Commit | Line | Data |
---|---|---|
bcea3f96 | 1 | // SPDX-License-Identifier: GPL-2.0 |
f0868d1e SR |
2 | /* |
3 | * trace_output.c | |
4 | * | |
5 | * Copyright (C) 2008 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> | |
6 | * | |
7 | */ | |
f0868d1e SR |
8 | #include <linux/module.h> |
9 | #include <linux/mutex.h> | |
10 | #include <linux/ftrace.h> | |
7da89495 | 11 | #include <linux/kprobes.h> |
e6017571 | 12 | #include <linux/sched/clock.h> |
6e84f315 | 13 | #include <linux/sched/mm.h> |
96e6122c | 14 | #include <linux/idr.h> |
f0868d1e SR |
15 | |
16 | #include "trace_output.h" | |
17 | ||
18 | /* must be a power of 2 */ | |
19 | #define EVENT_HASHSIZE 128 | |
20 | ||
52f6ad6d | 21 | DECLARE_RWSEM(trace_event_sem); |
be74b73a | 22 | |
f0868d1e SR |
23 | static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly; |
24 | ||
09ae7234 SRRH |
25 | enum print_line_t trace_print_bputs_msg_only(struct trace_iterator *iter) |
26 | { | |
27 | struct trace_seq *s = &iter->seq; | |
28 | struct trace_entry *entry = iter->ent; | |
29 | struct bputs_entry *field; | |
09ae7234 SRRH |
30 | |
31 | trace_assign_type(field, entry); | |
32 | ||
19a7fe20 | 33 | trace_seq_puts(s, field->str); |
09ae7234 | 34 | |
19a7fe20 | 35 | return trace_handle_return(s); |
09ae7234 SRRH |
36 | } |
37 | ||
5ef841f6 SR |
38 | enum print_line_t trace_print_bprintk_msg_only(struct trace_iterator *iter) |
39 | { | |
40 | struct trace_seq *s = &iter->seq; | |
41 | struct trace_entry *entry = iter->ent; | |
42 | struct bprint_entry *field; | |
5ef841f6 SR |
43 | |
44 | trace_assign_type(field, entry); | |
45 | ||
19a7fe20 | 46 | trace_seq_bprintf(s, field->fmt, field->buf); |
5ef841f6 | 47 | |
19a7fe20 | 48 | return trace_handle_return(s); |
5ef841f6 SR |
49 | } |
50 | ||
51 | enum print_line_t trace_print_printk_msg_only(struct trace_iterator *iter) | |
52 | { | |
53 | struct trace_seq *s = &iter->seq; | |
54 | struct trace_entry *entry = iter->ent; | |
55 | struct print_entry *field; | |
5ef841f6 SR |
56 | |
57 | trace_assign_type(field, entry); | |
58 | ||
19a7fe20 | 59 | trace_seq_puts(s, field->buf); |
5ef841f6 | 60 | |
19a7fe20 | 61 | return trace_handle_return(s); |
5ef841f6 SR |
62 | } |
63 | ||
be74b73a | 64 | const char * |
645df987 SRRH |
65 | trace_print_flags_seq(struct trace_seq *p, const char *delim, |
66 | unsigned long flags, | |
67 | const struct trace_print_flags *flag_array) | |
be74b73a SR |
68 | { |
69 | unsigned long mask; | |
70 | const char *str; | |
7b039cb4 | 71 | const char *ret = trace_seq_buffer_ptr(p); |
e404b321 | 72 | int i, first = 1; |
be74b73a | 73 | |
be74b73a SR |
74 | for (i = 0; flag_array[i].name && flags; i++) { |
75 | ||
76 | mask = flag_array[i].mask; | |
77 | if ((flags & mask) != mask) | |
78 | continue; | |
79 | ||
80 | str = flag_array[i].name; | |
81 | flags &= ~mask; | |
e404b321 | 82 | if (!first && delim) |
be74b73a | 83 | trace_seq_puts(p, delim); |
e404b321 AV |
84 | else |
85 | first = 0; | |
be74b73a SR |
86 | trace_seq_puts(p, str); |
87 | } | |
88 | ||
89 | /* check for left over flags */ | |
90 | if (flags) { | |
5b349261 | 91 | if (!first && delim) |
be74b73a SR |
92 | trace_seq_puts(p, delim); |
93 | trace_seq_printf(p, "0x%lx", flags); | |
94 | } | |
95 | ||
96 | trace_seq_putc(p, 0); | |
97 | ||
56d8bd3f | 98 | return ret; |
be74b73a | 99 | } |
645df987 | 100 | EXPORT_SYMBOL(trace_print_flags_seq); |
be74b73a | 101 | |
0f4fc29d | 102 | const char * |
645df987 SRRH |
103 | trace_print_symbols_seq(struct trace_seq *p, unsigned long val, |
104 | const struct trace_print_flags *symbol_array) | |
0f4fc29d SR |
105 | { |
106 | int i; | |
7b039cb4 | 107 | const char *ret = trace_seq_buffer_ptr(p); |
0f4fc29d SR |
108 | |
109 | for (i = 0; symbol_array[i].name; i++) { | |
110 | ||
111 | if (val != symbol_array[i].mask) | |
112 | continue; | |
113 | ||
114 | trace_seq_puts(p, symbol_array[i].name); | |
115 | break; | |
116 | } | |
117 | ||
7b039cb4 | 118 | if (ret == (const char *)(trace_seq_buffer_ptr(p))) |
0f4fc29d | 119 | trace_seq_printf(p, "0x%lx", val); |
8e1e1df2 | 120 | |
0f4fc29d SR |
121 | trace_seq_putc(p, 0); |
122 | ||
56d8bd3f | 123 | return ret; |
0f4fc29d | 124 | } |
645df987 | 125 | EXPORT_SYMBOL(trace_print_symbols_seq); |
0f4fc29d | 126 | |
2fc1b6f0 | 127 | #if BITS_PER_LONG == 32 |
d3213e8f RZ |
128 | const char * |
129 | trace_print_flags_seq_u64(struct trace_seq *p, const char *delim, | |
130 | unsigned long long flags, | |
131 | const struct trace_print_flags_u64 *flag_array) | |
132 | { | |
133 | unsigned long long mask; | |
134 | const char *str; | |
135 | const char *ret = trace_seq_buffer_ptr(p); | |
136 | int i, first = 1; | |
137 | ||
138 | for (i = 0; flag_array[i].name && flags; i++) { | |
139 | ||
140 | mask = flag_array[i].mask; | |
141 | if ((flags & mask) != mask) | |
142 | continue; | |
143 | ||
144 | str = flag_array[i].name; | |
145 | flags &= ~mask; | |
146 | if (!first && delim) | |
147 | trace_seq_puts(p, delim); | |
148 | else | |
149 | first = 0; | |
150 | trace_seq_puts(p, str); | |
151 | } | |
152 | ||
153 | /* check for left over flags */ | |
154 | if (flags) { | |
155 | if (!first && delim) | |
156 | trace_seq_puts(p, delim); | |
157 | trace_seq_printf(p, "0x%llx", flags); | |
158 | } | |
159 | ||
160 | trace_seq_putc(p, 0); | |
161 | ||
162 | return ret; | |
163 | } | |
164 | EXPORT_SYMBOL(trace_print_flags_seq_u64); | |
165 | ||
2fc1b6f0 | 166 | const char * |
645df987 | 167 | trace_print_symbols_seq_u64(struct trace_seq *p, unsigned long long val, |
2fc1b6f0 | 168 | const struct trace_print_flags_u64 *symbol_array) |
169 | { | |
170 | int i; | |
7b039cb4 | 171 | const char *ret = trace_seq_buffer_ptr(p); |
2fc1b6f0 | 172 | |
173 | for (i = 0; symbol_array[i].name; i++) { | |
174 | ||
175 | if (val != symbol_array[i].mask) | |
176 | continue; | |
177 | ||
178 | trace_seq_puts(p, symbol_array[i].name); | |
179 | break; | |
180 | } | |
181 | ||
7b039cb4 | 182 | if (ret == (const char *)(trace_seq_buffer_ptr(p))) |
2fc1b6f0 | 183 | trace_seq_printf(p, "0x%llx", val); |
184 | ||
185 | trace_seq_putc(p, 0); | |
186 | ||
187 | return ret; | |
188 | } | |
645df987 | 189 | EXPORT_SYMBOL(trace_print_symbols_seq_u64); |
2fc1b6f0 | 190 | #endif |
191 | ||
4449bf92 | 192 | const char * |
645df987 SRRH |
193 | trace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr, |
194 | unsigned int bitmask_size) | |
4449bf92 | 195 | { |
7b039cb4 | 196 | const char *ret = trace_seq_buffer_ptr(p); |
4449bf92 SRRH |
197 | |
198 | trace_seq_bitmask(p, bitmask_ptr, bitmask_size * 8); | |
199 | trace_seq_putc(p, 0); | |
200 | ||
201 | return ret; | |
202 | } | |
645df987 | 203 | EXPORT_SYMBOL_GPL(trace_print_bitmask_seq); |
4449bf92 | 204 | |
3898fac1 DB |
205 | /** |
206 | * trace_print_hex_seq - print buffer as hex sequence | |
207 | * @p: trace seq struct to write to | |
208 | * @buf: The buffer to print | |
209 | * @buf_len: Length of @buf in bytes | |
