Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 1 | /* |
| 2 | * trace_output.c |
| 3 | * |
| 4 | * Copyright (C) 2008 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/mutex.h> |
| 10 | #include <linux/ftrace.h> |
| 11 | |
| 12 | #include "trace_output.h" |
| 13 | |
| 14 | /* must be a power of 2 */ |
| 15 | #define EVENT_HASHSIZE 128 |
| 16 | |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 17 | DECLARE_RWSEM(trace_event_sem); |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 18 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 19 | static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly; |
| 20 | |
| 21 | static int next_event_type = __TRACE_LAST_TYPE + 1; |
| 22 | |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 23 | enum print_line_t trace_print_bputs_msg_only(struct trace_iterator *iter) |
| 24 | { |
| 25 | struct trace_seq *s = &iter->seq; |
| 26 | struct trace_entry *entry = iter->ent; |
| 27 | struct bputs_entry *field; |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 28 | |
| 29 | trace_assign_type(field, entry); |
| 30 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 31 | trace_seq_puts(s, field->str); |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 32 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 33 | return trace_handle_return(s); |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 34 | } |
| 35 | |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 36 | enum print_line_t trace_print_bprintk_msg_only(struct trace_iterator *iter) |
| 37 | { |
| 38 | struct trace_seq *s = &iter->seq; |
| 39 | struct trace_entry *entry = iter->ent; |
| 40 | struct bprint_entry *field; |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 41 | |
| 42 | trace_assign_type(field, entry); |
| 43 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 44 | trace_seq_bprintf(s, field->fmt, field->buf); |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 45 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 46 | return trace_handle_return(s); |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | enum print_line_t trace_print_printk_msg_only(struct trace_iterator *iter) |
| 50 | { |
| 51 | struct trace_seq *s = &iter->seq; |
| 52 | struct trace_entry *entry = iter->ent; |
| 53 | struct print_entry *field; |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 54 | |
| 55 | trace_assign_type(field, entry); |
| 56 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 57 | trace_seq_puts(s, field->buf); |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 58 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 59 | return trace_handle_return(s); |
Steven Rostedt | 5ef841f | 2009-03-19 12:20:38 -0400 | [diff] [blame] | 60 | } |
| 61 | |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 62 | const char * |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 63 | trace_print_flags_seq(struct trace_seq *p, const char *delim, |
| 64 | unsigned long flags, |
| 65 | const struct trace_print_flags *flag_array) |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 66 | { |
| 67 | unsigned long mask; |
| 68 | const char *str; |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 69 | const char *ret = trace_seq_buffer_ptr(p); |
Andrey Vagin | e404b32 | 2012-02-19 14:16:07 +0300 | [diff] [blame] | 70 | int i, first = 1; |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 71 | |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 72 | for (i = 0; flag_array[i].name && flags; i++) { |
| 73 | |
| 74 | mask = flag_array[i].mask; |
| 75 | if ((flags & mask) != mask) |
| 76 | continue; |
| 77 | |
| 78 | str = flag_array[i].name; |
| 79 | flags &= ~mask; |
Andrey Vagin | e404b32 | 2012-02-19 14:16:07 +0300 | [diff] [blame] | 80 | if (!first && delim) |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 81 | trace_seq_puts(p, delim); |
Andrey Vagin | e404b32 | 2012-02-19 14:16:07 +0300 | [diff] [blame] | 82 | else |
| 83 | first = 0; |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 84 | trace_seq_puts(p, str); |
| 85 | } |
| 86 | |
| 87 | /* check for left over flags */ |
| 88 | if (flags) { |
Steven Rostedt | 5b34926 | 2012-02-20 20:37:32 -0500 | [diff] [blame] | 89 | if (!first && delim) |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 90 | trace_seq_puts(p, delim); |
| 91 | trace_seq_printf(p, "0x%lx", flags); |
| 92 | } |
| 93 | |
| 94 | trace_seq_putc(p, 0); |
| 95 | |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 96 | return ret; |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 97 | } |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 98 | EXPORT_SYMBOL(trace_print_flags_seq); |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 99 | |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 100 | const char * |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 101 | trace_print_symbols_seq(struct trace_seq *p, unsigned long val, |
| 102 | const struct trace_print_flags *symbol_array) |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 103 | { |
| 104 | int i; |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 105 | const char *ret = trace_seq_buffer_ptr(p); |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 106 | |
| 107 | for (i = 0; symbol_array[i].name; i++) { |
| 108 | |
| 109 | if (val != symbol_array[i].mask) |
| 110 | continue; |
| 111 | |
| 112 | trace_seq_puts(p, symbol_array[i].name); |
| 113 | break; |
| 114 | } |
| 115 | |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 116 | if (ret == (const char *)(trace_seq_buffer_ptr(p))) |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 117 | trace_seq_printf(p, "0x%lx", val); |
Byungchul Park | 8e1e1df | 2014-11-24 09:34:19 +0900 | [diff] [blame] | 118 | |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 119 | trace_seq_putc(p, 0); |
| 120 | |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 121 | return ret; |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 122 | } |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 123 | EXPORT_SYMBOL(trace_print_symbols_seq); |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 124 | |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 125 | #if BITS_PER_LONG == 32 |
| 126 | const char * |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 127 | trace_print_symbols_seq_u64(struct trace_seq *p, unsigned long long val, |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 128 | const struct trace_print_flags_u64 *symbol_array) |
| 129 | { |
| 130 | int i; |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 131 | const char *ret = trace_seq_buffer_ptr(p); |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 132 | |
| 133 | for (i = 0; symbol_array[i].name; i++) { |
| 134 | |
| 135 | if (val != symbol_array[i].mask) |
| 136 | continue; |
| 137 | |
| 138 | trace_seq_puts(p, symbol_array[i].name); |
| 139 | break; |
| 140 | } |
| 141 | |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 142 | if (ret == (const char *)(trace_seq_buffer_ptr(p))) |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 143 | trace_seq_printf(p, "0x%llx", val); |
| 144 | |
| 145 | trace_seq_putc(p, 0); |
| 146 | |
| 147 | return ret; |
| 148 | } |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 149 | EXPORT_SYMBOL(trace_print_symbols_seq_u64); |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 150 | #endif |
| 151 | |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 152 | const char * |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 153 | trace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr, |
| 154 | unsigned int bitmask_size) |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 155 | { |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 156 | const char *ret = trace_seq_buffer_ptr(p); |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 157 | |
| 158 | trace_seq_bitmask(p, bitmask_ptr, bitmask_size * 8); |
| 159 | trace_seq_putc(p, 0); |
| 160 | |
| 161 | return ret; |
| 162 | } |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 163 | EXPORT_SYMBOL_GPL(trace_print_bitmask_seq); |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 164 | |
| 165 | const char * |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 166 | trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len) |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 167 | { |
| 168 | int i; |
Steven Rostedt (Red Hat) | 7b039cb | 2014-06-26 09:42:41 -0400 | [diff] [blame] | 169 | const char *ret = trace_seq_buffer_ptr(p); |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 170 | |
| 171 | for (i = 0; i < buf_len; i++) |
| 172 | trace_seq_printf(p, "%s%2.2x", i == 0 ? "" : " ", buf[i]); |
| 173 | |
| 174 | trace_seq_putc(p, 0); |
| 175 | |
| 176 | return ret; |
| 177 | } |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 178 | EXPORT_SYMBOL(trace_print_hex_seq); |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 179 | |
Dave Martin | 6ea2248 | 2015-01-28 12:48:53 +0000 | [diff] [blame] | 180 | const char * |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 181 | trace_print_array_seq(struct trace_seq *p, const void *buf, int count, |
| 182 | size_t el_size) |
Dave Martin | 6ea2248 | 2015-01-28 12:48:53 +0000 | [diff] [blame] | 183 | { |
| 184 | const char *ret = trace_seq_buffer_ptr(p); |
| 185 | const char *prefix = ""; |
| 186 | void *ptr = (void *)buf; |
Alex Bennée | ac01ce1 | 2015-04-29 16:18:46 +0100 | [diff] [blame] | 187 | size_t buf_len = count * el_size; |
