2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include <sys/types.h>
28 #include <urcu/list.h>
30 #include "../command.h"
32 #define PRINT_LINE_LEN 80
34 static char *opt_channel_name
;
35 static char *opt_session_name
;
36 static int opt_kernel
;
37 static int opt_userspace
;
38 static char *opt_type
;
40 /* Not implemented yet */
41 static char *opt_cmd_name
;
52 static struct lttng_handle
*handle
;
55 * Taken from the LTTng ABI
59 CONTEXT_PERF_COUNTER
= 1, /* Backward compat. */
68 CONTEXT_PTHREAD_ID
= 10,
69 CONTEXT_HOSTNAME
= 11,
71 CONTEXT_PERF_CPU_COUNTER
= 13,
72 CONTEXT_PERF_THREAD_COUNTER
= 14,
76 * Taken from the Perf ABI (all enum perf_*)
79 PERF_TYPE_HARDWARE
= 0,
80 PERF_TYPE_SOFTWARE
= 1,
81 PERF_TYPE_HW_CACHE
= 3,
84 enum perf_count_hard
{
85 PERF_COUNT_HW_CPU_CYCLES
= 0,
86 PERF_COUNT_HW_INSTRUCTIONS
= 1,
87 PERF_COUNT_HW_CACHE_REFERENCES
= 2,
88 PERF_COUNT_HW_CACHE_MISSES
= 3,
89 PERF_COUNT_HW_BRANCH_INSTRUCTIONS
= 4,
90 PERF_COUNT_HW_BRANCH_MISSES
= 5,
91 PERF_COUNT_HW_BUS_CYCLES
= 6,
92 PERF_COUNT_HW_STALLED_CYCLES_FRONTEND
= 7,
93 PERF_COUNT_HW_STALLED_CYCLES_BACKEND
= 8,
96 enum perf_count_soft
{
97 PERF_COUNT_SW_CPU_CLOCK
= 0,
98 PERF_COUNT_SW_TASK_CLOCK
= 1,
99 PERF_COUNT_SW_PAGE_FAULTS
= 2,
100 PERF_COUNT_SW_CONTEXT_SWITCHES
= 3,
101 PERF_COUNT_SW_CPU_MIGRATIONS
= 4,
102 PERF_COUNT_SW_PAGE_FAULTS_MIN
= 5,
103 PERF_COUNT_SW_PAGE_FAULTS_MAJ
= 6,
104 PERF_COUNT_SW_ALIGNMENT_FAULTS
= 7,
105 PERF_COUNT_SW_EMULATION_FAULTS
= 8,
109 * Generalized hardware cache events:
111 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x
112 * { read, write, prefetch } x
113 * { accesses, misses }
115 enum perf_hw_cache_id
{
116 PERF_COUNT_HW_CACHE_L1D
= 0,
117 PERF_COUNT_HW_CACHE_L1I
= 1,
118 PERF_COUNT_HW_CACHE_LL
= 2,
119 PERF_COUNT_HW_CACHE_DTLB
= 3,
120 PERF_COUNT_HW_CACHE_ITLB
= 4,
121 PERF_COUNT_HW_CACHE_BPU
= 5,
123 PERF_COUNT_HW_CACHE_MAX
, /* non-ABI */
126 enum perf_hw_cache_op_id
{
127 PERF_COUNT_HW_CACHE_OP_READ
= 0,
128 PERF_COUNT_HW_CACHE_OP_WRITE
= 1,
129 PERF_COUNT_HW_CACHE_OP_PREFETCH
= 2,
131 PERF_COUNT_HW_CACHE_OP_MAX
, /* non-ABI */
134 enum perf_hw_cache_op_result_id
{
135 PERF_COUNT_HW_CACHE_RESULT_ACCESS
= 0,
136 PERF_COUNT_HW_CACHE_RESULT_MISS
= 1,
138 PERF_COUNT_HW_CACHE_RESULT_MAX
, /* non-ABI */
141 static struct poptOption long_options
[] = {
142 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
143 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
144 {"session", 's', POPT_ARG_STRING
, &opt_session_name
, 0, 0, 0},
145 {"channel", 'c', POPT_ARG_STRING
, &opt_channel_name
, 0, 0, 0},
146 {"kernel", 'k', POPT_ARG_VAL
, &opt_kernel
, 1, 0, 0},
147 {"userspace", 'u', POPT_ARG_NONE
, 0, OPT_USERSPACE
, 0, 0},
148 {"type", 't', POPT_ARG_STRING
, &opt_type