210 | * @concatenate: Print @buf as single hex string or with spacing | |
211 | * | |
212 | * Prints the passed buffer as a hex sequence either as a whole, | |
213 | * single hex string if @concatenate is true or with spacing after | |
214 | * each byte in case @concatenate is false. | |
215 | */ | |
5a2e3995 | 216 | const char * |
2acae0d5 | 217 | trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len, |
3898fac1 | 218 | bool concatenate) |
5a2e3995 KT |
219 | { |
220 | int i; | |
7b039cb4 | 221 | const char *ret = trace_seq_buffer_ptr(p); |
119cdbdb | 222 | const char *fmt = concatenate ? "%*phN" : "%*ph"; |
5a2e3995 | 223 | |
119cdbdb AS |
224 | for (i = 0; i < buf_len; i += 16) |
225 | trace_seq_printf(p, fmt, min(buf_len - i, 16), &buf[i]); | |
5a2e3995 KT |
226 | trace_seq_putc(p, 0); |
227 | ||
228 | return ret; | |
229 | } | |
645df987 | 230 | EXPORT_SYMBOL(trace_print_hex_seq); |
5a2e3995 | 231 | |
6ea22486 | 232 | const char * |
645df987 SRRH |
233 | trace_print_array_seq(struct trace_seq *p, const void *buf, int count, |
234 | size_t el_size) | |
6ea22486 DM |
235 | { |
236 | const char *ret = trace_seq_buffer_ptr(p); | |
237 | const char *prefix = ""; | |
238 | void *ptr = (void *)buf; | |
ac01ce14 | 239 | size_t buf_len = count * el_size; |
6ea22486 DM |
240 | |
241 | trace_seq_putc(p, '{'); | |
242 | ||
243 | while (ptr < buf + buf_len) { | |
244 | switch (el_size) { | |
245 | case 1: | |
246 | trace_seq_printf(p, "%s0x%x", prefix, | |
247 | *(u8 *)ptr); | |
248 | break; | |
249 | case 2: | |
250 | trace_seq_printf(p, "%s0x%x", prefix, | |
251 | *(u16 *)ptr); | |
252 | break; | |
253 | case 4: | |
254 | trace_seq_printf(p, "%s0x%x", prefix, | |
255 | *(u32 *)ptr); | |
256 | break; | |
257 | case 8: | |
258 | trace_seq_printf(p, "%s0x%llx", prefix, | |
259 | *(u64 *)ptr); | |
260 | break; | |
261 | default: | |
262 | trace_seq_printf(p, "BAD SIZE:%zu 0x%x", el_size, | |
263 | *(u8 *)ptr); | |
264 | el_size = 1; | |
265 | } | |
266 | prefix = ","; | |
267 | ptr += el_size; | |
268 | } | |
269 | ||
270 | trace_seq_putc(p, '}'); | |
271 | trace_seq_putc(p, 0); | |
272 | ||
273 | return ret; | |
274 | } | |
645df987 | 275 | EXPORT_SYMBOL(trace_print_array_seq); |
6ea22486 | 276 | |
ef56e047 PM |
277 | const char * |
278 | trace_print_hex_dump_seq(struct trace_seq *p, const char *prefix_str, | |
279 | int prefix_type, int rowsize, int groupsize, | |
280 | const void *buf, size_t len, bool ascii) | |
281 | { | |
282 | const char *ret = trace_seq_buffer_ptr(p); | |
283 | ||
284 | trace_seq_putc(p, '\n'); | |
285 | trace_seq_hex_dump(p, prefix_str, prefix_type, | |
286 | rowsize, groupsize, buf, len, ascii); | |
287 | trace_seq_putc(p, 0); | |
288 | return ret; | |
289 | } | |
290 | EXPORT_SYMBOL(trace_print_hex_dump_seq); | |
291 | ||
892c505a SRRH |
292 | int trace_raw_output_prep(struct trace_iterator *iter, |
293 | struct trace_event *trace_event) | |
f71130de | 294 | { |
2425bcb9 | 295 | struct trace_event_call *event; |
f71130de LZ |
296 | struct trace_seq *s = &iter->seq; |
297 | struct trace_seq *p = &iter->tmp_seq; | |
298 | struct trace_entry *entry; | |
f71130de | 299 | |
2425bcb9 | 300 | event = container_of(trace_event, struct trace_event_call, event); |
f71130de LZ |
301 | entry = iter->ent; |
302 | ||
303 | if (entry->type != event->event.type) { | |
304 | WARN_ON_ONCE(1); | |
305 | return TRACE_TYPE_UNHANDLED; | |
306 | } | |
307 | ||
308 | trace_seq_init(p); | |
687fcc4a | 309 | trace_seq_printf(s, "%s: ", trace_event_name(event)); |
19a7fe20 | 310 | |
8e2e095c | 311 | return trace_handle_return(s); |
f71130de | 312 | } |
892c505a | 313 | EXPORT_SYMBOL(trace_raw_output_prep); |
f71130de | 314 | |
efbbdaa2 MH |
315 | void trace_event_printf(struct trace_iterator *iter, const char *fmt, ...) |
316 | { | |
317 | va_list ap; | |
318 | ||
319 | va_start(ap, fmt); | |
9a6944fe | 320 | trace_check_vprintf(iter, trace_event_format(iter, fmt), ap); |
efbbdaa2 MH |
321 | va_end(ap); |
322 | } | |
323 | EXPORT_SYMBOL(trace_event_printf); | |
324 | ||
bfd5a5e8 DH |
325 | static __printf(3, 0) |
326 | int trace_output_raw(struct trace_iterator *iter, char *name, | |
327 | char *fmt, va_list ap) | |
1d6bae96 SR |
328 | { |
329 | struct trace_seq *s = &iter->seq; | |
1d6bae96 | 330 | |
19a7fe20 | 331 | trace_seq_printf(s, "%s: ", name); |
efbbdaa2 | 332 | trace_seq_vprintf(s, trace_event_format(iter, fmt), ap); |
1d6bae96 | 333 | |
19a7fe20 | 334 | return trace_handle_return(s); |
1d6bae96 SR |
335 | } |
336 | ||
892c505a | 337 | int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...) |
1d6bae96 SR |
338 | { |
339 | va_list ap; | |
340 | int ret; | |
341 | ||
342 | va_start(ap, fmt); | |
892c505a | 343 | ret = trace_output_raw(iter, name, fmt, ap); |
1d6bae96 SR |
344 | va_end(ap); |
345 | ||
346 | return ret; | |
347 | } | |
892c505a | 348 | EXPORT_SYMBOL_GPL(trace_output_call); |
1d6bae96 | 349 | |
7da89495 | 350 | static inline const char *kretprobed(const char *name, unsigned long addr) |
f0868d1e | 351 | { |
7da89495 | 352 | if (is_kretprobe_trampoline(addr)) |
f0868d1e SR |
353 | return "[unknown/kretprobe'd]"; |
354 | return name; | |
355 | } | |
f0868d1e | 356 | |
773c1670 SRV |
357 | void |
358 | trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset) | |
f0868d1e | 359 | { |
feaf1283 | 360 | #ifdef CONFIG_KALLSYMS |
bea6957d | 361 | char str[KSYM_SYMBOL_LEN]; |
f0868d1e SR |
362 | const char *name; |
363 | ||
59dd974b RV |
364 | if (offset) |
365 | sprint_symbol(str, address); | |
366 | else | |
367 | kallsyms_lookup(address, NULL, NULL, NULL, str); | |
7da89495 | 368 | name = kretprobed(str, address); |
f0868d1e | 369 | |
feaf1283 | 370 | if (name && strlen(name)) { |
bea6957d | 371 | trace_seq_puts(s, name); |
feaf1283 SRV |
372 | return; |
373 | } | |
f0868d1e | 374 | #endif |
bea6957d | 375 | trace_seq_printf(s, "0x%08lx", address); |
f0868d1e SR |
376 | } |
377 | ||
378 | #ifndef CONFIG_64BIT | |
379 | # define IP_FMT "%08lx" | |
380 | #else | |
381 | # define IP_FMT "%016lx" | |
382 | #endif | |
383 | ||
ef92480a SRRH |
384 | static int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, |
385 | unsigned long ip, unsigned long sym_flags) | |
f0868d1e SR |
386 | { |
387 | struct file *file = NULL; | |
388 | unsigned long vmstart = 0; | |
389 | int ret = 1; | |
390 | ||
d184b31c JB |
391 | if (s->full) |
392 | return 0; | |
393 | ||
f0868d1e SR |
394 | if (mm) { |
395 | const struct vm_area_struct *vma; | |
396 | ||
d8ed45c5 | 397 | mmap_read_lock(mm); |
f0868d1e SR |
398 | vma = find_vma(mm, ip); |
399 | if (vma) { | |
400 | file = vma->vm_file; | |
401 | vmstart = vma->vm_start; | |
402 | } | |
403 | if (file) { | |
404 | ret = trace_seq_path(s, &file->f_path); | |
405 | if (ret) | |
19a7fe20 SRRH |
406 | trace_seq_printf(s, "[+0x%lx]", |
407 | ip - vmstart); | |
f0868d1e | 408 | } |
d8ed45c5 | 409 | mmap_read_unlock(mm); |
f0868d1e SR |
410 | } |
