15a8e0ff9SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2aaf045f7SSteven Rostedt /*
3aaf045f7SSteven Rostedt * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
4aaf045f7SSteven Rostedt */
5aaf045f7SSteven Rostedt #include <stdio.h>
6aaf045f7SSteven Rostedt #include <stdlib.h>
7aaf045f7SSteven Rostedt #include <string.h>
8aaf045f7SSteven Rostedt #include <errno.h>
9aaf045f7SSteven Rostedt
10d2a74d53SArnaldo Carvalho de Melo #include "debug.h"
11ea4010d1SSteven Rostedt #include "trace-event.h"
12ea4010d1SSteven Rostedt
133052ba56SArnaldo Carvalho de Melo #include <linux/ctype.h>
14*378ef0f5SIan Rogers #include <linux/kernel.h>
15*378ef0f5SIan Rogers #include <traceevent/event-parse.h>
163d689ed6SArnaldo Carvalho de Melo
get_common_field(struct scripting_context * context,int * offset,int * size,const char * type)17aaf045f7SSteven Rostedt static int get_common_field(struct scripting_context *context,
18aaf045f7SSteven Rostedt int *offset, int *size, const char *type)
197397d80dSTom Zanussi {
20096177a8STzvetomir Stoyanov (VMware) struct tep_handle *pevent = context->pevent;
2197fbf3f0STzvetomir Stoyanov struct tep_event *event;
222c92f982STzvetomir Stoyanov (VMware) struct tep_format_field *field;
23aaf045f7SSteven Rostedt
24aaf045f7SSteven Rostedt if (!*size) {
25bb3dd7e7STzvetomir Stoyanov
26bb3dd7e7STzvetomir Stoyanov event = tep_get_first_event(pevent);
27bb3dd7e7STzvetomir Stoyanov if (!event)
28aaf045f7SSteven Rostedt return 0;
29aaf045f7SSteven Rostedt
30af85cd19STzvetomir Stoyanov (VMware) field = tep_find_common_field(event, type);
31aaf045f7SSteven Rostedt if (!field)
32aaf045f7SSteven Rostedt return 0;
33aaf045f7SSteven Rostedt *offset = field->offset;
34aaf045f7SSteven Rostedt *size = field->size;
35aaf045f7SSteven Rostedt }
36aaf045f7SSteven Rostedt
3759c1baeeSTzvetomir Stoyanov (VMware) return tep_read_number(pevent, context->event_data + *offset, *size);
387397d80dSTom Zanussi }
397397d80dSTom Zanussi
common_lock_depth(struct scripting_context * context)407397d80dSTom Zanussi int common_lock_depth(struct scripting_context *context)
417397d80dSTom Zanussi {
42aaf045f7SSteven Rostedt static int offset;
43aaf045f7SSteven Rostedt static int size;
44aaf045f7SSteven Rostedt int ret;
45aaf045f7SSteven Rostedt
46aaf045f7SSteven Rostedt ret = get_common_field(context, &size, &offset,
47aaf045f7SSteven Rostedt "common_lock_depth");
48aaf045f7SSteven Rostedt if (ret < 0)
49aaf045f7SSteven Rostedt return -1;
50aaf045f7SSteven Rostedt
51aaf045f7SSteven Rostedt return ret;
52aaf045f7SSteven Rostedt }
53aaf045f7SSteven Rostedt
common_flags(struct scripting_context * context)54aaf045f7SSteven Rostedt int common_flags(struct scripting_context *context)
55aaf045f7SSteven Rostedt {
56aaf045f7SSteven Rostedt static int offset;
57aaf045f7SSteven Rostedt static int size;
58aaf045f7SSteven Rostedt int ret;
59aaf045f7SSteven Rostedt
60aaf045f7SSteven Rostedt ret = get_common_field(context, &size, &offset,
61aaf045f7SSteven Rostedt "common_flags");
62aaf045f7SSteven Rostedt if (ret < 0)
63aaf045f7SSteven Rostedt return -1;
64aaf045f7SSteven Rostedt
65aaf045f7SSteven Rostedt return ret;
66aaf045f7SSteven Rostedt }
67aaf045f7SSteven Rostedt
common_pc(struct scripting_context * context)68aaf045f7SSteven Rostedt int common_pc(struct scripting_context *context)
69aaf045f7SSteven Rostedt {
70aaf045f7SSteven Rostedt static int offset;
71aaf045f7SSteven Rostedt static int size;
72aaf045f7SSteven Rostedt int ret;
73aaf045f7SSteven Rostedt
74aaf045f7SSteven Rostedt ret = get_common_field(context, &size, &offset,
75aaf045f7SSteven Rostedt "common_preempt_count");
76aaf045f7SSteven Rostedt if (ret < 0)
77aaf045f7SSteven Rostedt return -1;
78aaf045f7SSteven Rostedt
79aaf045f7SSteven Rostedt return ret;
