[mirror_ubuntu-kernels.git] / tools / perf / util / evsel.c

/*
 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
 *
 * Parts came from builtin-{top,stat,record}.c, see those files for further
 * copyright notes.
 *
 * Released under the GPL v2. (and only v2, not any later version)
 */

#include "evsel.h"
#include "evlist.h"
#include "util.h"
#include "cpumap.h"
#include "thread_map.h"

#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))

int __perf_evsel__sample_size(u64 sample_type)
{
	u64 mask = sample_type & PERF_SAMPLE_MASK;
	int size = 0;
	int i;

	for (i = 0; i < 64; i++) {
		if (mask & (1ULL << i))
			size++;
	}

	size *= sizeof(u64);

	return size;
}

void perf_evsel__init(struct perf_evsel *evsel,
		      struct perf_event_attr *attr, int idx)
{
	evsel->idx	   = idx;
	evsel->attr	   = *attr;
	INIT_LIST_HEAD(&evsel->node);
}

struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)
{
	struct perf_evsel *evsel = zalloc(sizeof(*evsel));

	if (evsel != NULL)
		perf_evsel__init(evsel, attr, idx);

	return evsel;
}

int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
{
	int cpu, thread;
	evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));

	if (evsel->fd) {
		for (cpu = 0; cpu < ncpus; cpu++) {
			for (thread = 0; thread < nthreads; thread++) {
				FD(evsel, cpu, thread) = -1;
			}
		}
	}

	return evsel->fd != NULL ? 0 : -ENOMEM;
}

int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
{
	evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
	if (evsel->sample_id == NULL)
		return -ENOMEM;

	evsel->id = zalloc(ncpus * nthreads * sizeof(u64));
	if (evsel->id == NULL) {
		xyarray__delete(evsel->sample_id);
		evsel->sample_id = NULL;
		return -ENOMEM;
	}

	return 0;
}

int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus)
{
	evsel->counts = zalloc((sizeof(*evsel->counts) +
				(ncpus * sizeof(struct perf_counts_values))));
	return evsel->counts != NULL ? 0 : -ENOMEM;
}

void perf_evsel__free_fd(struct perf_evsel *evsel)
{
	xyarray__delete(evsel->fd);
	evsel->fd = NULL;
}

void perf_evsel__free_id(struct perf_evsel *evsel)
{
	xyarray__delete(evsel->sample_id);
	evsel->sample_id = NULL;
	free(evsel->id);
	evsel->id = NULL;
}

void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
{
	int cpu, thread;

	for (cpu = 0; cpu < ncpus; cpu++)
		for (thread = 0; thread < nthreads; ++thread) {
			close(FD(evsel, cpu, thread));
			FD(evsel, cpu, thread) = -1;
		}
}

void perf_evsel__exit(struct perf_evsel *evsel)
{
	assert(list_empty(&evsel->node));
	xyarray__delete(evsel->fd);
	xyarray__delete(evsel->sample_id);
	free(evsel->id);
}

void perf_evsel__delete(struct perf_evsel *evsel)
{
	perf_evsel__exit(evsel);
	close_cgroup(evsel->cgrp);
	free(evsel->name);
	free(evsel);
}

int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
			      int cpu, int thread, bool scale)
{
	struct perf_counts_values count;
	size_t nv = scale ? 3 : 1;

	if (FD(evsel, cpu, thread) < 0)
		return -EINVAL;

	if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0)
		return -ENOMEM;

	if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
		return -errno;

	if (scale) {
		if (count.run == 0)
			count.val = 0;
		else if (count.run < count.ena)
			count.val = (u64)((double)count.val * count.ena / count.run + 0.5);
	} else
		count.ena = count.run = 0;

	evsel->counts->cpu[cpu] = count;
	return 0;
}

int __perf_evsel__read(struct perf_evsel *evsel,
		       int ncpus, int nthreads, bool scale)
{
	size_t nv = scale ? 3 : 1;
	int cpu, thread;
	struct perf_counts_values *aggr = &evsel->counts->aggr, count;

	aggr->val = aggr->ena = aggr->run = 0;

	for (cpu = 0; cpu < ncpus; cpu++) {
		for (thread = 0; thread < nthreads; thread++) {
			if (FD(evsel, cpu, thread) < 0)
				continue;

