[deliverable/linux.git] / tools / perf / util / trace-event-parse.c

/*
 * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License (not later!)
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

#include "../perf.h"
#include "util.h"
#include "trace-event.h"

static int get_common_field(struct scripting_context *context,
			    int *offset, int *size, const char *type)
{
	struct pevent *pevent = context->pevent;
	struct event_format *event;
	struct format_field *field;

	if (!*size) {
		if (!pevent->events)
			return 0;

		event = pevent->events[0];
		field = pevent_find_common_field(event, type);
		if (!field)
			return 0;
		*offset = field->offset;
		*size = field->size;
	}

	return pevent_read_number(pevent, context->event_data + *offset, *size);
}

int common_lock_depth(struct scripting_context *context)
{
	static int offset;
	static int size;
	int ret;

	ret = get_common_field(context, &size, &offset,
			       "common_lock_depth");
	if (ret < 0)
		return -1;

	return ret;
}

int common_flags(struct scripting_context *context)
{
	static int offset;
	static int size;
	int ret;

	ret = get_common_field(context, &size, &offset,
			       "common_flags");
	if (ret < 0)
		return -1;

	return ret;
}

int common_pc(struct scripting_context *context)
{
	static int offset;
	static int size;
	int ret;

	ret = get_common_field(context, &size, &offset,
			       "common_preempt_count");
	if (ret < 0)
		return -1;

	return ret;
}

unsigned long long
raw_field_value(struct event_format *event, const char *name, void *data)
{
	struct format_field *field;
	unsigned long long val;

	field = pevent_find_any_field(event, name);
	if (!field)
		return 0ULL;

	pevent_read_number_field(field, data, &val);

	return val;
}

unsigned long long read_size(struct event_format *event, void *ptr, int size)
{
	return pevent_read_number(event->pevent, ptr, size);
}

void event_format__fprintf(struct event_format *event,
			   int cpu, void *data, int size, FILE *fp)
{
	struct pevent_record record;
	struct trace_seq s;

	memset(&record, 0, sizeof(record));
	record.cpu = cpu;
	record.size = size;
	record.data = data;

	trace_seq_init(&s);
	pevent_event_info(&s, event, &record);
	trace_seq_do_fprintf(&s, fp);
	trace_seq_destroy(&s);
}

void event_format__print(struct event_format *event,
			 int cpu, void *data, int size)
{
	return event_format__fprintf(event, cpu, data, size, stdout);
}

void parse_proc_kallsyms(struct pevent *pevent,
			 char *file, unsigned int size __maybe_unused)
{
	unsigned long long addr;
	char *func;
	char *line;
	char *next = NULL;
	char *addr_str;
	char *mod;
	char *fmt = NULL;

	line = strtok_r(file, "\n", &next);
	while (line) {
		mod = NULL;
		addr_str = strtok_r(line, " ", &fmt);
		addr = strtoull(addr_str, NULL, 16);
		/* skip character */
		strtok_r(NULL, " ", &fmt);
		func = strtok_r(NULL, "\t", &fmt);
		mod = strtok_r(NULL, "]", &fmt);
		/* truncate the extra '[' */
		if (mod)
			mod = mod + 1;

		pevent_register_function(pevent, func, addr, mod);

		line = strtok_r(NULL, "\n", &next);
	}
}

void parse_ftrace_printk(struct pevent *pevent,
			 char *file, unsigned int size __maybe_unused)
{
	unsigned long long addr;
	char *printk;
	char *line;
	char *next = NULL;
	char *addr_str;
	char *fmt = NULL;

	line = strtok_r(file, "\n", &next);
	while (line) {
		addr_str = strtok_r(line, ":", &fmt);
		if (!addr_str) {
			warning("printk format with empty entry");
			break;
		}
		addr = strtoull(addr_str, NULL, 16);
		/* fmt still has a space, skip it */
		printk = strdup(fmt+1);
		line = strtok_r(NULL, "\n", &next);
		pevent_register_print_string(pevent, printk, addr);
	}
}

int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size)
{
	return pevent_parse_event(pevent, buf, size, "ftrace");
}

int parse_event_file(struct pevent *pevent,
		     char *buf, unsigned long size, char *sys)
{
	return pevent_parse_event(pevent, buf, size, sys);
}

struct event_format *trace_find_next_event(struct pevent *pevent,
					   struct event_format *event)
{
	static int idx;

	if (!pevent || !pevent->events)
		return NULL;

	if (!event) {
		idx = 0;
		return pevent->events[0];
	}

	if (idx < pevent->nr_events && event == pevent->events[idx]) {
		idx++;
		if (idx == pevent->nr_events)
			return NULL;
		return pevent->events[idx];
	}

	for (idx = 1; idx < pevent->nr_events; idx++) {
		if (event == pevent->events[idx - 1])
			return pevent->events[idx];
	}
	return NULL;
}

struct flag {
	const char *name;
	unsigned long long value;
};

static const struct flag flags[] = {
	{ "HI_SOFTIRQ", 0 },
	{ "TIMER_SOFTIRQ", 1 },
	{ "NET_TX_SOFTIRQ", 2 },
	{ "NET_RX_SOFTIRQ", 3 },
	{ "BLOCK_SOFTIRQ", 4 },
	{ "BLOCK_IOPOLL_SOFTIRQ", 5 },
	{ "TASKLET_SOFTIRQ", 6 },
	{ "SCHED_SOFTIRQ", 7 },
	{ "HRTIMER_SOFTIRQ", 8 },
	{ "RCU_SOFTIRQ", 9 },