411 | if (ret && ((sym_flags & TRACE_ITER_SYM_ADDR) || !file)) | |
19a7fe20 SRRH |
412 | trace_seq_printf(s, " <" IP_FMT ">", ip); |
413 | return !trace_seq_has_overflowed(s); | |
f0868d1e SR |
414 | } |
415 | ||
f0868d1e SR |
416 | int |
417 | seq_print_ip_sym(struct trace_seq *s, unsigned long ip, unsigned long sym_flags) | |
418 | { | |
19a7fe20 SRRH |
419 | if (!ip) { |
420 | trace_seq_putc(s, '0'); | |
421 | goto out; | |
422 | } | |
f0868d1e | 423 | |
773c1670 | 424 | trace_seq_print_sym(s, ip, sym_flags & TRACE_ITER_SYM_OFFSET); |
f0868d1e SR |
425 | |
426 | if (sym_flags & TRACE_ITER_SYM_ADDR) | |
19a7fe20 SRRH |
427 | trace_seq_printf(s, " <" IP_FMT ">", ip); |
428 | ||
429 | out: | |
430 | return !trace_seq_has_overflowed(s); | |
f0868d1e SR |
431 | } |
432 | ||
f81c972d SR |
433 | /** |
434 | * trace_print_lat_fmt - print the irq, preempt and lockdep fields | |
435 | * @s: trace seq struct to write to | |
436 | * @entry: The trace entry field from the ring buffer | |
437 | * | |
438 | * Prints the generic fields of irqs off, in hard or softirq, preempt | |
e6e1e259 | 439 | * count. |
f81c972d SR |
440 | */ |
441 | int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry) | |
c4a8e8be | 442 | { |
10da37a6 DS |
443 | char hardsoft_irq; |
444 | char need_resched; | |
445 | char irqs_off; | |
446 | int hardirq; | |
447 | int softirq; | |
289e7b0f | 448 | int bh_off; |
7e6867bf | 449 | int nmi; |
c4a8e8be | 450 | |
7e6867bf | 451 | nmi = entry->flags & TRACE_FLAG_NMI; |
c4a8e8be FW |
452 | hardirq = entry->flags & TRACE_FLAG_HARDIRQ; |
453 | softirq = entry->flags & TRACE_FLAG_SOFTIRQ; | |
289e7b0f | 454 | bh_off = entry->flags & TRACE_FLAG_BH_OFF; |
d9793bd8 | 455 | |
10da37a6 | 456 | irqs_off = |
289e7b0f | 457 | (entry->flags & TRACE_FLAG_IRQS_OFF && bh_off) ? 'D' : |
10da37a6 | 458 | (entry->flags & TRACE_FLAG_IRQS_OFF) ? 'd' : |
289e7b0f | 459 | bh_off ? 'b' : |
10da37a6 DS |
460 | (entry->flags & TRACE_FLAG_IRQS_NOSUPPORT) ? 'X' : |
461 | '.'; | |
e5137b50 PZ |
462 | |
463 | switch (entry->flags & (TRACE_FLAG_NEED_RESCHED | | |
464 | TRACE_FLAG_PREEMPT_RESCHED)) { | |
465 | case TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_PREEMPT_RESCHED: | |
466 | need_resched = 'N'; | |
467 | break; | |
468 | case TRACE_FLAG_NEED_RESCHED: | |
469 | need_resched = 'n'; | |
470 | break; | |
471 | case TRACE_FLAG_PREEMPT_RESCHED: | |
472 | need_resched = 'p'; | |
473 | break; | |
474 | default: | |
475 | need_resched = '.'; | |
476 | break; | |
477 | } | |
478 | ||
10da37a6 | 479 | hardsoft_irq = |
7e6867bf PZ |
480 | (nmi && hardirq) ? 'Z' : |
481 | nmi ? 'z' : | |
10da37a6 | 482 | (hardirq && softirq) ? 'H' : |
7e6867bf PZ |
483 | hardirq ? 'h' : |
484 | softirq ? 's' : | |
485 | '.' ; | |
10da37a6 | 486 | |
19a7fe20 SRRH |
487 | trace_seq_printf(s, "%c%c%c", |
488 | irqs_off, need_resched, hardsoft_irq); | |
c4a8e8be | 489 | |
54357f0c TG |
490 | if (entry->preempt_count & 0xf) |
491 | trace_seq_printf(s, "%x", entry->preempt_count & 0xf); | |
492 | else | |
493 | trace_seq_putc(s, '.'); | |
494 | ||
495 | if (entry->preempt_count & 0xf0) | |
496 | trace_seq_printf(s, "%x", entry->preempt_count >> 4); | |
637e7e86 | 497 | else |
19a7fe20 | 498 | trace_seq_putc(s, '.'); |
829b876d | 499 | |
19a7fe20 | 500 | return !trace_seq_has_overflowed(s); |
c4a8e8be FW |
501 | } |
502 | ||
f81c972d SR |
503 | static int |
504 | lat_print_generic(struct trace_seq *s, struct trace_entry *entry, int cpu) | |
505 | { | |
506 | char comm[TASK_COMM_LEN]; | |
507 | ||
508 | trace_find_cmdline(entry->pid, comm); | |
509 | ||
795d6379 | 510 | trace_seq_printf(s, "%8.8s-%-7d %3d", |
19a7fe20 | 511 | comm, entry->pid, cpu); |
f81c972d SR |
512 | |
513 | return trace_print_lat_fmt(s, entry); | |
514 | } | |
515 | ||
8e1e1df2 BP |
516 | #undef MARK |
517 | #define MARK(v, s) {.val = v, .sym = s} | |
518 | /* trace overhead mark */ | |
519 | static const struct trace_mark { | |
520 | unsigned long long val; /* unit: nsec */ | |
521 | char sym; | |
522 | } mark[] = { | |
523 | MARK(1000000000ULL , '$'), /* 1 sec */ | |
b838e1d9 JL |
524 | MARK(100000000ULL , '@'), /* 100 msec */ |
525 | MARK(10000000ULL , '*'), /* 10 msec */ | |
8e1e1df2 BP |
526 | MARK(1000000ULL , '#'), /* 1000 usecs */ |
527 | MARK(100000ULL , '!'), /* 100 usecs */ | |
528 | MARK(10000ULL , '+'), /* 10 usecs */ | |
529 | }; | |
530 | #undef MARK | |
531 | ||
532 | char trace_find_mark(unsigned long long d) | |
533 | { | |
534 | int i; | |
535 | int size = ARRAY_SIZE(mark); | |
536 | ||
537 | for (i = 0; i < size; i++) { | |
b838e1d9 | 538 | if (d > mark[i].val) |
8e1e1df2 BP |
539 | break; |
540 | } | |
541 | ||
542 | return (i == size) ? ' ' : mark[i].sym; | |
543 | } | |
c4a8e8be | 544 | |
d9793bd8 | 545 | static int |
8be0709f | 546 | lat_print_timestamp(struct trace_iterator *iter, u64 next_ts) |
c4a8e8be | 547 | { |
983f938a SRRH |
548 | struct trace_array *tr = iter->tr; |
549 | unsigned long verbose = tr->trace_flags & TRACE_ITER_VERBOSE; | |
8be0709f | 550 | unsigned long in_ns = iter->iter_flags & TRACE_FILE_TIME_IN_NS; |
1c5eb448 | 551 | unsigned long long abs_ts = iter->ts - iter->array_buffer->time_start; |
8be0709f DS |
552 | unsigned long long rel_ts = next_ts - iter->ts; |
553 | struct trace_seq *s = &iter->seq; | |
554 | ||
555 | if (in_ns) { | |
556 | abs_ts = ns2usecs(abs_ts); | |
557 | rel_ts = ns2usecs(rel_ts); | |
558 | } | |
559 | ||
560 | if (verbose && in_ns) { | |
561 | unsigned long abs_usec = do_div(abs_ts, USEC_PER_MSEC); | |
562 | unsigned long abs_msec = (unsigned long)abs_ts; | |
563 | unsigned long rel_usec = do_div(rel_ts, USEC_PER_MSEC); | |
564 | unsigned long rel_msec = (unsigned long)rel_ts; | |
565 | ||
19a7fe20 SRRH |
566 | trace_seq_printf( |
567 | s, "[%08llx] %ld.%03ldms (+%ld.%03ldms): ", | |
568 | ns2usecs(iter->ts), | |
569 | abs_msec, abs_usec, | |
570 | rel_msec, rel_usec); | |
571 | ||
8be0709f | 572 | } else if (verbose && !in_ns) { |
19a7fe20 SRRH |
573 | trace_seq_printf( |
574 | s, "[%016llx] %lld (+%lld): ", | |
575 | iter->ts, abs_ts, rel_ts); | |
576 | ||
8be0709f | 577 | } else if (!verbose && in_ns) { |
19a7fe20 SRRH |
578 | trace_seq_printf( |
579 | s, " %4lldus%c: ", | |
580 | abs_ts, | |
8e1e1df2 | 581 | trace_find_mark(rel_ts * NSEC_PER_USEC)); |
19a7fe20 | 582 | |
8be0709f | 583 | } else { /* !verbose && !in_ns */ |
19a7fe20 | 584 | trace_seq_printf(s, " %4lld: ", abs_ts); |
8be0709f | 585 | } |
19a7fe20 SRRH |
586 | |
587 | return !trace_seq_has_overflowed(s); | |
c4a8e8be FW |
588 | } |
589 | ||
eaa7a897 YKV |
590 | static void trace_print_time(struct trace_seq *s, struct trace_iterator *iter, |
591 | unsigned long long ts) | |
592 | { | |
593 | unsigned long secs, usec_rem; | |
594 | unsigned long long t; | |
595 | ||
596 | if (iter->iter_flags & TRACE_FILE_TIME_IN_NS) { | |
597 | t = ns2usecs(ts); | |
598 | usec_rem = do_div(t, USEC_PER_SEC); | |
599 | secs = (unsigned long)t; | |
