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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__print(struct event_format *event,
116 int cpu, void *data, int size)
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_printf(&s);
129 trace_seq_destroy(&s);
130}
131
132void parse_proc_kallsyms(struct pevent *pevent,
133 char *file, unsigned int size __maybe_unused)
134{
135 unsigned long long addr;
136 char *func;
137 char *line;
138 char *next = NULL;
139 char *addr_str;
140 char *mod;
141 char *fmt = NULL;
142
143 line = strtok_r(file, "\n", &next);
144 while (line) {
145 mod = NULL;
146 addr_str = strtok_r(line, " ", &fmt);
147 addr = strtoull(addr_str, NULL, 16);
148 /* skip character */
149 strtok_r(NULL, " ", &fmt);
150 func = strtok_r(NULL, "\t", &fmt);
151 mod = strtok_r(NULL, "]", &fmt);
152 /* truncate the extra '[' */
153 if (mod)
154 mod = mod + 1;
155
156 pevent_register_function(pevent, func, addr, mod);
157
158 line = strtok_r(NULL, "\n", &next);
159 }
160}
161
162void parse_ftrace_printk(struct pevent *pevent,
163 char *file, unsigned int size __maybe_unused)
164{
165 unsigned long long addr;
166 char *printk;
167 char *line;
168 char *next = NULL;
169 char *addr_str;
170 char *fmt;
171
172 line = strtok_r(file, "\n", &next);
173 while (line) {
174 addr_str = strtok_r(line, ":", &fmt);
175 if (!addr_str) {
176 warning("printk format with empty entry");
177 break;
178 }
179 addr = strtoull(addr_str, NULL, 16);
180 /* fmt still has a space, skip it */
181 printk = strdup(fmt+1);
182 line = strtok_r(NULL, "\n", &next);
183 pevent_register_print_string(pevent, printk, addr);
184 }
185}
186
187int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size)
188{
189 return pevent_parse_event(pevent, buf, size, "ftrace");
190}
191
192int parse_event_file(struct pevent *pevent,
193 char *buf, unsigned long size, char *sys)
194{
195 return pevent_parse_event(pevent, buf, size, sys);
196}
197
198struct event_format *trace_find_next_event(struct pevent *pevent,
199 struct event_format *event)
200{
201 static int idx;
202
203 if (!pevent || !pevent->events)
204 return NULL;
205
206 if (!event) {
207 idx = 0;
208 return pevent->events[0];
209 }
210
211 if (idx < pevent->nr_events && event == pevent->events[idx]) {
212 idx++;
213 if (idx == pevent->nr_events)
214 return NULL;
215 return pevent->events[idx];
216 }
217
218 for (idx = 1; idx < pevent->nr_events; idx++) {
219 if (event == pevent->events[idx - 1])
220 return pevent->events[idx];
221 }
222 return NULL;
223}
224
225struct flag {
226 const char *name;
227 unsigned long long value;
228};
229
230static const struct flag flags[] = {
231 { "HI_SOFTIRQ", 0 },
232 { "TIMER_SOFTIRQ", 1 },
233 { "NET_TX_SOFTIRQ", 2 },
234 { "NET_RX_SOFTIRQ", 3 },
235 { "BLOCK_SOFTIRQ", 4 },
236 { "BLOCK_IOPOLL_SOFTIRQ", 5 },
237 { "TASKLET_SOFTIRQ", 6 },
238 { "SCHED_SOFTIRQ", 7 },
239 { "HRTIMER_SOFTIRQ", 8 },
240 { "RCU_SOFTIRQ", 9 },
241
242 { "HRTIMER_NORESTART", 0 },
243 { "HRTIMER_RESTART", 1 },
244};
245
246unsigned long long eval_flag(const char *flag)
247{
248 int i;
249
250 /*
251 * Some flags in the format files do not get converted.
252 * If the flag is not numeric, see if it is something that
253 * we already know about.
