[GitHub/mt8127/android_kernel_alcatel_ttab.git] / tools / perf / builtin-inject.c

/*
 * builtin-inject.c
 *
 * Builtin inject command: Examine the live mode (stdin) event stream
 * and repipe it to stdout while optionally injecting additional
 * events into it.
 */
#include "builtin.h"

#include "perf.h"
#include "util/session.h"
#include "util/tool.h"
#include "util/debug.h"

#include "util/parse-options.h"

struct perf_inject {
	struct perf_tool tool;
	bool		 build_ids;
};

static int perf_event__repipe_synth(struct perf_tool *tool __maybe_unused,
				    union perf_event *event,
				    struct machine *machine __maybe_unused)
{
	uint32_t size;
	void *buf = event;

	size = event->header.size;

	while (size) {
		int ret = write(STDOUT_FILENO, buf, size);
		if (ret < 0)
			return -errno;

		size -= ret;
		buf += ret;
	}

	return 0;
}

static int perf_event__repipe_op2_synth(struct perf_tool *tool,
					union perf_event *event,
					struct perf_session *session
					__maybe_unused)
{
	return perf_event__repipe_synth(tool, event, NULL);
}

static int perf_event__repipe_event_type_synth(struct perf_tool *tool,
					       union perf_event *event)
{
	return perf_event__repipe_synth(tool, event, NULL);
}

static int perf_event__repipe_tracing_data_synth(union perf_event *event,
						 struct perf_session *session
						 __maybe_unused)
{
	return perf_event__repipe_synth(NULL, event, NULL);
}

static int perf_event__repipe_attr(union perf_event *event,
				   struct perf_evlist **pevlist __maybe_unused)
{
	int ret;
	ret = perf_event__process_attr(event, pevlist);
	if (ret)
		return ret;

	return perf_event__repipe_synth(NULL, event, NULL);
}

static int perf_event__repipe(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample __maybe_unused,
			      struct machine *machine)
{
	return perf_event__repipe_synth(tool, event, machine);
}

static int perf_event__repipe_sample(struct perf_tool *tool,
				     union perf_event *event,
			      struct perf_sample *sample __maybe_unused,
			      struct perf_evsel *evsel __maybe_unused,
			      struct machine *machine)
{
	return perf_event__repipe_synth(tool, event, machine);
}

static int perf_event__repipe_mmap(struct perf_tool *tool,
				   union perf_event *event,
				   struct perf_sample *sample,
				   struct machine *machine)
{
	int err;

	err = perf_event__process_mmap(tool, event, sample, machine);
	perf_event__repipe(tool, event, sample, machine);

	return err;
}

static int perf_event__repipe_task(struct perf_tool *tool,
				   union perf_event *event,
				   struct perf_sample *sample,
				   struct machine *machine)
{
	int err;

	err = perf_event__process_task(tool, event, sample, machine);
	perf_event__repipe(tool, event, sample, machine);

	return err;
}

static int perf_event__repipe_tracing_data(union perf_event *event,
					   struct perf_session *session)
{
	int err;

	perf_event__repipe_synth(NULL, event, NULL);
	err = perf_event__process_tracing_data(event, session);

	return err;
}

static int dso__read_build_id(struct dso *self)
{
	if (self->has_build_id)
		return 0;

	if (filename__read_build_id(self->long_name, self->build_id,
				    sizeof(self->build_id)) > 0) {
		self->has_build_id = true;
		return 0;
	}

	return -1;
}

static int dso__inject_build_id(struct dso *self, struct perf_tool *tool,
				struct machine *machine)
{
	u16 misc = PERF_RECORD_MISC_USER;
	int err;

	if (dso__read_build_id(self) < 0) {
		pr_debug("no build_id found for %s\n", self->long_name);
		return -1;
	}

	if (self->kernel)
		misc = PERF_RECORD_MISC_KERNEL;

	err = perf_event__synthesize_build_id(tool, self, misc, perf_event__repipe,
					      machine);
	if (err) {
		pr_err("Can't synthesize build_id event for %s\n", self->long_name);
		return -1;
	}