, OPT_TYPE
, 0, 0},
149 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
150 {0, 0, 0, 0, 0, 0, 0}
156 #define PERF_HW(optstr, name, type, hide) \
158 optstr, type, hide, \
159 .u.perf = { PERF_TYPE_HARDWARE, PERF_COUNT_HW_##name, },\
162 #define PERF_SW(optstr, name, type, hide) \
164 optstr, type, hide, \
165 .u.perf = { PERF_TYPE_SOFTWARE, PERF_COUNT_SW_##name, },\
168 #define _PERF_HW_CACHE(optstr, name, type, op, result, hide) \
170 optstr, type, hide, \
172 PERF_TYPE_HW_CACHE, \
173 (uint64_t) PERF_COUNT_HW_CACHE_##name \
174 | ((uint64_t) PERF_COUNT_HW_CACHE_OP_##op << 8) \
175 | ((uint64_t) PERF_COUNT_HW_CACHE_RESULT_##result << 16), \
179 #define PERF_HW_CACHE(optstr, name, type, hide) \
180 _PERF_HW_CACHE(optstr "-loads", name, type, \
181 READ, ACCESS, hide), \
182 _PERF_HW_CACHE(optstr "-load-misses", name, type, \
184 _PERF_HW_CACHE(optstr "-stores", name, type, \
185 WRITE, ACCESS, hide), \
186 _PERF_HW_CACHE(optstr "-store-misses", name, type, \
187 WRITE, MISS, hide), \
188 _PERF_HW_CACHE(optstr "-prefetches", name, type, \
189 PREFETCH, ACCESS, hide), \
190 _PERF_HW_CACHE(optstr "-prefetch-misses", name, type, \
191 PREFETCH, MISS, hide)
194 const struct ctx_opts
{
196 enum context_type ctx_type
;
197 int hide_help
; /* Hide from --help */
205 { "pid", CONTEXT_PID
},
206 { "procname", CONTEXT_PROCNAME
},
207 { "prio", CONTEXT_PRIO
},
208 { "nice", CONTEXT_NICE
},
209 { "vpid", CONTEXT_VPID
},
210 { "tid", CONTEXT_TID
},
211 { "pthread_id", CONTEXT_PTHREAD_ID
},
212 { "vtid", CONTEXT_VTID
},
213 { "ppid", CONTEXT_PPID
},
214 { "vppid", CONTEXT_VPPID
},
215 { "hostname", CONTEXT_HOSTNAME
},
216 { "ip", CONTEXT_IP
},
220 /* Perf per-CPU counters */
221 PERF_HW("perf:cpu:cpu-cycles", CPU_CYCLES
,
222 CONTEXT_PERF_CPU_COUNTER
, 0),
223 PERF_HW("perf:cpu:cycles", CPU_CYCLES
,
224 CONTEXT_PERF_CPU_COUNTER
, 0),
225 PERF_HW("perf:cpu:stalled-cycles-frontend", STALLED_CYCLES_FRONTEND
,
226 CONTEXT_PERF_CPU_COUNTER
, 0),
227 PERF_HW("perf:cpu:idle-cycles-frontend", STALLED_CYCLES_FRONTEND
,
228 CONTEXT_PERF_CPU_COUNTER
, 0),
229 PERF_HW("perf:cpu:stalled-cycles-backend", STALLED_CYCLES_BACKEND
,
230 CONTEXT_PERF_CPU_COUNTER
, 0),
231 PERF_HW("perf:cpu:idle-cycles-backend", STALLED_CYCLES_BACKEND
,
232 CONTEXT_PERF_CPU_COUNTER
, 0),
233 PERF_HW("perf:cpu:instructions", INSTRUCTIONS
,
234 CONTEXT_PERF_CPU_COUNTER
, 0),
235 PERF_HW("perf:cpu:cache-references", CACHE_REFERENCES
,
236 CONTEXT_PERF_CPU_COUNTER
, 0),
237 PERF_HW("perf:cpu:cache-misses", CACHE_MISSES
,
238 CONTEXT_PERF_CPU_COUNTER
, 0),
239 PERF_HW("perf:cpu:branch-instructions", BRANCH_INSTRUCTIONS
,
240 CONTEXT_PERF_CPU_COUNTER
, 0),
241 PERF_HW("perf:cpu:branches", BRANCH_INSTRUCTIONS
,
242 CONTEXT_PERF_CPU_COUNTER
, 0),