Dave Martin | 6ea2248 | 2015-01-28 12:48:53 +0000 | [diff] [blame] | 188 | |
| 189 | trace_seq_putc(p, '{'); |
| 190 | |
| 191 | while (ptr < buf + buf_len) { |
| 192 | switch (el_size) { |
| 193 | case 1: |
| 194 | trace_seq_printf(p, "%s0x%x", prefix, |
| 195 | *(u8 *)ptr); |
| 196 | break; |
| 197 | case 2: |
| 198 | trace_seq_printf(p, "%s0x%x", prefix, |
| 199 | *(u16 *)ptr); |
| 200 | break; |
| 201 | case 4: |
| 202 | trace_seq_printf(p, "%s0x%x", prefix, |
| 203 | *(u32 *)ptr); |
| 204 | break; |
| 205 | case 8: |
| 206 | trace_seq_printf(p, "%s0x%llx", prefix, |
| 207 | *(u64 *)ptr); |
| 208 | break; |
| 209 | default: |
| 210 | trace_seq_printf(p, "BAD SIZE:%zu 0x%x", el_size, |
| 211 | *(u8 *)ptr); |
| 212 | el_size = 1; |
| 213 | } |
| 214 | prefix = ","; |
| 215 | ptr += el_size; |
| 216 | } |
| 217 | |
| 218 | trace_seq_putc(p, '}'); |
| 219 | trace_seq_putc(p, 0); |
| 220 | |
| 221 | return ret; |
| 222 | } |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 223 | EXPORT_SYMBOL(trace_print_array_seq); |
Dave Martin | 6ea2248 | 2015-01-28 12:48:53 +0000 | [diff] [blame] | 224 | |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 225 | int trace_raw_output_prep(struct trace_iterator *iter, |
| 226 | struct trace_event *trace_event) |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 227 | { |
Steven Rostedt (Red Hat) | 2425bcb | 2015-05-05 11:45:27 -0400 | [diff] [blame] | 228 | struct trace_event_call *event; |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 229 | struct trace_seq *s = &iter->seq; |
| 230 | struct trace_seq *p = &iter->tmp_seq; |
| 231 | struct trace_entry *entry; |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 232 | |
Steven Rostedt (Red Hat) | 2425bcb | 2015-05-05 11:45:27 -0400 | [diff] [blame] | 233 | event = container_of(trace_event, struct trace_event_call, event); |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 234 | entry = iter->ent; |
| 235 | |
| 236 | if (entry->type != event->event.type) { |
| 237 | WARN_ON_ONCE(1); |
| 238 | return TRACE_TYPE_UNHANDLED; |
| 239 | } |
| 240 | |
| 241 | trace_seq_init(p); |
Steven Rostedt (Red Hat) | 687fcc4 | 2015-05-13 14:20:14 -0400 | [diff] [blame] | 242 | trace_seq_printf(s, "%s: ", trace_event_name(event)); |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 243 | |
Steven Rostedt (Red Hat) | 8e2e095 | 2014-11-14 11:42:06 -0500 | [diff] [blame] | 244 | return trace_handle_return(s); |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 245 | } |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 246 | EXPORT_SYMBOL(trace_raw_output_prep); |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 247 | |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 248 | static int trace_output_raw(struct trace_iterator *iter, char *name, |
| 249 | char *fmt, va_list ap) |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 250 | { |
| 251 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 252 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 253 | trace_seq_printf(s, "%s: ", name); |
| 254 | trace_seq_vprintf(s, fmt, ap); |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 255 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 256 | return trace_handle_return(s); |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 257 | } |
| 258 | |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 259 | int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...) |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 260 | { |
| 261 | va_list ap; |
| 262 | int ret; |
| 263 | |
| 264 | va_start(ap, fmt); |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 265 | ret = trace_output_raw(iter, name, fmt, ap); |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 266 | va_end(ap); |
| 267 | |
| 268 | return ret; |
| 269 | } |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 270 | EXPORT_SYMBOL_GPL(trace_output_call); |
Steven Rostedt | 1d6bae9 | 2012-08-09 19:16:14 -0400 | [diff] [blame] | 271 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 272 | #ifdef CONFIG_KRETPROBES |
| 273 | static inline const char *kretprobed(const char *name) |
| 274 | { |
| 275 | static const char tramp_name[] = "kretprobe_trampoline"; |
| 276 | int size = sizeof(tramp_name); |
| 277 | |
| 278 | if (strncmp(tramp_name, name, size) == 0) |
| 279 | return "[unknown/kretprobe'd]"; |
| 280 | return name; |
| 281 | } |
| 282 | #else |
| 283 | static inline const char *kretprobed(const char *name) |
| 284 | { |
| 285 | return name; |
| 286 | } |
| 287 | #endif /* CONFIG_KRETPROBES */ |
| 288 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 289 | static void |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 290 | seq_print_sym_short(struct trace_seq *s, const char *fmt, unsigned long address) |
| 291 | { |
| 292 | #ifdef CONFIG_KALLSYMS |
| 293 | char str[KSYM_SYMBOL_LEN]; |
| 294 | const char *name; |
| 295 | |
| 296 | kallsyms_lookup(address, NULL, NULL, NULL, str); |
| 297 | |
| 298 | name = kretprobed(str); |
| 299 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 300 | trace_seq_printf(s, fmt, name); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 301 | #endif |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 302 | } |
| 303 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 304 | static void |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 305 | seq_print_sym_offset(struct trace_seq *s, const char *fmt, |
| 306 | unsigned long address) |
| 307 | { |
| 308 | #ifdef CONFIG_KALLSYMS |
| 309 | char str[KSYM_SYMBOL_LEN]; |
| 310 | const char *name; |
| 311 | |
| 312 | sprint_symbol(str, address); |
| 313 | name = kretprobed(str); |
| 314 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 315 | trace_seq_printf(s, fmt, name); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 316 | #endif |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | #ifndef CONFIG_64BIT |
| 320 | # define IP_FMT "%08lx" |
| 321 | #else |
| 322 | # define IP_FMT "%016lx" |
| 323 | #endif |
| 324 | |
Steven Rostedt (Red Hat) | ef92480 | 2015-09-28 10:16:12 -0400 | [diff] [blame] | 325 | static int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, |
| 326 | unsigned long ip, unsigned long sym_flags) |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 327 | { |
| 328 | struct file *file = NULL; |
| 329 | unsigned long vmstart = 0; |
| 330 | int ret = 1; |
| 331 | |
Johannes Berg | d184b31 | 2009-11-25 16:10:14 +0100 | [diff] [blame] | 332 | if (s->full) |
| 333 | return 0; |
| 334 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 335 | if (mm) { |
| 336 | const struct vm_area_struct *vma; |
| 337 | |
| 338 | down_read(&mm->mmap_sem); |
| 339 | vma = find_vma(mm, ip); |
| 340 | if (vma) { |
| 341 | file = vma->vm_file; |
| 342 | vmstart = vma->vm_start; |
| 343 | } |
| 344 | if (file) { |
| 345 | ret = trace_seq_path(s, &file->f_path); |
| 346 | if (ret) |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 347 | trace_seq_printf(s, "[+0x%lx]", |
| 348 | ip - vmstart); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 349 | } |
| 350 | up_read(&mm->mmap_sem); |
| 351 | } |
| 352 | if (ret && ((sym_flags & TRACE_ITER_SYM_ADDR) || !file)) |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 353 | trace_seq_printf(s, " <" IP_FMT ">", ip); |
| 354 | return !trace_seq_has_overflowed(s); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | int |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 358 | seq_print_ip_sym(struct trace_seq *s, unsigned long ip, unsigned long sym_flags) |
| 359 | { |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 360 | if (!ip) { |
| 361 | trace_seq_putc(s, '0'); |
| 362 | goto out; |
| 363 | } |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 364 | |
| 365 | if (sym_flags & TRACE_ITER_SYM_OFFSET) |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 366 | seq_print_sym_offset(s, "%s", ip); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 367 | else |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 368 | seq_print_sym_short(s, "%s", ip); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 369 | |
| 370 | if (sym_flags & TRACE_ITER_SYM_ADDR) |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 371 | trace_seq_printf(s, " <" IP_FMT ">", ip); |
| 372 | |
| 373 | out: |
| 374 | return !trace_seq_has_overflowed(s); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 375 | } |
| 376 | |
Steven Rostedt | f81c972 | 2009-09-11 14:24:13 -0400 | [diff] [blame] | 377 | /** |
| 378 | * trace_print_lat_fmt - print the irq, preempt and lockdep fields |
| 379 | * @s: trace seq struct to write to |
| 380 | * @entry: The trace entry field from the ring buffer |
| 381 | * |
| 382 | * Prints the generic fields of irqs off, in hard or softirq, preempt |
Steven Rostedt | e6e1e25 | 2011-03-09 10:41:56 -0500 | [diff] [blame] | 383 | * count. |
Steven Rostedt | f81c972 | 2009-09-11 14:24:13 -0400 | [diff] [blame] | 384 | */ |
| 385 | int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry) |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 386 | { |
David Sharp | 10da37a | 2010-12-03 16:13:26 -0800 | [diff] [blame] | 387 | char hardsoft_irq; |
| 388 | char need_resched; |
| 389 | char irqs_off; |
| 390 | int hardirq; |
| 391 | int softirq; |
Peter Zijlstra | 7e6867b | 2016-03-18 16:28:04 +0100 | [diff] [blame] | 392 | int nmi; |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 393 | |
