Commit | Line | Data |
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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 | |
adace440 KL |
224 | for (i = 0; i < buf_len; i += 16) { |
225 | if (!concatenate && i != 0) | |
226 | trace_seq_putc(p, ' '); | |
119cdbdb | 227 | trace_seq_printf(p, fmt, min(buf_len - i, 16), &buf[i]); |
adace440 | 228 | } |
5a2e3995 KT |
229 | trace_seq_putc(p, 0); |
230 | ||
231 | return ret; | |
232 | } | |
645df987 | 233 | EXPORT_SYMBOL(trace_print_hex_seq); |
5a2e3995 | 234 | |
6ea22486 | 235 | const char * |
645df987 SRRH |
236 | trace_print_array_seq(struct trace_seq *p, const void *buf, int count, |
237 | size_t el_size) | |
6ea22486 DM |
238 | { |
239 | const char *ret = trace_seq_buffer_ptr(p); | |
240 | const char *prefix = ""; | |
241 | void *ptr = (void *)buf; | |
ac01ce14 | 242 | size_t buf_len = count * el_size; |
6ea22486 DM |
243 | |
244 | trace_seq_putc(p, '{'); | |
245 | ||
246 | while (ptr < buf + buf_len) { | |
247 | switch (el_size) { | |
248 | case 1: | |
249 | trace_seq_printf(p, "%s0x%x", prefix, | |
250 | *(u8 *)ptr); | |
251 | break; | |
252 | case 2: | |
253 | trace_seq_printf(p, "%s0x%x", prefix, | |
254 | *(u16 *)ptr); | |
255 | break; | |
256 | case 4: | |
257 | trace_seq_printf(p, "%s0x%x", prefix, | |
258 | *(u32 *)ptr); | |
259 | break; | |
260 | case 8: | |
261 | trace_seq_printf(p, "%s0x%llx", prefix, | |
262 | *(u64 *)ptr); | |
263 | break; | |
264 | default: | |
265 | trace_seq_printf(p, "BAD SIZE:%zu 0x%x", el_size, | |
266 | *(u8 *)ptr); | |
267 | el_size = 1; | |
268 | } | |
269 | prefix = ","; | |
270 | ptr += el_size; | |
271 | } | |
272 | ||
273 | trace_seq_putc(p, '}'); | |
274 | trace_seq_putc(p, 0); | |
275 | ||
276 | return ret; | |
277 | } | |
645df987 | 278 | EXPORT_SYMBOL(trace_print_array_seq); |
6ea22486 | 279 | |
ef56e047 PM |
280 | const char * |
281 | trace_print_hex_dump_seq(struct trace_seq *p, const char *prefix_str, | |
282 | int prefix_type, int rowsize, int groupsize, | |
283 | const void *buf, size_t len, bool ascii) | |
284 | { | |
285 | const char *ret = trace_seq_buffer_ptr(p); | |
286 | ||
287 | trace_seq_putc(p, '\n'); | |
288 | trace_seq_hex_dump(p, prefix_str, prefix_type, | |
289 | rowsize, groupsize, buf, len, ascii); | |
290 | trace_seq_putc(p, 0); | |
291 | return ret; | |
292 | } | |
293 | EXPORT_SYMBOL(trace_print_hex_dump_seq); | |
294 | ||
892c505a SRRH |
295 | int trace_raw_output_prep(struct trace_iterator *iter, |
296 | struct trace_event *trace_event) | |
f71130de | 297 | { |
2425bcb9 | 298 | struct trace_event_call *event; |
f71130de LZ |
299 | struct trace_seq *s = &iter->seq; |
300 | struct trace_seq *p = &iter->tmp_seq; | |
301 | struct trace_entry *entry; | |
f71130de | 302 | |
2425bcb9 | 303 | event = container_of(trace_event, struct trace_event_call, event); |
f71130de LZ |
304 | entry = iter->ent; |
305 | ||
306 | if (entry->type != event->event.type) { | |
307 | WARN_ON_ONCE(1); | |
308 | return TRACE_TYPE_UNHANDLED; | |
309 | } | |
310 | ||
311 | trace_seq_init(p); | |
687fcc4a | 312 | trace_seq_printf(s, "%s: ", trace_event_name(event)); |
19a7fe20 | 313 | |
8e2e095c | 314 | return trace_handle_return(s); |
f71130de | 315 | } |
892c505a | 316 | EXPORT_SYMBOL(trace_raw_output_prep); |
f71130de | 317 | |
efbbdaa2 MH |
318 | void trace_event_printf(struct trace_iterator *iter, const char *fmt, ...) |
319 | { | |
320 | va_list ap; | |
321 | ||
322 | va_start(ap, fmt); | |
9a6944fe | 323 | trace_check_vprintf(iter, trace_event_format(iter, fmt), ap); |
efbbdaa2 MH |
324 | va_end(ap); |
325 | } | |
326 | EXPORT_SYMBOL(trace_event_printf); | |
327 | ||
bfd5a5e8 DH |
328 | static __printf(3, 0) |
329 | int trace_output_raw(struct trace_iterator *iter, char *name, | |
330 | char *fmt, va_list ap) | |
1d6bae96 SR |
331 | { |
332 | struct trace_seq *s = &iter->seq; | |
1d6bae96 | 333 | |
19a7fe20 | 334 | trace_seq_printf(s, "%s: ", name); |
efbbdaa2 | 335 | trace_seq_vprintf(s, trace_event_format(iter, fmt), ap); |
1d6bae96 | 336 | |
19a7fe20 | 337 | return trace_handle_return(s); |
1d6bae96 SR |
338 | } |
339 | ||
892c505a | 340 | int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...) |
1d6bae96 SR |
341 | { |
342 | va_list ap; | |
343 | int ret; | |
344 | ||
345 | va_start(ap, fmt); | |
892c505a | 346 | ret = trace_output_raw(iter, name, fmt, ap); |
1d6bae96 SR |
347 | va_end(ap); |
348 | ||
349 | return ret; | |
350 | } | |
892c505a | 351 | EXPORT_SYMBOL_GPL(trace_output_call); |
1d6bae96 | 352 | |
7da89495 | 353 | static inline const char *kretprobed(const char *name, unsigned long addr) |
f0868d1e | 354 | { |
7da89495 | 355 | if (is_kretprobe_trampoline(addr)) |
f0868d1e SR |
356 | return "[unknown/kretprobe'd]"; |
357 | return name; | |
358 | } | |
f0868d1e | 359 | |
773c1670 SRV |
360 | void |
361 | trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset) | |
f0868d1e | 362 | { |
feaf1283 | 363 | #ifdef CONFIG_KALLSYMS |
bea6957d | 364 | char str[KSYM_SYMBOL_LEN]; |
f0868d1e SR |
365 | const char *name; |
366 | ||
59dd974b RV |
367 | if (offset) |
368 | sprint_symbol(str, address); | |
369 | else | |
370 | kallsyms_lookup(address, NULL, NULL, NULL, str); | |
7da89495 | 371 | name = kretprobed(str, address); |
f0868d1e | 372 | |
feaf1283 | 373 | if (name && strlen(name)) { |
bea6957d | 374 | trace_seq_puts(s, name); |
feaf1283 SRV |
375 | return; |
376 | } | |
f0868d1e | 377 | #endif |
bea6957d | 378 | trace_seq_printf(s, "0x%08lx", address); |
f0868d1e SR |
379 | } |
380 | ||
381 | #ifndef CONFIG_64BIT | |
382 | # define IP_FMT "%08lx" | |
383 | #else | |
384 | # define IP_FMT "%016lx" | |
385 | #endif | |
386 | ||
ef92480a SRRH |
387 | static int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, |
388 | unsigned long ip, unsigned long sym_flags) | |
f0868d1e SR |
389 | { |
390 | struct file *file = NULL; | |
391 | unsigned long vmstart = 0; | |
392 | int ret = 1; | |
393 | ||
d184b31c JB |
394 | if (s->full) |
395 | return 0; | |
396 | ||
f0868d1e SR |
397 | if (mm) { |
398 | const struct vm_area_struct *vma; | |
399 | ||
d8ed45c5 | 400 | mmap_read_lock(mm); |
f0868d1e SR |
401 | vma = find_vma(mm, ip); |
402 | if (vma) { | |
403 | file = vma->vm_file; | |
404 | vmstart = vma->vm_start; | |
405 | } | |
406 | if (file) { | |
08582d67 | 407 | ret = trace_seq_path(s, file_user_path(file)); |
f0868d1e | 408 | if (ret) |
19a7fe20 SRRH |
409 | trace_seq_printf(s, "[+0x%lx]", |
410 | ip - vmstart); | |
f0868d1e | 411 | } |
d8ed45c5 | 412 | mmap_read_unlock(mm); |
f0868d1e SR |
413 | } |
414 | if (ret && ((sym_flags & TRACE_ITER_SYM_ADDR) || !file)) | |
19a7fe20 SRRH |
415 | trace_seq_printf(s, " <" IP_FMT ">", ip); |
416 | return !trace_seq_has_overflowed(s); | |
f0868d1e SR |
417 | } |
418 | ||
f0868d1e SR |