80aaf045f7SSteven Rostedt }
81aaf045f7SSteven Rostedt
82aaf045f7SSteven Rostedt unsigned long long
raw_field_value(struct tep_event * event,const char * name,void * data)8397fbf3f0STzvetomir Stoyanov raw_field_value(struct tep_event *event, const char *name, void *data)
84aaf045f7SSteven Rostedt {
852c92f982STzvetomir Stoyanov (VMware) struct tep_format_field *field;
86aaf045f7SSteven Rostedt unsigned long long val;
87aaf045f7SSteven Rostedt
88af85cd19STzvetomir Stoyanov (VMware) field = tep_find_any_field(event, name);
89aaf045f7SSteven Rostedt if (!field)
90aaf045f7SSteven Rostedt return 0ULL;
91aaf045f7SSteven Rostedt
9259c1baeeSTzvetomir Stoyanov (VMware) tep_read_number_field(field, data, &val);
93aaf045f7SSteven Rostedt
94aaf045f7SSteven Rostedt return val;
95aaf045f7SSteven Rostedt }
96aaf045f7SSteven Rostedt
read_size(struct tep_event * event,void * ptr,int size)9797fbf3f0STzvetomir Stoyanov unsigned long long read_size(struct tep_event *event, void *ptr, int size)
98aaf045f7SSteven Rostedt {
9969769ce1STzvetomir Stoyanov return tep_read_number(event->tep, ptr, size);
100aaf045f7SSteven Rostedt }
101aaf045f7SSteven Rostedt
event_format__fprintf(struct tep_event * event,int cpu,void * data,int size,FILE * fp)10297fbf3f0STzvetomir Stoyanov void event_format__fprintf(struct tep_event *event,
103aa1aac17SArnaldo Carvalho de Melo int cpu, void *data, int size, FILE *fp)
104aaf045f7SSteven Rostedt {
105cbc49b25STzvetomir Stoyanov (VMware) struct tep_record record;
106aaf045f7SSteven Rostedt struct trace_seq s;
107aaf045f7SSteven Rostedt
108aaf045f7SSteven Rostedt memset(&record, 0, sizeof(record));
109aaf045f7SSteven Rostedt record.cpu = cpu;
110aaf045f7SSteven Rostedt record.size = size;
111aaf045f7SSteven Rostedt record.data = data;
112aaf045f7SSteven Rostedt
113aaf045f7SSteven Rostedt trace_seq_init(&s);
11438847db9STzvetomir Stoyanov tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO);
115aa1aac17SArnaldo Carvalho de Melo trace_seq_do_fprintf(&s, fp);
116b58f608eSJiri Olsa trace_seq_destroy(&s);
117aaf045f7SSteven Rostedt }
118aaf045f7SSteven Rostedt
event_format__print(struct tep_event * event,int cpu,void * data,int size)11997fbf3f0STzvetomir Stoyanov void event_format__print(struct tep_event *event,
120aa1aac17SArnaldo Carvalho de Melo int cpu, void *data, int size)
121aa1aac17SArnaldo Carvalho de Melo {
122aa1aac17SArnaldo Carvalho de Melo return event_format__fprintf(event, cpu, data, size, stdout);
123aa1aac17SArnaldo Carvalho de Melo }
124aa1aac17SArnaldo Carvalho de Melo
parse_ftrace_printk(struct tep_handle * pevent,char * file,unsigned int size __maybe_unused)125096177a8STzvetomir Stoyanov (VMware) void parse_ftrace_printk(struct tep_handle *pevent,
1261d037ca1SIrina Tirdea char *file, unsigned int size __maybe_unused)
127aaf045f7SSteven Rostedt {
128aaf045f7SSteven Rostedt unsigned long long addr;
129aaf045f7SSteven Rostedt char *printk;
130aaf045f7SSteven Rostedt char *line;
131aaf045f7SSteven Rostedt char *next = NULL;
132aaf045f7SSteven Rostedt char *addr_str;
1335bcaaca3SMartin Liška char *fmt = NULL;
134aaf045f7SSteven Rostedt
135aaf045f7SSteven Rostedt line = strtok_r(file, "\n", &next);
136aaf045f7SSteven Rostedt while (line) {
137aaf045f7SSteven Rostedt addr_str = strtok_r(line, ":", &fmt);
138aaf045f7SSteven Rostedt if (!addr_str) {
139d2a74d53SArnaldo Carvalho de Melo pr_warning("printk format with empty entry");
140aaf045f7SSteven Rostedt break;
141aaf045f7SSteven Rostedt }
142aaf045f7SSteven Rostedt addr = strtoull(addr_str, NULL, 16);
143aaf045f7SSteven Rostedt /* fmt still has a space, skip it */
144aaf045f7SSteven Rostedt printk = strdup(fmt+1);
145aaf045f7SSteven Rostedt line = strtok_r(NULL, "\n", &next);