600 | trace_seq_printf(s, " %5lu.%06lu", secs, usec_rem); | |
601 | } else | |
602 | trace_seq_printf(s, " %12llu", ts); | |
603 | } | |
604 | ||
c4a8e8be FW |
605 | int trace_print_context(struct trace_iterator *iter) |
606 | { | |
983f938a | 607 | struct trace_array *tr = iter->tr; |
c4a8e8be FW |
608 | struct trace_seq *s = &iter->seq; |
609 | struct trace_entry *entry = iter->ent; | |
4ca53085 SR |
610 | char comm[TASK_COMM_LEN]; |
611 | ||
612 | trace_find_cmdline(entry->pid, comm); | |
c4a8e8be | 613 | |
795d6379 | 614 | trace_seq_printf(s, "%16s-%-7d ", comm, entry->pid); |
77271ce4 | 615 | |
441dae8f JF |
616 | if (tr->trace_flags & TRACE_ITER_RECORD_TGID) { |
617 | unsigned int tgid = trace_find_tgid(entry->pid); | |
618 | ||
619 | if (!tgid) | |
795d6379 | 620 | trace_seq_printf(s, "(-------) "); |
441dae8f | 621 | else |
795d6379 | 622 | trace_seq_printf(s, "(%7d) ", tgid); |
441dae8f JF |
623 | } |
624 | ||
f8494fa3 JFG |
625 | trace_seq_printf(s, "[%03d] ", iter->cpu); |
626 | ||
983f938a | 627 | if (tr->trace_flags & TRACE_ITER_IRQ_INFO) |
19a7fe20 | 628 | trace_print_lat_fmt(s, entry); |
77271ce4 | 629 | |
eaa7a897 YKV |
630 | trace_print_time(s, iter, iter->ts); |
631 | trace_seq_puts(s, ": "); | |
19a7fe20 SRRH |
632 | |
633 | return !trace_seq_has_overflowed(s); | |
c4a8e8be FW |
634 | } |
635 | ||
636 | int trace_print_lat_context(struct trace_iterator *iter) | |
637 | { | |
ff895103 | 638 | struct trace_entry *entry, *next_entry; |
983f938a | 639 | struct trace_array *tr = iter->tr; |
c4a8e8be | 640 | struct trace_seq *s = &iter->seq; |
983f938a | 641 | unsigned long verbose = (tr->trace_flags & TRACE_ITER_VERBOSE); |
ff895103 | 642 | u64 next_ts; |
c4a8e8be | 643 | |
ff895103 | 644 | next_entry = trace_find_next_entry(iter, NULL, &next_ts); |
c4a8e8be FW |
645 | if (!next_entry) |
646 | next_ts = iter->ts; | |
c4a8e8be | 647 | |
ff895103 SRV |
648 | /* trace_find_next_entry() may change iter->ent */ |
649 | entry = iter->ent; | |
650 | ||
c4a8e8be | 651 | if (verbose) { |
4ca53085 SR |
652 | char comm[TASK_COMM_LEN]; |
653 | ||
654 | trace_find_cmdline(entry->pid, comm); | |
655 | ||
19a7fe20 | 656 | trace_seq_printf( |
795d6379 | 657 | s, "%16s %7d %3d %d %08x %08lx ", |
19a7fe20 | 658 | comm, entry->pid, iter->cpu, entry->flags, |
54357f0c | 659 | entry->preempt_count & 0xf, iter->idx); |
c4a8e8be | 660 | } else { |
19a7fe20 | 661 | lat_print_generic(s, entry, iter->cpu); |
c4a8e8be FW |
662 | } |
663 | ||
19a7fe20 | 664 | lat_print_timestamp(iter, next_ts); |
8be0709f | 665 | |
19a7fe20 | 666 | return !trace_seq_has_overflowed(s); |
c4a8e8be FW |
667 | } |
668 | ||
f0868d1e SR |
669 | /** |
670 | * ftrace_find_event - find a registered event | |
671 | * @type: the type of event to look for | |
672 | * | |
673 | * Returns an event of type @type otherwise NULL | |
4f535968 | 674 | * Called with trace_event_read_lock() held. |
f0868d1e SR |
675 | */ |
676 | struct trace_event *ftrace_find_event(int type) | |
677 | { | |
678 | struct trace_event *event; | |
f0868d1e SR |
679 | unsigned key; |
680 | ||
681 | key = type & (EVENT_HASHSIZE - 1); | |
682 | ||
b67bfe0d | 683 | hlist_for_each_entry(event, &event_hash[key], node) { |
f0868d1e SR |
684 | if (event->type == type) |
685 | return event; | |
686 | } | |
687 | ||
688 | return NULL; | |
689 | } | |
690 | ||
96e6122c | 691 | static DEFINE_IDA(trace_event_ida); |
060fa5c8 | 692 | |
96e6122c | 693 | static void free_trace_event_type(int type) |
060fa5c8 | 694 | { |
96e6122c ZY |
695 | if (type >= __TRACE_LAST_TYPE) |
696 | ida_free(&trace_event_ida, type); | |
697 | } | |
060fa5c8 | 698 | |
96e6122c ZY |
699 | static int alloc_trace_event_type(void) |
700 | { | |
701 | int next; | |
060fa5c8 | 702 | |
96e6122c ZY |
703 | /* Skip static defined type numbers */ |
704 | next = ida_alloc_range(&trace_event_ida, __TRACE_LAST_TYPE, | |
705 | TRACE_EVENT_TYPE_MAX, GFP_KERNEL); | |
706 | if (next < 0) | |
060fa5c8 | 707 | return 0; |
746cf345 | 708 | return next; |
060fa5c8 SR |
709 | } |
710 | ||
4f535968 LJ |
711 | void trace_event_read_lock(void) |
712 | { | |
52f6ad6d | 713 | down_read(&trace_event_sem); |
4f535968 LJ |
714 | } |
715 | ||
716 | void trace_event_read_unlock(void) | |
717 | { | |
52f6ad6d | 718 | up_read(&trace_event_sem); |
4f535968 LJ |
719 | } |
720 | ||
f0868d1e | 721 | /** |
9023c930 | 722 | * register_trace_event - register output for an event type |
f0868d1e SR |
723 | * @event: the event type to register |
724 | * | |
725 | * Event types are stored in a hash and this hash is used to | |
726 | * find a way to print an event. If the @event->type is set | |
727 | * then it will use that type, otherwise it will assign a | |
728 | * type to use. | |
729 | * | |
730 | * If you assign your own type, please make sure it is added | |
731 | * to the trace_type enum in trace.h, to avoid collisions | |
732 | * with the dynamic types. | |
733 | * | |
734 | * Returns the event type number or zero on error. | |
735 | */ | |
9023c930 | 736 | int register_trace_event(struct trace_event *event) |
f0868d1e SR |
737 | { |
738 | unsigned key; | |
739 | int ret = 0; | |
740 | ||
52f6ad6d | 741 | down_write(&trace_event_sem); |
f0868d1e | 742 | |
060fa5c8 | 743 | if (WARN_ON(!event)) |
28bea271 | 744 | goto out; |
28bea271 | 745 | |
a9a57763 SR |
746 | if (WARN_ON(!event->funcs)) |
747 | goto out; | |
748 | ||
060fa5c8 | 749 | if (!event->type) { |
96e6122c ZY |
750 | event->type = alloc_trace_event_type(); |
751 | if (!event->type) | |
060fa5c8 | 752 | goto out; |
4ee51101 GZ |
753 | } else if (WARN(event->type > __TRACE_LAST_TYPE, |
754 | "Need to add type to trace.h")) { | |
f0868d1e | 755 | goto out; |
060fa5c8 SR |
756 | } else { |
757 | /* Is this event already used */ | |
758 | if (ftrace_find_event(event->type)) | |
759 | goto out; | |
760 | } | |
f0868d1e | 761 | |
a9a57763 SR |
762 | if (event->funcs->trace == NULL) |
763 | event->funcs->trace = trace_nop_print; | |
764 | if (event->funcs->raw == NULL) | |
765 | event->funcs->raw = trace_nop_print; | |
766 | if (event->funcs->hex == NULL) | |
767 | event->funcs->hex = trace_nop_print; | |
768 | if (event->funcs->binary == NULL) | |
769 | event->funcs->binary = trace_nop_print; | |
268ccda0 | 770 | |
f0868d1e SR |
771 | key = event->type & (EVENT_HASHSIZE - 1); |
772 | ||
4f535968 | 773 | hlist_add_head(&event->node, &event_hash[key]); |
f0868d1e SR |
774 | |
775 | ret = event->type; | |
776 | out: | |
52f6ad6d | 777 | up_write(&trace_event_sem); |
f0868d1e SR |
778 | |
779 | return ret; | |
780 | } | |
9023c930 | 781 | EXPORT_SYMBOL_GPL(register_trace_event); |
f0868d1e | 782 | |
110bf2b7 | 783 | /* |
52f6ad6d | 784 | * Used by module code with the trace_event_sem held for write. |
110bf2b7 | 785 | */ |
9023c930 | 786 | int __unregister_trace_event(struct trace_event *event) |
110bf2b7 SR |
787 | { |
788 | hlist_del(&event->node); | |
96e6122c | 789 | free_trace_event_type(event->type); |
