2 #include "util/evlist.h"
3 #include "util/parse-options.h"
4 #include "util/thread_map.h"
5 #include "event-parse.h"
10 static struct syscall_fmt
{
16 { .name
= "arch_prctl", .errmsg
= true, .alias
= "prctl", },
17 { .name
= "fstat", .errmsg
= true, .alias
= "newfstat", },
18 { .name
= "fstatat", .errmsg
= true, .alias
= "newfstatat", },
19 { .name
= "futex", .errmsg
= true, },
20 { .name
= "poll", .errmsg
= true, .timeout
= true, },
21 { .name
= "ppoll", .errmsg
= true, .timeout
= true, },
22 { .name
= "read", .errmsg
= true, },
23 { .name
= "recvfrom", .errmsg
= true, },
24 { .name
= "select", .errmsg
= true, .timeout
= true, },
25 { .name
= "stat", .errmsg
= true, .alias
= "newstat", },
28 static int syscall_fmt__cmp(const void *name
, const void *fmtp
)
30 const struct syscall_fmt
*fmt
= fmtp
;
31 return strcmp(name
, fmt
->name
);
34 static struct syscall_fmt
*syscall_fmt__find(const char *name
)
36 const int nmemb
= ARRAY_SIZE(syscall_fmts
);
37 return bsearch(name
, syscall_fmts
, nmemb
, sizeof(struct syscall_fmt
), syscall_fmt__cmp
);
41 struct event_format
*tp_format
;
43 struct syscall_fmt
*fmt
;
50 struct syscall
*table
;
52 struct perf_record_opts opts
;
55 static int trace__read_syscall_info(struct trace
*trace
, int id
)
60 if (id
> trace
->syscalls
.max
) {
61 struct syscall
*nsyscalls
= realloc(trace
->syscalls
.table
, (id
+ 1) * sizeof(*sc
));
63 if (nsyscalls
== NULL
)
66 if (trace
->syscalls
.max
!= -1) {
67 memset(nsyscalls
+ trace
->syscalls
.max
+ 1, 0,
68 (id
- trace
->syscalls
.max
) * sizeof(*sc
));
70 memset(nsyscalls
, 0, (id
+ 1) * sizeof(*sc
));
73 trace
->syscalls
.table
= nsyscalls
;
74 trace
->syscalls
.max
= id
;
77 sc
= trace
->syscalls
.table
+ id
;
78 sc
->name
= audit_syscall_to_name(id
, trace
->audit_machine
);
82 sc
->fmt
= syscall_fmt__find(sc
->name
);
84 snprintf(tp_name
, sizeof(tp_name
), "sys_enter_%s", sc
->name
);
85 sc
->tp_format
= event_format__new("syscalls", tp_name
);
87 if (sc
->tp_format
== NULL
&& sc
->fmt
&& sc
->fmt
->alias
) {
88 snprintf(tp_name
, sizeof(tp_name
), "sys_enter_%s", sc
->fmt
->alias
);
89 sc
->tp_format
= event_format__new("syscalls", tp_name
);
92 return sc
->tp_format
!= NULL
? 0 : -1;
95 static size_t syscall__fprintf_args(struct syscall
*sc
, unsigned long *args
, FILE *fp
)
100 if (sc
->tp_format
!= NULL
) {
101 struct format_field
*field
;
103 for (field
= sc
->tp_format
->format
.fields
->next
; field
; field
= field
->next
) {
104 printed
+= fprintf(fp
, "%s%s: %ld", printed
? ", " : "",
105 field
->name
, args
[i
++]);
109 printed
+= fprintf(fp
, "%sarg%d: %ld", printed
? ", " : "", i
, args
[i
]);
117 static int trace__run(struct trace
*trace
)
119 struct perf_evlist
*evlist
= perf_evlist__new(NULL
, NULL
);
120 struct perf_evsel
*evsel
, *evsel_enter
, *evsel_exit
;
121 int err
= -1, i
, nr_events
= 0, before
;
123 if (evlist
== NULL
) {
124 printf("Not enough memory to run!\n");
128 evsel_enter
= perf_evsel__newtp("raw_syscalls", "sys_enter", 0);
129 if (evsel_enter
== NULL
) {
130 printf("Couldn't read the raw_syscalls:sys_enter tracepoint information!\n");
131 goto out_delete_evlist
;
134 perf_evlist__add(evlist
, evsel_enter
);
136 evsel_exit
= perf_evsel__newtp("raw_syscalls", "sys_exit", 1);
137 if (evsel_exit
== NULL
) {
138 printf("Couldn't read the raw_syscalls:sys_exit tracepoint information!\n");
139 goto out_delete_evlist
;
142 perf_evlist__add(evlist
, evsel_exit
);
144 err
= perf_evlist__create_maps(evlist
, &trace
->opts
.target
);
146 printf("Problems parsing the target to trace, check your options!\n");
147 goto out_delete_evlist