419 | int |
420 | seq_print_ip_sym(struct trace_seq *s, unsigned long ip, unsigned long sym_flags) | |
421 | { | |
19a7fe20 SRRH |
422 | if (!ip) { |
423 | trace_seq_putc(s, '0'); | |
424 | goto out; | |
425 | } | |
f0868d1e | 426 | |
773c1670 | 427 | trace_seq_print_sym(s, ip, sym_flags & TRACE_ITER_SYM_OFFSET); |
f0868d1e SR |
428 | |
429 | if (sym_flags & TRACE_ITER_SYM_ADDR) | |
19a7fe20 SRRH |
430 | trace_seq_printf(s, " <" IP_FMT ">", ip); |
431 | ||
432 | out: | |
433 | return !trace_seq_has_overflowed(s); | |
f0868d1e SR |
434 | } |
435 | ||
f81c972d SR |
436 | /** |
437 | * trace_print_lat_fmt - print the irq, preempt and lockdep fields | |
438 | * @s: trace seq struct to write to | |
439 | * @entry: The trace entry field from the ring buffer | |
440 | * | |
441 | * Prints the generic fields of irqs off, in hard or softirq, preempt | |
e6e1e259 | 442 | * count. |
f81c972d SR |
443 | */ |
444 | int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry) | |
c4a8e8be | 445 | { |
10da37a6 DS |
446 | char hardsoft_irq; |
447 | char need_resched; | |
448 | char irqs_off; | |
449 | int hardirq; | |
450 | int softirq; | |
289e7b0f | 451 | int bh_off; |
7e6867bf | 452 | int nmi; |
c4a8e8be | 453 | |
7e6867bf | 454 | nmi = entry->flags & TRACE_FLAG_NMI; |
c4a8e8be FW |
455 | hardirq = entry->flags & TRACE_FLAG_HARDIRQ; |
456 | softirq = entry->flags & TRACE_FLAG_SOFTIRQ; | |
289e7b0f | 457 | bh_off = entry->flags & TRACE_FLAG_BH_OFF; |
d9793bd8 | 458 | |
10da37a6 | 459 | irqs_off = |
289e7b0f | 460 | (entry->flags & TRACE_FLAG_IRQS_OFF && bh_off) ? 'D' : |
10da37a6 | 461 | (entry->flags & TRACE_FLAG_IRQS_OFF) ? 'd' : |
289e7b0f | 462 | bh_off ? 'b' : |
10da37a6 DS |
463 | (entry->flags & TRACE_FLAG_IRQS_NOSUPPORT) ? 'X' : |
464 | '.'; | |
e5137b50 PZ |
465 | |
466 | switch (entry->flags & (TRACE_FLAG_NEED_RESCHED | | |
467 | TRACE_FLAG_PREEMPT_RESCHED)) { | |
468 | case TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_PREEMPT_RESCHED: | |
469 | need_resched = 'N'; | |
470 | break; | |
471 | case TRACE_FLAG_NEED_RESCHED: | |
472 | need_resched = 'n'; | |
473 | break; | |
474 | case TRACE_FLAG_PREEMPT_RESCHED: | |
475 | need_resched = 'p'; | |
476 | break; | |
477 | default: | |
478 | need_resched = '.'; | |
479 | break; | |
480 | } | |
481 | ||
10da37a6 | 482 | hardsoft_irq = |
7e6867bf PZ |
483 | (nmi && hardirq) ? 'Z' : |
484 | nmi ? 'z' : | |
10da37a6 | 485 | (hardirq && softirq) ? 'H' : |
7e6867bf PZ |
486 | hardirq ? 'h' : |
487 | softirq ? 's' : | |
488 | '.' ; | |
10da37a6 | 489 | |
19a7fe20 SRRH |
490 | trace_seq_printf(s, "%c%c%c", |
491 | irqs_off, need_resched, hardsoft_irq); | |
c4a8e8be | 492 | |
54357f0c TG |
493 | if (entry->preempt_count & 0xf) |
494 | trace_seq_printf(s, "%x", entry->preempt_count & 0xf); | |
495 | else | |
496 | trace_seq_putc(s, '.'); | |
497 | ||
498 | if (entry->preempt_count & 0xf0) | |
499 | trace_seq_printf(s, "%x", entry->preempt_count >> 4); | |
637e7e86 | 500 | else |
19a7fe20 | 501 | trace_seq_putc(s, '.'); |
829b876d | 502 | |
19a7fe20 | 503 | return !trace_seq_has_overflowed(s); |
c4a8e8be FW |
504 | } |
505 | ||
f81c972d SR |
506 | static int |
507 | lat_print_generic(struct trace_seq *s, struct trace_entry *entry, int cpu) | |
508 | { | |
509 | char comm[TASK_COMM_LEN]; | |
510 | ||
511 | trace_find_cmdline(entry->pid, comm); | |
512 | ||
795d6379 | 513 | trace_seq_printf(s, "%8.8s-%-7d %3d", |
19a7fe20 | 514 | comm, entry->pid, cpu); |
f81c972d SR |
515 | |
516 | return trace_print_lat_fmt(s, entry); | |
517 | } | |
518 | ||
8e1e1df2 BP |
519 | #undef MARK |
520 | #define MARK(v, s) {.val = v, .sym = s} | |
521 | /* trace overhead mark */ | |
522 | static const struct trace_mark { | |
523 | unsigned long long val; /* unit: nsec */ | |
524 | char sym; | |
525 | } mark[] = { | |
526 | MARK(1000000000ULL , '$'), /* 1 sec */ | |
b838e1d9 JL |
527 | MARK(100000000ULL , '@'), /* 100 msec */ |
528 | MARK(10000000ULL , '*'), /* 10 msec */ | |
8e1e1df2 BP |
529 | MARK(1000000ULL , '#'), /* 1000 usecs */ |
530 | MARK(100000ULL , '!'), /* 100 usecs */ | |
531 | MARK(10000ULL , '+'), /* 10 usecs */ | |
532 | }; | |
533 | #undef MARK | |
534 | ||
535 | char trace_find_mark(unsigned long long d) | |
536 | { | |
537 | int i; | |
538 | int size = ARRAY_SIZE(mark); | |
539 | ||
540 | for (i = 0; i < size; i++) { | |
b838e1d9 | 541 | if (d > mark[i].val) |
8e1e1df2 BP |
542 | break; |
543 | } | |
544 | ||
545 | return (i == size) ? ' ' : mark[i].sym; | |
546 | } | |
c4a8e8be | 547 | |
d9793bd8 | 548 | static int |
8be0709f | 549 | lat_print_timestamp(struct trace_iterator *iter, u64 next_ts) |
c4a8e8be | 550 | { |
983f938a SRRH |
551 | struct trace_array *tr = iter->tr; |
552 | unsigned long verbose = tr->trace_flags & TRACE_ITER_VERBOSE; | |
8be0709f | 553 | unsigned long in_ns = iter->iter_flags & TRACE_FILE_TIME_IN_NS; |
1c5eb448 | 554 | unsigned long long abs_ts = iter->ts - iter->array_buffer->time_start; |
8be0709f DS |
555 | unsigned long long rel_ts = next_ts - iter->ts; |
556 | struct trace_seq *s = &iter->seq; | |
557 | ||
558 | if (in_ns) { | |
559 | abs_ts = ns2usecs(abs_ts); | |
560 | rel_ts = ns2usecs(rel_ts); | |
561 | } | |
562 | ||
563 | if (verbose && in_ns) { | |
564 | unsigned long abs_usec = do_div(abs_ts, USEC_PER_MSEC); | |
565 | unsigned long abs_msec = (unsigned long)abs_ts; | |
566 | unsigned long rel_usec = do_div(rel_ts, USEC_PER_MSEC); | |
567 | unsigned long rel_msec = (unsigned long)rel_ts; | |
568 | ||
19a7fe20 SRRH |
569 | trace_seq_printf( |
570 | s, "[%08llx] %ld.%03ldms (+%ld.%03ldms): ", | |
571 | ns2usecs(iter->ts), | |
572 | abs_msec, abs_usec, | |
573 | rel_msec, rel_usec); | |
574 | ||
8be0709f | 575 | } else if (verbose && !in_ns) { |
19a7fe20 SRRH |
576 | trace_seq_printf( |
577 | s, "[%016llx] %lld (+%lld): ", | |
578 | iter->ts, abs_ts, rel_ts); | |
579 | ||
8be0709f | 580 | } else if (!verbose && in_ns) { |
19a7fe20 SRRH |
581 | trace_seq_printf( |
582 | s, " %4lldus%c: ", | |
583 | abs_ts, | |
8e1e1df2 | 584 | trace_find_mark(rel_ts * NSEC_PER_USEC)); |
19a7fe20 | 585 | |
8be0709f | 586 | } else { /* !verbose && !in_ns */ |
19a7fe20 | 587 | trace_seq_printf(s, " %4lld: ", abs_ts); |
8be0709f | 588 | } |
19a7fe20 SRRH |
589 | |
590 | return !trace_seq_has_overflowed(s); | |
c4a8e8be FW |
591 | } |
592 | ||
eaa7a897 YKV |
593 | static void trace_print_time(struct trace_seq *s, struct trace_iterator *iter, |
594 | unsigned long long ts) | |
595 | { | |
596 | unsigned long secs, usec_rem; | |
597 | unsigned long long t; | |
598 | ||
599 | if (iter->iter_flags & TRACE_FILE_TIME_IN_NS) { | |
600 | t = ns2usecs(ts); | |
601 | usec_rem = do_div(t, USEC_PER_SEC); | |
602 | secs = (unsigned long)t; | |
603 | trace_seq_printf(s, " %5lu.%06lu", secs, usec_rem); | |