Peter Zijlstra | 7e6867b | 2016-03-18 16:28:04 +0100 | [diff] [blame] | 394 | nmi = entry->flags & TRACE_FLAG_NMI; |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 395 | hardirq = entry->flags & TRACE_FLAG_HARDIRQ; |
| 396 | softirq = entry->flags & TRACE_FLAG_SOFTIRQ; |
Arnaldo Carvalho de Melo | d9793bd | 2009-02-03 20:20:41 -0200 | [diff] [blame] | 397 | |
David Sharp | 10da37a | 2010-12-03 16:13:26 -0800 | [diff] [blame] | 398 | irqs_off = |
| 399 | (entry->flags & TRACE_FLAG_IRQS_OFF) ? 'd' : |
| 400 | (entry->flags & TRACE_FLAG_IRQS_NOSUPPORT) ? 'X' : |
| 401 | '.'; |
Peter Zijlstra | e5137b5 | 2013-10-04 17:28:26 +0200 | [diff] [blame] | 402 | |
| 403 | switch (entry->flags & (TRACE_FLAG_NEED_RESCHED | |
| 404 | TRACE_FLAG_PREEMPT_RESCHED)) { |
| 405 | case TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_PREEMPT_RESCHED: |
| 406 | need_resched = 'N'; |
| 407 | break; |
| 408 | case TRACE_FLAG_NEED_RESCHED: |
| 409 | need_resched = 'n'; |
| 410 | break; |
| 411 | case TRACE_FLAG_PREEMPT_RESCHED: |
| 412 | need_resched = 'p'; |
| 413 | break; |
| 414 | default: |
| 415 | need_resched = '.'; |
| 416 | break; |
| 417 | } |
| 418 | |
David Sharp | 10da37a | 2010-12-03 16:13:26 -0800 | [diff] [blame] | 419 | hardsoft_irq = |
Peter Zijlstra | 7e6867b | 2016-03-18 16:28:04 +0100 | [diff] [blame] | 420 | (nmi && hardirq) ? 'Z' : |
| 421 | nmi ? 'z' : |
David Sharp | 10da37a | 2010-12-03 16:13:26 -0800 | [diff] [blame] | 422 | (hardirq && softirq) ? 'H' : |
Peter Zijlstra | 7e6867b | 2016-03-18 16:28:04 +0100 | [diff] [blame] | 423 | hardirq ? 'h' : |
| 424 | softirq ? 's' : |
| 425 | '.' ; |
David Sharp | 10da37a | 2010-12-03 16:13:26 -0800 | [diff] [blame] | 426 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 427 | trace_seq_printf(s, "%c%c%c", |
| 428 | irqs_off, need_resched, hardsoft_irq); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 429 | |
Steven Rostedt | 829b876 | 2009-09-27 07:02:07 -0400 | [diff] [blame] | 430 | if (entry->preempt_count) |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 431 | trace_seq_printf(s, "%x", entry->preempt_count); |
Steven Rostedt | 637e7e8 | 2009-09-11 13:55:35 -0400 | [diff] [blame] | 432 | else |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 433 | trace_seq_putc(s, '.'); |
Steven Rostedt | 829b876 | 2009-09-27 07:02:07 -0400 | [diff] [blame] | 434 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 435 | return !trace_seq_has_overflowed(s); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 436 | } |
| 437 | |
Steven Rostedt | f81c972 | 2009-09-11 14:24:13 -0400 | [diff] [blame] | 438 | static int |
| 439 | lat_print_generic(struct trace_seq *s, struct trace_entry *entry, int cpu) |
| 440 | { |
| 441 | char comm[TASK_COMM_LEN]; |
| 442 | |
| 443 | trace_find_cmdline(entry->pid, comm); |
| 444 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 445 | trace_seq_printf(s, "%8.8s-%-5d %3d", |
| 446 | comm, entry->pid, cpu); |
Steven Rostedt | f81c972 | 2009-09-11 14:24:13 -0400 | [diff] [blame] | 447 | |
| 448 | return trace_print_lat_fmt(s, entry); |
| 449 | } |
| 450 | |
Byungchul Park | 8e1e1df | 2014-11-24 09:34:19 +0900 | [diff] [blame] | 451 | #undef MARK |
| 452 | #define MARK(v, s) {.val = v, .sym = s} |
| 453 | /* trace overhead mark */ |
| 454 | static const struct trace_mark { |
| 455 | unsigned long long val; /* unit: nsec */ |
| 456 | char sym; |
| 457 | } mark[] = { |
| 458 | MARK(1000000000ULL , '$'), /* 1 sec */ |
Jungseok Lee | b838e1d | 2015-07-11 14:51:40 +0000 | [diff] [blame] | 459 | MARK(100000000ULL , '@'), /* 100 msec */ |
| 460 | MARK(10000000ULL , '*'), /* 10 msec */ |
Byungchul Park | 8e1e1df | 2014-11-24 09:34:19 +0900 | [diff] [blame] | 461 | MARK(1000000ULL , '#'), /* 1000 usecs */ |
| 462 | MARK(100000ULL , '!'), /* 100 usecs */ |
| 463 | MARK(10000ULL , '+'), /* 10 usecs */ |
| 464 | }; |
| 465 | #undef MARK |
| 466 | |
| 467 | char trace_find_mark(unsigned long long d) |
| 468 | { |
| 469 | int i; |
| 470 | int size = ARRAY_SIZE(mark); |
| 471 | |
| 472 | for (i = 0; i < size; i++) { |
Jungseok Lee | b838e1d | 2015-07-11 14:51:40 +0000 | [diff] [blame] | 473 | if (d > mark[i].val) |
Byungchul Park | 8e1e1df | 2014-11-24 09:34:19 +0900 | [diff] [blame] | 474 | break; |
| 475 | } |
| 476 | |
| 477 | return (i == size) ? ' ' : mark[i].sym; |
| 478 | } |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 479 | |
Arnaldo Carvalho de Melo | d9793bd | 2009-02-03 20:20:41 -0200 | [diff] [blame] | 480 | static int |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 481 | lat_print_timestamp(struct trace_iterator *iter, u64 next_ts) |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 482 | { |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 483 | struct trace_array *tr = iter->tr; |
| 484 | unsigned long verbose = tr->trace_flags & TRACE_ITER_VERBOSE; |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 485 | unsigned long in_ns = iter->iter_flags & TRACE_FILE_TIME_IN_NS; |
Steven Rostedt (Red Hat) | 12883ef | 2013-03-05 09:24:35 -0500 | [diff] [blame] | 486 | unsigned long long abs_ts = iter->ts - iter->trace_buffer->time_start; |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 487 | unsigned long long rel_ts = next_ts - iter->ts; |
| 488 | struct trace_seq *s = &iter->seq; |
| 489 | |
| 490 | if (in_ns) { |
| 491 | abs_ts = ns2usecs(abs_ts); |
| 492 | rel_ts = ns2usecs(rel_ts); |
| 493 | } |
| 494 | |
| 495 | if (verbose && in_ns) { |
| 496 | unsigned long abs_usec = do_div(abs_ts, USEC_PER_MSEC); |
| 497 | unsigned long abs_msec = (unsigned long)abs_ts; |
| 498 | unsigned long rel_usec = do_div(rel_ts, USEC_PER_MSEC); |
| 499 | unsigned long rel_msec = (unsigned long)rel_ts; |
| 500 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 501 | trace_seq_printf( |
| 502 | s, "[%08llx] %ld.%03ldms (+%ld.%03ldms): ", |
| 503 | ns2usecs(iter->ts), |
| 504 | abs_msec, abs_usec, |
| 505 | rel_msec, rel_usec); |
| 506 | |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 507 | } else if (verbose && !in_ns) { |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 508 | trace_seq_printf( |
| 509 | s, "[%016llx] %lld (+%lld): ", |
| 510 | iter->ts, abs_ts, rel_ts); |
| 511 | |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 512 | } else if (!verbose && in_ns) { |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 513 | trace_seq_printf( |
| 514 | s, " %4lldus%c: ", |
| 515 | abs_ts, |
Byungchul Park | 8e1e1df | 2014-11-24 09:34:19 +0900 | [diff] [blame] | 516 | trace_find_mark(rel_ts * NSEC_PER_USEC)); |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 517 | |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 518 | } else { /* !verbose && !in_ns */ |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 519 | trace_seq_printf(s, " %4lld: ", abs_ts); |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 520 | } |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 521 | |
| 522 | return !trace_seq_has_overflowed(s); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 523 | } |
| 524 | |
| 525 | int trace_print_context(struct trace_iterator *iter) |
| 526 | { |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 527 | struct trace_array *tr = iter->tr; |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 528 | struct trace_seq *s = &iter->seq; |
| 529 | struct trace_entry *entry = iter->ent; |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 530 | unsigned long long t; |
| 531 | unsigned long secs, usec_rem; |
Steven Rostedt | 4ca53085 | 2009-03-16 19:20:15 -0400 | [diff] [blame] | 532 | char comm[TASK_COMM_LEN]; |
Jamie Gennis | 6eaff2c | 2012-11-21 15:04:25 -0800 | [diff] [blame] | 533 | int tgid; |
Steven Rostedt | 4ca53085 | 2009-03-16 19:20:15 -0400 | [diff] [blame] | 534 | |
| 535 | trace_find_cmdline(entry->pid, comm); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 536 | |
Jamie Gennis | 6eaff2c | 2012-11-21 15:04:25 -0800 | [diff] [blame] | 537 | trace_seq_printf(s, "%16s-%-5d ", comm, entry->pid); |
| 538 | |
| 539 | if (tr->trace_flags & TRACE_ITER_TGID) { |
| 540 | tgid = trace_find_tgid(entry->pid); |
| 541 | if (tgid < 0) |
| 542 | trace_seq_puts(s, "(-----) "); |
| 543 | else |
| 544 | trace_seq_printf(s, "(%5d) ", tgid); |
| 545 | } |
| 546 | |
| 547 | trace_seq_printf(s, "[%03d] ", iter->cpu); |
Steven Rostedt | 77271ce | 2011-11-17 09:34:33 -0500 | [diff] [blame] | 548 | |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 549 | if (tr->trace_flags & TRACE_ITER_IRQ_INFO) |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 550 | trace_print_lat_fmt(s, entry); |
Steven Rostedt | 77271ce | 2011-11-17 09:34:33 -0500 | [diff] [blame] | 551 | |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 552 | if (iter->iter_flags & TRACE_FILE_TIME_IN_NS) { |
| 553 | t = ns2usecs(iter->ts); |
| 554 | usec_rem = do_div(t, USEC_PER_SEC); |
| 555 | secs = (unsigned long)t; |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 556 | trace_seq_printf(s, " %5lu.%06lu: ", secs, usec_rem); |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 557 | } else |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 558 | trace_seq_printf(s, " %12llu: ", iter->ts); |
| 559 | |
| 560 | return !trace_seq_has_overflowed(s); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | int trace_print_lat_context(struct trace_iterator *iter) |
| 564 | { |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 565 | struct trace_array *tr = iter->tr; |
Steven Rostedt | db4c75c | 2012-04-19 10:31:47 -0400 | [diff] [blame] | 566 | /* trace_find_next_entry will reset ent_size */ |
