[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__print(struct event_format *event,
			 int cpu, void *data, int size)
{
	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_printf(&s);
	trace_seq_destroy(&s);
}

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;

	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
fcf65bf1 ACM	115	void event_format__print(struct event_format *event,
fcf65bf1 ACM	116	int cpu, void *data, int size)
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);
aaf045f7	128	trace_seq_do_printf(&s);
b58f608e	129	trace_seq_destroy(&s);
aaf045f7 SR	130	}
aaf045f7 SR	131
da378962	132	void parse_proc_kallsyms(struct pevent *pevent,
1d037ca1	133	char *file, unsigned int size __maybe_unused)
aaf045f7 SR	134	{
	135	unsigned long long addr;
	136	char *func;
	137	char *line;
	138	char *next = NULL;
	139	char *addr_str;
	140	char *mod;
0f965429	141	char *fmt = NULL;
aaf045f7 SR	142
	143	line = strtok_r(file, "\n", &next);
	144	while (line) {
	145	mod = NULL;
bcbd0040	146	addr_str = strtok_r(line, " ", &fmt);
aaf045f7	147	addr = strtoull(addr_str, NULL, 16);
bcbd0040 IT	148	/* skip character */
	149	strtok_r(NULL, " ", &fmt);
	150	func = strtok_r(NULL, "\t", &fmt);
	151	mod = strtok_r(NULL, "]", &fmt);
	152	/* truncate the extra '[' */
aaf045f7	153	if (mod)
bcbd0040	154	mod = mod + 1;
aaf045f7 SR	155
aaf045f7 SR	156	pevent_register_function(pevent, func, addr, mod);
aaf045f7 SR	157
	158	line = strtok_r(NULL, "\n", &next);
	159	}
	160	}
	161
da378962	162	void parse_ftrace_printk(struct pevent *pevent,
1d037ca1	163	char *file, unsigned int size __maybe_unused)
aaf045f7 SR	164	{
	165	unsigned long long addr;
	166	char *printk;
	167	char *line;
	168	char *next = NULL;
	169	char *addr_str;
	170	char *fmt;
	171
	172	line = strtok_r(file, "\n", &next);
	173	while (line) {
	174	addr_str = strtok_r(line, ":", &fmt);
	175	if (!addr_str) {
	176	warning("printk format with empty entry");
	177	break;
	178	}
	179	addr = strtoull(addr_str, NULL, 16);
	180	/* fmt still has a space, skip it */
	181	printk = strdup(fmt+1);
	182	line = strtok_r(NULL, "\n", &next);
	183	pevent_register_print_string(pevent, printk, addr);
	184	}
	185	}
	186
da378962	187	int parse_ftrace_file(struct pevent pevent, char buf, unsigned long size)
aaf045f7 SR	188	{
	189	return pevent_parse_event(pevent, buf, size, "ftrace");
	190	}
	191
da378962 ACM	192	int parse_event_file(struct pevent *pevent,
da378962 ACM	193	char buf, unsigned long size, char sys)
aaf045f7 SR	194	{
	195	return pevent_parse_event(pevent, buf, size, sys);
	196	}
	197
da378962 ACM	198	struct event_format trace_find_next_event(struct pevent pevent,
da378962 ACM	199	struct event_format *event)
aaf045f7 SR	200	{
	201	static int idx;
	202
d0d39138	203	if (!pevent \|\| !pevent->events)
aaf045f7 SR	204	return NULL;
	205
	206	if (!event) {
	207	idx = 0;
	208	return pevent->events[0];
	209	}
	210
	211	if (idx < pevent->nr_events && event == pevent->events[idx]) {
	212	idx++;
	213	if (idx == pevent->nr_events)
	214	return NULL;
	215	return pevent->events[idx];
	216	}
	217
	218	for (idx = 1; idx < pevent->nr_events; idx++) {
	219	if (event == pevent->events[idx - 1])
	220	return pevent->events[idx];
	221	}
	222	return NULL;
	223	}
	224
	225	struct flag {
	226	const char *name;
	227	unsigned long long value;
	228	};
	229
	230	static const struct flag flags[] = {
	231	{ "HI_SOFTIRQ", 0 },
	232	{ "TIMER_SOFTIRQ", 1 },
	233	{ "NET_TX_SOFTIRQ", 2 },
	234	{ "NET_RX_SOFTIRQ", 3 },
	235	{ "BLOCK_SOFTIRQ", 4 },
	236	{ "BLOCK_IOPOLL_SOFTIRQ", 5 },
	237	{ "TASKLET_SOFTIRQ", 6 },
	238	{ "SCHED_SOFTIRQ", 7 },
	239	{ "HRTIMER_SOFTIRQ", 8 },
	240	{ "RCU_SOFTIRQ", 9 },
	241
	242	{ "HRTIMER_NORESTART", 0 },
	243	{ "HRTIMER_RESTART", 1 },
	244	};
	245
	246	unsigned long long eval_flag(const char *flag)
	247	{
	248	int i;
	249
	250	/*
	251	* Some flags in the format files do not get converted.
	252	* If the flag is not numeric, see if it is something that
	253	* we already know about.
	254	*/
	255	if (isdigit(flag[0]))
	256	return strtoull(flag, NULL, 0);
	257
	258	for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
	259	if (strcmp(flags[i].name, flag) == 0)
	260	return flags[i].value;
	261
	262	return 0;
7397d80d	263	}