604 | } else | |
605 | trace_seq_printf(s, " %12llu", ts); | |
606 | } | |
607 | ||
c4a8e8be FW |
608 | int trace_print_context(struct trace_iterator *iter) |
609 | { | |
983f938a | 610 | struct trace_array *tr = iter->tr; |
c4a8e8be FW |
611 | struct trace_seq *s = &iter->seq; |
612 | struct trace_entry *entry = iter->ent; | |
4ca53085 SR |
613 | char comm[TASK_COMM_LEN]; |
614 | ||
615 | trace_find_cmdline(entry->pid, comm); | |
c4a8e8be | 616 | |
795d6379 | 617 | trace_seq_printf(s, "%16s-%-7d ", comm, entry->pid); |
77271ce4 | 618 | |
441dae8f JF |
619 | if (tr->trace_flags & TRACE_ITER_RECORD_TGID) { |
620 | unsigned int tgid = trace_find_tgid(entry->pid); | |
621 | ||
622 | if (!tgid) | |
795d6379 | 623 | trace_seq_printf(s, "(-------) "); |
441dae8f | 624 | else |
795d6379 | 625 | trace_seq_printf(s, "(%7d) ", tgid); |
441dae8f JF |
626 | } |
627 | ||
f8494fa3 JFG |
628 | trace_seq_printf(s, "[%03d] ", iter->cpu); |
629 | ||
983f938a | 630 | if (tr->trace_flags & TRACE_ITER_IRQ_INFO) |
19a7fe20 | 631 | trace_print_lat_fmt(s, entry); |
77271ce4 | 632 | |
eaa7a897 YKV |
633 | trace_print_time(s, iter, iter->ts); |
634 | trace_seq_puts(s, ": "); | |
19a7fe20 SRRH |
635 | |
636 | return !trace_seq_has_overflowed(s); | |
c4a8e8be FW |
637 | } |
638 | ||
639 | int trace_print_lat_context(struct trace_iterator *iter) | |
640 | { | |
ff895103 | 641 | struct trace_entry *entry, *next_entry; |
983f938a | 642 | struct trace_array *tr = iter->tr; |
c4a8e8be | 643 | struct trace_seq *s = &iter->seq; |
983f938a | 644 | unsigned long verbose = (tr->trace_flags & TRACE_ITER_VERBOSE); |
ff895103 | 645 | u64 next_ts; |
c4a8e8be | 646 | |
ff895103 | 647 | next_entry = trace_find_next_entry(iter, NULL, &next_ts); |
c4a8e8be FW |
648 | if (!next_entry) |
649 | next_ts = iter->ts; | |
c4a8e8be | 650 | |
ff895103 SRV |
651 | /* trace_find_next_entry() may change iter->ent */ |
652 | entry = iter->ent; | |
653 | ||
c4a8e8be | 654 | if (verbose) { |
4ca53085 SR |
655 | char comm[TASK_COMM_LEN]; |
656 | ||
657 | trace_find_cmdline(entry->pid, comm); | |
658 | ||
19a7fe20 | 659 | trace_seq_printf( |
795d6379 | 660 | s, "%16s %7d %3d %d %08x %08lx ", |
19a7fe20 | 661 | comm, entry->pid, iter->cpu, entry->flags, |
54357f0c | 662 | entry->preempt_count & 0xf, iter->idx); |
c4a8e8be | 663 | } else { |
19a7fe20 | 664 | lat_print_generic(s, entry, iter->cpu); |
c4a8e8be FW |
665 | } |
666 | ||
19a7fe20 | 667 | lat_print_timestamp(iter, next_ts); |
8be0709f | 668 | |
19a7fe20 | 669 | return !trace_seq_has_overflowed(s); |
c4a8e8be FW |
670 | } |
671 | ||
f0868d1e SR |
672 | /** |
673 | * ftrace_find_event - find a registered event | |
674 | * @type: the type of event to look for | |
675 | * | |
676 | * Returns an event of type @type otherwise NULL | |
4f535968 | 677 | * Called with trace_event_read_lock() held. |
f0868d1e SR |
678 | */ |
679 | struct trace_event *ftrace_find_event(int type) | |
680 | { | |
681 | struct trace_event *event; | |
f0868d1e SR |
682 | unsigned key; |
683 | ||
684 | key = type & (EVENT_HASHSIZE - 1); | |
685 | ||
b67bfe0d | 686 | hlist_for_each_entry(event, &event_hash[key], node) { |
f0868d1e SR |
687 | if (event->type == type) |
688 | return event; | |
689 | } | |
690 | ||
691 | return NULL; | |
692 | } | |
693 | ||
96e6122c | 694 | static DEFINE_IDA(trace_event_ida); |
060fa5c8 | 695 | |
96e6122c | 696 | static void free_trace_event_type(int type) |
060fa5c8 | 697 | { |
96e6122c ZY |
698 | if (type >= __TRACE_LAST_TYPE) |
699 | ida_free(&trace_event_ida, type); | |
700 | } | |
060fa5c8 | 701 | |
96e6122c ZY |
702 | static int alloc_trace_event_type(void) |
703 | { | |
704 | int next; | |
060fa5c8 | 705 | |
96e6122c ZY |
706 | /* Skip static defined type numbers */ |
707 | next = ida_alloc_range(&trace_event_ida, __TRACE_LAST_TYPE, | |
708 | TRACE_EVENT_TYPE_MAX, GFP_KERNEL); | |
709 | if (next < 0) | |
060fa5c8 | 710 | return 0; |
746cf345 | 711 | return next; |
060fa5c8 SR |
712 | } |
713 | ||
4f535968 LJ |
714 | void trace_event_read_lock(void) |
715 | { | |
52f6ad6d | 716 | down_read(&trace_event_sem); |
4f535968 LJ |
717 | } |
718 | ||
719 | void trace_event_read_unlock(void) | |
720 | { | |
52f6ad6d | 721 | up_read(&trace_event_sem); |
4f535968 LJ |
722 | } |
723 | ||
f0868d1e | 724 | /** |
9023c930 | 725 | * register_trace_event - register output for an event type |
f0868d1e SR |
726 | * @event: the event type to register |
727 | * | |
728 | * Event types are stored in a hash and this hash is used to | |
729 | * find a way to print an event. If the @event->type is set | |
730 | * then it will use that type, otherwise it will assign a | |
731 | * type to use. | |
732 | * | |
733 | * If you assign your own type, please make sure it is added | |
734 | * to the trace_type enum in trace.h, to avoid collisions | |
735 | * with the dynamic types. | |
736 | * | |
737 | * Returns the event type number or zero on error. | |
738 | */ | |
9023c930 | 739 | int register_trace_event(struct trace_event *event) |
f0868d1e SR |
740 | { |
741 | unsigned key; | |
742 | int ret = 0; | |
743 | ||
52f6ad6d | 744 | down_write(&trace_event_sem); |
f0868d1e | 745 | |
060fa5c8 | 746 | if (WARN_ON(!event)) |
28bea271 | 747 | goto out; |
28bea271 | 748 | |
a9a57763 SR |
749 | if (WARN_ON(!event->funcs)) |
750 | goto out; | |
751 | ||
060fa5c8 | 752 | if (!event->type) { |
96e6122c ZY |
753 | event->type = alloc_trace_event_type(); |
754 | if (!event->type) | |
060fa5c8 | 755 | goto out; |
4ee51101 GZ |
756 | } else if (WARN(event->type > __TRACE_LAST_TYPE, |
757 | "Need to add type to trace.h")) { | |
f0868d1e | 758 | goto out; |
060fa5c8 SR |
759 | } else { |
760 | /* Is this event already used */ | |
761 | if (ftrace_find_event(event->type)) | |
762 | goto out; | |
763 | } | |
f0868d1e | 764 | |
a9a57763 SR |
765 | if (event->funcs->trace == NULL) |
766 | event->funcs->trace = trace_nop_print; | |
767 | if (event->funcs->raw == NULL) | |
768 | event->funcs->raw = trace_nop_print; | |
769 | if (event->funcs->hex == NULL) | |
770 | event->funcs->hex = trace_nop_print; | |
771 | if (event->funcs->binary == NULL) | |
772 | event->funcs->binary = trace_nop_print; | |
268ccda0 | 773 | |
f0868d1e SR |
774 | key = event->type & (EVENT_HASHSIZE - 1); |
775 | ||
4f535968 | 776 | hlist_add_head(&event->node, &event_hash[key]); |
f0868d1e SR |
777 | |
778 | ret = event->type; | |
779 | out: | |
52f6ad6d | 780 | up_write(&trace_event_sem); |
f0868d1e SR |
781 | |
782 | return ret; | |
783 | } | |
9023c930 | 784 | EXPORT_SYMBOL_GPL(register_trace_event); |
f0868d1e | 785 | |
110bf2b7 | 786 | /* |
52f6ad6d | 787 | * Used by module code with the trace_event_sem held for write. |
110bf2b7 | 788 | */ |
9023c930 | 789 | int __unregister_trace_event(struct trace_event *event) |