	{ "HRTIMER_NORESTART", 0 },
	{ "HRTIMER_RESTART", 1 },
};

unsigned long long eval_flag(const char *flag)
{
	int i;

	/*
	 * Some flags in the format files do not get converted.
	 * If the flag is not numeric, see if it is something that
	 * we already know about.
	 */
	if (isdigit(flag[0]))
		return strtoull(flag, NULL, 0);

	for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
		if (strcmp(flags[i].name, flag) == 0)
			return flags[i].value;

	return 0;
}
Commit	Line	Data
aaf045f7 SR	1	/*
	2	* Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
	3	*
	4	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; version 2 of the License (not later!)
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	18	*
	19	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	20	*/
	21	#include <stdio.h>
	22	#include <stdlib.h>
	23	#include <string.h>
	24	#include <ctype.h>
	25	#include <errno.h>
	26
1ef2ed10	27	#include "../perf.h"
ea4010d1 SR	28	#include "util.h"
	29	#include "trace-event.h"
	30
aaf045f7 SR	31	static int get_common_field(struct scripting_context *context,
aaf045f7 SR	32	int offset, int size, const char *type)
7397d80d	33	{
da378962	34	struct pevent *pevent = context->pevent;
aaf045f7 SR	35	struct event_format *event;
	36	struct format_field *field;
	37
	38	if (!*size) {
	39	if (!pevent->events)
	40	return 0;
	41
	42	event = pevent->events[0];
	43	field = pevent_find_common_field(event, type);
	44	if (!field)
	45	return 0;
	46	*offset = field->offset;
	47	*size = field->size;
	48	}
	49
	50	return pevent_read_number(pevent, context->event_data + offset, size);
7397d80d TZ	51	}
	52
	53	int common_lock_depth(struct scripting_context *context)
	54	{
aaf045f7 SR	55	static int offset;
	56	static int size;
	57	int ret;
	58
	59	ret = get_common_field(context, &size, &offset,
	60	"common_lock_depth");
	61	if (ret < 0)
	62	return -1;
	63
	64	return ret;
	65	}
	66
	67	int common_flags(struct scripting_context *context)
	68	{
	69	static int offset;
	70	static int size;
	71	int ret;
	72
	73	ret = get_common_field(context, &size, &offset,
	74	"common_flags");
	75	if (ret < 0)
	76	return -1;
	77
	78	return ret;
	79	}
	80
	81	int common_pc(struct scripting_context *context)
	82	{
	83	static int offset;
	84	static int size;
	85	int ret;
	86
	87	ret = get_common_field(context, &size, &offset,
	88	"common_preempt_count");
	89	if (ret < 0)
	90	return -1;
	91
	92	return ret;
	93	}
	94
	95	unsigned long long
	96	raw_field_value(struct event_format event, const char name, void *data)
	97	{
	98	struct format_field *field;
	99	unsigned long long val;
	100
	101	field = pevent_find_any_field(event, name);
	102	if (!field)
	103	return 0ULL;
	104
	105	pevent_read_number_field(field, data, &val);
	106
	107	return val;
	108	}
	109
97822433	110	unsigned long long read_size(struct event_format event, void ptr, int size)
aaf045f7	111	{
97822433	112	return pevent_read_number(event->pevent, ptr, size);
aaf045f7 SR	113	}
aaf045f7 SR	114
aa1aac17 ACM	115	void event_format__fprintf(struct event_format *event,
aa1aac17 ACM	116	int cpu, void data, int size, FILE fp)
aaf045f7	117	{
1c698186	118	struct pevent_record record;
aaf045f7	119	struct trace_seq s;
aaf045f7 SR	120
	121	memset(&record, 0, sizeof(record));
	122	record.cpu = cpu;
	123	record.size = size;
	124	record.data = data;
	125
	126	trace_seq_init(&s);
76a8349d	127	pevent_event_info(&s, event, &record);
aa1aac17	128	trace_seq_do_fprintf(&s, fp);
b58f608e	129	trace_seq_destroy(&s);
aaf045f7 SR	130	}
aaf045f7 SR	131
aa1aac17 ACM	132	void event_format__print(struct event_format *event,
	133	int cpu, void *data, int size)
	134	{
	135	return event_format__fprintf(event, cpu, data, size, stdout);
