Merge branch 'perf/core' of...

Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

tools/perf/builtin-record.c

@@ -30,8 +30,6 @@
 #include <sched.h>
 #include <sys/mman.h>
 
-#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
-
 enum write_mode_t {
 	WRITE_FORCE,
 	WRITE_APPEND
@@ -438,7 +436,6 @@ static void mmap_read_all(void)
 
 static int __cmd_record(int argc, const char **argv)
 {
-	int i;
 	struct stat st;
 	int flags;
 	int err;
@@ -682,7 +679,6 @@ static int __cmd_record(int argc, const char **argv)
 
 	for (;;) {
 		int hits = samples;
-		int thread;
 
 		mmap_read_all();
 
@@ -693,19 +689,8 @@ static int __cmd_record(int argc, const char **argv)
 			waking++;
 		}
 
-		if (done) {
-			for (i = 0; i < evsel_list->cpus->nr; i++) {
-				struct perf_evsel *pos;
-
-				list_for_each_entry(pos, &evsel_list->entries, node) {
-					for (thread = 0;
-						thread < evsel_list->threads->nr;
-						thread++)
-						ioctl(FD(pos, i, thread),
-							PERF_EVENT_IOC_DISABLE);
-				}
-			}
-		}
+		if (done)
+			perf_evlist__disable(evsel_list);
 	}
 
 	if (quiet || signr == SIGUSR1)

tools/perf/builtin-report.c

@@ -162,23 +162,22 @@ static int perf_session__setup_sample_type(struct perf_session *self)
 {
 	if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
 		if (sort__has_parent) {
-			fprintf(stderr, "selected --sort parent, but no"
-					" callchain data. Did you call"
-					" perf record without -g?\n");
+			ui__warning("Selected --sort parent, but no "
+				    "callchain data. Did you call "
+				    "'perf record' without -g?\n");
 			return -EINVAL;
 		}
 		if (symbol_conf.use_callchain) {
-			fprintf(stderr, "selected -g but no callchain data."
-					" Did you call perf record without"
-					" -g?\n");
+			ui__warning("Selected -g but no callchain data. Did "
+				    "you call 'perf record' without -g?\n");
 			return -1;
 		}
 	} else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE &&
 		   !symbol_conf.use_callchain) {
 			symbol_conf.use_callchain = true;
 			if (callchain_register_param(&callchain_param) < 0) {
-				fprintf(stderr, "Can't register callchain"
-						" params\n");
+				ui__warning("Can't register callchain "
+					    "params.\n");
 				return -EINVAL;
 			}
 	}

tools/perf/util/evlist.c

@@ -91,6 +91,19 @@ int perf_evlist__add_default(struct perf_evlist *evlist)
 	return 0;
 }
 
+void perf_evlist__disable(struct perf_evlist *evlist)
+{
+	int cpu, thread;
+	struct perf_evsel *pos;
+
+	for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
+		list_for_each_entry(pos, &evlist->entries, node) {
+			for (thread = 0; thread < evlist->threads->nr; thread++)
+				ioctl(FD(pos, cpu, thread), PERF_EVENT_IOC_DISABLE);
+		}
+	}
+}
+
 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
 {
 	int nfds = evlist->cpus->nr * evlist->threads->nr * evlist->nr_entries;

tools/perf/util/evlist.h

@@ -53,6 +53,8 @@ int perf_evlist__alloc_mmap(struct perf_evlist *evlist);
 int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite);
 void perf_evlist__munmap(struct perf_evlist *evlist);
 