			if (readn(FD(evsel, cpu, thread),
				  &count, nv * sizeof(u64)) < 0)
				return -errno;

			aggr->val += count.val;
			if (scale) {
				aggr->ena += count.ena;
				aggr->run += count.run;
			}
		}
	}

	evsel->counts->scaled = 0;
	if (scale) {
		if (aggr->run == 0) {
			evsel->counts->scaled = -1;
			aggr->val = 0;
			return 0;
		}

		if (aggr->run < aggr->ena) {
			evsel->counts->scaled = 1;
			aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5);
		}
	} else
		aggr->ena = aggr->run = 0;

	return 0;
}

static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
			      struct thread_map *threads, bool group)
{
	int cpu, thread;
	unsigned long flags = 0;
	int pid = -1;

	if (evsel->fd == NULL &&
	    perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0)
		return -1;

	if (evsel->cgrp) {
		flags = PERF_FLAG_PID_CGROUP;
		pid = evsel->cgrp->fd;
	}

	for (cpu = 0; cpu < cpus->nr; cpu++) {
		int group_fd = -1;

		for (thread = 0; thread < threads->nr; thread++) {

			if (!evsel->cgrp)
				pid = threads->map[thread];

			FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr,
								     pid,
								     cpus->map[cpu],
								     group_fd, flags);
			if (FD(evsel, cpu, thread) < 0)
				goto out_close;

			if (group && group_fd == -1)
				group_fd = FD(evsel, cpu, thread);
		}
	}

	return 0;

out_close:
	do {
		while (--thread >= 0) {
			close(FD(evsel, cpu, thread));
			FD(evsel, cpu, thread) = -1;
		}
		thread = threads->nr;
	} while (--cpu >= 0);
	return -1;
}

static struct {
	struct cpu_map map;
	int cpus[1];
} empty_cpu_map = {
	.map.nr	= 1,
	.cpus	= { -1, },
};

static struct {
	struct thread_map map;
	int threads[1];
} empty_thread_map = {
	.map.nr	 = 1,
	.threads = { -1, },
};

int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
		     struct thread_map *threads, bool group)
{
	if (cpus == NULL) {
		/* Work around old compiler warnings about strict aliasing */
		cpus = &empty_cpu_map.map;
	}

	if (threads == NULL)
		threads = &empty_thread_map.map;

	return __perf_evsel__open(evsel, cpus, threads, group);
}

int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
			     struct cpu_map *cpus, bool group)
{
	return __perf_evsel__open(evsel, cpus, &empty_thread_map.map, group);
}

int perf_evsel__open_per_thread(struct perf_evsel *evsel,
				struct thread_map *threads, bool group)
{
	return __perf_evsel__open(evsel, &empty_cpu_map.map, threads, group);
}

static int perf_event__parse_id_sample(const union perf_event *event, u64 type,
				       struct perf_sample *sample)
{
	const u64 *array = event->sample.array;

	array += ((event->header.size -
		   sizeof(event->header)) / sizeof(u64)) - 1;

	if (type & PERF_SAMPLE_CPU) {
		u32 *p = (u32 *)array;
		sample->cpu = *p;
		array--;
	}

	if (type & PERF_SAMPLE_STREAM_ID) {
		sample->stream_id = *array;
		array--;
	}

	if (type & PERF_SAMPLE_ID) {
		sample->id = *array;
		array--;
	}

	if (type & PERF_SAMPLE_TIME) {
		sample->time = *array;
		array--;
	}

	if (type & PERF_SAMPLE_TID) {
		u32 *p = (u32 *)array;
		sample->pid = p[0];
		sample->tid = p[1];
	}

	return 0;
}

static bool sample_overlap(const union perf_event *event,
			   const void *offset, u64 size)
{
	const void *base = event;

	if (offset + size > base + event->header.size)
		return true;

	return false;
}

int perf_event__parse_sample(const union perf_event *event, u64 type,
			     int sample_size, bool sample_id_all,
			     struct perf_sample *data)
{
	const u64 *array;

	data->cpu = data->pid = data->tid = -1;
	data->stream_id = data->id = data->time = -1ULL;

	if (event->header.type != PERF_RECORD_SAMPLE) {
		if (!sample_id_all)
			return 0;
		return perf_event__parse_id_sample(event, type, data);
	}

	array = event->sample.array;

	if (sample_size + sizeof(event->header) > event->header.size)
		return -EFAULT;