| 567 | int ent_size = iter->ent_size; |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 568 | struct trace_seq *s = &iter->seq; |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 569 | u64 next_ts; |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 570 | struct trace_entry *entry = iter->ent, |
| 571 | *next_entry = trace_find_next_entry(iter, NULL, |
| 572 | &next_ts); |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 573 | unsigned long verbose = (tr->trace_flags & TRACE_ITER_VERBOSE); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 574 | |
Steven Rostedt | db4c75c | 2012-04-19 10:31:47 -0400 | [diff] [blame] | 575 | /* Restore the original ent_size */ |
| 576 | iter->ent_size = ent_size; |
| 577 | |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 578 | if (!next_entry) |
| 579 | next_ts = iter->ts; |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 580 | |
| 581 | if (verbose) { |
Steven Rostedt | 4ca53085 | 2009-03-16 19:20:15 -0400 | [diff] [blame] | 582 | char comm[TASK_COMM_LEN]; |
| 583 | |
| 584 | trace_find_cmdline(entry->pid, comm); |
| 585 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 586 | trace_seq_printf( |
| 587 | s, "%16s %5d %3d %d %08x %08lx ", |
| 588 | comm, entry->pid, iter->cpu, entry->flags, |
| 589 | entry->preempt_count, iter->idx); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 590 | } else { |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 591 | lat_print_generic(s, entry, iter->cpu); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 592 | } |
| 593 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 594 | lat_print_timestamp(iter, next_ts); |
David Sharp | 8be0709 | 2012-11-13 12:18:22 -0800 | [diff] [blame] | 595 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 596 | return !trace_seq_has_overflowed(s); |
Frederic Weisbecker | c4a8e8b | 2009-02-02 20:29:21 -0200 | [diff] [blame] | 597 | } |
| 598 | |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 599 | static const char state_to_char[] = TASK_STATE_TO_CHAR_STR; |
| 600 | |
| 601 | static int task_state_char(unsigned long state) |
| 602 | { |
| 603 | int bit = state ? __ffs(state) + 1 : 0; |
| 604 | |
| 605 | return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?'; |
| 606 | } |
| 607 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 608 | /** |
| 609 | * ftrace_find_event - find a registered event |
| 610 | * @type: the type of event to look for |
| 611 | * |
| 612 | * Returns an event of type @type otherwise NULL |
Lai Jiangshan | 4f53596 | 2009-05-18 19:35:34 +0800 | [diff] [blame] | 613 | * Called with trace_event_read_lock() held. |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 614 | */ |
| 615 | struct trace_event *ftrace_find_event(int type) |
| 616 | { |
| 617 | struct trace_event *event; |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 618 | unsigned key; |
| 619 | |
| 620 | key = type & (EVENT_HASHSIZE - 1); |
| 621 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 622 | hlist_for_each_entry(event, &event_hash[key], node) { |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 623 | if (event->type == type) |
| 624 | return event; |
| 625 | } |
| 626 | |
| 627 | return NULL; |
| 628 | } |
| 629 | |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 630 | static LIST_HEAD(ftrace_event_list); |
| 631 | |
| 632 | static int trace_search_list(struct list_head **list) |
| 633 | { |
| 634 | struct trace_event *e; |
| 635 | int last = __TRACE_LAST_TYPE; |
| 636 | |
| 637 | if (list_empty(&ftrace_event_list)) { |
| 638 | *list = &ftrace_event_list; |
| 639 | return last + 1; |
| 640 | } |
| 641 | |
| 642 | /* |
| 643 | * We used up all possible max events, |
| 644 | * lets see if somebody freed one. |
| 645 | */ |
| 646 | list_for_each_entry(e, &ftrace_event_list, list) { |
| 647 | if (e->type != last + 1) |
| 648 | break; |
| 649 | last++; |
| 650 | } |
| 651 | |
| 652 | /* Did we used up all 65 thousand events??? */ |
Steven Rostedt (Red Hat) | 609a740 | 2015-05-13 13:44:36 -0400 | [diff] [blame] | 653 | if ((last + 1) > TRACE_EVENT_TYPE_MAX) |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 654 | return 0; |
| 655 | |
| 656 | *list = &e->list; |
| 657 | return last + 1; |
| 658 | } |
| 659 | |
Lai Jiangshan | 4f53596 | 2009-05-18 19:35:34 +0800 | [diff] [blame] | 660 | void trace_event_read_lock(void) |
| 661 | { |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 662 | down_read(&trace_event_sem); |
Lai Jiangshan | 4f53596 | 2009-05-18 19:35:34 +0800 | [diff] [blame] | 663 | } |
| 664 | |
| 665 | void trace_event_read_unlock(void) |
| 666 | { |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 667 | up_read(&trace_event_sem); |
Lai Jiangshan | 4f53596 | 2009-05-18 19:35:34 +0800 | [diff] [blame] | 668 | } |
| 669 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 670 | /** |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 671 | * register_trace_event - register output for an event type |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 672 | * @event: the event type to register |
| 673 | * |
| 674 | * Event types are stored in a hash and this hash is used to |
| 675 | * find a way to print an event. If the @event->type is set |
| 676 | * then it will use that type, otherwise it will assign a |
| 677 | * type to use. |
| 678 | * |
| 679 | * If you assign your own type, please make sure it is added |
| 680 | * to the trace_type enum in trace.h, to avoid collisions |
| 681 | * with the dynamic types. |
| 682 | * |
| 683 | * Returns the event type number or zero on error. |
| 684 | */ |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 685 | int register_trace_event(struct trace_event *event) |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 686 | { |
| 687 | unsigned key; |
| 688 | int ret = 0; |
| 689 | |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 690 | down_write(&trace_event_sem); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 691 | |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 692 | if (WARN_ON(!event)) |
Peter Zijlstra | 28bea27 | 2009-03-19 20:26:14 +0100 | [diff] [blame] | 693 | goto out; |
Peter Zijlstra | 28bea27 | 2009-03-19 20:26:14 +0100 | [diff] [blame] | 694 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 695 | if (WARN_ON(!event->funcs)) |
| 696 | goto out; |
| 697 | |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 698 | INIT_LIST_HEAD(&event->list); |
| 699 | |
| 700 | if (!event->type) { |
Jaswinder Singh Rajput | 48dd0fe | 2009-05-06 15:45:45 +0530 | [diff] [blame] | 701 | struct list_head *list = NULL; |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 702 | |
Steven Rostedt (Red Hat) | 609a740 | 2015-05-13 13:44:36 -0400 | [diff] [blame] | 703 | if (next_event_type > TRACE_EVENT_TYPE_MAX) { |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 704 | |
| 705 | event->type = trace_search_list(&list); |
| 706 | if (!event->type) |
| 707 | goto out; |
| 708 | |
| 709 | } else { |
Byungchul Park | 8e1e1df | 2014-11-24 09:34:19 +0900 | [diff] [blame] | 710 | |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 711 | event->type = next_event_type++; |
| 712 | list = &ftrace_event_list; |
| 713 | } |
| 714 | |
| 715 | if (WARN_ON(ftrace_find_event(event->type))) |
| 716 | goto out; |
| 717 | |
| 718 | list_add_tail(&event->list, list); |
| 719 | |
| 720 | } else if (event->type > __TRACE_LAST_TYPE) { |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 721 | printk(KERN_WARNING "Need to add type to trace.h\n"); |
| 722 | WARN_ON(1); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 723 | goto out; |
Steven Rostedt | 060fa5c8 | 2009-04-24 12:20:52 -0400 | [diff] [blame] | 724 | } else { |
| 725 | /* Is this event already used */ |
| 726 | if (ftrace_find_event(event->type)) |
| 727 | goto out; |
| 728 | } |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 729 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 730 | if (event->funcs->trace == NULL) |
| 731 | event->funcs->trace = trace_nop_print; |
| 732 | if (event->funcs->raw == NULL) |
| 733 | event->funcs->raw = trace_nop_print; |
| 734 | if (event->funcs->hex == NULL) |
| 735 | event->funcs->hex = trace_nop_print; |
| 736 | if (event->funcs->binary == NULL) |
| 737 | event->funcs->binary = trace_nop_print; |
Arnaldo Carvalho de Melo | 268ccda | 2009-02-04 20:16:39 -0200 | [diff] [blame] | 738 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 739 | key = event->type & (EVENT_HASHSIZE - 1); |
| 740 | |
Lai Jiangshan | 4f53596 | 2009-05-18 19:35:34 +0800 | [diff] [blame] | 741 | hlist_add_head(&event->node, &event_hash[key]); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 742 | |
| 743 | ret = event->type; |
| 744 | out: |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 745 | up_write(&trace_event_sem); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 746 | |
| 747 | return ret; |
| 748 | } |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 749 | EXPORT_SYMBOL_GPL(register_trace_event); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 750 | |
Steven Rostedt | 110bf2b | 2009-06-09 17:29:07 -0400 | [diff] [blame] | 751 | /* |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 752 | * Used by module code with the trace_event_sem held for write. |
Steven Rostedt | 110bf2b | 2009-06-09 17:29:07 -0400 | [diff] [blame] | 753 | */ |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 754 | int __unregister_trace_event(struct trace_event *event) |