	136	}
	137
da378962	138	void parse_proc_kallsyms(struct pevent *pevent,
1d037ca1	139	char *file, unsigned int size __maybe_unused)
aaf045f7 SR	140	{
	141	unsigned long long addr;
	142	char *func;
	143	char *line;
	144	char *next = NULL;
	145	char *addr_str;
	146	char *mod;
0f965429	147	char *fmt = NULL;
aaf045f7 SR	148
	149	line = strtok_r(file, "\n", &next);
	150	while (line) {
	151	mod = NULL;
bcbd0040	152	addr_str = strtok_r(line, " ", &fmt);
aaf045f7	153	addr = strtoull(addr_str, NULL, 16);
bcbd0040 IT	154	/* skip character */
	155	strtok_r(NULL, " ", &fmt);
	156	func = strtok_r(NULL, "\t", &fmt);
	157	mod = strtok_r(NULL, "]", &fmt);
	158	/* truncate the extra '[' */
aaf045f7	159	if (mod)
bcbd0040	160	mod = mod + 1;
aaf045f7 SR	161
aaf045f7 SR	162	pevent_register_function(pevent, func, addr, mod);
aaf045f7 SR	163
	164	line = strtok_r(NULL, "\n", &next);
	165	}
	166	}
	167
da378962	168	void parse_ftrace_printk(struct pevent *pevent,
1d037ca1	169	char *file, unsigned int size __maybe_unused)
aaf045f7 SR	170	{
	171	unsigned long long addr;
	172	char *printk;
	173	char *line;
	174	char *next = NULL;
	175	char *addr_str;
5bcaaca3	176	char *fmt = NULL;
aaf045f7 SR	177
	178	line = strtok_r(file, "\n", &next);
	179	while (line) {
	180	addr_str = strtok_r(line, ":", &fmt);
	181	if (!addr_str) {
	182	warning("printk format with empty entry");
	183	break;
	184	}
	185	addr = strtoull(addr_str, NULL, 16);
	186	/* fmt still has a space, skip it */
	187	printk = strdup(fmt+1);
	188	line = strtok_r(NULL, "\n", &next);
	189	pevent_register_print_string(pevent, printk, addr);
	190	}
	191	}
	192
da378962	193	int parse_ftrace_file(struct pevent pevent, char buf, unsigned long size)
aaf045f7 SR	194	{
	195	return pevent_parse_event(pevent, buf, size, "ftrace");
	196	}
	197
da378962 ACM	198	int parse_event_file(struct pevent *pevent,
da378962 ACM	199	char buf, unsigned long size, char sys)
aaf045f7 SR	200	{
	201	return pevent_parse_event(pevent, buf, size, sys);
	202	}
	203
da378962 ACM	204	struct event_format trace_find_next_event(struct pevent pevent,
da378962 ACM	205	struct event_format *event)
aaf045f7 SR	206	{
	207	static int idx;
	208
d0d39138	209	if (!pevent \|\| !pevent->events)
aaf045f7 SR	210	return NULL;
	211
	212	if (!event) {
	213	idx = 0;
	214	return pevent->events[0];
	215	}
	216
	217	if (idx < pevent->nr_events && event == pevent->events[idx]) {
	218	idx++;
	219	if (idx == pevent->nr_events)
	220	return NULL;
	221	return pevent->events[idx];
	222	}
	223
	224	for (idx = 1; idx < pevent->nr_events; idx++) {
	225	if (event == pevent->events[idx - 1])
	226	return pevent->events[idx];
	227	}
	228	return NULL;
	229	}
	230
	231	struct flag {
	232	const char *name;
	233	unsigned long long value;
	234	};
	235
	236	static const struct flag flags[] = {
	237	{ "HI_SOFTIRQ", 0 },
	238	{ "TIMER_SOFTIRQ", 1 },
	239	{ "NET_TX_SOFTIRQ", 2 },
	240	{ "NET_RX_SOFTIRQ", 3 },
	241	{ "BLOCK_SOFTIRQ", 4 },
	242	{ "BLOCK_IOPOLL_SOFTIRQ", 5 },
	243	{ "TASKLET_SOFTIRQ", 6 },
	244	{ "SCHED_SOFTIRQ", 7 },
	245	{ "HRTIMER_SOFTIRQ", 8 },
	246	{ "RCU_SOFTIRQ", 9 },
	247
	248	{ "HRTIMER_NORESTART", 0 },
	249	{ "HRTIMER_RESTART", 1 },
	250	};
	251
	252	unsigned long long eval_flag(const char *flag)
	253	{
	254	int i;
	255
	256	/*
	257	* Some flags in the format files do not get converted.
	258	* If the flag is not numeric, see if it is something that
	259	* we already know about.
	260	*/
	261	if (isdigit(flag[0]))
	262	return strtoull(flag, NULL, 0);
	263
	264	for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
	265	if (strcmp(flags[i].name, flag) == 0)
	266	return flags[i].value;
	267
	268	return 0;
7397d80d	269	}