110bf2b7 SR |
790 | return 0; |
791 | } | |
792 | ||
f0868d1e | 793 | /** |
9023c930 | 794 | * unregister_trace_event - remove a no longer used event |
f0868d1e SR |
795 | * @event: the event to remove |
796 | */ | |
9023c930 | 797 | int unregister_trace_event(struct trace_event *event) |
f0868d1e | 798 | { |
52f6ad6d | 799 | down_write(&trace_event_sem); |
9023c930 | 800 | __unregister_trace_event(event); |
52f6ad6d | 801 | up_write(&trace_event_sem); |
f0868d1e SR |
802 | |
803 | return 0; | |
804 | } | |
9023c930 | 805 | EXPORT_SYMBOL_GPL(unregister_trace_event); |
f633cef0 SR |
806 | |
807 | /* | |
808 | * Standard events | |
809 | */ | |
810 | ||
a9a57763 SR |
811 | enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags, |
812 | struct trace_event *event) | |
f633cef0 | 813 | { |
19a7fe20 | 814 | trace_seq_printf(&iter->seq, "type: %d\n", iter->ent->type); |
ee5e51f5 | 815 | |
19a7fe20 | 816 | return trace_handle_return(&iter->seq); |
f633cef0 SR |
817 | } |
818 | ||
e1db6338 SRV |
819 | static void print_fn_trace(struct trace_seq *s, unsigned long ip, |
820 | unsigned long parent_ip, int flags) | |
821 | { | |
822 | seq_print_ip_sym(s, ip, flags); | |
823 | ||
824 | if ((flags & TRACE_ITER_PRINT_PARENT) && parent_ip) { | |
825 | trace_seq_puts(s, " <-"); | |
826 | seq_print_ip_sym(s, parent_ip, flags); | |
827 | } | |
828 | } | |
829 | ||
f633cef0 | 830 | /* TRACE_FN */ |
a9a57763 SR |
831 | static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags, |
832 | struct trace_event *event) | |
f633cef0 SR |
833 | { |
834 | struct ftrace_entry *field; | |
2c9b238e | 835 | struct trace_seq *s = &iter->seq; |
f633cef0 | 836 | |
2c9b238e | 837 | trace_assign_type(field, iter->ent); |
f633cef0 | 838 | |
e1db6338 | 839 | print_fn_trace(s, field->ip, field->parent_ip, flags); |
19a7fe20 | 840 | trace_seq_putc(s, '\n'); |
f633cef0 | 841 | |
19a7fe20 | 842 | return trace_handle_return(s); |
f633cef0 SR |
843 | } |
844 | ||
a9a57763 SR |
845 | static enum print_line_t trace_fn_raw(struct trace_iterator *iter, int flags, |
846 | struct trace_event *event) | |
f633cef0 SR |
847 | { |
848 | struct ftrace_entry *field; | |
849 | ||
2c9b238e | 850 | trace_assign_type(field, iter->ent); |
f633cef0 | 851 | |
19a7fe20 SRRH |
852 | trace_seq_printf(&iter->seq, "%lx %lx\n", |
853 | field->ip, | |
854 | field->parent_ip); | |
f633cef0 | 855 | |
19a7fe20 | 856 | return trace_handle_return(&iter->seq); |
f633cef0 SR |
857 | } |
858 | ||
a9a57763 SR |
859 | static enum print_line_t trace_fn_hex(struct trace_iterator *iter, int flags, |
860 | struct trace_event *event) | |
f633cef0 SR |
861 | { |
862 | struct ftrace_entry *field; | |
2c9b238e | 863 | struct trace_seq *s = &iter->seq; |
f633cef0 | 864 | |
2c9b238e | 865 | trace_assign_type(field, iter->ent); |
f633cef0 | 866 | |
19a7fe20 SRRH |
867 | SEQ_PUT_HEX_FIELD(s, field->ip); |
868 | SEQ_PUT_HEX_FIELD(s, field->parent_ip); | |
f633cef0 | 869 | |
19a7fe20 | 870 | return trace_handle_return(s); |
f633cef0 SR |
871 | } |
872 | ||
a9a57763 SR |
873 | static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags, |
874 | struct trace_event *event) | |
f633cef0 SR |
875 | { |
876 | struct ftrace_entry *field; | |
2c9b238e | 877 | struct trace_seq *s = &iter->seq; |
f633cef0 | 878 | |
2c9b238e | 879 | trace_assign_type(field, iter->ent); |
f633cef0 | 880 | |
19a7fe20 SRRH |
881 | SEQ_PUT_FIELD(s, field->ip); |
882 | SEQ_PUT_FIELD(s, field->parent_ip); | |
f633cef0 | 883 | |
19a7fe20 | 884 | return trace_handle_return(s); |
f633cef0 SR |
885 | } |
886 | ||
a9a57763 | 887 | static struct trace_event_functions trace_fn_funcs = { |
f633cef0 | 888 | .trace = trace_fn_trace, |
f633cef0 SR |
889 | .raw = trace_fn_raw, |
890 | .hex = trace_fn_hex, | |
891 | .binary = trace_fn_bin, | |
892 | }; | |
893 | ||
a9a57763 SR |
894 | static struct trace_event trace_fn_event = { |
895 | .type = TRACE_FN, | |
896 | .funcs = &trace_fn_funcs, | |
897 | }; | |
898 | ||
f633cef0 | 899 | /* TRACE_CTX an TRACE_WAKE */ |
ae7462b4 ACM |
900 | static enum print_line_t trace_ctxwake_print(struct trace_iterator *iter, |
901 | char *delim) | |
f633cef0 SR |
902 | { |
903 | struct ctx_switch_entry *field; | |
4ca53085 | 904 | char comm[TASK_COMM_LEN]; |
f633cef0 SR |
905 | int S, T; |
906 | ||
4ca53085 | 907 | |
2c9b238e | 908 | trace_assign_type(field, iter->ent); |
f633cef0 | 909 | |
1d48b080 PZ |
910 | T = task_index_to_char(field->next_state); |
911 | S = task_index_to_char(field->prev_state); | |
4ca53085 | 912 | trace_find_cmdline(field->next_pid, comm); |
19a7fe20 | 913 | trace_seq_printf(&iter->seq, |
795d6379 | 914 | " %7d:%3d:%c %s [%03d] %7d:%3d:%c %s\n", |
19a7fe20 SRRH |
915 | field->prev_pid, |
916 | field->prev_prio, | |
917 | S, delim, | |
918 | field->next_cpu, | |
919 | field->next_pid, | |
920 | field->next_prio, | |
921 | T, comm); | |
922 | ||
923 | return trace_handle_return(&iter->seq); | |
f633cef0 SR |
924 | } |
925 | ||
a9a57763 SR |
926 | static enum print_line_t trace_ctx_print(struct trace_iterator *iter, int flags, |
927 | struct trace_event *event) | |
f633cef0 | 928 | { |
2c9b238e | 929 | return trace_ctxwake_print(iter, "==>"); |
f633cef0 SR |
930 | } |
931 | ||
ae7462b4 | 932 | static enum print_line_t trace_wake_print(struct trace_iterator *iter, |
a9a57763 | 933 | int flags, struct trace_event *event) |
f633cef0 | 934 | { |
2c9b238e | 935 | return trace_ctxwake_print(iter, " +"); |
f633cef0 SR |
936 | } |
937 | ||
2c9b238e | 938 | static int trace_ctxwake_raw(struct trace_iterator *iter, char S) |
f633cef0 SR |
939 | { |
940 | struct ctx_switch_entry *field; | |
941 | int T; | |
942 | ||
2c9b238e | 943 | trace_assign_type(field, iter->ent); |
f633cef0 SR |
944 | |
945 | if (!S) | |
1d48b080 PZ |
946 | S = task_index_to_char(field->prev_state); |
947 | T = task_index_to_char(field->next_state); | |
19a7fe20 SRRH |
948 | trace_seq_printf(&iter->seq, "%d %d %c %d %d %d %c\n", |
949 | field->prev_pid, | |
950 | field->prev_prio, | |
951 | S, | |
952 | field->next_cpu, | |
953 | field->next_pid, | |
954 | field->next_prio, | |
955 | T); | |
956 | ||
957 | return trace_handle_return(&iter->seq); | |
f633cef0 SR |
958 | } |
959 | ||
a9a57763 SR |
960 | static enum print_line_t trace_ctx_raw(struct trace_iterator *iter, int flags, |
961 | struct trace_event *event) | |
f633cef0 | 962 | { |
2c9b238e | 963 | return trace_ctxwake_raw(iter, 0); |
f633cef0 SR |
964 | } |
965 | ||
a9a57763 SR |
966 | static enum print_line_t trace_wake_raw(struct trace_iterator *iter, int flags, |
967 | struct trace_event *event) | |
f633cef0 | 968 | { |
2c9b238e | 969 | return trace_ctxwake_raw(iter, '+'); |
f633cef0 SR |
970 | } |
971 | ||
972 | ||
2c9b238e | 973 | static int trace_ctxwake_hex(struct trace_iterator *iter, char S) |
f633cef0 SR |
974 | { |
975 | struct ctx_switch_entry *field; | |
2c9b238e | 976 | struct trace_seq *s = &iter->seq; |
f633cef0 SR |
