This source file includes following definitions.
- get_common_field
- common_lock_depth
- common_flags
- common_pc
- raw_field_value
- read_size
- event_format__fprintf
- event_format__print
- parse_ftrace_printk
- parse_saved_cmdline
- parse_ftrace_file
- parse_event_file
- eval_flag
1
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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
15 static 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
38 int 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
52 int 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
66 int 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
80 unsigned long long
81 raw_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
95 unsigned long long read_size(struct tep_event *event, void *ptr, int size)
96 {
97 return tep_read_number(event->tep, ptr, size);
98 }
99
100 void 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
117 void 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
123 void 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
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
149 void parse_saved_cmdline(struct tep_handle *pevent,
150 char *file, unsigned int size __maybe_unused)
151 {
152 char comm[17];
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
165 int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size)
166 {
167 return tep_parse_event(pevent, buf, size, "ftrace");
168 }
169
170 int 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
176 struct flag {
177 const char *name;
178 unsigned long long value;
179 };
180
181 static 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
197 unsigned long long eval_flag(const char *flag)
198 {
199 int i;
200
201
202
203
204
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 }