254 */
255 if (isdigit(flag[0]))
256 return strtoull(flag, NULL, 0);
257
258 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
259 if (strcmp(flags[i].name, flag) == 0)
260 return flags[i].value;
261
262 return 0;
263}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
4 */
5#include <stdio.h>
6#include <stdlib.h>
7#include <string.h>
8#include <errno.h>
9
10#include "debug.h"
11#include "trace-event.h"
12
13#include <linux/ctype.h>
14
15static int get_common_field(struct scripting_context *context,
16 int *offset, int *size, const char *type)
17{
18 struct tep_handle *pevent = context->pevent;
19 struct tep_event *event;
20 struct tep_format_field *field;
21
22 if (!*size) {
23
24 event = tep_get_first_event(pevent);
25 if (!event)
26 return 0;
27
28 field = tep_find_common_field(event, type);
29 if (!field)
30 return 0;
31 *offset = field->offset;
32 *size = field->size;
33 }
34
35 return tep_read_number(pevent, context->event_data + *offset, *size);
36}
37
38int common_lock_depth(struct scripting_context *context)
39{
40 static int offset;
41 static int size;
42 int ret;
43
44 ret = get_common_field(context, &size, &offset,
45 "common_lock_depth");
46 if (ret < 0)
47 return -1;
48
49 return ret;
50}
51
52int common_flags(struct scripting_context *context)
53{
54 static int offset;
55 static int size;
56 int ret;
57
58 ret = get_common_field(context, &size, &offset,
59 "common_flags");
60 if (ret < 0)
61 return -1;
62
63 return ret;
64}
65
66int common_pc(struct scripting_context *context)
67{
68 static int offset;
69 static int size;
70 int ret;
71
72 ret = get_common_field(context, &size, &offset,
73 "common_preempt_count");
74 if (ret < 0)
75 return -1;
76
77 return ret;
78}
79
80unsigned long long
81raw_field_value(struct tep_event *event, const char *name, void *data)
82{
83 struct tep_format_field *field;
84 unsigned long long val;
85
86 field = tep_find_any_field(event, name);
87 if (!field)
88 return 0ULL;
89
90 tep_read_number_field(field, data, &val);
91
92 return val;
93}
94
95unsigned long long read_size(struct tep_event *event, void *ptr, int size)
96{
97 return tep_read_number(event->tep, ptr, size);
98}
99
100void event_format__fprintf(struct tep_event *event,
101 int cpu, void *data, int size, FILE *fp)
102{
103 struct tep_record record;
104 struct trace_seq s;
105
106 memset(&record, 0, sizeof(record));
107 record.cpu = cpu;
108 record.size = size;
109 record.data = data;
110
111 trace_seq_init(&s);
112 tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO);
113 trace_seq_do_fprintf(&s, fp);
114 trace_seq_destroy(&s);
115}
116
117void event_format__print(struct tep_event *event,
118 int cpu, void *data, int size)
119{
120 return event_format__fprintf(event, cpu, data, size, stdout);
121}
122
123void parse_ftrace_printk(struct tep_handle *pevent,
124 char *file, unsigned int size __maybe_unused)
125{
126 unsigned long long addr;
127 char *printk;
128 char *line;
129 char *next = NULL;
130 char *addr_str;
131 char *fmt = NULL;
132
133 line = strtok_r(file, "\n", &next);
134 while (line) {
135 addr_str = strtok_r(line, ":", &fmt);
136 if (!addr_str) {
137 pr_warning("printk format with empty entry");
138 break;
139 }
140 addr = strtoull(addr_str, NULL, 16);
141 /* fmt still has a space, skip it */
142 printk = strdup(fmt+1);
143 line = strtok_r(NULL, "\n", &next);
144 tep_register_print_string(pevent, printk, addr);
145 free(printk);
146 }
147}
148
149void parse_saved_cmdline(struct tep_handle *pevent,
150 char *file, unsigned int size __maybe_unused)
151{
152 char comm[17]; /* Max comm length in the kernel is 16. */
153 char *line;
154 char *next = NULL;
155 int pid;
156
157 line = strtok_r(file, "\n", &next);
158 while (line) {
159 if (sscanf(line, "%d %16s", &pid, comm) == 2)
160 tep_register_comm(pevent, comm, pid);
161 line = strtok_r(NULL, "\n", &next);
162 }
163}
164
165int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size)
166{
167 return tep_parse_event(pevent, buf, size, "ftrace");
168}
169
170int parse_event_file(struct tep_handle *pevent,
171 char *buf, unsigned long size, char *sys)
172{
173 return tep_parse_event(pevent, buf, size, sys);
174}
175
176struct flag {
177 const char *name;
178 unsigned long long value;
179};
180
181static const struct flag flags[] = {
182 { "HI_SOFTIRQ", 0 },
183 { "TIMER_SOFTIRQ", 1 },
184 { "NET_TX_SOFTIRQ", 2 },
185 { "NET_RX_SOFTIRQ", 3 },
186 { "BLOCK_SOFTIRQ", 4 },
187 { "IRQ_POLL_SOFTIRQ", 5 },
188 { "TASKLET_SOFTIRQ", 6 },
189 { "SCHED_SOFTIRQ", 7 },
190 { "HRTIMER_SOFTIRQ", 8 },
191 { "RCU_SOFTIRQ", 9 },
192
193 { "HRTIMER_NORESTART", 0 },
194 { "HRTIMER_RESTART", 1 },
195};
196
197unsigned long long eval_flag(const char *flag)
198{
199 int i;
200
201 /*
202 * Some flags in the format files do not get converted.
203 * If the flag is not numeric, see if it is something that
204 * we already know about.
205 */
206 if (isdigit(flag[0]))
207 return strtoull(flag, NULL, 0);
208
209 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
210 if (strcmp(flags[i].name, flag) == 0)
211 return flags[i].value;
212
213 return 0;
214}