	return 0;
}

static int perf_event__inject_buildid(struct perf_tool *tool,
				      union perf_event *event,
				      struct perf_sample *sample,
				      struct perf_evsel *evsel __maybe_unused,
				      struct machine *machine)
{
	struct addr_location al;
	struct thread *thread;
	u8 cpumode;

	cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;

	thread = machine__findnew_thread(machine, event->ip.pid);
	if (thread == NULL) {
		pr_err("problem processing %d event, skipping it.\n",
		       event->header.type);
		goto repipe;
	}

	thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
			      event->ip.ip, &al);

	if (al.map != NULL) {
		if (!al.map->dso->hit) {
			al.map->dso->hit = 1;
			if (map__load(al.map, NULL) >= 0) {
				dso__inject_build_id(al.map->dso, tool, machine);
				/*
				 * If this fails, too bad, let the other side
				 * account this as unresolved.
				 */
			} else {
#ifdef LIBELF_SUPPORT
				pr_warning("no symbols found in %s, maybe "
					   "install a debug package?\n",
					   al.map->dso->long_name);
#endif
			}
		}
	}

repipe:
	perf_event__repipe(tool, event, sample, machine);
	return 0;
}

extern volatile int session_done;

static void sig_handler(int sig __maybe_unused)
{
	session_done = 1;
}

static int __cmd_inject(struct perf_inject *inject)
{
	struct perf_session *session;
	int ret = -EINVAL;

	signal(SIGINT, sig_handler);

	if (inject->build_ids) {
		inject->tool.sample	  = perf_event__inject_buildid;
		inject->tool.mmap	  = perf_event__repipe_mmap;
		inject->tool.fork	  = perf_event__repipe_task;
		inject->tool.tracing_data = perf_event__repipe_tracing_data;
	}

	session = perf_session__new("-", O_RDONLY, false, true, &inject->tool);
	if (session == NULL)
		return -ENOMEM;

	ret = perf_session__process_events(session, &inject->tool);

	perf_session__delete(session);

	return ret;
}

int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
{
	struct perf_inject inject = {
		.tool = {
			.sample		= perf_event__repipe_sample,
			.mmap		= perf_event__repipe,
			.comm		= perf_event__repipe,
			.fork		= perf_event__repipe,
			.exit		= perf_event__repipe,
			.lost		= perf_event__repipe,
			.read		= perf_event__repipe_sample,
			.throttle	= perf_event__repipe,
			.unthrottle	= perf_event__repipe,
			.attr		= perf_event__repipe_attr,
			.event_type	= perf_event__repipe_event_type_synth,
			.tracing_data	= perf_event__repipe_tracing_data_synth,
			.build_id	= perf_event__repipe_op2_synth,
		},
	};
	const struct option options[] = {
		OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
			    "Inject build-ids into the output stream"),
		OPT_INCR('v', "verbose", &verbose,
			 "be more verbose (show build ids, etc)"),
		OPT_END()
	};
	const char * const inject_usage[] = {
		"perf inject [<options>]",
		NULL
	};

	argc = parse_options(argc, argv, options, inject_usage, 0);

	/*
	 * Any (unrecognized) arguments left?
	 */
	if (argc)
		usage_with_options(inject_usage, options);

	if (symbol__init() < 0)
		return -1;

