD_TOOL
if (stat)
psession->tool.stat_round = pyrf_session_tool__stat_round;
psession->tool.comm = perf_event__process_comm;
psession->tool.mmap = perf_event__process_mmap;
psession->tool.mmap2 = perf_event__process_mmap2;
psession->tool.namespaces = perf_event__process_namespaces;
psession->tool.cgroup = perf_event__process_cgroup;
psession->tool.exit = perf_event__process_exit;
psession->tool.fork = perf_event__process_fork;
psession->tool.ksymbol = perf_event__process_ksymbol;
psession->tool.text_poke = perf_event__process_text_poke;
psession->tool.build_id = perf_event__process_build_id;
psession->tool.attr = perf_event__process_attr;
psession->tool.feature = perf_event__process_feature;
session = perf_session__new(&pdata->data, &psession->tool);
if (IS_ERR(session)) {
PyErr_Format(PyExc_IOError, "failed to create session: %ld", PTR_ERR(session));
goto err_out;
}
psession->session = session;
symbol_conf.use_callchain = true;
symbol_conf.show_kernel_path = true;
symbol_conf.inline_name = false;
if (symbol__init(perf_session__env(session)) < 0) {
PyErr_SetString(PyExc_OSError, "perf: symbol__init failed");
goto err_out;
}
return (PyObject *)psession;
err_out:
Py_DECREF(psession);
return NULL;
}
static void pyrf_session__delete(struct pyrf_session *psession)
{
perf_session__delete(psession->session);
Py_XDECREF(psession->pdata);
Py_XDECREF(psession->sample);
Py_XDECREF(psession->stat);
Py_TYPE(psession)->tp_free((PyObject *)psession);
}
static PyObject *pyrf_session__find_thread_events(struct pyrf_session *psession)
{
int err;
CHECK_INITIALIZED(psession->session, "session");
err = perf_session__process_events(psession->session);
if (PyErr_Occurred())
return NULL;
if (err < 0) {
PyErr_Format(PyExc_OSError, "Process events failed: %d", err);
return NULL;
}
Py_RETURN_NONE;
}
static PyMethodDef pyrf_session__methods[] = {
{
.ml_name = "process_events",
.ml_meth = (PyCFunction)pyrf_session__find_thread_events,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Iterate and process events.")
},
{
.ml_name = "find_thread",
.ml_meth = (PyCFunction)pyrf_session__find_thread,
.ml_flags = METH_VARARGS,
.ml_doc = PyDoc_STR("Returns the thread associated with a pid.")
},
{ .ml_name = NULL, }
};
static const char pyrf_session__doc[] = PyDoc_STR("perf session object.");
static PyObject *pyrf_session__getattro(struct pyrf_session *psession, PyObject *attr_name)
{
if (!psession->session) {
PyErr_SetString(PyExc_ValueError, "session not initialized");
return NULL;
}
return PyObject_GenericGetAttr((PyObject *) psession, attr_name);
}
static int pyrf_session__setattro(struct pyrf_session *psession, PyObject *attr_name,
PyObject *value)
{
if (!psession->session) {
PyErr_SetString(PyExc_ValueError, "session not initialized");
return -1;
}
return PyObject_GenericSetAttr((PyObject *) psession, attr_name, value);
}
static PyTypeObject pyrf_session__type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "perf.session",
.tp_basicsize = sizeof(struct pyrf_session),
.tp_dealloc = (destructor)pyrf_session__delete,
.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
.tp_methods = pyrf_session__methods,
.tp_doc = pyrf_session__doc,
.tp_new = pyrf_session__new,
.tp_getattro = (getattrofunc) pyrf_session__getattro,
.tp_setattro = (setattrofunc) pyrf_session__setattro,
};
static int pyrf_session__setup_types(void)
{
return PyType_Ready(&pyrf_session__type);
}
static PyObject *pyrf__syscall_name(PyObject *self, PyObject *args, PyObject *kwargs)
{
const char *name;
int id;
int elf_machine = EM_HOST;
static char *kwlist[] = { "id", "elf_machine", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|$i", kwlist, &id, &elf_machine))
return NULL;
name = syscalltbl__name(elf_machine, id);
if (!name)
Py_RETURN_NONE;
return PyUnicode_FromString(name);
}
static PyObject *pyrf__syscall_id(PyObject *self, PyObject *args, PyObject *kwargs)
{
const char *name;
int id;
int elf_machine = EM_HOST;
static char *kwlist[] = { "name", "elf_machine", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|$i", kwlist, &name, &elf_machine))
return NULL;
id = syscalltbl__id(elf_machine, name);
if (id < 0) {
PyErr_Format(PyExc_ValueError, "Failed to find syscall %s", name);
return NULL;
}
return PyLong_FromLong(id);
}
static PyObject *pyrf__config_get(PyObject *self, PyObject *args)
{
const char *config_name, *val;
if (!PyArg_ParseTuple(args, "s", &config_name))
return NULL;
val = perf_config_get(config_name);
if (!val)
Py_RETURN_NONE;
return PyUnicode_FromString(val);
}
static PyMethodDef perf__methods[] = {
{
.ml_name = "config_get",
.ml_meth = (PyCFunction) pyrf__config_get,
.ml_flags = METH_VARARGS,
.ml_doc = PyDoc_STR("Get a perf config value.")
},
{
.ml_name = "metrics",
.ml_meth = (PyCFunction) pyrf__metrics,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR(
"Returns a list of metrics represented as string values in dictionaries.")