	if (type & PERF_SAMPLE_IP) {
		data->ip = event->ip.ip;
		array++;
	}

	if (type & PERF_SAMPLE_TID) {
		u32 *p = (u32 *)array;
		data->pid = p[0];
		data->tid = p[1];
		array++;
	}

	if (type & PERF_SAMPLE_TIME) {
		data->time = *array;
		array++;
	}

	if (type & PERF_SAMPLE_ADDR) {
		data->addr = *array;
		array++;
	}

	data->id = -1ULL;
	if (type & PERF_SAMPLE_ID) {
		data->id = *array;
		array++;
	}

	if (type & PERF_SAMPLE_STREAM_ID) {
		data->stream_id = *array;
		array++;
	}

	if (type & PERF_SAMPLE_CPU) {
		u32 *p = (u32 *)array;
		data->cpu = *p;
		array++;
	}

	if (type & PERF_SAMPLE_PERIOD) {
		data->period = *array;
		array++;
	}

	if (type & PERF_SAMPLE_READ) {
		fprintf(stderr, "PERF_SAMPLE_READ is unsuported for now\n");
		return -1;
	}

	if (type & PERF_SAMPLE_CALLCHAIN) {
		if (sample_overlap(event, array, sizeof(data->callchain->nr)))
			return -EFAULT;

		data->callchain = (struct ip_callchain *)array;

		if (sample_overlap(event, array, data->callchain->nr))
			return -EFAULT;

		array += 1 + data->callchain->nr;
	}

	if (type & PERF_SAMPLE_RAW) {
		u32 *p = (u32 *)array;

		if (sample_overlap(event, array, sizeof(u32)))
			return -EFAULT;

		data->raw_size = *p;
		p++;

		if (sample_overlap(event, p, data->raw_size))
			return -EFAULT;