110bf2b7 SR |
790 | { |
791 | hlist_del(&event->node); | |
96e6122c | 792 | free_trace_event_type(event->type); |
110bf2b7 SR |
793 | return 0; |
794 | } | |
795 | ||
f0868d1e | 796 | /** |
9023c930 | 797 | * unregister_trace_event - remove a no longer used event |
f0868d1e SR |
798 | * @event: the event to remove |
799 | */ | |
9023c930 | 800 | int unregister_trace_event(struct trace_event *event) |
f0868d1e | 801 | { |
52f6ad6d | 802 | down_write(&trace_event_sem); |
9023c930 | 803 | __unregister_trace_event(event); |
52f6ad6d | 804 | up_write(&trace_event_sem); |
f0868d1e SR |
805 | |
806 | return 0; | |
807 | } | |
9023c930 | 808 | EXPORT_SYMBOL_GPL(unregister_trace_event); |
f633cef0 SR |
809 | |
810 | /* | |
811 | * Standard events | |
812 | */ | |
813 | ||
80a76994 SRG |
814 | static void print_array(struct trace_iterator *iter, void *pos, |
815 | struct ftrace_event_field *field) | |
816 | { | |
817 | int offset; | |
818 | int len; | |
819 | int i; | |
820 | ||
821 | offset = *(int *)pos & 0xffff; | |
822 | len = *(int *)pos >> 16; | |
823 | ||
824 | if (field) | |
c7bdb079 | 825 | offset += field->offset + sizeof(int); |
80a76994 | 826 | |
c7bdb079 | 827 | if (offset + len > iter->ent_size) { |
80a76994 SRG |
828 | trace_seq_puts(&iter->seq, "<OVERFLOW>"); |
829 | return; | |
830 | } | |
831 | ||
c7bdb079 BB |
832 | pos = (void *)iter->ent + offset; |
833 | ||
80a76994 SRG |
834 | for (i = 0; i < len; i++, pos++) { |
835 | if (i) | |
836 | trace_seq_putc(&iter->seq, ','); | |
837 | trace_seq_printf(&iter->seq, "%02x", *(unsigned char *)pos); | |
838 | } | |
839 | } | |
840 | ||
841 | static void print_fields(struct trace_iterator *iter, struct trace_event_call *call, | |
842 | struct list_head *head) | |
843 | { | |
844 | struct ftrace_event_field *field; | |
845 | int offset; | |
846 | int len; | |
847 | int ret; | |
848 | void *pos; | |
849 | ||
e70bb54d | 850 | list_for_each_entry_reverse(field, head, link) { |
80a76994 SRG |
851 | trace_seq_printf(&iter->seq, " %s=", field->name); |
852 | if (field->offset + field->size > iter->ent_size) { | |
853 | trace_seq_puts(&iter->seq, "<OVERFLOW>"); | |
854 | continue; | |
855 | } | |
856 | pos = (void *)iter->ent + field->offset; | |
857 | ||
858 | switch (field->filter_type) { | |
859 | case FILTER_COMM: | |
860 | case FILTER_STATIC_STRING: | |
861 | trace_seq_printf(&iter->seq, "%.*s", field->size, (char *)pos); | |
862 | break; | |
863 | case FILTER_RDYN_STRING: | |
864 | case FILTER_DYN_STRING: | |
865 | offset = *(int *)pos & 0xffff; | |
866 | len = *(int *)pos >> 16; | |
867 | ||
868 | if (field->filter_type == FILTER_RDYN_STRING) | |
c7bdb079 | 869 | offset += field->offset + sizeof(int); |
80a76994 | 870 | |
c7bdb079 | 871 | if (offset + len > iter->ent_size) { |
80a76994 SRG |
872 | trace_seq_puts(&iter->seq, "<OVERFLOW>"); |
873 | break; | |
874 | } | |
875 | pos = (void *)iter->ent + offset; | |
876 | trace_seq_printf(&iter->seq, "%.*s", len, (char *)pos); | |
877 | break; | |
878 | case FILTER_PTR_STRING: | |
879 | if (!iter->fmt_size) | |
880 | trace_iter_expand_format(iter); | |
881 | pos = *(void **)pos; | |
882 | ret = strncpy_from_kernel_nofault(iter->fmt, pos, | |
883 | iter->fmt_size); | |
884 | if (ret < 0) | |
885 | trace_seq_printf(&iter->seq, "(0x%px)", pos); | |
886 | else | |
887 | trace_seq_printf(&iter->seq, "(0x%px:%s)", | |
888 | pos, iter->fmt); | |
889 | break; | |
890 | case FILTER_TRACE_FN: | |
891 | pos = *(void **)pos; | |
892 | trace_seq_printf(&iter->seq, "%pS", pos); | |
893 | break; | |
894 | case FILTER_CPU: | |
895 | case FILTER_OTHER: | |
896 | switch (field->size) { | |
897 | case 1: | |
898 | if (isprint(*(char *)pos)) { | |
899 | trace_seq_printf(&iter->seq, "'%c'", | |
900 | *(unsigned char *)pos); | |
901 | } | |
902 | trace_seq_printf(&iter->seq, "(%d)", | |
903 | *(unsigned char *)pos); | |
904 | break; | |
905 | case 2: | |
906 | trace_seq_printf(&iter->seq, "0x%x (%d)", | |
907 | *(unsigned short *)pos, | |
908 | *(unsigned short *)pos); | |
909 | break; | |
910 | case 4: | |
911 | /* dynamic array info is 4 bytes */ | |
912 | if (strstr(field->type, "__data_loc")) { | |
913 | print_array(iter, pos, NULL); | |
914 | break; | |
915 | } | |
916 | ||
917 | if (strstr(field->type, "__rel_loc")) { | |
918 | print_array(iter, pos, field); | |
919 | break; | |
920 | } | |
921 | ||
922 | trace_seq_printf(&iter->seq, "0x%x (%d)", | |
923 | *(unsigned int *)pos, | |
924 | *(unsigned int *)pos); | |
925 | break; | |
926 | case 8: | |
927 | trace_seq_printf(&iter->seq, "0x%llx (%lld)", | |
928 | *(unsigned long long *)pos, | |
929 | *(unsigned long long *)pos); | |
930 | break; | |
931 | default: | |
932 | trace_seq_puts(&iter->seq, "<INVALID-SIZE>"); | |
933 | break; | |
934 | } | |
935 | break; | |
936 | default: | |
937 | trace_seq_puts(&iter->seq, "<INVALID-TYPE>"); | |
938 | } | |
939 | } | |
940 | trace_seq_putc(&iter->seq, '\n'); | |
941 | } | |
942 | ||
943 | enum print_line_t print_event_fields(struct trace_iterator *iter, | |
944 | struct trace_event *event) | |
945 | { | |
946 | struct trace_event_call *call; | |
947 | struct list_head *head; | |
948 | ||
949 | /* ftrace defined events have separate call structures */ | |
950 | if (event->type <= __TRACE_LAST_TYPE) { | |
951 | bool found = false; | |
952 | ||
953 | down_read(&trace_event_sem); | |
954 | list_for_each_entry(call, &ftrace_events, list) { | |
955 | if (call->event.type == event->type) { | |
956 | found = true; | |
957 | break; | |
958 | } | |
959 | /* No need to search all events */ | |
960 | if (call->event.type > __TRACE_LAST_TYPE) | |
961 | break; | |
962 | } | |
963 | up_read(&trace_event_sem); | |
964 | if (!found) { | |
965 | trace_seq_printf(&iter->seq, "UNKNOWN TYPE %d\n", event->type); | |
966 | goto out; | |
967 | } | |
968 | } else { | |
969 | call = container_of(event, struct trace_event_call, event); | |
970 | } | |
971 | head = trace_get_fields(call); | |
972 | ||
973 | trace_seq_printf(&iter->seq, "%s:", trace_event_name(call)); | |
974 | ||
975 | if (head && !list_empty(head)) | |
976 | print_fields(iter, call, head); | |
977 | else | |
978 | trace_seq_puts(&iter->seq, "No fields found\n"); | |
979 | ||
980 | out: | |
981 | return trace_handle_return(&iter->seq); | |
982 | } | |
983 | ||
a9a57763 SR |
984 | enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags, |
985 | struct trace_event *event) | |
f633cef0 | 986 | { |
19a7fe20 | 987 | trace_seq_printf(&iter->seq, "type: %d\n", iter->ent->type); |
ee5e51f5 | 988 | |
19a7fe20 | 989 | return trace_handle_return(&iter->seq); |
f633cef0 SR |
990 | } |
991 | ||
e1db6338 SRV |
992 | static void print_fn_trace(struct trace_seq *s, unsigned long ip, |
993 | unsigned long parent_ip, int flags) | |