},
{
.ml_name = "tracepoint",
.ml_meth = (PyCFunction) pyrf__tracepoint,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("Get tracepoint config.")
},
{
.ml_name = "parse_events",
.ml_meth = (PyCFunction) pyrf__parse_events,
.ml_flags = METH_VARARGS,
.ml_doc = PyDoc_STR("Parse a string of events and return an evlist.")
},
{
.ml_name = "parse_metrics",
.ml_meth = (PyCFunction) pyrf__parse_metrics,
.ml_flags = METH_VARARGS,
.ml_doc = PyDoc_STR(
"Parse a string of metrics or metric groups and return an evlist.")
},
{
.ml_name = "pmus",
.ml_meth = (PyCFunction) pyrf__pmus,
.ml_flags = METH_NOARGS,
.ml_doc = PyDoc_STR("Returns a sequence of pmus.")
},
{
.ml_name = "syscall_name",
.ml_meth = (PyCFunction) pyrf__syscall_name,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("Turns a syscall number to a string.")
},
{
.ml_name = "syscall_id",
.ml_meth = (PyCFunction) pyrf__syscall_id,
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("Turns a syscall name to a number.")
},
{ .ml_name = NULL, }
};
PyMODINIT_FUNC PyInit_perf(void)
{
PyObject *obj;
int i;
PyObject *dict;
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
"perf", /* m_name */
"", /* m_doc */
-1, /* m_size */
perf__methods, /* m_methods */
NULL, /* m_reload */
NULL, /* m_traverse */
NULL, /* m_clear */
NULL, /* m_free */
};
PyObject *module = PyModule_Create(&moduledef);
if (module == NULL)
return NULL;
if (pyrf_event__setup_types() < 0 ||
pyrf_evlist__setup_types() < 0 ||
pyrf_evsel__setup_types() < 0 ||
pyrf_thread_map__setup_types() < 0 ||
pyrf_cpu_map__setup_types() < 0 ||
pyrf_pmu_iterator__setup_types() < 0 ||
pyrf_pmu__setup_types() < 0 ||
pyrf_counts_values__setup_types() < 0 ||
pyrf_data__setup_types() < 0 ||
pyrf_session__setup_types() < 0 ||
pyrf_thread__setup_types() < 0) {
Py_DECREF(module);
return NULL;
}
/* The page_size is placed in util object. */
page_size = sysconf(_SC_PAGE_SIZE);
Py_INCREF(&pyrf_evlist__type);
PyModule_AddObject(module, "evlist", (PyObject *)&pyrf_evlist__type);
Py_INCREF(&pyrf_evsel__type);
PyModule_AddObject(module, "evsel", (PyObject *)&pyrf_evsel__type);
Py_INCREF(&pyrf_thread__type);
PyModule_AddObject(module, "thread", (PyObject *)&pyrf_thread__type);
Py_INCREF(&pyrf_callchain__type);
PyModule_AddObject(module, "callchain", (PyObject *)&pyrf_callchain__type);
Py_INCREF(&pyrf_callchain_node__type);
PyModule_AddObject(module, "callchain_node", (PyObject *)&pyrf_callchain_node__type);
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);
Py_INCREF(&pyrf_comm_event__type);
PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
Py_INCREF(&pyrf_task_event__type);
PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
Py_INCREF(&pyrf_throttle_event__type);
PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
Py_INCREF(&pyrf_task_event__type);
PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
Py_INCREF(&pyrf_read_event__type);
PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
Py_INCREF(&pyrf_sample_event__type);
PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
Py_INCREF(&pyrf_context_switch_event__type);
PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
Py_INCREF(&pyrf_stat_event__type);
PyModule_AddObject(module, "stat_event", (PyObject *)&pyrf_stat_event__type);
Py_INCREF(&pyrf_stat_round_event__type);
PyModule_AddObject(module, "stat_round_event", (PyObject *)&pyrf_stat_round_event__type);
Py_INCREF(&pyrf_thread_map__type);
PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
Py_INCREF(&pyrf_cpu_map__type);
PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
Py_INCREF(&pyrf_counts_values__type);
PyModule_AddObject(module, "counts_values", (PyObject *)&pyrf_counts_values__type);
Py_INCREF(&pyrf_data__type);
PyModule_AddObject(module, "data", (PyObject *)&pyrf_data__type);
Py_INCREF(&pyrf_session__type);
PyModule_AddObject(module, "session", (PyObject *)&pyrf_session__type);
Py_INCREF(&pyrf_branch_entry__type);
if (PyModule_AddObject(module, "branch_entry", (PyObject *)&pyrf_branch_entry__type) < 0) {
Py_DECREF(&pyrf_branch_entry__type);
goto error;
}
Py_INCREF(&pyrf_branch_stack__type);
if (PyModule_AddObject(module, "branch_stack", (PyObject *)&pyrf_branch_stack__type) < 0) {
Py_DECREF(&pyrf_branch_stack__type);
goto error;
}
dict = PyModule_GetDict(module);
if (dict == NULL)
goto error;
for (i = 0; perf__constants[i].name != NULL; i++) {
obj = PyLong_FromLong(perf__constants[i].value);
if (obj == NULL)
goto error;
PyDict_SetItemString(dict, perf__constants[i].name, obj);
Py_DECREF(obj);
}
error:
if (PyErr_Occurred()) {
Py_XDECREF(module);
return NULL;
}
return module;
}
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