		data->raw_data = p;
	}

	return 0;
}
Commit	Line	Data
f8a95309 ACM	1	/*
	2	* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
	3	*
	4	* Parts came from builtin-{top,stat,record}.c, see those files for further
	5	* copyright notes.
	6	*
	7	* Released under the GPL v2. (and only v2, not any later version)
	8	*/
	9
69aad6f1	10	#include "evsel.h"
70082dd9	11	#include "evlist.h"
69aad6f1	12	#include "util.h"
86bd5e86	13	#include "cpumap.h"
fd78260b	14	#include "thread_map.h"
69aad6f1	15
c52b12ed ACM	16	#define FD(e, x, y) ((int )xyarray__entry(e->fd, x, y))
c52b12ed ACM	17
56722381 ACM	18	int __perf_evsel__sample_size(u64 sample_type)
	19	{
	20	u64 mask = sample_type & PERF_SAMPLE_MASK;
	21	int size = 0;
	22	int i;
	23
	24	for (i = 0; i < 64; i++) {
	25	if (mask & (1ULL << i))
	26	size++;
	27	}
	28
	29	size *= sizeof(u64);
	30
	31	return size;
	32	}
	33
ef1d1af2 ACM	34	void perf_evsel__init(struct perf_evsel *evsel,
	35	struct perf_event_attr *attr, int idx)
	36	{
	37	evsel->idx = idx;
	38	evsel->attr = *attr;
	39	INIT_LIST_HEAD(&evsel->node);
	40	}
	41
23a2f3ab	42	struct perf_evsel perf_evsel__new(struct perf_event_attr attr, int idx)
69aad6f1 ACM	43	{
	44	struct perf_evsel evsel = zalloc(sizeof(evsel));
	45
ef1d1af2 ACM	46	if (evsel != NULL)
ef1d1af2 ACM	47	perf_evsel__init(evsel, attr, idx);
69aad6f1 ACM	48
	49	return evsel;
	50	}
	51
	52	int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
	53	{
4af4c955	54	int cpu, thread;
69aad6f1	55	evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));
4af4c955 DA	56
	57	if (evsel->fd) {
	58	for (cpu = 0; cpu < ncpus; cpu++) {
	59	for (thread = 0; thread < nthreads; thread++) {
	60	FD(evsel, cpu, thread) = -1;
	61	}
	62	}
	63	}
	64
69aad6f1 ACM	65	return evsel->fd != NULL ? 0 : -ENOMEM;
	66	}
	67
70db7533 ACM	68	int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
70db7533 ACM	69	{
a91e5431 ACM	70	evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
	71	if (evsel->sample_id == NULL)
	72	return -ENOMEM;
	73
	74	evsel->id = zalloc(ncpus * nthreads * sizeof(u64));
	75	if (evsel->id == NULL) {
	76	xyarray__delete(evsel->sample_id);
	77	evsel->sample_id = NULL;
	78	return -ENOMEM;
	79	}
	80
	81	return 0;
70db7533 ACM	82	}
70db7533 ACM	83
c52b12ed ACM	84	int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus)
	85	{
	86	evsel->counts = zalloc((sizeof(*evsel->counts) +
	87	(ncpus * sizeof(struct perf_counts_values))));
	88	return evsel->counts != NULL ? 0 : -ENOMEM;
	89	}
	90
69aad6f1 ACM	91	void perf_evsel__free_fd(struct perf_evsel *evsel)
	92	{
	93	xyarray__delete(evsel->fd);
	94	evsel->fd = NULL;
	95	}
	96
70db7533 ACM	97	void perf_evsel__free_id(struct perf_evsel *evsel)
70db7533 ACM	98	{
a91e5431 ACM	99	xyarray__delete(evsel->sample_id);
	100	evsel->sample_id = NULL;
	101	free(evsel->id);
70db7533 ACM	102	evsel->id = NULL;
	103	}
	104
c52b12ed ACM	105	void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
	106	{
	107	int cpu, thread;
	108
	109	for (cpu = 0; cpu < ncpus; cpu++)
	110	for (thread = 0; thread < nthreads; ++thread) {
	111	close(FD(evsel, cpu, thread));
	112	FD(evsel, cpu, thread) = -1;
	113	}
	114	}
	115
ef1d1af2	116	void perf_evsel__exit(struct perf_evsel *evsel)
69aad6f1 ACM	117	{
	118	assert(list_empty(&evsel->node));
	119	xyarray__delete(evsel->fd);
a91e5431 ACM	120	xyarray__delete(evsel->sample_id);
a91e5431 ACM	121	free(evsel->id);
ef1d1af2 ACM	122	}
	123
	124	void perf_evsel__delete(struct perf_evsel *evsel)
	125	{
	126	perf_evsel__exit(evsel);
023695d9	127	close_cgroup(evsel->cgrp);
f0c55bcf	128	free(evsel->name);
69aad6f1 ACM	129	free(evsel);
69aad6f1 ACM	130	}
c52b12ed ACM	131
	132	int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
	133	int cpu, int thread, bool scale)
	134	{
	135	struct perf_counts_values count;
	136	size_t nv = scale ? 3 : 1;
	137
	138	if (FD(evsel, cpu, thread) < 0)
	139	return -EINVAL;