994 | { | |
995 | seq_print_ip_sym(s, ip, flags); | |
996 | ||
997 | if ((flags & TRACE_ITER_PRINT_PARENT) && parent_ip) { | |
998 | trace_seq_puts(s, " <-"); | |
999 | seq_print_ip_sym(s, parent_ip, flags); | |
1000 | } | |
1001 | } | |
1002 | ||
f633cef0 | 1003 | /* TRACE_FN */ |
a9a57763 SR |
1004 | static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags, |
1005 | struct trace_event *event) | |
f633cef0 SR |
1006 | { |
1007 | struct ftrace_entry *field; | |
2c9b238e | 1008 | struct trace_seq *s = &iter->seq; |
f633cef0 | 1009 | |
2c9b238e | 1010 | trace_assign_type(field, iter->ent); |
f633cef0 | 1011 | |
e1db6338 | 1012 | print_fn_trace(s, field->ip, field->parent_ip, flags); |
19a7fe20 | 1013 | trace_seq_putc(s, '\n'); |
f633cef0 | 1014 | |
19a7fe20 | 1015 | return trace_handle_return(s); |
f633cef0 SR |
1016 | } |
1017 | ||
a9a57763 SR |
1018 | static enum print_line_t trace_fn_raw(struct trace_iterator *iter, int flags, |
1019 | struct trace_event *event) | |
f633cef0 SR |
1020 | { |
1021 | struct ftrace_entry *field; | |
1022 | ||
2c9b238e | 1023 | trace_assign_type(field, iter->ent); |
f633cef0 | 1024 | |
19a7fe20 SRRH |
1025 | trace_seq_printf(&iter->seq, "%lx %lx\n", |
1026 | field->ip, | |
1027 | field->parent_ip); | |
f633cef0 | 1028 | |
19a7fe20 | 1029 | return trace_handle_return(&iter->seq); |
f633cef0 SR |
1030 | } |
1031 | ||
a9a57763 SR |
1032 | static enum print_line_t trace_fn_hex(struct trace_iterator *iter, int flags, |
1033 | struct trace_event *event) | |
f633cef0 SR |
1034 | { |
1035 | struct ftrace_entry *field; | |
2c9b238e | 1036 | struct trace_seq *s = &iter->seq; |
f633cef0 | 1037 | |
2c9b238e | 1038 | trace_assign_type(field, iter->ent); |
f633cef0 | 1039 | |
19a7fe20 SRRH |
1040 | SEQ_PUT_HEX_FIELD(s, field->ip); |
1041 | SEQ_PUT_HEX_FIELD(s, field->parent_ip); | |
f633cef0 | 1042 | |
19a7fe20 | 1043 | return trace_handle_return(s); |
f633cef0 SR |
1044 | } |
1045 | ||
a9a57763 SR |
1046 | static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags, |
1047 | struct trace_event *event) | |
f633cef0 SR |
1048 | { |
1049 | struct ftrace_entry *field; | |
2c9b238e | 1050 | struct trace_seq *s = &iter->seq; |
f633cef0 | 1051 | |
2c9b238e | 1052 | trace_assign_type(field, iter->ent); |
f633cef0 | 1053 | |
19a7fe20 SRRH |
1054 | SEQ_PUT_FIELD(s, field->ip); |
1055 | SEQ_PUT_FIELD(s, field->parent_ip); | |
f633cef0 | 1056 | |
19a7fe20 | 1057 | return trace_handle_return(s); |
f633cef0 SR |
1058 | } |
1059 | ||
a9a57763 | 1060 | static struct trace_event_functions trace_fn_funcs = { |
f633cef0 | 1061 | .trace = trace_fn_trace, |
f633cef0 SR |
1062 | .raw = trace_fn_raw, |
1063 | .hex = trace_fn_hex, | |
1064 | .binary = trace_fn_bin, | |
1065 | }; | |
1066 | ||
a9a57763 SR |
1067 | static struct trace_event trace_fn_event = { |
1068 | .type = TRACE_FN, | |
1069 | .funcs = &trace_fn_funcs, | |
1070 | }; | |
1071 | ||
f633cef0 | 1072 | /* TRACE_CTX an TRACE_WAKE */ |
ae7462b4 ACM |
1073 | static enum print_line_t trace_ctxwake_print(struct trace_iterator *iter, |
1074 | char *delim) | |
f633cef0 SR |
1075 | { |
1076 | struct ctx_switch_entry *field; | |
4ca53085 | 1077 | char comm[TASK_COMM_LEN]; |
f633cef0 SR |
1078 | int S, T; |
1079 | ||
4ca53085 | 1080 | |
2c9b238e | 1081 | trace_assign_type(field, iter->ent); |
f633cef0 | 1082 | |
1d48b080 PZ |
1083 | T = task_index_to_char(field->next_state); |
1084 | S = task_index_to_char(field->prev_state); | |
4ca53085 | 1085 | trace_find_cmdline(field->next_pid, comm); |
19a7fe20 | 1086 | trace_seq_printf(&iter->seq, |
795d6379 | 1087 | " %7d:%3d:%c %s [%03d] %7d:%3d:%c %s\n", |
19a7fe20 SRRH |
1088 | field->prev_pid, |
1089 | field->prev_prio, | |
1090 | S, delim, | |
1091 | field->next_cpu, | |
1092 | field->next_pid, | |
1093 | field->next_prio, | |
1094 | T, comm); | |
1095 | ||
1096 | return trace_handle_return(&iter->seq); | |
f633cef0 SR |
1097 | } |
1098 | ||
a9a57763 SR |
1099 | static enum print_line_t trace_ctx_print(struct trace_iterator *iter, int flags, |
1100 | struct trace_event *event) | |
f633cef0 | 1101 | { |
2c9b238e | 1102 | return trace_ctxwake_print(iter, "==>"); |
f633cef0 SR |
1103 | } |
1104 | ||
ae7462b4 | 1105 | static enum print_line_t trace_wake_print(struct trace_iterator *iter, |
a9a57763 | 1106 | int flags, struct trace_event *event) |
f633cef0 | 1107 | { |
2c9b238e | 1108 | return trace_ctxwake_print(iter, " +"); |
f633cef0 SR |
1109 | } |
1110 | ||
2c9b238e | 1111 | static int trace_ctxwake_raw(struct trace_iterator *iter, char S) |
f633cef0 SR |
1112 | { |
1113 | struct ctx_switch_entry *field; | |
1114 | int T; | |
1115 | ||
2c9b238e | 1116 | trace_assign_type(field, iter->ent); |
f633cef0 SR |
1117 | |
1118 | if (!S) | |
1d48b080 PZ |
1119 | S = task_index_to_char(field->prev_state); |
1120 | T = task_index_to_char(field->next_state); | |
19a7fe20 SRRH |
1121 | trace_seq_printf(&iter->seq, "%d %d %c %d %d %d %c\n", |
1122 | field->prev_pid, | |
1123 | field->prev_prio, | |
1124 | S, | |
1125 | field->next_cpu, | |
1126 | field->next_pid, | |
1127 | field->next_prio, | |
1128 | T); | |
1129 | ||
1130 | return trace_handle_return(&iter->seq); | |
f633cef0 SR |
1131 | } |
1132 | ||
a9a57763 SR |
1133 | static enum print_line_t trace_ctx_raw(struct trace_iterator *iter, int flags, |
1134 | struct trace_event *event) | |
f633cef0 | 1135 | { |
2c9b238e | 1136 | return trace_ctxwake_raw(iter, 0); |
f633cef0 SR |
1137 | } |
1138 | ||
a9a57763 SR |
1139 | static enum print_line_t trace_wake_raw(struct trace_iterator *iter, int flags, |
1140 | struct trace_event *event) | |
f633cef0 | 1141 | { |
2c9b238e | 1142 | return trace_ctxwake_raw(iter, '+'); |
f633cef0 SR |
1143 | } |
1144 | ||
1145 | ||
2c9b238e | 1146 | static int trace_ctxwake_hex(struct trace_iterator *iter, char S) |
f633cef0 SR |
1147 | { |
1148 | struct ctx_switch_entry *field; | |
2c9b238e | 1149 | struct trace_seq *s = &iter->seq; |
f633cef0 SR |
1150 | int T; |
1151 | ||
2c9b238e | 1152 | trace_assign_type(field, iter->ent); |
f633cef0 SR |
1153 | |
1154 | if (!S) | |
1d48b080 PZ |
1155 | S = task_index_to_char(field->prev_state); |
1156 | T = task_index_to_char(field->next_state); | |
f633cef0 | 1157 | |
19a7fe20 SRRH |
1158 | SEQ_PUT_HEX_FIELD(s, field->prev_pid); |
1159 | SEQ_PUT_HEX_FIELD(s, field->prev_prio); | |
1160 | SEQ_PUT_HEX_FIELD(s, S); | |
1161 | SEQ_PUT_HEX_FIELD(s, field->next_cpu); | |
1162 | SEQ_PUT_HEX_FIELD(s, field->next_pid); | |
1163 | SEQ_PUT_HEX_FIELD(s, field->next_prio); | |
1164 | SEQ_PUT_HEX_FIELD(s, T); | |
f633cef0 | 1165 | |
19a7fe20 | 1166 | return trace_handle_return(s); |
f633cef0 SR |
1167 | } |
1168 | ||
a9a57763 SR |
1169 | static enum print_line_t trace_ctx_hex(struct trace_iterator *iter, int flags, |