977 | int T; |
978 | ||
2c9b238e | 979 | trace_assign_type(field, iter->ent); |
f633cef0 SR |
980 | |
981 | if (!S) | |
1d48b080 PZ |
982 | S = task_index_to_char(field->prev_state); |
983 | T = task_index_to_char(field->next_state); | |
f633cef0 | 984 | |
19a7fe20 SRRH |
985 | SEQ_PUT_HEX_FIELD(s, field->prev_pid); |
986 | SEQ_PUT_HEX_FIELD(s, field->prev_prio); | |
987 | SEQ_PUT_HEX_FIELD(s, S); | |
988 | SEQ_PUT_HEX_FIELD(s, field->next_cpu); | |
989 | SEQ_PUT_HEX_FIELD(s, field->next_pid); | |
990 | SEQ_PUT_HEX_FIELD(s, field->next_prio); | |
991 | SEQ_PUT_HEX_FIELD(s, T); | |
f633cef0 | 992 | |
19a7fe20 | 993 | return trace_handle_return(s); |
f633cef0 SR |
994 | } |
995 | ||
a9a57763 SR |
996 | static enum print_line_t trace_ctx_hex(struct trace_iterator *iter, int flags, |
997 | struct trace_event *event) | |
f633cef0 | 998 | { |
2c9b238e | 999 | return trace_ctxwake_hex(iter, 0); |
f633cef0 SR |
1000 | } |
1001 | ||
a9a57763 SR |
1002 | static enum print_line_t trace_wake_hex(struct trace_iterator *iter, int flags, |
1003 | struct trace_event *event) | |
f633cef0 | 1004 | { |
2c9b238e | 1005 | return trace_ctxwake_hex(iter, '+'); |
f633cef0 SR |
1006 | } |
1007 | ||
ae7462b4 | 1008 | static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter, |
a9a57763 | 1009 | int flags, struct trace_event *event) |
f633cef0 SR |
1010 | { |
1011 | struct ctx_switch_entry *field; | |
2c9b238e | 1012 | struct trace_seq *s = &iter->seq; |
f633cef0 | 1013 | |
2c9b238e | 1014 | trace_assign_type(field, iter->ent); |
f633cef0 | 1015 | |
19a7fe20 SRRH |
1016 | SEQ_PUT_FIELD(s, field->prev_pid); |
1017 | SEQ_PUT_FIELD(s, field->prev_prio); | |
1018 | SEQ_PUT_FIELD(s, field->prev_state); | |
1019 | SEQ_PUT_FIELD(s, field->next_cpu); | |
1020 | SEQ_PUT_FIELD(s, field->next_pid); | |
1021 | SEQ_PUT_FIELD(s, field->next_prio); | |
1022 | SEQ_PUT_FIELD(s, field->next_state); | |
f633cef0 | 1023 | |
19a7fe20 | 1024 | return trace_handle_return(s); |
f633cef0 SR |
1025 | } |
1026 | ||
a9a57763 | 1027 | static struct trace_event_functions trace_ctx_funcs = { |
f633cef0 | 1028 | .trace = trace_ctx_print, |
f633cef0 SR |
1029 | .raw = trace_ctx_raw, |
1030 | .hex = trace_ctx_hex, | |
1031 | .binary = trace_ctxwake_bin, | |
1032 | }; | |
1033 | ||
a9a57763 SR |
1034 | static struct trace_event trace_ctx_event = { |
1035 | .type = TRACE_CTX, | |
1036 | .funcs = &trace_ctx_funcs, | |
1037 | }; | |
1038 | ||
1039 | static struct trace_event_functions trace_wake_funcs = { | |
f633cef0 | 1040 | .trace = trace_wake_print, |
f633cef0 SR |
1041 | .raw = trace_wake_raw, |
1042 | .hex = trace_wake_hex, | |
1043 | .binary = trace_ctxwake_bin, | |
1044 | }; | |
1045 | ||
a9a57763 SR |
1046 | static struct trace_event trace_wake_event = { |
1047 | .type = TRACE_WAKE, | |
1048 | .funcs = &trace_wake_funcs, | |
1049 | }; | |
1050 | ||
f633cef0 SR |
1051 | /* TRACE_STACK */ |
1052 | ||
ae7462b4 | 1053 | static enum print_line_t trace_stack_print(struct trace_iterator *iter, |
a9a57763 | 1054 | int flags, struct trace_event *event) |
f633cef0 SR |
1055 | { |
1056 | struct stack_entry *field; | |
2c9b238e | 1057 | struct trace_seq *s = &iter->seq; |
4a9bd3f1 SR |
1058 | unsigned long *p; |
1059 | unsigned long *end; | |
f633cef0 | 1060 | |
2c9b238e | 1061 | trace_assign_type(field, iter->ent); |
4a9bd3f1 | 1062 | end = (unsigned long *)((long)iter->ent + iter->ent_size); |
f633cef0 | 1063 | |
19a7fe20 | 1064 | trace_seq_puts(s, "<stack trace>\n"); |
4a9bd3f1 | 1065 | |
becf33f6 | 1066 | for (p = field->caller; p && p < end && *p != ULONG_MAX; p++) { |
f633cef0 | 1067 | |
19a7fe20 SRRH |
1068 | if (trace_seq_has_overflowed(s)) |
1069 | break; | |
f633cef0 | 1070 | |
19a7fe20 SRRH |
1071 | trace_seq_puts(s, " => "); |
1072 | seq_print_ip_sym(s, *p, flags); | |
1073 | trace_seq_putc(s, '\n'); | |
1074 | } | |
f633cef0 | 1075 | |
19a7fe20 | 1076 | return trace_handle_return(s); |
f633cef0 SR |
1077 | } |
1078 | ||
a9a57763 | 1079 | static struct trace_event_functions trace_stack_funcs = { |
f633cef0 | 1080 | .trace = trace_stack_print, |
f633cef0 SR |
1081 | }; |
1082 | ||
a9a57763 SR |
1083 | static struct trace_event trace_stack_event = { |
1084 | .type = TRACE_STACK, | |
1085 | .funcs = &trace_stack_funcs, | |
1086 | }; | |
1087 | ||
f633cef0 | 1088 | /* TRACE_USER_STACK */ |
ae7462b4 | 1089 | static enum print_line_t trace_user_stack_print(struct trace_iterator *iter, |
a9a57763 | 1090 | int flags, struct trace_event *event) |
f633cef0 | 1091 | { |
983f938a | 1092 | struct trace_array *tr = iter->tr; |
f633cef0 | 1093 | struct userstack_entry *field; |
2c9b238e | 1094 | struct trace_seq *s = &iter->seq; |
6b1032d5 SRRH |
1095 | struct mm_struct *mm = NULL; |
1096 | unsigned int i; | |
f633cef0 | 1097 | |
2c9b238e | 1098 | trace_assign_type(field, iter->ent); |
f633cef0 | 1099 | |
19a7fe20 | 1100 | trace_seq_puts(s, "<user stack trace>\n"); |
6b1032d5 | 1101 | |
983f938a | 1102 | if (tr->trace_flags & TRACE_ITER_SYM_USEROBJ) { |
6b1032d5 SRRH |
1103 | struct task_struct *task; |
1104 | /* | |
1105 | * we do the lookup on the thread group leader, | |
1106 | * since individual threads might have already quit! | |
1107 | */ | |
1108 | rcu_read_lock(); | |
1109 | task = find_task_by_vpid(field->tgid); | |
1110 | if (task) | |
1111 | mm = get_task_mm(task); | |
1112 | rcu_read_unlock(); | |
1113 | } | |
1114 | ||
1115 | for (i = 0; i < FTRACE_STACK_ENTRIES; i++) { | |
1116 | unsigned long ip = field->caller[i]; | |
1117 | ||
6d54ceb5 | 1118 | if (!ip || trace_seq_has_overflowed(s)) |
6b1032d5 SRRH |
1119 | break; |
1120 | ||
1121 | trace_seq_puts(s, " => "); | |
6b1032d5 SRRH |
1122 | seq_print_user_ip(s, mm, ip, flags); |
1123 | trace_seq_putc(s, '\n'); | |
1124 | } | |
1125 | ||
1126 | if (mm) | |
1127 | mmput(mm); | |
f633cef0 | 1128 | |
19a7fe20 | 1129 | return trace_handle_return(s); |
f633cef0 SR |
1130 | } |
1131 | ||
a9a57763 | 1132 | static struct trace_event_functions trace_user_stack_funcs = { |
f633cef0 | 1133 | .trace = trace_user_stack_print, |
f633cef0 SR |
1134 | }; |
1135 | ||
a9a57763 SR |
1136 | static struct trace_event trace_user_stack_event = { |
1137 | .type = TRACE_USER_STACK, | |
1138 | .funcs = &trace_user_stack_funcs, | |
1139 | }; | |
1140 | ||
e7c15cd8 SRRH |
1141 | /* TRACE_HWLAT */ |
1142 | static enum print_line_t | |
1143 | trace_hwlat_print(struct trace_iterator *iter, int flags, | |
1144 | struct trace_event *event) | |
1145 | { | |
1146 | struct trace_entry *entry = iter->ent; | |
1147 | struct trace_seq *s = &iter->seq; | |
1148 | struct hwlat_entry *field; | |
1149 | ||
1150 | trace_assign_type(field, entry); | |
1151 | ||
b396bfde | 1152 | trace_seq_printf(s, "#%-5u inner/outer(us): %4llu/%-5llu ts:%lld.%09ld count:%d", |
e7c15cd8 SRRH |
1153 | field->seqnum, |
1154 | field->duration, | |
1155 | field->outer_duration, | |
51aad0ae | 1156 | (long long)field->timestamp.tv_sec, |