	140
4eed11d5 ACM	141	if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0)
	142	return -ENOMEM;
	143
c52b12ed ACM	144	if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
	145	return -errno;
	146
	147	if (scale) {
	148	if (count.run == 0)
	149	count.val = 0;
	150	else if (count.run < count.ena)
	151	count.val = (u64)((double)count.val * count.ena / count.run + 0.5);
	152	} else
	153	count.ena = count.run = 0;
	154
	155	evsel->counts->cpu[cpu] = count;
	156	return 0;
	157	}
	158
	159	int __perf_evsel__read(struct perf_evsel *evsel,
	160	int ncpus, int nthreads, bool scale)
	161	{
	162	size_t nv = scale ? 3 : 1;
	163	int cpu, thread;
	164	struct perf_counts_values *aggr = &evsel->counts->aggr, count;
	165
52bcd994	166	aggr->val = aggr->ena = aggr->run = 0;
c52b12ed ACM	167
	168	for (cpu = 0; cpu < ncpus; cpu++) {
	169	for (thread = 0; thread < nthreads; thread++) {
	170	if (FD(evsel, cpu, thread) < 0)
	171	continue;
	172
	173	if (readn(FD(evsel, cpu, thread),
	174	&count, nv * sizeof(u64)) < 0)
	175	return -errno;
	176
	177	aggr->val += count.val;
	178	if (scale) {
	179	aggr->ena += count.ena;
	180	aggr->run += count.run;
	181	}
	182	}
	183	}
	184
	185	evsel->counts->scaled = 0;
	186	if (scale) {
	187	if (aggr->run == 0) {
	188	evsel->counts->scaled = -1;
	189	aggr->val = 0;
	190	return 0;
	191	}
	192
	193	if (aggr->run < aggr->ena) {
	194	evsel->counts->scaled = 1;
	195	aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5);
	196	}
	197	} else
	198	aggr->ena = aggr->run = 0;
	199
	200	return 0;
	201	}
48290609	202
0252208e	203	static int __perf_evsel__open(struct perf_evsel evsel, struct cpu_map cpus,
5d2cd909	204	struct thread_map *threads, bool group)
48290609	205	{
0252208e	206	int cpu, thread;
023695d9 SE	207	unsigned long flags = 0;
023695d9 SE	208	int pid = -1;
48290609	209
0252208e ACM	210	if (evsel->fd == NULL &&
0252208e ACM	211	perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0)
4eed11d5 ACM	212	return -1;
4eed11d5 ACM	213
023695d9 SE	214	if (evsel->cgrp) {
	215	flags = PERF_FLAG_PID_CGROUP;
	216	pid = evsel->cgrp->fd;
	217	}
	218
86bd5e86	219	for (cpu = 0; cpu < cpus->nr; cpu++) {
f08199d3	220	int group_fd = -1;
9d04f178	221
0252208e	222	for (thread = 0; thread < threads->nr; thread++) {
023695d9 SE	223
	224	if (!evsel->cgrp)
	225	pid = threads->map[thread];
	226
0252208e	227	FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr,
023695d9	228	pid,
f08199d3	229	cpus->map[cpu],
023695d9	230	group_fd, flags);
0252208e ACM	231	if (FD(evsel, cpu, thread) < 0)
0252208e ACM	232	goto out_close;
f08199d3 ACM	233
	234	if (group && group_fd == -1)
	235	group_fd = FD(evsel, cpu, thread);
0252208e	236	}
48290609 ACM	237	}
	238
	239	return 0;
	240
	241	out_close:
0252208e ACM	242	do {
	243	while (--thread >= 0) {
	244	close(FD(evsel, cpu, thread));
	245	FD(evsel, cpu, thread) = -1;
	246	}
	247	thread = threads->nr;
	248	} while (--cpu >= 0);
48290609 ACM	249	return -1;
	250	}
	251
0252208e ACM	252	static struct {
	253	struct cpu_map map;
	254	int cpus[1];
	255	} empty_cpu_map = {
	256	.map.nr = 1,
	257	.cpus = { -1, },
	258	};
	259
	260	static struct {
	261	struct thread_map map;
	262	int threads[1];
	263	} empty_thread_map = {
	264	.map.nr = 1,
	265	.threads = { -1, },
	266	};
	267
f08199d3	268	int perf_evsel__open(struct perf_evsel evsel, struct cpu_map cpus,
5d2cd909	269	struct thread_map *threads, bool group)
48290609	270	{
0252208e ACM	271	if (cpus == NULL) {
	272	/* Work around old compiler warnings about strict aliasing */
	273	cpus = &empty_cpu_map.map;
48290609 ACM	274	}
48290609 ACM	275
0252208e ACM	276	if (threads == NULL)
0252208e ACM	277	threads = &empty_thread_map.map;
48290609	278
5d2cd909	279	return __perf_evsel__open(evsel, cpus, threads, group);
48290609 ACM	280	}
48290609 ACM	281
f08199d3	282	int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