	return __cmd_inject(&inject);
}
Commit	Line	Data
	1	/*
	2	* builtin-inject.c
	3	*
	4	* Builtin inject command: Examine the live mode (stdin) event stream
	5	* and repipe it to stdout while optionally injecting additional
	6	* events into it.
	7	*/
	8	#include "builtin.h"
	9
	10	#include "perf.h"
	11	#include "util/session.h"
	12	#include "util/tool.h"
	13	#include "util/debug.h"
	14
	15	#include "util/parse-options.h"
	16
	17	struct perf_inject {
	18	struct perf_tool tool;
	19	bool build_ids;
	20	};
	21
	22	static int perf_event__repipe_synth(struct perf_tool *tool __maybe_unused,
	23	union perf_event *event,
	24	struct machine *machine __maybe_unused)
	25	{
	26	uint32_t size;
	27	void *buf = event;
	28
	29	size = event->header.size;
	30
	31	while (size) {
	32	int ret = write(STDOUT_FILENO, buf, size);
	33	if (ret < 0)
	34	return -errno;
	35
	36	size -= ret;
	37	buf += ret;
	38	}
	39
	40	return 0;
	41	}
	42
	43	static int perf_event__repipe_op2_synth(struct perf_tool *tool,
	44	union perf_event *event,
	45	struct perf_session *session
	46	__maybe_unused)
	47	{
	48	return perf_event__repipe_synth(tool, event, NULL);
	49	}
	50
	51	static int perf_event__repipe_event_type_synth(struct perf_tool *tool,
	52	union perf_event *event)
	53	{
	54	return perf_event__repipe_synth(tool, event, NULL);
	55	}
	56
	57	static int perf_event__repipe_tracing_data_synth(union perf_event *event,
	58	struct perf_session *session
	59	__maybe_unused)
	60	{
	61	return perf_event__repipe_synth(NULL, event, NULL);
	62	}
	63
	64	static int perf_event__repipe_attr(union perf_event *event,
	65	struct perf_evlist **pevlist __maybe_unused)
	66	{
	67	int ret;
	68	ret = perf_event__process_attr(event, pevlist);
	69	if (ret)
	70	return ret;
	71
	72	return perf_event__repipe_synth(NULL, event, NULL);
	73	}
	74
	75	static int perf_event__repipe(struct perf_tool *tool,
	76	union perf_event *event,
	77	struct perf_sample *sample __maybe_unused,
	78	struct machine *machine)
	79	{
	80	return perf_event__repipe_synth(tool, event, machine);
	81	}
	82
	83	static int perf_event__repipe_sample(struct perf_tool *tool,
	84	union perf_event *event,
	85	struct perf_sample *sample __maybe_unused,
	86	struct perf_evsel *evsel __maybe_unused,
	87	struct machine *machine)
	88	{
	89	return perf_event__repipe_synth(tool, event, machine);
	90	}
	91
	92	static int perf_event__repipe_mmap(struct perf_tool *tool,
	93	union perf_event *event,
	94	struct perf_sample *sample,
	95	struct machine *machine)
	96	{
	97	int err;
	98
	99	err = perf_event__process_mmap(tool, event, sample, machine);
	100	perf_event__repipe(tool, event, sample, machine);
	101
	102	return err;
	103	}
	104
	105	static int perf_event__repipe_task(struct perf_tool *tool,
	106	union perf_event *event,
	107	struct perf_sample *sample,
	108	struct machine *machine)
	109	{
	110	int err;
	111
	112	err = perf_event__process_task(tool, event, sample, machine);
	113	perf_event__repipe(tool, event, sample, machine);
	114
	115	return err;
	116	}
	117
	118	static int perf_event__repipe_tracing_data(union perf_event *event,
	119	struct perf_session *session)
	120	{
	121	int err;
	122
	123	perf_event__repipe_synth(NULL, event, NULL);
	124	err = perf_event__process_tracing_data(event, session);
	125
	126	return err;
	127	}
	128
	129	static int dso__read_build_id(struct dso *self)
	130	{
	131	if (self->has_build_id)
	132	return 0;
	133
	134	if (filename__read_build_id(self->long_name, self->build_id,
	135	sizeof(self->build_id)) > 0) {
	136	self->has_build_id = true;
	137	return 0;
	138	}
	139
	140	return -1;
	141	}
	142
	143	static int dso__inject_build_id(struct dso self, struct perf_tool tool,
	144	struct machine *machine)
	145	{
	146	u16 misc = PERF_RECORD_MISC_USER;
	147	int err;
	148
	149	if (dso__read_build_id(self) < 0) {