Steven Rostedt | 110bf2b | 2009-06-09 17:29:07 -0400 | [diff] [blame] | 755 | { |
| 756 | hlist_del(&event->node); |
| 757 | list_del(&event->list); |
| 758 | return 0; |
| 759 | } |
| 760 | |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 761 | /** |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 762 | * unregister_trace_event - remove a no longer used event |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 763 | * @event: the event to remove |
| 764 | */ |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 765 | int unregister_trace_event(struct trace_event *event) |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 766 | { |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 767 | down_write(&trace_event_sem); |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 768 | __unregister_trace_event(event); |
zhangwei(Jovi) | 52f6ad6 | 2013-03-11 15:14:03 +0800 | [diff] [blame] | 769 | up_write(&trace_event_sem); |
Steven Rostedt | f0868d1 | 2008-12-23 23:24:12 -0500 | [diff] [blame] | 770 | |
| 771 | return 0; |
| 772 | } |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 773 | EXPORT_SYMBOL_GPL(unregister_trace_event); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 774 | |
| 775 | /* |
| 776 | * Standard events |
| 777 | */ |
| 778 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 779 | enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags, |
| 780 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 781 | { |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 782 | trace_seq_printf(&iter->seq, "type: %d\n", iter->ent->type); |
Jiri Olsa | ee5e51f | 2011-03-25 12:05:18 +0100 | [diff] [blame] | 783 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 784 | return trace_handle_return(&iter->seq); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 785 | } |
| 786 | |
| 787 | /* TRACE_FN */ |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 788 | static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags, |
| 789 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 790 | { |
| 791 | struct ftrace_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 792 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 793 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 794 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 795 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 796 | seq_print_ip_sym(s, field->ip, flags); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 797 | |
| 798 | if ((flags & TRACE_ITER_PRINT_PARENT) && field->parent_ip) { |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 799 | trace_seq_puts(s, " <-"); |
| 800 | seq_print_ip_sym(s, field->parent_ip, flags); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 801 | } |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 802 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 803 | trace_seq_putc(s, '\n'); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 804 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 805 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 806 | } |
| 807 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 808 | static enum print_line_t trace_fn_raw(struct trace_iterator *iter, int flags, |
| 809 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 810 | { |
| 811 | struct ftrace_entry *field; |
| 812 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 813 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 814 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 815 | trace_seq_printf(&iter->seq, "%lx %lx\n", |
| 816 | field->ip, |
| 817 | field->parent_ip); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 818 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 819 | return trace_handle_return(&iter->seq); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 820 | } |
| 821 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 822 | static enum print_line_t trace_fn_hex(struct trace_iterator *iter, int flags, |
| 823 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 824 | { |
| 825 | struct ftrace_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 826 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 827 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 828 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 829 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 830 | SEQ_PUT_HEX_FIELD(s, field->ip); |
| 831 | SEQ_PUT_HEX_FIELD(s, field->parent_ip); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 832 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 833 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 834 | } |
| 835 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 836 | static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags, |
| 837 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 838 | { |
| 839 | struct ftrace_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 840 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 841 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 842 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 843 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 844 | SEQ_PUT_FIELD(s, field->ip); |
| 845 | SEQ_PUT_FIELD(s, field->parent_ip); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 846 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 847 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 848 | } |
| 849 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 850 | static struct trace_event_functions trace_fn_funcs = { |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 851 | .trace = trace_fn_trace, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 852 | .raw = trace_fn_raw, |
| 853 | .hex = trace_fn_hex, |
| 854 | .binary = trace_fn_bin, |
| 855 | }; |
| 856 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 857 | static struct trace_event trace_fn_event = { |
| 858 | .type = TRACE_FN, |
| 859 | .funcs = &trace_fn_funcs, |
| 860 | }; |
| 861 | |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 862 | /* TRACE_GRAPH_ENT */ |
| 863 | static enum print_line_t trace_graph_ent_trace(struct trace_iterator *iter, int flags, |
| 864 | struct trace_event *event) |
| 865 | { |
| 866 | struct trace_seq *s = &iter->seq; |
| 867 | struct ftrace_graph_ent_entry *field; |
| 868 | |
| 869 | trace_assign_type(field, iter->ent); |
| 870 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 871 | trace_seq_puts(s, "graph_ent: func="); |
| 872 | if (trace_seq_has_overflowed(s)) |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 873 | return TRACE_TYPE_PARTIAL_LINE; |
| 874 | |
| 875 | if (!seq_print_ip_sym(s, field->graph_ent.func, flags)) |
| 876 | return TRACE_TYPE_PARTIAL_LINE; |
| 877 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 878 | trace_seq_puts(s, "\n"); |
| 879 | if (trace_seq_has_overflowed(s)) |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 880 | return TRACE_TYPE_PARTIAL_LINE; |
| 881 | |
| 882 | return TRACE_TYPE_HANDLED; |
| 883 | } |
| 884 | |
| 885 | static enum print_line_t trace_graph_ent_raw(struct trace_iterator *iter, int flags, |
| 886 | struct trace_event *event) |
| 887 | { |
| 888 | struct ftrace_graph_ent_entry *field; |
| 889 | |
| 890 | trace_assign_type(field, iter->ent); |
| 891 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 892 | trace_seq_printf(&iter->seq, "%lx %d\n", |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 893 | field->graph_ent.func, |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 894 | field->graph_ent.depth); |
| 895 | if (trace_seq_has_overflowed(&iter->seq)) |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 896 | return TRACE_TYPE_PARTIAL_LINE; |
| 897 | |
| 898 | return TRACE_TYPE_HANDLED; |
| 899 | } |
| 900 | |
| 901 | static enum print_line_t trace_graph_ent_hex(struct trace_iterator *iter, int flags, |
| 902 | struct trace_event *event) |
| 903 | { |
| 904 | struct ftrace_graph_ent_entry *field; |
| 905 | struct trace_seq *s = &iter->seq; |
| 906 | |
| 907 | trace_assign_type(field, iter->ent); |
| 908 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 909 | SEQ_PUT_HEX_FIELD(s, field->graph_ent.func); |
| 910 | SEQ_PUT_HEX_FIELD(s, field->graph_ent.depth); |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 911 | |
| 912 | return TRACE_TYPE_HANDLED; |
| 913 | } |
| 914 | |
| 915 | static enum print_line_t trace_graph_ent_bin(struct trace_iterator *iter, int flags, |
| 916 | struct trace_event *event) |
| 917 | { |
| 918 | struct ftrace_graph_ent_entry *field; |
| 919 | struct trace_seq *s = &iter->seq; |
| 920 | |
| 921 | trace_assign_type(field, iter->ent); |
| 922 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 923 | SEQ_PUT_FIELD(s, field->graph_ent.func); |
| 924 | SEQ_PUT_FIELD(s, field->graph_ent.depth); |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 925 | |
| 926 | return TRACE_TYPE_HANDLED; |
| 927 | } |
| 928 | |
| 929 | static struct trace_event_functions trace_graph_ent_funcs = { |
| 930 | .trace = trace_graph_ent_trace, |
| 931 | .raw = trace_graph_ent_raw, |
| 932 | .hex = trace_graph_ent_hex, |
| 933 | .binary = trace_graph_ent_bin, |
| 934 | }; |
| 935 | |
| 936 | static struct trace_event trace_graph_ent_event = { |
| 937 | .type = TRACE_GRAPH_ENT, |
| 938 | .funcs = &trace_graph_ent_funcs, |
| 939 | }; |
| 940 | |
| 941 | /* TRACE_GRAPH_RET */ |
| 942 | static enum print_line_t trace_graph_ret_trace(struct trace_iterator *iter, int flags, |
| 943 | struct trace_event *event) |
| 944 | { |