5d2cd909	283	struct cpu_map *cpus, bool group)
48290609	284	{
5d2cd909	285	return __perf_evsel__open(evsel, cpus, &empty_thread_map.map, group);
0252208e	286	}
48290609	287
f08199d3	288	int perf_evsel__open_per_thread(struct perf_evsel *evsel,
5d2cd909	289	struct thread_map *threads, bool group)
0252208e	290	{
5d2cd909	291	return __perf_evsel__open(evsel, &empty_cpu_map.map, threads, group);
48290609	292	}
70082dd9	293
8115d60c ACM	294	static int perf_event__parse_id_sample(const union perf_event *event, u64 type,
8115d60c ACM	295	struct perf_sample *sample)
d0dd74e8 ACM	296	{
	297	const u64 *array = event->sample.array;
	298
	299	array += ((event->header.size -
	300	sizeof(event->header)) / sizeof(u64)) - 1;
	301
	302	if (type & PERF_SAMPLE_CPU) {
	303	u32 p = (u32 )array;
	304	sample->cpu = *p;
	305	array--;
	306	}
	307
	308	if (type & PERF_SAMPLE_STREAM_ID) {
	309	sample->stream_id = *array;
	310	array--;
	311	}
	312
	313	if (type & PERF_SAMPLE_ID) {
	314	sample->id = *array;
	315	array--;
	316	}
	317
	318	if (type & PERF_SAMPLE_TIME) {
	319	sample->time = *array;
	320	array--;
	321	}
	322
	323	if (type & PERF_SAMPLE_TID) {
	324	u32 p = (u32 )array;
	325	sample->pid = p[0];
	326	sample->tid = p[1];
	327	}
	328
	329	return 0;
	330	}
	331
98e1da90 FW	332	static bool sample_overlap(const union perf_event *event,
	333	const void *offset, u64 size)
	334	{
	335	const void *base = event;
	336
	337	if (offset + size > base + event->header.size)
	338	return true;
	339
	340	return false;
	341	}
	342
8115d60c	343	int perf_event__parse_sample(const union perf_event *event, u64 type,
a2854124 FW	344	int sample_size, bool sample_id_all,
a2854124 FW	345	struct perf_sample *data)
d0dd74e8 ACM	346	{
	347	const u64 *array;
	348
	349	data->cpu = data->pid = data->tid = -1;
	350	data->stream_id = data->id = data->time = -1ULL;
	351
	352	if (event->header.type != PERF_RECORD_SAMPLE) {
	353	if (!sample_id_all)
	354	return 0;
8115d60c	355	return perf_event__parse_id_sample(event, type, data);
d0dd74e8 ACM	356	}
	357
	358	array = event->sample.array;
	359
a2854124 FW	360	if (sample_size + sizeof(event->header) > event->header.size)
	361	return -EFAULT;
	362
d0dd74e8 ACM	363	if (type & PERF_SAMPLE_IP) {
	364	data->ip = event->ip.ip;
	365	array++;
	366	}
	367
	368	if (type & PERF_SAMPLE_TID) {
	369	u32 p = (u32 )array;
	370	data->pid = p[0];
	371	data->tid = p[1];
	372	array++;
	373	}
	374
	375	if (type & PERF_SAMPLE_TIME) {
	376	data->time = *array;
	377	array++;
	378	}
	379
	380	if (type & PERF_SAMPLE_ADDR) {
	381	data->addr = *array;
	382	array++;
	383	}
	384
	385	data->id = -1ULL;
	386	if (type & PERF_SAMPLE_ID) {
	387	data->id = *array;
	388	array++;
	389	}
	390
	391	if (type & PERF_SAMPLE_STREAM_ID) {
	392	data->stream_id = *array;
	393	array++;
	394	}
	395
	396	if (type & PERF_SAMPLE_CPU) {
	397	u32 p = (u32 )array;
	398	data->cpu = *p;
	399	array++;
	400	}
	401
	402	if (type & PERF_SAMPLE_PERIOD) {
	403	data->period = *array;
	404	array++;
	405	}
	406
	407	if (type & PERF_SAMPLE_READ) {
	408	fprintf(stderr, "PERF_SAMPLE_READ is unsuported for now\n");
	409	return -1;
	410	}
	411
	412	if (type & PERF_SAMPLE_CALLCHAIN) {
98e1da90 FW	413	if (sample_overlap(event, array, sizeof(data->callchain->nr)))
	414	return -EFAULT;
	415
d0dd74e8	416	data->callchain = (struct ip_callchain *)array;
98e1da90 FW	417
	418	if (sample_overlap(event, array, data->callchain->nr))
	419	return -EFAULT;
	420
d0dd74e8 ACM	421	array += 1 + data->callchain->nr;
	422	}
	423
	424	if (type & PERF_SAMPLE_RAW) {
	425	u32 p = (u32 )array;
98e1da90 FW	426
	427	if (sample_overlap(event, array, sizeof(u32)))
	428	return -EFAULT;
	429
d0dd74e8 ACM	430	data->raw_size = *p;
d0dd74e8 ACM	431	p++;
98e1da90 FW	432
	433	if (sample_overlap(event, p, data->raw_size))
	434	return -EFAULT;
	435
d0dd74e8 ACM	436	data->raw_data = p;
	437	}
	438
	439	return 0;
	440	}