1170 | struct trace_event *event) | |
f633cef0 | 1171 | { |
2c9b238e | 1172 | return trace_ctxwake_hex(iter, 0); |
f633cef0 SR |
1173 | } |
1174 | ||
a9a57763 SR |
1175 | static enum print_line_t trace_wake_hex(struct trace_iterator *iter, int flags, |
1176 | struct trace_event *event) | |
f633cef0 | 1177 | { |
2c9b238e | 1178 | return trace_ctxwake_hex(iter, '+'); |
f633cef0 SR |
1179 | } |
1180 | ||
ae7462b4 | 1181 | static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter, |
a9a57763 | 1182 | int flags, struct trace_event *event) |
f633cef0 SR |
1183 | { |
1184 | struct ctx_switch_entry *field; | |
2c9b238e | 1185 | struct trace_seq *s = &iter->seq; |
f633cef0 | 1186 | |
2c9b238e | 1187 | trace_assign_type(field, iter->ent); |
f633cef0 | 1188 | |
19a7fe20 SRRH |
1189 | SEQ_PUT_FIELD(s, field->prev_pid); |
1190 | SEQ_PUT_FIELD(s, field->prev_prio); | |
1191 | SEQ_PUT_FIELD(s, field->prev_state); | |
1192 | SEQ_PUT_FIELD(s, field->next_cpu); | |
1193 | SEQ_PUT_FIELD(s, field->next_pid); | |
1194 | SEQ_PUT_FIELD(s, field->next_prio); | |
1195 | SEQ_PUT_FIELD(s, field->next_state); | |
f633cef0 | 1196 | |
19a7fe20 | 1197 | return trace_handle_return(s); |
f633cef0 SR |
1198 | } |
1199 | ||
a9a57763 | 1200 | static struct trace_event_functions trace_ctx_funcs = { |
f633cef0 | 1201 | .trace = trace_ctx_print, |
f633cef0 SR |
1202 | .raw = trace_ctx_raw, |
1203 | .hex = trace_ctx_hex, | |
1204 | .binary = trace_ctxwake_bin, | |
1205 | }; | |
1206 | ||
a9a57763 SR |
1207 | static struct trace_event trace_ctx_event = { |
1208 | .type = TRACE_CTX, | |
1209 | .funcs = &trace_ctx_funcs, | |
1210 | }; | |
1211 | ||
1212 | static struct trace_event_functions trace_wake_funcs = { | |
f633cef0 | 1213 | .trace = trace_wake_print, |
f633cef0 SR |
1214 | .raw = trace_wake_raw, |
1215 | .hex = trace_wake_hex, | |
1216 | .binary = trace_ctxwake_bin, | |
1217 | }; | |
1218 | ||
a9a57763 SR |
1219 | static struct trace_event trace_wake_event = { |
1220 | .type = TRACE_WAKE, | |
1221 | .funcs = &trace_wake_funcs, | |
1222 | }; | |
1223 | ||
f633cef0 SR |
1224 | /* TRACE_STACK */ |
1225 | ||
ae7462b4 | 1226 | static enum print_line_t trace_stack_print(struct trace_iterator *iter, |
a9a57763 | 1227 | int flags, struct trace_event *event) |
f633cef0 SR |
1228 | { |
1229 | struct stack_entry *field; | |
2c9b238e | 1230 | struct trace_seq *s = &iter->seq; |
4a9bd3f1 SR |
1231 | unsigned long *p; |
1232 | unsigned long *end; | |
f633cef0 | 1233 | |
2c9b238e | 1234 | trace_assign_type(field, iter->ent); |
4a9bd3f1 | 1235 | end = (unsigned long *)((long)iter->ent + iter->ent_size); |
f633cef0 | 1236 | |
19a7fe20 | 1237 | trace_seq_puts(s, "<stack trace>\n"); |
4a9bd3f1 | 1238 | |
becf33f6 | 1239 | for (p = field->caller; p && p < end && *p != ULONG_MAX; p++) { |
f633cef0 | 1240 | |
19a7fe20 SRRH |
1241 | if (trace_seq_has_overflowed(s)) |
1242 | break; | |
f633cef0 | 1243 | |
19a7fe20 SRRH |
1244 | trace_seq_puts(s, " => "); |
1245 | seq_print_ip_sym(s, *p, flags); | |
1246 | trace_seq_putc(s, '\n'); | |
1247 | } | |
f633cef0 | 1248 | |
19a7fe20 | 1249 | return trace_handle_return(s); |
f633cef0 SR |
1250 | } |
1251 | ||
a9a57763 | 1252 | static struct trace_event_functions trace_stack_funcs = { |
f633cef0 | 1253 | .trace = trace_stack_print, |
f633cef0 SR |
1254 | }; |
1255 | ||
a9a57763 SR |
1256 | static struct trace_event trace_stack_event = { |
1257 | .type = TRACE_STACK, | |
1258 | .funcs = &trace_stack_funcs, | |
1259 | }; | |
1260 | ||
f633cef0 | 1261 | /* TRACE_USER_STACK */ |
ae7462b4 | 1262 | static enum print_line_t trace_user_stack_print(struct trace_iterator *iter, |
a9a57763 | 1263 | int flags, struct trace_event *event) |
f633cef0 | 1264 | { |
983f938a | 1265 | struct trace_array *tr = iter->tr; |
f633cef0 | 1266 | struct userstack_entry *field; |
2c9b238e | 1267 | struct trace_seq *s = &iter->seq; |
6b1032d5 SRRH |
1268 | struct mm_struct *mm = NULL; |
1269 | unsigned int i; | |
f633cef0 | 1270 | |
2c9b238e | 1271 | trace_assign_type(field, iter->ent); |
f633cef0 | 1272 | |
19a7fe20 | 1273 | trace_seq_puts(s, "<user stack trace>\n"); |
6b1032d5 | 1274 | |
983f938a | 1275 | if (tr->trace_flags & TRACE_ITER_SYM_USEROBJ) { |
6b1032d5 SRRH |
1276 | struct task_struct *task; |
1277 | /* | |
1278 | * we do the lookup on the thread group leader, | |
1279 | * since individual threads might have already quit! | |
1280 | */ | |
1281 | rcu_read_lock(); | |
1282 | task = find_task_by_vpid(field->tgid); | |
1283 | if (task) | |
1284 | mm = get_task_mm(task); | |
1285 | rcu_read_unlock(); | |
1286 | } | |
1287 | ||
1288 | for (i = 0; i < FTRACE_STACK_ENTRIES; i++) { | |
1289 | unsigned long ip = field->caller[i]; | |
1290 | ||
6d54ceb5 | 1291 | if (!ip || trace_seq_has_overflowed(s)) |
6b1032d5 SRRH |
1292 | break; |
1293 | ||
1294 | trace_seq_puts(s, " => "); | |
6b1032d5 SRRH |
1295 | seq_print_user_ip(s, mm, ip, flags); |
1296 | trace_seq_putc(s, '\n'); | |
1297 | } | |
1298 | ||
1299 | if (mm) | |
1300 | mmput(mm); | |
f633cef0 | 1301 | |
19a7fe20 | 1302 | return trace_handle_return(s); |
f633cef0 SR |
1303 | } |
1304 | ||
a9a57763 | 1305 | static struct trace_event_functions trace_user_stack_funcs = { |
f633cef0 | 1306 | .trace = trace_user_stack_print, |
f633cef0 SR |
1307 | }; |
1308 | ||
a9a57763 SR |
1309 | static struct trace_event trace_user_stack_event = { |
1310 | .type = TRACE_USER_STACK, | |
1311 | .funcs = &trace_user_stack_funcs, | |
1312 | }; | |
1313 | ||
e7c15cd8 SRRH |
1314 | /* TRACE_HWLAT */ |
1315 | static enum print_line_t | |
1316 | trace_hwlat_print(struct trace_iterator *iter, int flags, | |
1317 | struct trace_event *event) | |
1318 | { | |
1319 | struct trace_entry *entry = iter->ent; | |
1320 | struct trace_seq *s = &iter->seq; | |
1321 | struct hwlat_entry *field; | |
1322 | ||
1323 | trace_assign_type(field, entry); | |
1324 | ||
b396bfde | 1325 | trace_seq_printf(s, "#%-5u inner/outer(us): %4llu/%-5llu ts:%lld.%09ld count:%d", |
e7c15cd8 SRRH |
1326 | field->seqnum, |
1327 | field->duration, | |
1328 | field->outer_duration, | |
51aad0ae | 1329 | (long long)field->timestamp.tv_sec, |
b396bfde | 1330 | field->timestamp.tv_nsec, field->count); |
e7c15cd8 | 1331 | |
7b2c8625 SRRH |
1332 | if (field->nmi_count) { |
1333 | /* | |
1334 | * The generic sched_clock() is not NMI safe, thus | |
1335 | * we only record the count and not the time. | |
1336 | */ | |
1337 | if (!IS_ENABLED(CONFIG_GENERIC_SCHED_CLOCK)) | |
1338 | trace_seq_printf(s, " nmi-total:%llu", | |
1339 | field->nmi_total_ts); | |
1340 | trace_seq_printf(s, " nmi-count:%u", | |
1341 | field->nmi_count); | |
1342 | } | |
1343 | ||
1344 | trace_seq_putc(s, '\n'); | |
1345 | ||
e7c15cd8 SRRH |
1346 | return trace_handle_return(s); |
1347 | } | |
1348 | ||
e7c15cd8 SRRH |
