tools/perf/util/trace-event-parse.c - kernel/msm-4.19 - Gitiles

 /*
  * 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"

 int header_page_size_size;
 int header_page_ts_size;
 int header_page_data_offset;

 bool latency_format;

 struct pevent *read_trace_init(int file_bigendian, int host_bigendian)
 {
 	struct pevent *pevent = pevent_alloc();

 	if (pevent != NULL) {
 		pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
 		pevent_set_file_bigendian(pevent, file_bigendian);
 		pevent_set_host_bigendian(pevent, host_bigendian);
 	}

 	return pevent;
 }

 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;
 }

 void *raw_field_ptr(struct event_format *event, const char *name, void *data)
 {
 	struct format_field *field;

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

 	if (field->flags & FIELD_IS_DYNAMIC) {
 		int offset;

 		offset = *(int *)(data + field->offset);
 		offset &= 0xffff;

 		return data + offset;
 	}

 	return data + field->offset;
 }

 int trace_parse_common_type(struct pevent *pevent, void *data)
 {
 	struct pevent_record record;

 	record.data = data;
 	return pevent_data_type(pevent, &record);
 }

 int trace_parse_common_pid(struct pevent *pevent, void *data)
 {
 	struct pevent_record record;

 	record.data = data;
 	return pevent_data_pid(pevent, &record);
 }

 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);
 }

 void print_trace_event(struct pevent *pevent, int cpu, void *data, int size)
 {
 	int type = trace_parse_common_type(pevent, data);
 	struct event_format *event = pevent_find_event(pevent, type);

 	if (!event) {
 		warning("ug! no event found for type %d", type);
 		return;
 	}

 	event_format__print(event, cpu, data, size);
 }

 void print_event(struct pevent *pevent, int cpu, void *data, int size,
 		 unsigned long long nsecs, char *comm)
 {
 	struct pevent_record record;
 	struct trace_seq s;
 	int pid;

 	pevent->latency_format = latency_format;

 	record.ts = nsecs;
 	record.cpu = cpu;
 	record.size = size;
 	record.data = data;
 	pid = pevent_data_pid(pevent, &record);

 	if (!pevent_pid_is_registered(pevent, pid))
 		pevent_register_comm(pevent, comm, pid);

 	trace_seq_init(&s);
 	pevent_print_event(pevent, &s, &record);
 	trace_seq_do_printf(&s);
 	printf("\n");
 }

 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;

 	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;
 }
	/*
	* 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"

	int header_page_size_size;
	int header_page_ts_size;
	int header_page_data_offset;

	bool latency_format;

	struct pevent *read_trace_init(int file_bigendian, int host_bigendian)
	{
	struct pevent *pevent = pevent_alloc();

	if (pevent != NULL) {
	pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
	pevent_set_file_bigendian(pevent, file_bigendian);
	pevent_set_host_bigendian(pevent, host_bigendian);
	}

	return pevent;
	}

	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;
	}

	void raw_field_ptr(struct event_format event, const char name, void data)
	{
	struct format_field *field;

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

	if (field->flags & FIELD_IS_DYNAMIC) {
	int offset;

	offset = (int )(data + field->offset);
	offset &= 0xffff;

	return data + offset;
	}

	return data + field->offset;
	}

	int trace_parse_common_type(struct pevent pevent, void data)
	{
	struct pevent_record record;

	record.data = data;
	return pevent_data_type(pevent, &record);
	}

	int trace_parse_common_pid(struct pevent pevent, void data)
	{
	struct pevent_record record;

	record.data = data;
	return pevent_data_pid(pevent, &record);
	}

	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);
	}

	void print_trace_event(struct pevent pevent, int cpu, void data, int size)
	{
	int type = trace_parse_common_type(pevent, data);
	struct event_format *event = pevent_find_event(pevent, type);

	if (!event) {
	warning("ug! no event found for type %d", type);
	return;
	}

	event_format__print(event, cpu, data, size);
	}

	void print_event(struct pevent pevent, int cpu, void data, int size,
	unsigned long long nsecs, char *comm)
	{
	struct pevent_record record;
	struct trace_seq s;
	int pid;

	pevent->latency_format = latency_format;

	record.ts = nsecs;
	record.cpu = cpu;
	record.size = size;
	record.data = data;
	pid = pevent_data_pid(pevent, &record);

	if (!pevent_pid_is_registered(pevent, pid))
	pevent_register_comm(pevent, comm, pid);

	trace_seq_init(&s);
	pevent_print_event(pevent, &s, &record);
	trace_seq_do_printf(&s);
	printf("\n");
	}

	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;

	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;
	}