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21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24#include <ctype.h>
25#include <errno.h>
26
27#include "../perf.h"
28#include "util.h"
29#include "trace-event.h"
30
31int header_page_size_size;
32int header_page_ts_size;
33int header_page_data_offset;
34
35bool latency_format;
36
37struct pevent *read_trace_init(int file_bigendian, int host_bigendian)
38{
39 struct pevent *pevent = pevent_alloc();
40
41 if (pevent != NULL) {
42 pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
43 pevent_set_file_bigendian(pevent, file_bigendian);
44 pevent_set_host_bigendian(pevent, host_bigendian);
45 }
46
47 return pevent;
48}
49
50static int get_common_field(struct scripting_context *context,
51 int *offset, int *size, const char *type)
52{
53 struct pevent *pevent = context->pevent;
54 struct event_format *event;
55 struct format_field *field;
56
57 if (!*size) {
58 if (!pevent->events)
59 return 0;
60
61 event = pevent->events[0];
62 field = pevent_find_common_field(event, type);
63 if (!field)
64 return 0;
65 *offset = field->offset;
66 *size = field->size;
67 }
68
69 return pevent_read_number(pevent, context->event_data + *offset, *size);
70}
71
72int common_lock_depth(struct scripting_context *context)
73{
74 static int offset;
75 static int size;
76 int ret;
77
78 ret = get_common_field(context, &size, &offset,
79 "common_lock_depth");
80 if (ret < 0)
81 return -1;
82
83 return ret;
84}
85
86int common_flags(struct scripting_context *context)
87{
88 static int offset;
89 static int size;
90 int ret;
91
92 ret = get_common_field(context, &size, &offset,
93 "common_flags");
94 if (ret < 0)
95 return -1;
96
97 return ret;
98}
99
100int common_pc(struct scripting_context *context)
101{
102 static int offset;
103 static int size;
104 int ret;
105
106 ret = get_common_field(context, &size, &offset,
107 "common_preempt_count");
108 if (ret < 0)
109 return -1;
110
111 return ret;
112}
113
114unsigned long long
115raw_field_value(struct event_format *event, const char *name, void *data)
116{
117 struct format_field *field;
118 unsigned long long val;
119
120 field = pevent_find_any_field(event, name);
121 if (!field)
122 return 0ULL;
123
124 pevent_read_number_field(field, data, &val);
125
126 return val;
127}
128
129void *raw_field_ptr(struct event_format *event, const char *name, void *data)
130{
131 struct format_field *field;
132
133 field = pevent_find_any_field(event, name);
134 if (!field)
135 return NULL;
136
137 if (field->flags & FIELD_IS_DYNAMIC) {
138 int offset;
139
140 offset = *(int *)(data + field->offset);
141 offset &= 0xffff;
142
143 return data + offset;
144 }
145
146 return data + field->offset;
147}
148
149int trace_parse_common_type(struct pevent *pevent, void *data)
150{
151 struct pevent_record record;
152
153 record.data = data;
154 return pevent_data_type(pevent, &record);
155}
156
157int trace_parse_common_pid(struct pevent *pevent, void *data)
158{
159 struct pevent_record record;
160
161 record.data = data;
162 return pevent_data_pid(pevent, &record);
163}
164
165unsigned long long read_size(struct event_format *event, void *ptr, int size)
166{
167 return pevent_read_number(event->pevent, ptr, size);
168}
169
170void event_format__print(struct event_format *event,
171 int cpu, void *data, int size)
172{
173 struct pevent_record record;
174 struct trace_seq s;
175
176 memset(&record, 0, sizeof(record));
177 record.cpu = cpu;
178 record.size = size;
179 record.data = data;
180
181 trace_seq_init(&s);
182 pevent_event_info(&s, event, &record);
183 trace_seq_do_printf(&s);
184}
185