| 945 | struct trace_seq *s = &iter->seq; |
| 946 | struct trace_entry *entry = iter->ent; |
| 947 | struct ftrace_graph_ret_entry *field; |
| 948 | |
| 949 | trace_assign_type(field, entry); |
| 950 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 951 | trace_seq_puts(s, "graph_ret: func="); |
| 952 | if (trace_seq_has_overflowed(s)) |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 953 | return TRACE_TYPE_PARTIAL_LINE; |
| 954 | |
| 955 | if (!seq_print_ip_sym(s, field->ret.func, flags)) |
| 956 | return TRACE_TYPE_PARTIAL_LINE; |
| 957 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 958 | trace_seq_puts(s, "\n"); |
| 959 | if (trace_seq_has_overflowed(s)) |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 960 | return TRACE_TYPE_PARTIAL_LINE; |
| 961 | |
| 962 | return TRACE_TYPE_HANDLED; |
| 963 | } |
| 964 | |
| 965 | static enum print_line_t trace_graph_ret_raw(struct trace_iterator *iter, int flags, |
| 966 | struct trace_event *event) |
| 967 | { |
| 968 | struct ftrace_graph_ret_entry *field; |
| 969 | |
| 970 | trace_assign_type(field, iter->ent); |
| 971 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 972 | trace_seq_printf(&iter->seq, "%lx %lld %lld %ld %d\n", |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 973 | field->ret.func, |
| 974 | field->ret.calltime, |
| 975 | field->ret.rettime, |
| 976 | field->ret.overrun, |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 977 | field->ret.depth); |
| 978 | if (trace_seq_has_overflowed(&iter->seq)) |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 979 | return TRACE_TYPE_PARTIAL_LINE; |
| 980 | |
| 981 | return TRACE_TYPE_HANDLED; |
| 982 | } |
| 983 | |
| 984 | static enum print_line_t trace_graph_ret_hex(struct trace_iterator *iter, int flags, |
| 985 | struct trace_event *event) |
| 986 | { |
| 987 | struct ftrace_graph_ret_entry *field; |
| 988 | struct trace_seq *s = &iter->seq; |
| 989 | |
| 990 | trace_assign_type(field, iter->ent); |
| 991 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 992 | SEQ_PUT_HEX_FIELD(s, field->ret.func); |
| 993 | SEQ_PUT_HEX_FIELD(s, field->ret.calltime); |
| 994 | SEQ_PUT_HEX_FIELD(s, field->ret.rettime); |
| 995 | SEQ_PUT_HEX_FIELD(s, field->ret.overrun); |
| 996 | SEQ_PUT_HEX_FIELD(s, field->ret.depth); |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 997 | |
| 998 | return TRACE_TYPE_HANDLED; |
| 999 | } |
| 1000 | |
| 1001 | static enum print_line_t trace_graph_ret_bin(struct trace_iterator *iter, int flags, |
| 1002 | struct trace_event *event) |
| 1003 | { |
| 1004 | struct ftrace_graph_ret_entry *field; |
| 1005 | struct trace_seq *s = &iter->seq; |
| 1006 | |
| 1007 | trace_assign_type(field, iter->ent); |
| 1008 | |
Dmitry Shmidt | b96956e | 2015-10-28 10:45:04 -0700 | [diff] [blame] | 1009 | SEQ_PUT_FIELD(s, field->ret.func); |
| 1010 | SEQ_PUT_FIELD(s, field->ret.calltime); |
| 1011 | SEQ_PUT_FIELD(s, field->ret.rettime); |
| 1012 | SEQ_PUT_FIELD(s, field->ret.overrun); |
| 1013 | SEQ_PUT_FIELD(s, field->ret.depth); |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 1014 | |
| 1015 | return TRACE_TYPE_HANDLED; |
| 1016 | } |
| 1017 | |
| 1018 | static struct trace_event_functions trace_graph_ret_funcs = { |
| 1019 | .trace = trace_graph_ret_trace, |
| 1020 | .raw = trace_graph_ret_raw, |
| 1021 | .hex = trace_graph_ret_hex, |
| 1022 | .binary = trace_graph_ret_bin, |
| 1023 | }; |
| 1024 | |
| 1025 | static struct trace_event trace_graph_ret_event = { |
| 1026 | .type = TRACE_GRAPH_RET, |
| 1027 | .funcs = &trace_graph_ret_funcs, |
| 1028 | }; |
| 1029 | |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1030 | /* TRACE_CTX an TRACE_WAKE */ |
Arnaldo Carvalho de Melo | ae7462b | 2009-02-03 22:05:50 -0200 | [diff] [blame] | 1031 | static enum print_line_t trace_ctxwake_print(struct trace_iterator *iter, |
| 1032 | char *delim) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1033 | { |
| 1034 | struct ctx_switch_entry *field; |
Steven Rostedt | 4ca53085 | 2009-03-16 19:20:15 -0400 | [diff] [blame] | 1035 | char comm[TASK_COMM_LEN]; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1036 | int S, T; |
| 1037 | |
Steven Rostedt | 4ca53085 | 2009-03-16 19:20:15 -0400 | [diff] [blame] | 1038 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1039 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1040 | |
| 1041 | T = task_state_char(field->next_state); |
| 1042 | S = task_state_char(field->prev_state); |
Steven Rostedt | 4ca53085 | 2009-03-16 19:20:15 -0400 | [diff] [blame] | 1043 | trace_find_cmdline(field->next_pid, comm); |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1044 | trace_seq_printf(&iter->seq, |
| 1045 | " %5d:%3d:%c %s [%03d] %5d:%3d:%c %s\n", |
| 1046 | field->prev_pid, |
| 1047 | field->prev_prio, |
| 1048 | S, delim, |
| 1049 | field->next_cpu, |
| 1050 | field->next_pid, |
| 1051 | field->next_prio, |
| 1052 | T, comm); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1053 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1054 | return trace_handle_return(&iter->seq); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1055 | } |
| 1056 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1057 | static enum print_line_t trace_ctx_print(struct trace_iterator *iter, int flags, |
| 1058 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1059 | { |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1060 | return trace_ctxwake_print(iter, "==>"); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1061 | } |
| 1062 | |
Arnaldo Carvalho de Melo | ae7462b | 2009-02-03 22:05:50 -0200 | [diff] [blame] | 1063 | static enum print_line_t trace_wake_print(struct trace_iterator *iter, |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1064 | int flags, struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1065 | { |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1066 | return trace_ctxwake_print(iter, " +"); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1067 | } |
| 1068 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1069 | static int trace_ctxwake_raw(struct trace_iterator *iter, char S) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1070 | { |
| 1071 | struct ctx_switch_entry *field; |
| 1072 | int T; |
| 1073 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1074 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1075 | |
| 1076 | if (!S) |
Hiroshi Shimamoto | b0f56f1 | 2009-10-01 13:33:28 +0900 | [diff] [blame] | 1077 | S = task_state_char(field->prev_state); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1078 | T = task_state_char(field->next_state); |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1079 | trace_seq_printf(&iter->seq, "%d %d %c %d %d %d %c\n", |
| 1080 | field->prev_pid, |
| 1081 | field->prev_prio, |
| 1082 | S, |
| 1083 | field->next_cpu, |
| 1084 | field->next_pid, |
| 1085 | field->next_prio, |
| 1086 | T); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1087 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1088 | return trace_handle_return(&iter->seq); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1089 | } |
| 1090 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1091 | static enum print_line_t trace_ctx_raw(struct trace_iterator *iter, int flags, |
| 1092 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1093 | { |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1094 | return trace_ctxwake_raw(iter, 0); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1095 | } |
| 1096 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1097 | static enum print_line_t trace_wake_raw(struct trace_iterator *iter, int flags, |
| 1098 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1099 | { |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1100 | return trace_ctxwake_raw(iter, '+'); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1101 | } |
| 1102 | |
| 1103 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1104 | static int trace_ctxwake_hex(struct trace_iterator *iter, char S) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1105 | { |
| 1106 | struct ctx_switch_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1107 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1108 | int T; |
| 1109 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1110 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1111 | |
| 1112 | if (!S) |
Hiroshi Shimamoto | b0f56f1 | 2009-10-01 13:33:28 +0900 | [diff] [blame] | 1113 | S = task_state_char(field->prev_state); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1114 | T = task_state_char(field->next_state); |
| 1115 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1116 | SEQ_PUT_HEX_FIELD(s, field->prev_pid); |
| 1117 | SEQ_PUT_HEX_FIELD(s, field->prev_prio); |
| 1118 | SEQ_PUT_HEX_FIELD(s, S); |
| 1119 | SEQ_PUT_HEX_FIELD(s, field->next_cpu); |
| 1120 | SEQ_PUT_HEX_FIELD(s, field->next_pid); |
| 1121 | SEQ_PUT_HEX_FIELD(s, field->next_prio); |
| 1122 | SEQ_PUT_HEX_FIELD(s, T); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1123 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1124 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1125 | } |
| 1126 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1127 | static enum print_line_t trace_ctx_hex(struct trace_iterator *iter, int flags, |
| 1128 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1129 | { |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1130 | return trace_ctxwake_hex(iter, 0); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1131 | } |