1349 | static enum print_line_t |
1350 | trace_hwlat_raw(struct trace_iterator *iter, int flags, | |
1351 | struct trace_event *event) | |
1352 | { | |
1353 | struct hwlat_entry *field; | |
1354 | struct trace_seq *s = &iter->seq; | |
1355 | ||
1356 | trace_assign_type(field, iter->ent); | |
1357 | ||
51aad0ae | 1358 | trace_seq_printf(s, "%llu %lld %lld %09ld %u\n", |
e7c15cd8 SRRH |
1359 | field->duration, |
1360 | field->outer_duration, | |
51aad0ae | 1361 | (long long)field->timestamp.tv_sec, |
e7c15cd8 SRRH |
1362 | field->timestamp.tv_nsec, |
1363 | field->seqnum); | |
1364 | ||
1365 | return trace_handle_return(s); | |
1366 | } | |
1367 | ||
1368 | static struct trace_event_functions trace_hwlat_funcs = { | |
1369 | .trace = trace_hwlat_print, | |
1370 | .raw = trace_hwlat_raw, | |
1371 | }; | |
1372 | ||
1373 | static struct trace_event trace_hwlat_event = { | |
1374 | .type = TRACE_HWLAT, | |
1375 | .funcs = &trace_hwlat_funcs, | |
1376 | }; | |
1377 | ||
bce29ac9 DBO |
1378 | /* TRACE_OSNOISE */ |
1379 | static enum print_line_t | |
1380 | trace_osnoise_print(struct trace_iterator *iter, int flags, | |
1381 | struct trace_event *event) | |
1382 | { | |
1383 | struct trace_entry *entry = iter->ent; | |
1384 | struct trace_seq *s = &iter->seq; | |
1385 | struct osnoise_entry *field; | |
1386 | u64 ratio, ratio_dec; | |
1387 | u64 net_runtime; | |
1388 | ||
1389 | trace_assign_type(field, entry); | |
1390 | ||
1391 | /* | |
1392 | * compute the available % of cpu time. | |
1393 | */ | |
1394 | net_runtime = field->runtime - field->noise; | |
1395 | ratio = net_runtime * 10000000; | |
1396 | do_div(ratio, field->runtime); | |
1397 | ratio_dec = do_div(ratio, 100000); | |
1398 | ||
1399 | trace_seq_printf(s, "%llu %10llu %3llu.%05llu %7llu", | |
1400 | field->runtime, | |
1401 | field->noise, | |
1402 | ratio, ratio_dec, | |
1403 | field->max_sample); | |
1404 | ||
1405 | trace_seq_printf(s, " %6u", field->hw_count); | |
1406 | trace_seq_printf(s, " %6u", field->nmi_count); | |
1407 | trace_seq_printf(s, " %6u", field->irq_count); | |
1408 | trace_seq_printf(s, " %6u", field->softirq_count); | |
1409 | trace_seq_printf(s, " %6u", field->thread_count); | |
1410 | ||
1411 | trace_seq_putc(s, '\n'); | |
1412 | ||
1413 | return trace_handle_return(s); | |
1414 | } | |
1415 | ||
1416 | static enum print_line_t | |
1417 | trace_osnoise_raw(struct trace_iterator *iter, int flags, | |
1418 | struct trace_event *event) | |
1419 | { | |
1420 | struct osnoise_entry *field; | |
1421 | struct trace_seq *s = &iter->seq; | |
1422 | ||
1423 | trace_assign_type(field, iter->ent); | |
1424 | ||
1425 | trace_seq_printf(s, "%lld %llu %llu %u %u %u %u %u\n", | |
1426 | field->runtime, | |
1427 | field->noise, | |
1428 | field->max_sample, | |
1429 | field->hw_count, | |
1430 | field->nmi_count, | |
1431 | field->irq_count, | |
1432 | field->softirq_count, | |
1433 | field->thread_count); | |
1434 | ||
1435 | return trace_handle_return(s); | |
1436 | } | |
1437 | ||
1438 | static struct trace_event_functions trace_osnoise_funcs = { | |
1439 | .trace = trace_osnoise_print, | |
1440 | .raw = trace_osnoise_raw, | |
1441 | }; | |
1442 | ||
1443 | static struct trace_event trace_osnoise_event = { | |
1444 | .type = TRACE_OSNOISE, | |
1445 | .funcs = &trace_osnoise_funcs, | |
1446 | }; | |
1447 | ||
a955d7ea | 1448 | /* TRACE_TIMERLAT */ |
e88ed227 DBO |
1449 | |
1450 | static char *timerlat_lat_context[] = {"irq", "thread", "user-ret"}; | |
a955d7ea DBO |
1451 | static enum print_line_t |
1452 | trace_timerlat_print(struct trace_iterator *iter, int flags, | |
1453 | struct trace_event *event) | |
1454 | { | |
1455 | struct trace_entry *entry = iter->ent; | |
1456 | struct trace_seq *s = &iter->seq; | |
1457 | struct timerlat_entry *field; | |
1458 | ||
1459 | trace_assign_type(field, entry); | |
1460 | ||
1461 | trace_seq_printf(s, "#%-5u context %6s timer_latency %9llu ns\n", | |
1462 | field->seqnum, | |
e88ed227 | 1463 | timerlat_lat_context[field->context], |
a955d7ea DBO |
1464 | field->timer_latency); |
1465 | ||
1466 | return trace_handle_return(s); | |
1467 | } | |
1468 | ||
1469 | static enum print_line_t | |
1470 | trace_timerlat_raw(struct trace_iterator *iter, int flags, | |
1471 | struct trace_event *event) | |
1472 | { | |
1473 | struct timerlat_entry *field; | |
1474 | struct trace_seq *s = &iter->seq; | |
1475 | ||
1476 | trace_assign_type(field, iter->ent); | |
1477 | ||
1478 | trace_seq_printf(s, "%u %d %llu\n", | |
1479 | field->seqnum, | |
1480 | field->context, | |
1481 | field->timer_latency); | |
1482 | ||
1483 | return trace_handle_return(s); | |
1484 | } | |
1485 | ||
1486 | static struct trace_event_functions trace_timerlat_funcs = { | |
1487 | .trace = trace_timerlat_print, | |
1488 | .raw = trace_timerlat_raw, | |
1489 | }; | |
1490 | ||
1491 | static struct trace_event trace_timerlat_event = { | |
1492 | .type = TRACE_TIMERLAT, | |
1493 | .funcs = &trace_timerlat_funcs, | |
1494 | }; | |
1495 | ||
09ae7234 SRRH |
1496 | /* TRACE_BPUTS */ |
1497 | static enum print_line_t | |
1498 | trace_bputs_print(struct trace_iterator *iter, int flags, | |
1499 | struct trace_event *event) | |
1500 | { | |
1501 | struct trace_entry *entry = iter->ent; | |
1502 | struct trace_seq *s = &iter->seq; | |
1503 | struct bputs_entry *field; | |
1504 | ||
1505 | trace_assign_type(field, entry); | |
1506 | ||
19a7fe20 SRRH |
1507 | seq_print_ip_sym(s, field->ip, flags); |
1508 | trace_seq_puts(s, ": "); | |
1509 | trace_seq_puts(s, field->str); | |
09ae7234 | 1510 | |
19a7fe20 | 1511 | return trace_handle_return(s); |
09ae7234 SRRH |
1512 | } |
1513 | ||
1514 | ||
1515 | static enum print_line_t | |
1516 | trace_bputs_raw(struct trace_iterator *iter, int flags, | |
1517 | struct trace_event *event) | |
1518 | { | |
1519 | struct bputs_entry *field; | |
1520 | struct trace_seq *s = &iter->seq; | |
1521 | ||
1522 | trace_assign_type(field, iter->ent); | |
1523 | ||
19a7fe20 SRRH |
1524 | trace_seq_printf(s, ": %lx : ", field->ip); |
1525 | trace_seq_puts(s, field->str); | |
09ae7234 | 1526 | |
19a7fe20 | 1527 | return trace_handle_return(s); |
09ae7234 SRRH |
1528 | } |
1529 | ||
1530 | static struct trace_event_functions trace_bputs_funcs = { | |
1531 | .trace = trace_bputs_print, | |
1532 | .raw = trace_bputs_raw, | |
1533 | }; | |
1534 | ||
1535 | static struct trace_event trace_bputs_event = { | |
1536 | .type = TRACE_BPUTS, | |
1537 | .funcs = &trace_bputs_funcs, | |
1538 | }; | |
1539 | ||
48ead020 | 1540 | /* TRACE_BPRINT */ |
1427cdf0 | 1541 | static enum print_line_t |
a9a57763 SR |
1542 | trace_bprint_print(struct trace_iterator *iter, int flags, |
1543 | struct trace_event *event) | |
1427cdf0 LJ |
1544 | { |
1545 | struct trace_entry *entry = iter->ent; | |
