1/* 2 * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> 3 * 4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License (not later!) 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * 19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20 */ 21#include <stdio.h> 22#include <stdlib.h> 23#include <string.h> 24#include <ctype.h> 25#include <errno.h> 26 27#include "../perf.h" 28#include "util.h" 29#include "trace-event.h" 30 31static int get_common_field(struct scripting_context *context, 32 int *offset, int *size, const char *type) 33{ 34 struct pevent *pevent = context->pevent; 35 struct event_format *event; 36 struct format_field *field; 37 38 if (!*size) { 39 if (!pevent->events) 40 return 0; 41 42 event = pevent->events[0]; 43 field = pevent_find_common_field(event, type); 44 if (!field) 45 return 0; 46 *offset = field->offset; 47 *size = field->size; 48 } 49 50 return pevent_read_number(pevent, context->event_data + *offset, *size); 51} 52 53int common_lock_depth(struct scripting_context *context) 54{ 55 static int offset; 56 static int size; 57 int ret; 58 59 ret = get_common_field(context, &size, &offset, 60 "common_lock_depth"); 61 if (ret < 0) 62 return -1; 63 64 return ret; 65} 66 67int common_flags(struct scripting_context *context) 68{ 69 static int offset; 70 static int size; 71 int ret; 72 73 ret = get_common_field(context, &size, &offset, 74 "common_flags"); 75 if (ret < 0) 76 return -1; 77 78 return ret; 79} 80 81int common_pc(struct scripting_context *context) 82{ 83 static int offset; 84 static int size; 85 int ret; 86 87 ret = get_common_field(context, &size, &offset, 88 "common_preempt_count"); 89 if (ret < 0) 90 return -1; 91 92 return ret; 93} 94 95unsigned long long 96raw_field_value(struct event_format *event, const char *name, void *data) 97{ 98 struct format_field *field; 99 unsigned long long val; 100 101 field = pevent_find_any_field(event, name); 102 if (!field) 103 return 0ULL; 104 105 pevent_read_number_field(field, data, &val); 106 107 return val; 108} 109 110unsigned long long read_size(struct event_format *event, void *ptr, int size) 111{ 112 return pevent_read_number(event->pevent, ptr, size); 113} 114 115void event_format__fprintf(struct event_format *event, 116 int cpu, void *data, int size, FILE *fp) 117{ 118 struct pevent_record record; 119 struct trace_seq s; 120 121 memset(&record, 0, sizeof(record)); 122 record.cpu = cpu; 123 record.size = size; 124 record.data = data; 125 126 trace_seq_init(&s); 127 pevent_event_info(&s, event, &record); 128 trace_seq_do_fprintf(&s, fp); 129 trace_seq_destroy(&s); 130} 131 132void event_format__print(struct event_format *event, 133 int cpu, void *data, int size) 134{ 135 return event_format__fprintf(event, cpu, data, size, stdout); 136} 137 138void parse_proc_kallsyms(struct pevent *pevent, 139 char *file, unsigned int size __maybe_unused) 140{ 141 unsigned long long addr; 142 char *func; 143 char *line; 144 char *next = NULL; 145 char *addr_str; 146 char *mod; 147 char *fmt = NULL; 148 149 line = strtok_r(file, "\n", &next); 150 while (line) { 151 mod = NULL; 152 addr_str = strtok_r(line, " ", &fmt); 153 addr = strtoull(addr_str, NULL, 16); 154 /* skip character */ 155 strtok_r(NULL, " ", &fmt); 156 func = strtok_r(NULL, "\t", &fmt); 157 mod = strtok_r(NULL, "]", &fmt); 158 /* truncate the extra '[' */ 159 if (mod) 160 mod = mod + 1; 161 162 pevent_register_function(pevent, func, addr, mod); 163 164 line = strtok_r(NULL, "\n", &next); 165 } 166} 167 168void parse_ftrace_printk(struct pevent *pevent, 169 char *file, unsigned int size __maybe_unused) 170{ 171 unsigned long long addr; 172 char *printk; 173 char *line; 174 char *next = NULL; 175 char *addr_str; 176 char *fmt; 177 178 line = strtok_r(file, "\n", &next); 179 while (line) { 180 addr_str = strtok_r(line, ":", &fmt); 181 if (!addr_str) { 182 warning("printk format with empty entry"); 183 break; 184 } 185 addr = strtoull(addr_str, NULL, 16); 186 /* fmt still has a space, skip it */ 187 printk = strdup(fmt+1); 188 line = strtok_r(NULL, "\n", &next); 189 pevent_register_print_string(pevent, printk, addr); 190 } 191} 192 193int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size) 194{ 195 return pevent_parse_event(pevent, buf, size, "ftrace"); 196} 197 198int parse_event_file(struct pevent *pevent, 199 char *buf, unsigned long size, char *sys) 200{ 201 return pevent_parse_event(pevent, buf, size, sys); 202} 203 204struct event_format *trace_find_next_event(struct pevent *pevent, 205 struct event_format *event) 206{ 207 static int idx; 208 209 if (!pevent || !pevent->events) 210 return NULL; 211 212 if (!event) { 213 idx = 0; 214 return pevent->events[0]; 215 } 216 217 if (idx < pevent->nr_events && event == pevent->events[idx]) { 218 idx++; 219 if (idx == pevent->nr_events) 220 return NULL; 221 return pevent->events[idx]; 222 } 223 224 for (idx = 1; idx < pevent->nr_events; idx++) { 225 if (event == pevent->events[idx - 1]) 226 return pevent->events[idx]; 227 } 228 return NULL; 229} 230 231struct flag { 232 const char *name; 233 unsigned long long value; 234}; 235 236static const struct flag flags[] = { 237 { "HI_SOFTIRQ", 0 }, 238 { "TIMER_SOFTIRQ", 1 }, 239 { "NET_TX_SOFTIRQ", 2 }, 240 { "NET_RX_SOFTIRQ", 3 }, 241 { "BLOCK_SOFTIRQ", 4 }, 242 { "BLOCK_IOPOLL_SOFTIRQ", 5 }, 243 { "TASKLET_SOFTIRQ", 6 }, 244 { "SCHED_SOFTIRQ", 7 }, 245 { "HRTIMER_SOFTIRQ", 8 }, 246 { "RCU_SOFTIRQ", 9 }, 247 248 { "HRTIMER_NORESTART", 0 }, 249 { "HRTIMER_RESTART", 1 }, 250}; 251 252unsigned long long eval_flag(const char *flag) 253{ 254 int i; 255 256 /* 257 * Some flags in the format files do not get converted. 258 * If the flag is not numeric, see if it is something that 259 * we already know about. 260 */ 261 if (isdigit(flag[0])) 262 return strtoull(flag, NULL, 0); 263 264 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) 265 if (strcmp(flags[i].name, flag) == 0) 266 return flags[i].value; 267 268 return 0; 269} 270