186void print_trace_event(struct pevent *pevent, int cpu, void *data, int size)
187{
188 int type = trace_parse_common_type(pevent, data);
189 struct event_format *event = pevent_find_event(pevent, type);
190
191 if (!event) {
192 warning("ug! no event found for type %d", type);
193 return;
194 }
195
196 event_format__print(event, cpu, data, size);
197}
198
199void print_event(struct pevent *pevent, int cpu, void *data, int size,
200 unsigned long long nsecs, char *comm)
201{
202 struct pevent_record record;
203 struct trace_seq s;
204 int pid;
205
206 pevent->latency_format = latency_format;
207
208 record.ts = nsecs;
209 record.cpu = cpu;
210 record.size = size;
211 record.data = data;
212 pid = pevent_data_pid(pevent, &record);
213
214 if (!pevent_pid_is_registered(pevent, pid))
215 pevent_register_comm(pevent, comm, pid);
216
217 trace_seq_init(&s);
218 pevent_print_event(pevent, &s, &record);
219 trace_seq_do_printf(&s);
220 printf("\n");
221}
222
223void parse_proc_kallsyms(struct pevent *pevent,
224 char *file, unsigned int size __maybe_unused)
225{
226 unsigned long long addr;
227 char *func;
228 char *line;
229 char *next = NULL;
230 char *addr_str;
231 char *mod;
232 char *fmt;
233
234 line = strtok_r(file, "\n", &next);
235 while (line) {
236 mod = NULL;
237 addr_str = strtok_r(line, " ", &fmt);
238 addr = strtoull(addr_str, NULL, 16);
239
240 strtok_r(NULL, " ", &fmt);
241 func = strtok_r(NULL, "\t", &fmt);
242 mod = strtok_r(NULL, "]", &fmt);
243
244 if (mod)
245 mod = mod + 1;
246
247 pevent_register_function(pevent, func, addr, mod);
248
249 line = strtok_r(NULL, "\n", &next);
250 }
251}
252
253void parse_ftrace_printk(struct pevent *pevent,
254 char *file, unsigned int size __maybe_unused)
255{
256 unsigned long long addr;
257 char *printk;
258 char *line;
259 char *next = NULL;
260 char *addr_str;
261 char *fmt;
262
263 line = strtok_r(file, "\n", &next);
264 while (line) {
265 addr_str = strtok_r(line, ":", &fmt);
266 if (!addr_str) {
267 warning("printk format with empty entry");
268 break;
269 }
270 addr = strtoull(addr_str, NULL, 16);
271
272 printk = strdup(fmt+1);
273 line = strtok_r(NULL, "\n", &next);
274 pevent_register_print_string(pevent, printk, addr);
275 }
276}
277
278int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size)
279{
280 return pevent_parse_event(pevent, buf, size, "ftrace");
281}
282
283int parse_event_file(struct pevent *pevent,
284 char *buf, unsigned long size, char *sys)
285{
286 return pevent_parse_event(pevent, buf, size, sys);
287}
288
289struct event_format *trace_find_next_event(struct pevent *pevent,
290 struct event_format *event)
291{
292 static int idx;
293
294 if (!pevent || !pevent->events)
295 return NULL;
296
297 if (!event) {
298 idx = 0;
299 return pevent->events[0];
300 }
301
302 if (idx < pevent->nr_events && event == pevent->events[idx]) {
303 idx++;
304 if (idx == pevent->nr_events)
305 return NULL;
306 return pevent->events[idx];
307 }
308
309 for (idx = 1; idx < pevent->nr_events; idx++) {
310 if (event == pevent->events[idx - 1])
311 return pevent->events[idx];
312 }
313 return NULL;
314}
315
316struct flag {
317 const char *name;
318 unsigned long long value;
319};
320
321static const struct flag flags[] = {
322 { "HI_SOFTIRQ", 0 },
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 },
332
333 { "HRTIMER_NORESTART", 0 },
334 { "HRTIMER_RESTART", 1 },
335};
336
337unsigned long long eval_flag(const char *flag)
338{
339 int i;
340
341
342
343
344
345
346 if (isdigit(flag[0]))
347 return strtoull(flag, NULL, 0);
348
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;
352
353 return 0;
354}
355