1546 | struct trace_seq *s = &iter->seq; | |
48ead020 | 1547 | struct bprint_entry *field; |
1427cdf0 LJ |
1548 | |
1549 | trace_assign_type(field, entry); | |
1550 | ||
19a7fe20 SRRH |
1551 | seq_print_ip_sym(s, field->ip, flags); |
1552 | trace_seq_puts(s, ": "); | |
1553 | trace_seq_bprintf(s, field->fmt, field->buf); | |
1427cdf0 | 1554 | |
19a7fe20 | 1555 | return trace_handle_return(s); |
1427cdf0 LJ |
1556 | } |
1557 | ||
769b0441 | 1558 | |
48ead020 | 1559 | static enum print_line_t |
a9a57763 SR |
1560 | trace_bprint_raw(struct trace_iterator *iter, int flags, |
1561 | struct trace_event *event) | |
1427cdf0 | 1562 | { |
48ead020 | 1563 | struct bprint_entry *field; |
1427cdf0 | 1564 | struct trace_seq *s = &iter->seq; |
1427cdf0 | 1565 | |
769b0441 | 1566 | trace_assign_type(field, iter->ent); |
1427cdf0 | 1567 | |
19a7fe20 SRRH |
1568 | trace_seq_printf(s, ": %lx : ", field->ip); |
1569 | trace_seq_bprintf(s, field->fmt, field->buf); | |
1427cdf0 | 1570 | |
19a7fe20 | 1571 | return trace_handle_return(s); |
1427cdf0 LJ |
1572 | } |
1573 | ||
a9a57763 SR |
1574 | static struct trace_event_functions trace_bprint_funcs = { |
1575 | .trace = trace_bprint_print, | |
1576 | .raw = trace_bprint_raw, | |
1577 | }; | |
769b0441 | 1578 | |
48ead020 FW |
1579 | static struct trace_event trace_bprint_event = { |
1580 | .type = TRACE_BPRINT, | |
a9a57763 | 1581 | .funcs = &trace_bprint_funcs, |
48ead020 FW |
1582 | }; |
1583 | ||
1584 | /* TRACE_PRINT */ | |
1585 | static enum print_line_t trace_print_print(struct trace_iterator *iter, | |
a9a57763 | 1586 | int flags, struct trace_event *event) |
48ead020 FW |
1587 | { |
1588 | struct print_entry *field; | |
1589 | struct trace_seq *s = &iter->seq; | |
60be76ee | 1590 | int max = iter->ent_size - offsetof(struct print_entry, buf); |
48ead020 FW |
1591 | |
1592 | trace_assign_type(field, iter->ent); | |
1593 | ||
19a7fe20 | 1594 | seq_print_ip_sym(s, field->ip, flags); |
60be76ee | 1595 | trace_seq_printf(s, ": %.*s", max, field->buf); |
48ead020 | 1596 | |
19a7fe20 | 1597 | return trace_handle_return(s); |
48ead020 FW |
1598 | } |
1599 | ||
a9a57763 SR |
1600 | static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags, |
1601 | struct trace_event *event) | |
48ead020 FW |
1602 | { |
1603 | struct print_entry *field; | |
60be76ee | 1604 | int max = iter->ent_size - offsetof(struct print_entry, buf); |
48ead020 FW |
1605 | |
1606 | trace_assign_type(field, iter->ent); | |
1607 | ||
60be76ee | 1608 | trace_seq_printf(&iter->seq, "# %lx %.*s", field->ip, max, field->buf); |
48ead020 | 1609 | |
19a7fe20 | 1610 | return trace_handle_return(&iter->seq); |
48ead020 FW |
1611 | } |
1612 | ||
a9a57763 | 1613 | static struct trace_event_functions trace_print_funcs = { |
769b0441 FW |
1614 | .trace = trace_print_print, |
1615 | .raw = trace_print_raw, | |
1427cdf0 LJ |
1616 | }; |
1617 | ||
a9a57763 SR |
1618 | static struct trace_event trace_print_event = { |
1619 | .type = TRACE_PRINT, | |
1620 | .funcs = &trace_print_funcs, | |
1621 | }; | |
1622 | ||
fa32e855 SR |
1623 | static enum print_line_t trace_raw_data(struct trace_iterator *iter, int flags, |
1624 | struct trace_event *event) | |
1625 | { | |
1626 | struct raw_data_entry *field; | |
1627 | int i; | |
1628 | ||
1629 | trace_assign_type(field, iter->ent); | |
1630 | ||
1631 | trace_seq_printf(&iter->seq, "# %x buf:", field->id); | |
1632 | ||
1633 | for (i = 0; i < iter->ent_size - offsetof(struct raw_data_entry, buf); i++) | |
1634 | trace_seq_printf(&iter->seq, " %02x", | |
1635 | (unsigned char)field->buf[i]); | |
1636 | ||
1637 | trace_seq_putc(&iter->seq, '\n'); | |
1638 | ||
1639 | return trace_handle_return(&iter->seq); | |
1640 | } | |
1641 | ||
1642 | static struct trace_event_functions trace_raw_data_funcs = { | |
1643 | .trace = trace_raw_data, | |
1644 | .raw = trace_raw_data, | |
1645 | }; | |
1646 | ||
1647 | static struct trace_event trace_raw_data_event = { | |
1648 | .type = TRACE_RAW_DATA, | |
1649 | .funcs = &trace_raw_data_funcs, | |
1650 | }; | |
1651 | ||
f689e4f2 YKV |
1652 | static enum print_line_t |
1653 | trace_func_repeats_raw(struct trace_iterator *iter, int flags, | |
1654 | struct trace_event *event) | |
1655 | { | |
1656 | struct func_repeats_entry *field; | |
1657 | struct trace_seq *s = &iter->seq; | |
1658 | ||
1659 | trace_assign_type(field, iter->ent); | |
1660 | ||
1661 | trace_seq_printf(s, "%lu %lu %u %llu\n", | |
1662 | field->ip, | |
1663 | field->parent_ip, | |
1664 | field->count, | |
1665 | FUNC_REPEATS_GET_DELTA_TS(field)); | |
1666 | ||
1667 | return trace_handle_return(s); | |
1668 | } | |
1669 | ||
1670 | static enum print_line_t | |
1671 | trace_func_repeats_print(struct trace_iterator *iter, int flags, | |
1672 | struct trace_event *event) | |
1673 | { | |
1674 | struct func_repeats_entry *field; | |
1675 | struct trace_seq *s = &iter->seq; | |
1676 | ||
1677 | trace_assign_type(field, iter->ent); | |
1678 | ||
e1db6338 | 1679 | print_fn_trace(s, field->ip, field->parent_ip, flags); |
f689e4f2 YKV |
1680 | trace_seq_printf(s, " (repeats: %u, last_ts:", field->count); |
1681 | trace_print_time(s, iter, | |
1682 | iter->ts - FUNC_REPEATS_GET_DELTA_TS(field)); | |
1683 | trace_seq_puts(s, ")\n"); | |
1684 | ||
1685 | return trace_handle_return(s); | |
1686 | } | |
1687 | ||
1688 | static struct trace_event_functions trace_func_repeats_funcs = { | |
1689 | .trace = trace_func_repeats_print, | |
1690 | .raw = trace_func_repeats_raw, | |
1691 | }; | |
1692 | ||
1693 | static struct trace_event trace_func_repeats_event = { | |
1694 | .type = TRACE_FUNC_REPEATS, | |
1695 | .funcs = &trace_func_repeats_funcs, | |
1696 | }; | |
48ead020 | 1697 | |
f633cef0 SR |
1698 | static struct trace_event *events[] __initdata = { |
1699 | &trace_fn_event, | |
1700 | &trace_ctx_event, | |
1701 | &trace_wake_event, | |
f633cef0 SR |
1702 | &trace_stack_event, |
1703 | &trace_user_stack_event, | |
09ae7234 | 1704 | &trace_bputs_event, |
48ead020 | 1705 | &trace_bprint_event, |
f633cef0 | 1706 | &trace_print_event, |
e7c15cd8 | 1707 | &trace_hwlat_event, |
bce29ac9 | 1708 | &trace_osnoise_event, |
a955d7ea | 1709 | &trace_timerlat_event, |
fa32e855 | 1710 | &trace_raw_data_event, |
f689e4f2 | 1711 | &trace_func_repeats_event, |
f633cef0 SR |
1712 | NULL |
1713 | }; | |
1714 | ||
3bb06eb6 | 1715 | __init int init_events(void) |
f633cef0 SR |
1716 | { |
1717 | struct trace_event *event; | |
1718 | int i, ret; | |
1719 | ||
1720 | for (i = 0; events[i]; i++) { | |
1721 | event = events[i]; | |
9023c930 | 1722 | ret = register_trace_event(event); |
4ee51101 | 1723 | WARN_ONCE(!ret, "event %d failed to register", event->type); |
f633cef0 SR |
1724 | } |
1725 | ||
1726 | return 0; | |
1727 | } |