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
)
59 const char *name
= audit_syscall_to_name(id
, trace
->audit_machine
);
64 if (id
> trace
->syscalls
.max
) {
65 struct syscall
*nsyscalls
= realloc(trace
->syscalls
.table
, (id
+ 1) * sizeof(*sc
));
67 if (nsyscalls
== NULL
)
70 if (trace
->syscalls
.max
!= -1) {
71 memset(nsyscalls
+ trace
->syscalls
.max
+ 1, 0,
72 (id
- trace
->syscalls
.max
) * sizeof(*sc
));
74 memset(nsyscalls
, 0, (id
+ 1) * sizeof(*sc
));
77 trace
->syscalls
.table
= nsyscalls
;
78 trace
->syscalls
.max
= id
;
81 sc
= trace
->syscalls
.table
+ id
;
83 sc
->fmt
= syscall_fmt__find(sc
->name
);
85 snprintf(tp_name
, sizeof(tp_name
), "sys_enter_%s", sc
->name
);
86 sc
->tp_format
= event_format__new("syscalls", tp_name
);
88 if (sc
->tp_format
== NULL
&& sc
->fmt
&& sc
->fmt
->alias
) {
89 snprintf(tp_name
, sizeof(tp_name
), "sys_enter_%s", sc
->fmt
->alias
);
90 sc
->tp_format
= event_format__new("syscalls", tp_name
);
93 return sc
->tp_format
!= NULL
? 0 : -1;
96 static size_t syscall__fprintf_args(struct syscall
*sc
, unsigned long *args
, FILE *fp
)
101 if (sc
->tp_format
!= NULL
) {
102 struct format_field
*field
;
104 for (field
= sc
->tp_format
->format
.fields
->next
; field
; field
= field
->next
) {
105 printed
+= fprintf(fp
, "%s%s: %ld", printed
? ", " : "",
106 field
->name
, args
[i
++]);
110 printed
+= fprintf(fp
, "%sarg%d: %ld", printed
? ", " : "", i
, args
[i
]);
118 typedef int (*tracepoint_handler
)(struct trace
*trace
, struct perf_evsel
*evsel
,
119 struct perf_sample
*sample
);
121 static struct syscall
*trace__syscall_info(struct trace
*trace
,
122 struct perf_evsel
*evsel
,
123 struct perf_sample
*sample
)
125 int id
= perf_evsel__intval(evsel
, sample
, "id");
128 printf("Invalid syscall %d id, skipping...\n", id
);
132 if ((id
> trace
->syscalls
.max
|| trace
->syscalls
.table
[id
].name
== NULL
) &&
133 trace__read_syscall_info(trace
, id
))
136 if ((id
> trace
->syscalls
.max
|| trace
->syscalls
.table
[id
].name
== NULL
))
139 return &trace
->syscalls
.table
[id
];
142 printf("Problems reading syscall %d information\n", id
);
146 static int trace__sys_enter(struct trace
*trace
, struct perf_evsel
*evsel
,
147 struct perf_sample
*sample
)
150 struct syscall
*sc
= trace__syscall_info(trace
, evsel
, sample
);
155 args
= perf_evsel__rawptr(evsel
, sample
, "args");
157 printf("Problems reading syscall arguments\n");
161 printf("%s(", sc
->name
);
162 syscall__fprintf_args(sc
, args
, stdout
);
167 static int trace__sys_exit(struct trace
*trace
, struct perf_evsel
*evsel
,
168 struct perf_sample
*sample
)
171 struct syscall
*sc
= trace__syscall_info(trace
, evsel
, sample
);
176 ret
= perf_evsel__intval(evsel
, sample
, "ret");
178 if (ret
< 0 && sc
->fmt
&& sc
->fmt
->errmsg
) {
180 const char *emsg
= strerror_r(-ret
, bf
, sizeof(bf
)),
181 *e
= audit_errno_to_name(-ret
);
183 printf(") = -1 %s %s", e
, emsg
);
184 } else if (ret
== 0 && sc
->fmt
&& sc
->fmt
->timeout
)
185 printf(") = 0 Timeout");
187 printf(") = %d", ret
);
193 static int trace__run(struct trace
*trace
)
195 struct perf_evlist
*evlist
= perf_evlist__new(NULL
, NULL
);
196 struct perf_evsel
*evsel
;
197 int err
= -1, i
, nr_events
= 0, before
;
199 if (evlist
== NULL
) {
200 printf("Not enough memory to run!\n");