14613a41890STzvetomir Stoyanov (VMware) tep_register_print_string(pevent, printk, addr);
1479c8a182eSSanskriti Sharma free(printk);
148aaf045f7SSteven Rostedt }
149aaf045f7SSteven Rostedt }
150aaf045f7SSteven Rostedt
parse_saved_cmdline(struct tep_handle * pevent,char * file,unsigned int size __maybe_unused)151096177a8STzvetomir Stoyanov (VMware) void parse_saved_cmdline(struct tep_handle *pevent,
152cd4ceb63SNamhyung Kim char *file, unsigned int size __maybe_unused)
153cd4ceb63SNamhyung Kim {
154c9f23d2bSChris Phlipot char comm[17]; /* Max comm length in the kernel is 16. */
155cd4ceb63SNamhyung Kim char *line;
156cd4ceb63SNamhyung Kim char *next = NULL;
157cd4ceb63SNamhyung Kim int pid;
158cd4ceb63SNamhyung Kim
159cd4ceb63SNamhyung Kim line = strtok_r(file, "\n", &next);
160cd4ceb63SNamhyung Kim while (line) {
161c9f23d2bSChris Phlipot if (sscanf(line, "%d %16s", &pid, comm) == 2)
16213a41890STzvetomir Stoyanov (VMware) tep_register_comm(pevent, comm, pid);
163cd4ceb63SNamhyung Kim line = strtok_r(NULL, "\n", &next);
164cd4ceb63SNamhyung Kim }
165cd4ceb63SNamhyung Kim }
166cd4ceb63SNamhyung Kim
parse_ftrace_file(struct tep_handle * pevent,char * buf,unsigned long size)167096177a8STzvetomir Stoyanov (VMware) int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size)
168aaf045f7SSteven Rostedt {
169c60167c1STzvetomir Stoyanov (VMware) return tep_parse_event(pevent, buf, size, "ftrace");
170aaf045f7SSteven Rostedt }
171aaf045f7SSteven Rostedt
parse_event_file(struct tep_handle * pevent,char * buf,unsigned long size,char * sys)172096177a8STzvetomir Stoyanov (VMware) int parse_event_file(struct tep_handle *pevent,
173da378962SArnaldo Carvalho de Melo char *buf, unsigned long size, char *sys)
174aaf045f7SSteven Rostedt {
175c60167c1STzvetomir Stoyanov (VMware) return tep_parse_event(pevent, buf, size, sys);
176aaf045f7SSteven Rostedt }
177aaf045f7SSteven Rostedt
178aaf045f7SSteven Rostedt struct flag {
179aaf045f7SSteven Rostedt const char *name;
180aaf045f7SSteven Rostedt unsigned long long value;
181aaf045f7SSteven Rostedt };
182aaf045f7SSteven Rostedt
183aaf045f7SSteven Rostedt static const struct flag flags[] = {
184aaf045f7SSteven Rostedt { "HI_SOFTIRQ", 0 },
185aaf045f7SSteven Rostedt { "TIMER_SOFTIRQ", 1 },
186aaf045f7SSteven Rostedt { "NET_TX_SOFTIRQ", 2 },
187aaf045f7SSteven Rostedt { "NET_RX_SOFTIRQ", 3 },
188aaf045f7SSteven Rostedt { "BLOCK_SOFTIRQ", 4 },
189511cbce2SChristoph Hellwig { "IRQ_POLL_SOFTIRQ", 5 },
190aaf045f7SSteven Rostedt { "TASKLET_SOFTIRQ", 6 },
191aaf045f7SSteven Rostedt { "SCHED_SOFTIRQ", 7 },
192aaf045f7SSteven Rostedt { "HRTIMER_SOFTIRQ", 8 },
193aaf045f7SSteven Rostedt { "RCU_SOFTIRQ", 9 },
194aaf045f7SSteven Rostedt
195aaf045f7SSteven Rostedt { "HRTIMER_NORESTART", 0 },
196aaf045f7SSteven Rostedt { "HRTIMER_RESTART", 1 },
197aaf045f7SSteven Rostedt };
198aaf045f7SSteven Rostedt
eval_flag(const char * flag)199aaf045f7SSteven Rostedt unsigned long long eval_flag(const char *flag)
200aaf045f7SSteven Rostedt {
201aaf045f7SSteven Rostedt int i;
202aaf045f7SSteven Rostedt
203aaf045f7SSteven Rostedt /*
204aaf045f7SSteven Rostedt * Some flags in the format files do not get converted.
205aaf045f7SSteven Rostedt * If the flag is not numeric, see if it is something that
206aaf045f7SSteven Rostedt * we already know about.
207aaf045f7SSteven Rostedt */
208aaf045f7SSteven Rostedt if (isdigit(flag[0]))
209aaf045f7SSteven Rostedt return strtoull(flag, NULL, 0);
210aaf045f7SSteven Rostedt
211eb31228bSGuo Zhengkui for (i = 0; i < (int)(ARRAY_SIZE(flags)); i++)
212aaf045f7SSteven Rostedt if (strcmp(flags[i].name, flag) == 0)
213aaf045f7SSteven Rostedt return flags[i].value;
214aaf045f7SSteven Rostedt
215aaf045f7SSteven Rostedt return 0;
2167397d80dSTom Zanussi }
217