b396bfde | 1157 | field->timestamp.tv_nsec, field->count); |
e7c15cd8 | 1158 | |
7b2c8625 SRRH |
1159 | if (field->nmi_count) { |
1160 | /* | |
1161 | * The generic sched_clock() is not NMI safe, thus | |
1162 | * we only record the count and not the time. | |
1163 | */ | |
1164 | if (!IS_ENABLED(CONFIG_GENERIC_SCHED_CLOCK)) | |
1165 | trace_seq_printf(s, " nmi-total:%llu", | |
1166 | field->nmi_total_ts); | |
1167 | trace_seq_printf(s, " nmi-count:%u", | |
1168 | field->nmi_count); | |
1169 | } | |
1170 | ||
1171 | trace_seq_putc(s, '\n'); | |
1172 | ||
e7c15cd8 SRRH |
1173 | return trace_handle_return(s); |
1174 | } | |
1175 | ||
e7c15cd8 SRRH |
1176 | static enum print_line_t |
1177 | trace_hwlat_raw(struct trace_iterator *iter, int flags, | |
1178 | struct trace_event *event) | |
1179 | { | |
1180 | struct hwlat_entry *field; | |
1181 | struct trace_seq *s = &iter->seq; | |
1182 | ||
1183 | trace_assign_type(field, iter->ent); | |
1184 | ||
51aad0ae | 1185 | trace_seq_printf(s, "%llu %lld %lld %09ld %u\n", |
e7c15cd8 SRRH |
1186 | field->duration, |
1187 | field->outer_duration, | |
51aad0ae | 1188 | (long long)field->timestamp.tv_sec, |
e7c15cd8 SRRH |
1189 | field->timestamp.tv_nsec, |
1190 | field->seqnum); | |
1191 | ||
1192 | return trace_handle_return(s); | |
1193 | } | |
1194 | ||
1195 | static struct trace_event_functions trace_hwlat_funcs = { | |
1196 | .trace = trace_hwlat_print, | |
1197 | .raw = trace_hwlat_raw, | |
1198 | }; | |
1199 | ||
1200 | static struct trace_event trace_hwlat_event = { | |
1201 | .type = TRACE_HWLAT, | |
1202 | .funcs = &trace_hwlat_funcs, | |
1203 | }; | |
1204 | ||
bce29ac9 DBO |
1205 | /* TRACE_OSNOISE */ |
1206 | static enum print_line_t | |
1207 | trace_osnoise_print(struct trace_iterator *iter, int flags, | |
1208 | struct trace_event *event) | |
1209 | { | |
1210 | struct trace_entry *entry = iter->ent; | |
1211 | struct trace_seq *s = &iter->seq; | |
1212 | struct osnoise_entry *field; | |
1213 | u64 ratio, ratio_dec; | |
1214 | u64 net_runtime; | |
1215 | ||
1216 | trace_assign_type(field, entry); | |
1217 | ||
1218 | /* | |
1219 | * compute the available % of cpu time. | |
1220 | */ | |
1221 | net_runtime = field->runtime - field->noise; | |
1222 | ratio = net_runtime * 10000000; | |
1223 | do_div(ratio, field->runtime); | |
1224 | ratio_dec = do_div(ratio, 100000); | |
1225 | ||
1226 | trace_seq_printf(s, "%llu %10llu %3llu.%05llu %7llu", | |
1227 | field->runtime, | |
1228 | field->noise, | |
1229 | ratio, ratio_dec, | |
1230 | field->max_sample); | |
1231 | ||
1232 | trace_seq_printf(s, " %6u", field->hw_count); | |
1233 | trace_seq_printf(s, " %6u", field->nmi_count); | |
1234 | trace_seq_printf(s, " %6u", field->irq_count); | |
1235 | trace_seq_printf(s, " %6u", field->softirq_count); | |
1236 | trace_seq_printf(s, " %6u", field->thread_count); | |
1237 | ||
1238 | trace_seq_putc(s, '\n'); | |
1239 | ||
1240 | return trace_handle_return(s); | |
1241 | } | |
1242 | ||
1243 | static enum print_line_t | |
1244 | trace_osnoise_raw(struct trace_iterator *iter, int flags, | |
1245 | struct trace_event *event) | |
1246 | { | |
1247 | struct osnoise_entry *field; | |
1248 | struct trace_seq *s = &iter->seq; | |
1249 | ||
1250 | trace_assign_type(field, iter->ent); | |
1251 | ||
1252 | trace_seq_printf(s, "%lld %llu %llu %u %u %u %u %u\n", | |
1253 | field->runtime, | |
1254 | field->noise, | |
1255 | field->max_sample, | |
1256 | field->hw_count, | |
1257 | field->nmi_count, | |
1258 | field->irq_count, | |
1259 | field->softirq_count, | |
1260 | field->thread_count); | |
1261 | ||
1262 | return trace_handle_return(s); | |
1263 | } | |
1264 | ||
1265 | static struct trace_event_functions trace_osnoise_funcs = { | |
1266 | .trace = trace_osnoise_print, | |
1267 | .raw = trace_osnoise_raw, | |
1268 | }; | |
1269 | ||
1270 | static struct trace_event trace_osnoise_event = { | |
1271 | .type = TRACE_OSNOISE, | |
1272 | .funcs = &trace_osnoise_funcs, | |
1273 | }; | |
1274 | ||
a955d7ea DBO |
1275 | /* TRACE_TIMERLAT */ |
1276 | static enum print_line_t | |
1277 | trace_timerlat_print(struct trace_iterator *iter, int flags, | |
1278 | struct trace_event *event) | |
1279 | { | |
1280 | struct trace_entry *entry = iter->ent; | |
1281 | struct trace_seq *s = &iter->seq; | |
1282 | struct timerlat_entry *field; | |
1283 | ||
1284 | trace_assign_type(field, entry); | |
1285 | ||
1286 | trace_seq_printf(s, "#%-5u context %6s timer_latency %9llu ns\n", | |
1287 | field->seqnum, | |
1288 | field->context ? "thread" : "irq", | |
1289 | field->timer_latency); | |
1290 | ||
1291 | return trace_handle_return(s); | |
1292 | } | |
1293 | ||
1294 | static enum print_line_t | |
1295 | trace_timerlat_raw(struct trace_iterator *iter, int flags, | |
1296 | struct trace_event *event) | |
1297 | { | |
1298 | struct timerlat_entry *field; | |
1299 | struct trace_seq *s = &iter->seq; | |
1300 | ||
1301 | trace_assign_type(field, iter->ent); | |
1302 | ||
1303 | trace_seq_printf(s, "%u %d %llu\n", | |
1304 | field->seqnum, | |
1305 | field->context, | |
1306 | field->timer_latency); | |
1307 | ||
1308 | return trace_handle_return(s); | |
1309 | } | |
1310 | ||
1311 | static struct trace_event_functions trace_timerlat_funcs = { | |
1312 | .trace = trace_timerlat_print, | |
1313 | .raw = trace_timerlat_raw, | |
1314 | }; | |
1315 | ||
1316 | static struct trace_event trace_timerlat_event = { | |
1317 | .type = TRACE_TIMERLAT, | |
1318 | .funcs = &trace_timerlat_funcs, | |
1319 | }; | |
1320 | ||
09ae7234 SRRH |
1321 | /* TRACE_BPUTS */ |
1322 | static enum print_line_t | |
1323 | trace_bputs_print(struct trace_iterator *iter, int flags, | |
1324 | struct trace_event *event) | |
1325 | { | |
1326 | struct trace_entry *entry = iter->ent; | |
1327 | struct trace_seq *s = &iter->seq; | |
1328 | struct bputs_entry *field; | |
1329 | ||
1330 | trace_assign_type(field, entry); | |
1331 | ||
19a7fe20 SRRH |
1332 | seq_print_ip_sym(s, field->ip, flags); |
1333 | trace_seq_puts(s, ": "); | |
1334 | trace_seq_puts(s, field->str); | |
09ae7234 | 1335 | |
19a7fe20 | 1336 | return trace_handle_return(s); |
09ae7234 SRRH |
1337 | } |
1338 | ||
1339 | ||
1340 | static enum print_line_t | |
1341 | trace_bputs_raw(struct trace_iterator *iter, int flags, | |
1342 | struct trace_event *event) | |
1343 | { | |
1344 | struct bputs_entry *field; | |
1345 | struct trace_seq *s = &iter->seq; | |
1346 | ||
1347 | trace_assign_type(field, iter->ent); | |
1348 | ||
19a7fe20 SRRH |
1349 | trace_seq_printf(s, ": %lx : ", field->ip); |
1350 | trace_seq_puts(s, field->str); | |
09ae7234 | 1351 | |
19a7fe20 | 1352 | return trace_handle_return(s); |
09ae7234 SRRH |
1353 | } |
1354 | ||
1355 | static struct trace_event_functions trace_bputs_funcs = { | |
1356 | .trace = trace_bputs_print, | |
1357 | .raw = trace_bputs_raw, | |
1358 | }; | |
1359 | ||
1360 | static struct trace_event trace_bputs_event = { | |
1361 | .type = TRACE_BPUTS, | |