| 1132 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1133 | static enum print_line_t trace_wake_hex(struct trace_iterator *iter, int flags, |
| 1134 | struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1135 | { |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1136 | return trace_ctxwake_hex(iter, '+'); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1137 | } |
| 1138 | |
Arnaldo Carvalho de Melo | ae7462b | 2009-02-03 22:05:50 -0200 | [diff] [blame] | 1139 | static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter, |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1140 | int flags, struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1141 | { |
| 1142 | struct ctx_switch_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1143 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1144 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1145 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1146 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1147 | SEQ_PUT_FIELD(s, field->prev_pid); |
| 1148 | SEQ_PUT_FIELD(s, field->prev_prio); |
| 1149 | SEQ_PUT_FIELD(s, field->prev_state); |
| 1150 | SEQ_PUT_FIELD(s, field->next_cpu); |
| 1151 | SEQ_PUT_FIELD(s, field->next_pid); |
| 1152 | SEQ_PUT_FIELD(s, field->next_prio); |
| 1153 | SEQ_PUT_FIELD(s, field->next_state); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1154 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1155 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1156 | } |
| 1157 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1158 | static struct trace_event_functions trace_ctx_funcs = { |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1159 | .trace = trace_ctx_print, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1160 | .raw = trace_ctx_raw, |
| 1161 | .hex = trace_ctx_hex, |
| 1162 | .binary = trace_ctxwake_bin, |
| 1163 | }; |
| 1164 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1165 | static struct trace_event trace_ctx_event = { |
| 1166 | .type = TRACE_CTX, |
| 1167 | .funcs = &trace_ctx_funcs, |
| 1168 | }; |
| 1169 | |
| 1170 | static struct trace_event_functions trace_wake_funcs = { |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1171 | .trace = trace_wake_print, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1172 | .raw = trace_wake_raw, |
| 1173 | .hex = trace_wake_hex, |
| 1174 | .binary = trace_ctxwake_bin, |
| 1175 | }; |
| 1176 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1177 | static struct trace_event trace_wake_event = { |
| 1178 | .type = TRACE_WAKE, |
| 1179 | .funcs = &trace_wake_funcs, |
| 1180 | }; |
| 1181 | |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1182 | /* TRACE_STACK */ |
| 1183 | |
Arnaldo Carvalho de Melo | ae7462b | 2009-02-03 22:05:50 -0200 | [diff] [blame] | 1184 | static enum print_line_t trace_stack_print(struct trace_iterator *iter, |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1185 | int flags, struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1186 | { |
| 1187 | struct stack_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1188 | struct trace_seq *s = &iter->seq; |
Steven Rostedt | 4a9bd3f | 2011-07-14 16:36:53 -0400 | [diff] [blame] | 1189 | unsigned long *p; |
| 1190 | unsigned long *end; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1191 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1192 | trace_assign_type(field, iter->ent); |
Steven Rostedt | 4a9bd3f | 2011-07-14 16:36:53 -0400 | [diff] [blame] | 1193 | end = (unsigned long *)((long)iter->ent + iter->ent_size); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1194 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1195 | trace_seq_puts(s, "<stack trace>\n"); |
Steven Rostedt | 4a9bd3f | 2011-07-14 16:36:53 -0400 | [diff] [blame] | 1196 | |
| 1197 | for (p = field->caller; p && *p != ULONG_MAX && p < end; p++) { |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1198 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1199 | if (trace_seq_has_overflowed(s)) |
| 1200 | break; |
| 1201 | |
| 1202 | trace_seq_puts(s, " => "); |
| 1203 | seq_print_ip_sym(s, *p, flags); |
| 1204 | trace_seq_putc(s, '\n'); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1205 | } |
| 1206 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1207 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1208 | } |
| 1209 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1210 | static struct trace_event_functions trace_stack_funcs = { |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1211 | .trace = trace_stack_print, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1212 | }; |
| 1213 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1214 | static struct trace_event trace_stack_event = { |
| 1215 | .type = TRACE_STACK, |
| 1216 | .funcs = &trace_stack_funcs, |
| 1217 | }; |
| 1218 | |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1219 | /* TRACE_USER_STACK */ |
Arnaldo Carvalho de Melo | ae7462b | 2009-02-03 22:05:50 -0200 | [diff] [blame] | 1220 | static enum print_line_t trace_user_stack_print(struct trace_iterator *iter, |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1221 | int flags, struct trace_event *event) |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1222 | { |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 1223 | struct trace_array *tr = iter->tr; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1224 | struct userstack_entry *field; |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1225 | struct trace_seq *s = &iter->seq; |
Steven Rostedt (Red Hat) | 6b1032d | 2015-09-28 10:11:44 -0400 | [diff] [blame] | 1226 | struct mm_struct *mm = NULL; |
| 1227 | unsigned int i; |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1228 | |
Arnaldo Carvalho de Melo | 2c9b238 | 2009-02-02 20:30:12 -0200 | [diff] [blame] | 1229 | trace_assign_type(field, iter->ent); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1230 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1231 | trace_seq_puts(s, "<user stack trace>\n"); |
Steven Rostedt (Red Hat) | 6b1032d | 2015-09-28 10:11:44 -0400 | [diff] [blame] | 1232 | |
Steven Rostedt (Red Hat) | 983f938 | 2015-09-30 09:42:05 -0400 | [diff] [blame] | 1233 | if (tr->trace_flags & TRACE_ITER_SYM_USEROBJ) { |
Steven Rostedt (Red Hat) | 6b1032d | 2015-09-28 10:11:44 -0400 | [diff] [blame] | 1234 | struct task_struct *task; |
| 1235 | /* |
| 1236 | * we do the lookup on the thread group leader, |
| 1237 | * since individual threads might have already quit! |
| 1238 | */ |
| 1239 | rcu_read_lock(); |
| 1240 | task = find_task_by_vpid(field->tgid); |
| 1241 | if (task) |
| 1242 | mm = get_task_mm(task); |
| 1243 | rcu_read_unlock(); |
| 1244 | } |
| 1245 | |
| 1246 | for (i = 0; i < FTRACE_STACK_ENTRIES; i++) { |
| 1247 | unsigned long ip = field->caller[i]; |
| 1248 | |
| 1249 | if (ip == ULONG_MAX || trace_seq_has_overflowed(s)) |
| 1250 | break; |
| 1251 | |
| 1252 | trace_seq_puts(s, " => "); |
| 1253 | |
| 1254 | if (!ip) { |
| 1255 | trace_seq_puts(s, "??"); |
| 1256 | trace_seq_putc(s, '\n'); |
| 1257 | continue; |
| 1258 | } |
| 1259 | |
| 1260 | seq_print_user_ip(s, mm, ip, flags); |
| 1261 | trace_seq_putc(s, '\n'); |
| 1262 | } |
| 1263 | |
| 1264 | if (mm) |
| 1265 | mmput(mm); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1266 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1267 | return trace_handle_return(s); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1268 | } |
| 1269 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1270 | static struct trace_event_functions trace_user_stack_funcs = { |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1271 | .trace = trace_user_stack_print, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1272 | }; |
| 1273 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1274 | static struct trace_event trace_user_stack_event = { |
| 1275 | .type = TRACE_USER_STACK, |
| 1276 | .funcs = &trace_user_stack_funcs, |
| 1277 | }; |
| 1278 | |
Steven Rostedt (Red Hat) | e7c15cd | 2016-06-23 12:45:36 -0400 | [diff] [blame] | 1279 | /* TRACE_HWLAT */ |
| 1280 | static enum print_line_t |
| 1281 | trace_hwlat_print(struct trace_iterator *iter, int flags, |
| 1282 | struct trace_event *event) |
| 1283 | { |
| 1284 | struct trace_entry *entry = iter->ent; |
| 1285 | struct trace_seq *s = &iter->seq; |
| 1286 | struct hwlat_entry *field; |
| 1287 | |
| 1288 | trace_assign_type(field, entry); |
| 1289 | |
Steven Rostedt (Red Hat) | 7b2c862 | 2016-08-04 12:49:53 -0400 | [diff] [blame] | 1290 | trace_seq_printf(s, "#%-5u inner/outer(us): %4llu/%-5llu ts:%ld.%09ld", |
Steven Rostedt (Red Hat) | e7c15cd | 2016-06-23 12:45:36 -0400 | [diff] [blame] | 1291 | field->seqnum, |
| 1292 | field->duration, |
| 1293 | field->outer_duration, |
| 1294 | field->timestamp.tv_sec, |
| 1295 | field->timestamp.tv_nsec); |
| 1296 | |
Steven Rostedt (Red Hat) | 7b2c862 | 2016-08-04 12:49:53 -0400 | [diff] [blame] | 1297 | if (field->nmi_count) { |
| 1298 | /* |
| 1299 | * The generic sched_clock() is not NMI safe, thus |
| 1300 | * we only record the count and not the time. |
| 1301 | */ |
| 1302 | if (!IS_ENABLED(CONFIG_GENERIC_SCHED_CLOCK)) |
| 1303 | trace_seq_printf(s, " nmi-total:%llu", |
| 1304 | field->nmi_total_ts); |
| 1305 | trace_seq_printf(s, " nmi-count:%u", |
| 1306 | field->nmi_count); |
| 1307 | } |
| 1308 | |
| 1309 | trace_seq_putc(s, '\n'); |
| 1310 | |