	150	pr_debug("no build_id found for %s\n", self->long_name);
	151	return -1;
	152	}
	153
	154	if (self->kernel)
	155	misc = PERF_RECORD_MISC_KERNEL;
	156
	157	err = perf_event__synthesize_build_id(tool, self, misc, perf_event__repipe,
	158	machine);
	159	if (err) {
	160	pr_err("Can't synthesize build_id event for %s\n", self->long_name);
	161	return -1;
	162	}
	163
	164	return 0;
	165	}
	166
	167	static int perf_event__inject_buildid(struct perf_tool *tool,
	168	union perf_event *event,
	169	struct perf_sample *sample,
	170	struct perf_evsel *evsel __maybe_unused,
	171	struct machine *machine)
	172	{
	173	struct addr_location al;
	174	struct thread *thread;
	175	u8 cpumode;
	176
	177	cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
	178
	179	thread = machine__findnew_thread(machine, event->ip.pid);
	180	if (thread == NULL) {
	181	pr_err("problem processing %d event, skipping it.\n",
	182	event->header.type);
	183	goto repipe;
	184	}
	185
	186	thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
	187	event->ip.ip, &al);
	188
	189	if (al.map != NULL) {
	190	if (!al.map->dso->hit) {
	191	al.map->dso->hit = 1;
	192	if (map__load(al.map, NULL) >= 0) {
	193	dso__inject_build_id(al.map->dso, tool, machine);
	194	/*
	195	* If this fails, too bad, let the other side
	196	* account this as unresolved.
	197	*/
	198	} else {
	199	#ifdef LIBELF_SUPPORT
	200	pr_warning("no symbols found in %s, maybe "
	201	"install a debug package?\n",
	202	al.map->dso->long_name);
	203	#endif
	204	}
	205	}
	206	}
	207
	208	repipe:
	209	perf_event__repipe(tool, event, sample, machine);
	210	return 0;
	211	}
	212
	213	extern volatile int session_done;
	214
	215	static void sig_handler(int sig __maybe_unused)
	216	{
	217	session_done = 1;
	218	}
	219
	220	static int __cmd_inject(struct perf_inject *inject)
	221	{
	222	struct perf_session *session;
	223	int ret = -EINVAL;
	224
	225	signal(SIGINT, sig_handler);
	226
	227	if (inject->build_ids) {
	228	inject->tool.sample = perf_event__inject_buildid;
	229	inject->tool.mmap = perf_event__repipe_mmap;
	230	inject->tool.fork = perf_event__repipe_task;
	231	inject->tool.tracing_data = perf_event__repipe_tracing_data;
	232	}
	233
	234	session = perf_session__new("-", O_RDONLY, false, true, &inject->tool);
	235	if (session == NULL)
	236	return -ENOMEM;
	237
	238	ret = perf_session__process_events(session, &inject->tool);
	239
	240	perf_session__delete(session);
	241
	242	return ret;
	243	}
	244
	245	int cmd_inject(int argc, const char *argv, const char prefix __maybe_unused)
	246	{
	247	struct perf_inject inject = {
	248	.tool = {
	249	.sample = perf_event__repipe_sample,
	250	.mmap = perf_event__repipe,
	251	.comm = perf_event__repipe,
	252	.fork = perf_event__repipe,
	253	.exit = perf_event__repipe,
	254	.lost = perf_event__repipe,
	255	.read = perf_event__repipe_sample,
	256	.throttle = perf_event__repipe,
	257	.unthrottle = perf_event__repipe,
	258	.attr = perf_event__repipe_attr,
	259	.event_type = perf_event__repipe_event_type_synth,
	260	.tracing_data = perf_event__repipe_tracing_data_synth,
	261	.build_id = perf_event__repipe_op2_synth,
	262	},
	263	};
	264	const struct option options[] = {
	265	OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
	266	"Inject build-ids into the output stream"),
	267	OPT_INCR('v', "verbose", &verbose,
	268	"be more verbose (show build ids, etc)"),
	269	OPT_END()
	270	};
	271	const char * const inject_usage[] = {
	272	"perf inject [<options>]",
	273	NULL
	274	};
	275
	276	argc = parse_options(argc, argv, options, inject_usage, 0);
	277
	278	/*
	279	* Any (unrecognized) arguments left?
	280	*/
	281	if (argc)
	282	usage_with_options(inject_usage, options);
	283
	284	if (symbol__init() < 0)
	285	return -1;
	286
	287	return __cmd_inject(&inject);
	288	}