204 if (perf_evlist__add_newtp(evlist
, "raw_syscalls", "sys_enter", trace__sys_enter
) ||
205 perf_evlist__add_newtp(evlist
, "raw_syscalls", "sys_exit", trace__sys_exit
)) {
206 printf("Couldn't read the raw_syscalls tracepoints information!\n");
207 goto out_delete_evlist
;
210 err
= perf_evlist__create_maps(evlist
, &trace
->opts
.target
);
212 printf("Problems parsing the target to trace, check your options!\n");
213 goto out_delete_evlist
;
216 perf_evlist__config_attrs(evlist
, &trace
->opts
);
218 err
= perf_evlist__open(evlist
);
220 printf("Couldn't create the events: %s\n", strerror(errno
));
221 goto out_delete_evlist
;
224 err
= perf_evlist__mmap(evlist
, UINT_MAX
, false);
226 printf("Couldn't mmap the events: %s\n", strerror(errno
));
227 goto out_delete_evlist
;
230 perf_evlist__enable(evlist
);
234 for (i
= 0; i
< evlist
->nr_mmaps
; i
++) {
235 union perf_event
*event
;
237 while ((event
= perf_evlist__mmap_read(evlist
, i
)) != NULL
) {
238 const u32 type
= event
->header
.type
;
239 tracepoint_handler handler
;
240 struct perf_sample sample
;
245 case PERF_RECORD_SAMPLE
:
247 case PERF_RECORD_LOST
:
248 printf("LOST %" PRIu64
" events!\n", event
->lost
.lost
);
251 printf("Unexpected %s event, skipping...\n",
252 perf_event__name(type
));
256 err
= perf_evlist__parse_sample(evlist
, event
, &sample
);
258 printf("Can't parse sample, err = %d, skipping...\n", err
);
262 evsel
= perf_evlist__id2evsel(evlist
, sample
.id
);
264 printf("Unknown tp ID %" PRIu64
", skipping...\n", sample
.id
);
268 if (evlist
->threads
->map
[0] == -1 || evlist
->threads
->nr
> 1)
269 printf("%d ", sample
.tid
);
271 if (sample
.raw_data
== NULL
) {
272 printf("%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
273 perf_evsel__name(evsel
), sample
.tid
,
274 sample
.cpu
, sample
.raw_size
);
278 handler
= evsel
->handler
.func
;
279 handler(trace
, evsel
, &sample
);
283 if (nr_events
== before
)
284 poll(evlist
->pollfd
, evlist
->nr_fds
, -1);
289 perf_evlist__delete(evlist
);
294 int cmd_trace(int argc
, const char **argv
, const char *prefix __maybe_unused
)
296 const char * const trace_usage
[] = {
297 "perf trace [<options>]",
300 struct trace trace
= {
301 .audit_machine
= audit_detect_machine(),
310 .user_freq
= UINT_MAX
,
311 .user_interval
= ULLONG_MAX
,
316 const struct option trace_options
[] = {
317 OPT_STRING('p', "pid", &trace
.opts
.target
.pid
, "pid",
318 "trace events on existing process id"),
319 OPT_STRING(0, "tid", &trace
.opts
.target
.tid
, "tid",
320 "trace events on existing thread id"),
321 OPT_BOOLEAN(0, "all-cpus", &trace
.opts
.target
.system_wide
,
322 "system-wide collection from all CPUs"),
323 OPT_STRING(0, "cpu", &trace
.opts
.target
.cpu_list
, "cpu",
324 "list of cpus to monitor"),
325 OPT_BOOLEAN(0, "no-inherit", &trace
.opts
.no_inherit
,
326 "child tasks do not inherit counters"),
327 OPT_UINTEGER(0, "mmap-pages", &trace
.opts
.mmap_pages
,
328 "number of mmap data pages"),
329 OPT_STRING(0, "uid", &trace
.opts
.target
.uid_str
, "user",
335 argc
= parse_options(argc
, argv
, trace_options
, trace_usage
, 0);
337 usage_with_options(trace_usage
, trace_options
);
339 err
= perf_target__parse_uid(&trace
.opts
.target
);
342 perf_target__strerror(&trace
.opts
.target
, err
, bf
, sizeof(bf
));
347 return trace__run(&trace
);