Steven Rostedt (Red Hat) | e7c15cd | 2016-06-23 12:45:36 -0400 | [diff] [blame] | 1311 | return trace_handle_return(s); |
| 1312 | } |
| 1313 | |
| 1314 | |
| 1315 | static enum print_line_t |
| 1316 | trace_hwlat_raw(struct trace_iterator *iter, int flags, |
| 1317 | struct trace_event *event) |
| 1318 | { |
| 1319 | struct hwlat_entry *field; |
| 1320 | struct trace_seq *s = &iter->seq; |
| 1321 | |
| 1322 | trace_assign_type(field, iter->ent); |
| 1323 | |
| 1324 | trace_seq_printf(s, "%llu %lld %ld %09ld %u\n", |
| 1325 | field->duration, |
| 1326 | field->outer_duration, |
| 1327 | field->timestamp.tv_sec, |
| 1328 | field->timestamp.tv_nsec, |
| 1329 | field->seqnum); |
| 1330 | |
| 1331 | return trace_handle_return(s); |
| 1332 | } |
| 1333 | |
| 1334 | static struct trace_event_functions trace_hwlat_funcs = { |
| 1335 | .trace = trace_hwlat_print, |
| 1336 | .raw = trace_hwlat_raw, |
| 1337 | }; |
| 1338 | |
| 1339 | static struct trace_event trace_hwlat_event = { |
| 1340 | .type = TRACE_HWLAT, |
| 1341 | .funcs = &trace_hwlat_funcs, |
| 1342 | }; |
| 1343 | |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 1344 | /* TRACE_BPUTS */ |
| 1345 | static enum print_line_t |
| 1346 | trace_bputs_print(struct trace_iterator *iter, int flags, |
| 1347 | struct trace_event *event) |
| 1348 | { |
| 1349 | struct trace_entry *entry = iter->ent; |
| 1350 | struct trace_seq *s = &iter->seq; |
| 1351 | struct bputs_entry *field; |
| 1352 | |
| 1353 | trace_assign_type(field, entry); |
| 1354 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1355 | seq_print_ip_sym(s, field->ip, flags); |
| 1356 | trace_seq_puts(s, ": "); |
| 1357 | trace_seq_puts(s, field->str); |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 1358 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1359 | return trace_handle_return(s); |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 1360 | } |
| 1361 | |
| 1362 | |
| 1363 | static enum print_line_t |
| 1364 | trace_bputs_raw(struct trace_iterator *iter, int flags, |
| 1365 | struct trace_event *event) |
| 1366 | { |
| 1367 | struct bputs_entry *field; |
| 1368 | struct trace_seq *s = &iter->seq; |
| 1369 | |
| 1370 | trace_assign_type(field, iter->ent); |
| 1371 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1372 | trace_seq_printf(s, ": %lx : ", field->ip); |
| 1373 | trace_seq_puts(s, field->str); |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 1374 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1375 | return trace_handle_return(s); |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 1376 | } |
| 1377 | |
| 1378 | static struct trace_event_functions trace_bputs_funcs = { |
| 1379 | .trace = trace_bputs_print, |
| 1380 | .raw = trace_bputs_raw, |
| 1381 | }; |
| 1382 | |
| 1383 | static struct trace_event trace_bputs_event = { |
| 1384 | .type = TRACE_BPUTS, |
| 1385 | .funcs = &trace_bputs_funcs, |
| 1386 | }; |
| 1387 | |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1388 | /* TRACE_BPRINT */ |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1389 | static enum print_line_t |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1390 | trace_bprint_print(struct trace_iterator *iter, int flags, |
| 1391 | struct trace_event *event) |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1392 | { |
| 1393 | struct trace_entry *entry = iter->ent; |
| 1394 | struct trace_seq *s = &iter->seq; |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1395 | struct bprint_entry *field; |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1396 | |
| 1397 | trace_assign_type(field, entry); |
| 1398 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1399 | seq_print_ip_sym(s, field->ip, flags); |
| 1400 | trace_seq_puts(s, ": "); |
| 1401 | trace_seq_bprintf(s, field->fmt, field->buf); |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1402 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1403 | return trace_handle_return(s); |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1404 | } |
| 1405 | |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1406 | |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1407 | static enum print_line_t |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1408 | trace_bprint_raw(struct trace_iterator *iter, int flags, |
| 1409 | struct trace_event *event) |
Frederic Weisbecker | 769b044 | 2009-03-06 17:21:49 +0100 | [diff] [blame] | 1410 | { |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1411 | struct bprint_entry *field; |
Frederic Weisbecker | 769b044 | 2009-03-06 17:21:49 +0100 | [diff] [blame] | 1412 | struct trace_seq *s = &iter->seq; |
| 1413 | |
| 1414 | trace_assign_type(field, iter->ent); |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1415 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1416 | trace_seq_printf(s, ": %lx : ", field->ip); |
| 1417 | trace_seq_bprintf(s, field->fmt, field->buf); |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1418 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1419 | return trace_handle_return(s); |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1420 | } |
| 1421 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1422 | static struct trace_event_functions trace_bprint_funcs = { |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1423 | .trace = trace_bprint_print, |
| 1424 | .raw = trace_bprint_raw, |
| 1425 | }; |
| 1426 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1427 | static struct trace_event trace_bprint_event = { |
| 1428 | .type = TRACE_BPRINT, |
| 1429 | .funcs = &trace_bprint_funcs, |
| 1430 | }; |
| 1431 | |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1432 | /* TRACE_PRINT */ |
| 1433 | static enum print_line_t trace_print_print(struct trace_iterator *iter, |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1434 | int flags, struct trace_event *event) |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1435 | { |
| 1436 | struct print_entry *field; |
| 1437 | struct trace_seq *s = &iter->seq; |
| 1438 | |
| 1439 | trace_assign_type(field, iter->ent); |
| 1440 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1441 | seq_print_ip_sym(s, field->ip, flags); |
| 1442 | trace_seq_printf(s, ": %s", field->buf); |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1443 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1444 | return trace_handle_return(s); |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1445 | } |
| 1446 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1447 | static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags, |
| 1448 | struct trace_event *event) |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1449 | { |
| 1450 | struct print_entry *field; |
| 1451 | |
| 1452 | trace_assign_type(field, iter->ent); |
| 1453 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1454 | trace_seq_printf(&iter->seq, "# %lx %s", field->ip, field->buf); |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1455 | |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 1456 | return trace_handle_return(&iter->seq); |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1457 | } |
| 1458 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1459 | static struct trace_event_functions trace_print_funcs = { |
Frederic Weisbecker | 769b044 | 2009-03-06 17:21:49 +0100 | [diff] [blame] | 1460 | .trace = trace_print_print, |
| 1461 | .raw = trace_print_raw, |
Lai Jiangshan | 1427cdf | 2009-03-06 17:21:47 +0100 | [diff] [blame] | 1462 | }; |
| 1463 | |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 1464 | static struct trace_event trace_print_event = { |
| 1465 | .type = TRACE_PRINT, |
| 1466 | .funcs = &trace_print_funcs, |
| 1467 | }; |
| 1468 | |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1469 | |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1470 | static struct trace_event *events[] __initdata = { |
| 1471 | &trace_fn_event, |
Jamie Gennis | 7ee9aa4 | 2012-11-21 20:14:09 -0800 | [diff] [blame] | 1472 | &trace_graph_ent_event, |
| 1473 | &trace_graph_ret_event, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1474 | &trace_ctx_event, |
| 1475 | &trace_wake_event, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1476 | &trace_stack_event, |
| 1477 | &trace_user_stack_event, |
Steven Rostedt (Red Hat) | 09ae723 | 2013-03-08 21:02:34 -0500 | [diff] [blame] | 1478 | &trace_bputs_event, |
Frederic Weisbecker | 48ead02 | 2009-03-12 18:24:49 +0100 | [diff] [blame] | 1479 | &trace_bprint_event, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1480 | &trace_print_event, |
Steven Rostedt (Red Hat) | e7c15cd | 2016-06-23 12:45:36 -0400 | [diff] [blame] | 1481 | &trace_hwlat_event, |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1482 | NULL |
| 1483 | }; |
| 1484 | |
| 1485 | __init static int init_events(void) |
| 1486 | { |
| 1487 | struct trace_event *event; |
| 1488 | int i, ret; |
| 1489 | |
| 1490 | for (i = 0; events[i]; i++) { |
| 1491 | event = events[i]; |
| 1492 | |
Steven Rostedt (Red Hat) | 9023c93 | 2015-05-05 09:39:12 -0400 | [diff] [blame] | 1493 | ret = register_trace_event(event); |
Steven Rostedt | f633cef | 2008-12-23 23:24:13 -0500 | [diff] [blame] | 1494 | if (!ret) { |
| 1495 | printk(KERN_WARNING "event %d failed to register\n", |
| 1496 | event->type); |
| 1497 | WARN_ON_ONCE(1); |
| 1498 | } |
| 1499 | } |
| 1500 | |
| 1501 | return 0; |
| 1502 | } |
Steven Rostedt | 7374e82 | 2012-05-31 21:40:05 -0400 | [diff] [blame] | 1503 | early_initcall(init_events); |