2 * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!)
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.
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
19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
29 #include "trace-event.h"
31 int header_page_size_size;
32 int header_page_ts_size;
33 int header_page_data_offset;
37 struct pevent *read_trace_init(int file_bigendian, int host_bigendian)
39 struct pevent *pevent = pevent_alloc();
42 pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
43 pevent_set_file_bigendian(pevent, file_bigendian);
44 pevent_set_host_bigendian(pevent, host_bigendian);
50 static int get_common_field(struct scripting_context *context,
51 int *offset, int *size, const char *type)
53 struct pevent *pevent = context->pevent;
54 struct event_format *event;
55 struct format_field *field;
61 event = pevent->events[0];
62 field = pevent_find_common_field(event, type);
65 *offset = field->offset;
69 return pevent_read_number(pevent, context->event_data + *offset, *size);
72 int common_lock_depth(struct scripting_context *context)
78 ret = get_common_field(context, &size, &offset,
86 int common_flags(struct scripting_context *context)
92 ret = get_common_field(context, &size, &offset,
100 int common_pc(struct scripting_context *context)
106 ret = get_common_field(context, &size, &offset,
107 "common_preempt_count");
115 raw_field_value(struct event_format *event, const char *name, void *data)
117 struct format_field *field;
118 unsigned long long val;
120 field = pevent_find_any_field(event, name);
124 pevent_read_number_field(field, data, &val);
129 void *raw_field_ptr(struct event_format *event, const char *name, void *data)
131 struct format_field *field;
133 field = pevent_find_any_field(event, name);
137 if (field->flags & FIELD_IS_DYNAMIC) {
140 offset = *(int *)(data + field->offset);
143 return data + offset;
146 return data + field->offset;
149 int trace_parse_common_type(struct pevent *pevent, void *data)
151 struct pevent_record record;
154 return pevent_data_type(pevent, &record);
157 int trace_parse_common_pid(struct pevent *pevent, void *data)
159 struct pevent_record record;
162 return pevent_data_pid(pevent, &record);
165 unsigned long long read_size(struct event_format *event, void *ptr, int size)
167 return pevent_read_number(event->pevent, ptr, size);
170 void event_format__print(struct event_format *event,
171 int cpu, void *data, int size)
173 struct pevent_record record;
176 memset(&record, 0, sizeof(record));
182 pevent_event_info(&s, event, &record);
183 trace_seq_do_printf(&s);
186 void print_trace_event(struct pevent *pevent, int cpu, void *data, int size)
188 int type = trace_parse_common_type(pevent, data);
189 struct event_format *event = pevent_find_event(pevent, type);
192 warning("ug! no event found for type %d", type);
196 event_format__print(event, cpu, data, size);
199 void print_event(struct pevent *pevent, int cpu, void *data, int size,
200 unsigned long long nsecs, char *comm)
202 struct pevent_record record;
206 pevent->latency_format = latency_format;
212 pid = pevent_data_pid(pevent, &record);
214 if (!pevent_pid_is_registered(pevent, pid))
215 pevent_register_comm(pevent, comm, pid);
218 pevent_print_event(pevent, &s, &record);
219 trace_seq_do_printf(&s);
223 void parse_proc_kallsyms(struct pevent *pevent,
224 char *file, unsigned int size __maybe_unused)
226 unsigned long long addr;
234 line = strtok_r(file, "\n", &next);
237 addr_str = strtok_r(line, " ", &fmt);
238 addr = strtoull(addr_str, NULL, 16);
240 strtok_r(NULL, " ", &fmt);
241 func = strtok_r(NULL, "\t", &fmt);
242 mod = strtok_r(NULL, "]", &fmt);
243 /* truncate the extra '[' */
247 pevent_register_function(pevent, func, addr, mod);
249 line = strtok_r(NULL, "\n", &next);
253 void parse_ftrace_printk(struct pevent *pevent,
254 char *file, unsigned int size __maybe_unused)
256 unsigned long long addr;
263 line = strtok_r(file, "\n", &next);
265 addr_str = strtok_r(line, ":", &fmt);
267 warning("printk format with empty entry");
270 addr = strtoull(addr_str, NULL, 16);
271 /* fmt still has a space, skip it */
272 printk = strdup(fmt+1);
273 line = strtok_r(NULL, "\n", &next);
274 pevent_register_print_string(pevent, printk, addr);
278 int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size)
280 return pevent_parse_event(pevent, buf, size, "ftrace");
283 int parse_event_file(struct pevent *pevent,
284 char *buf, unsigned long size, char *sys)
286 return pevent_parse_event(pevent, buf, size, sys);
289 struct event_format *trace_find_next_event(struct pevent *pevent,
290 struct event_format *event)
294 if (!pevent || !pevent->events)
299 return pevent->events[0];
302 if (idx < pevent->nr_events && event == pevent->events[idx]) {
304 if (idx == pevent->nr_events)
306 return pevent->events[idx];
309 for (idx = 1; idx < pevent->nr_events; idx++) {
310 if (event == pevent->events[idx - 1])
311 return pevent->events[idx];
318 unsigned long long value;
321 static const struct flag flags[] = {
323 { "TIMER_SOFTIRQ", 1 },
324 { "NET_TX_SOFTIRQ", 2 },
325 { "NET_RX_SOFTIRQ", 3 },
326 { "BLOCK_SOFTIRQ", 4 },
327 { "BLOCK_IOPOLL_SOFTIRQ", 5 },
328 { "TASKLET_SOFTIRQ", 6 },
329 { "SCHED_SOFTIRQ", 7 },
330 { "HRTIMER_SOFTIRQ", 8 },
331 { "RCU_SOFTIRQ", 9 },
333 { "HRTIMER_NORESTART", 0 },
334 { "HRTIMER_RESTART", 1 },
337 unsigned long long eval_flag(const char *flag)
342 * Some flags in the format files do not get converted.
343 * If the flag is not numeric, see if it is something that
344 * we already know about.
346 if (isdigit(flag[0]))
347 return strtoull(flag, NULL, 0);
349 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
350 if (strcmp(flags[i].name, flag) == 0)
351 return flags[i].value;