1362 | .funcs = &trace_bputs_funcs, | |
1363 | }; | |
1364 | ||
48ead020 | 1365 | /* TRACE_BPRINT */ |
1427cdf0 | 1366 | static enum print_line_t |
a9a57763 SR |
1367 | trace_bprint_print(struct trace_iterator *iter, int flags, |
1368 | struct trace_event *event) | |
1427cdf0 LJ |
1369 | { |
1370 | struct trace_entry *entry = iter->ent; | |
1371 | struct trace_seq *s = &iter->seq; | |
48ead020 | 1372 | struct bprint_entry *field; |
1427cdf0 LJ |
1373 | |
1374 | trace_assign_type(field, entry); | |
1375 | ||
19a7fe20 SRRH |
1376 | seq_print_ip_sym(s, field->ip, flags); |
1377 | trace_seq_puts(s, ": "); | |
1378 | trace_seq_bprintf(s, field->fmt, field->buf); | |
1427cdf0 | 1379 | |
19a7fe20 | 1380 | return trace_handle_return(s); |
1427cdf0 LJ |
1381 | } |
1382 | ||
769b0441 | 1383 | |
48ead020 | 1384 | static enum print_line_t |
a9a57763 SR |
1385 | trace_bprint_raw(struct trace_iterator *iter, int flags, |
1386 | struct trace_event *event) | |
1427cdf0 | 1387 | { |
48ead020 | 1388 | struct bprint_entry *field; |
1427cdf0 | 1389 | struct trace_seq *s = &iter->seq; |
1427cdf0 | 1390 | |
769b0441 | 1391 | trace_assign_type(field, iter->ent); |
1427cdf0 | 1392 | |
19a7fe20 SRRH |
1393 | trace_seq_printf(s, ": %lx : ", field->ip); |
1394 | trace_seq_bprintf(s, field->fmt, field->buf); | |
1427cdf0 | 1395 | |
19a7fe20 | 1396 | return trace_handle_return(s); |
1427cdf0 LJ |
1397 | } |
1398 | ||
a9a57763 SR |
1399 | static struct trace_event_functions trace_bprint_funcs = { |
1400 | .trace = trace_bprint_print, | |
1401 | .raw = trace_bprint_raw, | |
1402 | }; | |
769b0441 | 1403 | |
48ead020 FW |
1404 | static struct trace_event trace_bprint_event = { |
1405 | .type = TRACE_BPRINT, | |
a9a57763 | 1406 | .funcs = &trace_bprint_funcs, |
48ead020 FW |
1407 | }; |
1408 | ||
1409 | /* TRACE_PRINT */ | |
1410 | static enum print_line_t trace_print_print(struct trace_iterator *iter, | |
a9a57763 | 1411 | int flags, struct trace_event *event) |
48ead020 FW |
1412 | { |
1413 | struct print_entry *field; | |
1414 | struct trace_seq *s = &iter->seq; | |
1415 | ||
1416 | trace_assign_type(field, iter->ent); | |
1417 | ||
19a7fe20 SRRH |
1418 | seq_print_ip_sym(s, field->ip, flags); |
1419 | trace_seq_printf(s, ": %s", field->buf); | |
48ead020 | 1420 | |
19a7fe20 | 1421 | return trace_handle_return(s); |
48ead020 FW |
1422 | } |
1423 | ||
a9a57763 SR |
1424 | static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags, |
1425 | struct trace_event *event) | |
48ead020 FW |
1426 | { |
1427 | struct print_entry *field; | |
1428 | ||
1429 | trace_assign_type(field, iter->ent); | |
1430 | ||
19a7fe20 | 1431 | trace_seq_printf(&iter->seq, "# %lx %s", field->ip, field->buf); |
48ead020 | 1432 | |
19a7fe20 | 1433 | return trace_handle_return(&iter->seq); |
48ead020 FW |
1434 | } |
1435 | ||
a9a57763 | 1436 | static struct trace_event_functions trace_print_funcs = { |
769b0441 FW |
1437 | .trace = trace_print_print, |
1438 | .raw = trace_print_raw, | |
1427cdf0 LJ |
1439 | }; |
1440 | ||
a9a57763 SR |
1441 | static struct trace_event trace_print_event = { |
1442 | .type = TRACE_PRINT, | |
1443 | .funcs = &trace_print_funcs, | |
1444 | }; | |
1445 | ||
fa32e855 SR |
1446 | static enum print_line_t trace_raw_data(struct trace_iterator *iter, int flags, |
1447 | struct trace_event *event) | |
1448 | { | |
1449 | struct raw_data_entry *field; | |
1450 | int i; | |
1451 | ||
1452 | trace_assign_type(field, iter->ent); | |
1453 | ||
1454 | trace_seq_printf(&iter->seq, "# %x buf:", field->id); | |
1455 | ||
1456 | for (i = 0; i < iter->ent_size - offsetof(struct raw_data_entry, buf); i++) | |
1457 | trace_seq_printf(&iter->seq, " %02x", | |
1458 | (unsigned char)field->buf[i]); | |
1459 | ||
1460 | trace_seq_putc(&iter->seq, '\n'); | |
1461 | ||
1462 | return trace_handle_return(&iter->seq); | |
1463 | } | |
1464 | ||
1465 | static struct trace_event_functions trace_raw_data_funcs = { | |
1466 | .trace = trace_raw_data, | |
1467 | .raw = trace_raw_data, | |
1468 | }; | |
1469 | ||
1470 | static struct trace_event trace_raw_data_event = { | |
1471 | .type = TRACE_RAW_DATA, | |
1472 | .funcs = &trace_raw_data_funcs, | |
1473 | }; | |
1474 | ||
f689e4f2 YKV |
1475 | static enum print_line_t |
1476 | trace_func_repeats_raw(struct trace_iterator *iter, int flags, | |
1477 | struct trace_event *event) | |
1478 | { | |
1479 | struct func_repeats_entry *field; | |
1480 | struct trace_seq *s = &iter->seq; | |
1481 | ||
1482 | trace_assign_type(field, iter->ent); | |
1483 | ||
1484 | trace_seq_printf(s, "%lu %lu %u %llu\n", | |
1485 | field->ip, | |
1486 | field->parent_ip, | |
1487 | field->count, | |
1488 | FUNC_REPEATS_GET_DELTA_TS(field)); | |
1489 | ||
1490 | return trace_handle_return(s); | |
1491 | } | |
1492 | ||
1493 | static enum print_line_t | |
1494 | trace_func_repeats_print(struct trace_iterator *iter, int flags, | |
1495 | struct trace_event *event) | |
1496 | { | |
1497 | struct func_repeats_entry *field; | |
1498 | struct trace_seq *s = &iter->seq; | |
1499 | ||
1500 | trace_assign_type(field, iter->ent); | |
1501 | ||
e1db6338 | 1502 | print_fn_trace(s, field->ip, field->parent_ip, flags); |
f689e4f2 YKV |
1503 | trace_seq_printf(s, " (repeats: %u, last_ts:", field->count); |
1504 | trace_print_time(s, iter, | |
1505 | iter->ts - FUNC_REPEATS_GET_DELTA_TS(field)); | |
1506 | trace_seq_puts(s, ")\n"); | |
1507 | ||
1508 | return trace_handle_return(s); | |
1509 | } | |
1510 | ||
1511 | static struct trace_event_functions trace_func_repeats_funcs = { | |
1512 | .trace = trace_func_repeats_print, | |
1513 | .raw = trace_func_repeats_raw, | |
1514 | }; | |
1515 | ||
1516 | static struct trace_event trace_func_repeats_event = { | |
1517 | .type = TRACE_FUNC_REPEATS, | |
1518 | .funcs = &trace_func_repeats_funcs, | |
1519 | }; | |
48ead020 | 1520 | |
f633cef0 SR |
1521 | static struct trace_event *events[] __initdata = { |
1522 | &trace_fn_event, | |
1523 | &trace_ctx_event, | |
1524 | &trace_wake_event, | |
f633cef0 SR |
1525 | &trace_stack_event, |
1526 | &trace_user_stack_event, | |
09ae7234 | 1527 | &trace_bputs_event, |
48ead020 | 1528 | &trace_bprint_event, |
f633cef0 | 1529 | &trace_print_event, |
e7c15cd8 | 1530 | &trace_hwlat_event, |
bce29ac9 | 1531 | &trace_osnoise_event, |
a955d7ea | 1532 | &trace_timerlat_event, |
fa32e855 | 1533 | &trace_raw_data_event, |
f689e4f2 | 1534 | &trace_func_repeats_event, |
f633cef0 SR |
1535 | NULL |
1536 | }; | |
1537 | ||
1538 | __init static int init_events(void) | |
1539 | { | |
1540 | struct trace_event *event; | |
1541 | int i, ret; | |
1542 | ||
1543 | for (i = 0; events[i]; i++) { | |
1544 | event = events[i]; | |
9023c930 | 1545 | ret = register_trace_event(event); |
4ee51101 | 1546 | WARN_ONCE(!ret, "event %d failed to register", event->type); |
f633cef0 SR |
1547 | } |
1548 | ||
1549 | return 0; | |
1550 | } | |
7374e827 | 1551 | early_initcall(init_events); |