;
150 perf_evlist__config_attrs(evlist
, &trace
->opts
);
152 err
= perf_evlist__open(evlist
);
154 printf("Couldn't create the events: %s\n", strerror(errno
));
155 goto out_delete_evlist
;
158 err
= perf_evlist__mmap(evlist
, UINT_MAX
, false);
160 printf("Couldn't mmap the events: %s\n", strerror(errno
));
161 goto out_delete_evlist
;
164 perf_evlist__enable(evlist
);
168 for (i
= 0; i
< evlist
->nr_mmaps
; i
++) {
169 union perf_event
*event
;
171 while ((event
= perf_evlist__mmap_read(evlist
, i
)) != NULL
) {
172 const u32 type
= event
->header
.type
;
174 struct perf_sample sample
;
180 case PERF_RECORD_SAMPLE
:
182 case PERF_RECORD_LOST
:
183 printf("LOST %" PRIu64
" events!\n", event
->lost
.lost
);
186 printf("Unexpected %s event, skipping...\n",
187 perf_event__name(type
));
191 err
= perf_evlist__parse_sample(evlist
, event
, &sample
);
193 printf("Can't parse sample, err = %d, skipping...\n", err
);
197 evsel
= perf_evlist__id2evsel(evlist
, sample
.id
);
199 printf("Unknown tp ID %" PRIu64
", skipping...\n", sample
.id
);
203 id
= perf_evsel__intval(evsel
, &sample
, "id");
205 printf("Invalid syscall %d id, skipping...\n", id
);
209 if ((id
> trace
->syscalls
.max
|| trace
->syscalls
.table
[id
].name
== NULL
) &&
210 trace__read_syscall_info(trace
, id
))
213 if ((id
> trace
->syscalls
.max
|| trace
->syscalls
.table
[id
].name
== NULL
))
216 sc
= &trace
->syscalls
.table
[id
];
218 if (evlist
->threads
->map
[0] == -1 || evlist
->threads
->nr
> 1)
219 printf("%d ", sample
.tid
);
221 if (evsel
== evsel_enter
) {
222 void *args
= perf_evsel__rawptr(evsel
, &sample
, "args");
224 printf("%s(", sc
->name
);
225 syscall__fprintf_args(sc
, args
, stdout
);
226 } else if (evsel
== evsel_exit
) {
227 int ret
= perf_evsel__intval(evsel
, &sample
, "ret");
229 if (ret
< 0 && sc
->fmt
&& sc
->fmt
->errmsg
) {
231 const char *emsg
= strerror_r(-ret
, bf
, sizeof(bf
)),
232 *e
= audit_errno_to_name(-ret
);
234 printf(") = -1 %s %s", e
, emsg
);
235 } else if (ret
== 0 && sc
->fmt
&& sc
->fmt
->timeout
)
236 printf(") = 0 Timeout");
238 printf(") = %d", ret
);
245 if (nr_events
== before
)
246 poll(evlist
->pollfd
, evlist
->nr_fds
, -1);
251 perf_evlist__delete(evlist
);
256 int cmd_trace(int argc
, const char **argv
, const char *prefix __maybe_unused
)
258 const char * const trace_usage
[] = {
259 "perf trace [<options>]",
262 struct trace trace
= {
263 .audit_machine
= audit_detect_machine(),
272 .user_freq
= UINT_MAX
,
273 .user_interval
= ULLONG_MAX
,
278 const struct option trace_options
[] = {
279 OPT_STRING('p', "pid", &trace
.opts
.target
.pid
, "pid",
280 "trace events on existing process id"),
281 OPT_STRING(0, "tid", &trace
.opts
.target
.tid
, "tid",
282 "trace events on existing thread id"),
283 OPT_BOOLEAN(0, "all-cpus", &trace
.opts
.target
.system_wide
,
284 "system-wide collection from all CPUs"),
285 OPT_STRING(0, "cpu", &trace
.opts
.target
.cpu_list
, "cpu",
286 "list of cpus to monitor"),
287 OPT_BOOLEAN(0, "no-inherit", &trace
.opts
.no_inherit
,
288 "child tasks do not inherit counters"),
289 OPT_UINTEGER(0, "mmap-pages", &trace
.opts
.mmap_pages
,
290 "number of mmap data pages"),
291 OPT_STRING(0, "uid", &trace
.opts
.target
.uid_str
, "user",
297 argc
= parse_options(argc
, argv
, trace_options
, trace_usage
, 0);
299 usage_with_options(trace_usage
, trace_options
);
301 err
= perf_target__parse_uid(&trace
.opts
.target
);
304 perf_target__strerror(&trace
.opts
.target
, err
, bf
, sizeof(bf
));
309 return trace__run(&trace
);
This page took 0.039535 seconds and 5 git commands to generate.