+void perf_evlist__disable(struct perf_evlist *evlist);
+
 static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
 					 struct cpu_map *cpus,
 					 struct thread_map *threads)

tools/perf/util/header.c

@@ -189,8 +189,8 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
 			  const char *name, bool is_kallsyms)
 {
 	const size_t size = PATH_MAX;
-	char *realname, *filename = malloc(size),
-	     *linkname = malloc(size), *targetname;
+	char *realname, *filename = zalloc(size),
+	     *linkname = zalloc(size), *targetname;
 	int len, err = -1;
 
 	if (is_kallsyms) {
@@ -254,8 +254,8 @@ static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size,
 int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir)
 {
 	const size_t size = PATH_MAX;
-	char *filename = malloc(size),
-	     *linkname = malloc(size);
+	char *filename = zalloc(size),
+	     *linkname = zalloc(size);
 	int err = -1;
 
 	if (filename == NULL || linkname == NULL)

tools/perf/util/python.c

@@ -187,14 +187,117 @@ static PyTypeObject pyrf_throttle_event__type = {
 	.tp_repr	= (reprfunc)pyrf_throttle_event__repr,
 };
 
+static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
+
+static PyMemberDef pyrf_lost_event__members[] = {
+	sample_members
+	member_def(lost_event, id, T_ULONGLONG, "event id"),
+	member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
+	{ .name = NULL, },
+};
+
+static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
+{
+	PyObject *ret;
+	char *s;
+
+	if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
+			 "lost: %#" PRIx64 " }",
+		     pevent->event.lost.id, pevent->event.lost.lost) < 0) {
+		ret = PyErr_NoMemory();
+	} else {
+		ret = PyString_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_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
+	.tp_doc		= pyrf_lost_event__doc,
+	.tp_members	= pyrf_lost_event__members,
+	.tp_repr	= (reprfunc)pyrf_lost_event__repr,
+};
+
+static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
+
+static PyMemberDef pyrf_read_event__members[] = {
+	sample_members
+	member_def(read_event, pid, T_UINT, "event pid"),
+	member_def(read_event, tid, T_UINT, "event tid"),
+	{ .name = NULL, },
+};
+
+static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
+{
+	return PyString_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_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
+	.tp_doc		= pyrf_read_event__doc,
+	.tp_members	= pyrf_read_event__members,
+	.tp_repr	= (reprfunc)pyrf_read_event__repr,
+};
+
+static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
+
+static PyMemberDef pyrf_sample_event__members[] = {
+	sample_members
+	member_def(perf_event_header, type, T_UINT, "event type"),
+	{ .name = NULL, },
+};
+
+static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
+{
+	PyObject *ret;
+	char *s;
+
+	if (asprintf(&s, "{ type: sample }") < 0) {
+		ret = PyErr_NoMemory();
+	} else {
+		ret = PyString_FromString(s);
+		free(s);
+	}
+	return ret;
+}
+
+static PyTypeObject pyrf_sample_event__type = {
+	PyVarObject_HEAD_INIT(NULL, 0)
+	.tp_name	= "perf.sample_event",
+	.tp_basicsize	= sizeof(struct pyrf_event),
+	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
+	.tp_doc		= pyrf_sample_event__doc,
+	.tp_members	= pyrf_sample_event__members,
+	.tp_repr	= (reprfunc)pyrf_sample_event__repr,
+};
+
 static int pyrf_event__setup_types(void)
 {
 	int err;
 	pyrf_mmap_event__type.tp_new =
 	pyrf_task_event__type.tp_new =
 	pyrf_comm_event__type.tp_new =
+	pyrf_lost_event__type.tp_new =
+	pyrf_read_event__type.tp_new =
+	pyrf_sample_event__type.tp_new =
 	pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 	err = PyType_Ready(&pyrf_mmap_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);
@@ -206,20 +309,26 @@ static int pyrf_event__setup_types(void)
 	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;
 out:
 	return err;
 }
 
 static PyTypeObject *pyrf_event__type[] = {
 	[PERF_RECORD_MMAP]	 = &pyrf_mmap_event__type,
-	[PERF_RECORD_LOST]	 = &pyrf_mmap_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_mmap_event__type,
-	[PERF_RECORD_SAMPLE]	 = &pyrf_mmap_event__type,
+	[PERF_RECORD_READ]	 = &pyrf_read_event__type,
+	[PERF_RECORD_SAMPLE]	 = &pyrf_sample_event__type,
 };
 
 static PyObject *pyrf_event__new(union perf_event *event)