243 PERF_HW("perf:cpu:branch-misses", BRANCH_MISSES
,
244 CONTEXT_PERF_CPU_COUNTER
, 0),
245 PERF_HW("perf:cpu:bus-cycles", BUS_CYCLES
,
246 CONTEXT_PERF_CPU_COUNTER
, 0),
248 PERF_HW_CACHE("perf:cpu:L1-dcache", L1D
,
249 CONTEXT_PERF_CPU_COUNTER
, 0),
250 PERF_HW_CACHE("perf:cpu:L1-icache", L1I
,
251 CONTEXT_PERF_CPU_COUNTER
, 0),
252 PERF_HW_CACHE("perf:cpu:LLC", LL
,
253 CONTEXT_PERF_CPU_COUNTER
, 0),
254 PERF_HW_CACHE("perf:cpu:dTLB", DTLB
,
255 CONTEXT_PERF_CPU_COUNTER
, 0),
256 _PERF_HW_CACHE("perf:cpu:iTLB-loads", ITLB
,
257 CONTEXT_PERF_CPU_COUNTER
, READ
, ACCESS
, 0),
258 _PERF_HW_CACHE("perf:cpu:iTLB-load-misses", ITLB
,
259 CONTEXT_PERF_CPU_COUNTER
, READ
, MISS
, 0),
260 _PERF_HW_CACHE("perf:cpu:branch-loads", BPU
,
261 CONTEXT_PERF_CPU_COUNTER
, READ
, ACCESS
, 0),
262 _PERF_HW_CACHE("perf:cpu:branch-load-misses", BPU
,
263 CONTEXT_PERF_CPU_COUNTER
, READ
, MISS
, 0),
265 PERF_SW("perf:cpu:cpu-clock", CPU_CLOCK
,
266 CONTEXT_PERF_CPU_COUNTER
, 0),
267 PERF_SW("perf:cpu:task-clock", TASK_CLOCK
,
268 CONTEXT_PERF_CPU_COUNTER
, 0),
269 PERF_SW("perf:cpu:page-fault", PAGE_FAULTS
,
270 CONTEXT_PERF_CPU_COUNTER
, 0),
271 PERF_SW("perf:cpu:faults", PAGE_FAULTS
,
272 CONTEXT_PERF_CPU_COUNTER
, 0),
273 PERF_SW("perf:cpu:major-faults", PAGE_FAULTS_MAJ
,
274 CONTEXT_PERF_CPU_COUNTER
, 0),
275 PERF_SW("perf:cpu:minor-faults", PAGE_FAULTS_MIN
,
276 CONTEXT_PERF_CPU_COUNTER
, 0),
277 PERF_SW("perf:cpu:context-switches", CONTEXT_SWITCHES
,
278 CONTEXT_PERF_CPU_COUNTER
, 0),
279 PERF_SW("perf:cpu:cs", CONTEXT_SWITCHES
,
280 CONTEXT_PERF_CPU_COUNTER
, 0),
281 PERF_SW("perf:cpu:cpu-migrations", CPU_MIGRATIONS
,
282 CONTEXT_PERF_CPU_COUNTER
, 0),
283 PERF_SW("perf:cpu:migrations", CPU_MIGRATIONS
,
284 CONTEXT_PERF_CPU_COUNTER
, 0),
285 PERF_SW("perf:cpu:alignment-faults", ALIGNMENT_FAULTS
,
286 CONTEXT_PERF_CPU_COUNTER
, 0),
287 PERF_SW("perf:cpu:emulation-faults", EMULATION_FAULTS
,
288 CONTEXT_PERF_CPU_COUNTER
, 0),
290 /* Perf per-thread counters */
291 PERF_HW("perf:thread:cpu-cycles", CPU_CYCLES
,
292 CONTEXT_PERF_THREAD_COUNTER
, 0),
293 PERF_HW("perf:thread:cycles", CPU_CYCLES
,
294 CONTEXT_PERF_THREAD_COUNTER
, 0),
295 PERF_HW("perf:thread:stalled-cycles-frontend", STALLED_CYCLES_FRONTEND
,
296 CONTEXT_PERF_THREAD_COUNTER
, 0),
297 PERF_HW("perf:thread:idle-cycles-frontend", STALLED_CYCLES_FRONTEND
,
298 CONTEXT_PERF_THREAD_COUNTER
, 0),
299 PERF_HW("perf:thread:stalled-cycles-backend", STALLED_CYCLES_BACKEND
,
300 CONTEXT_PERF_THREAD_COUNTER
, 0),
301 PERF_HW("perf:thread:idle-cycles-backend", STALLED_CYCLES_BACKEND
,
302 CONTEXT_PERF_THREAD_COUNTER
, 0),
303 PERF_HW("perf:thread:instructions", INSTRUCTIONS
,
304 CONTEXT_PERF_THREAD_COUNTER
, 0),
305 PERF_HW("perf:thread:cache-references", CACHE_REFERENCES
,
306 CONTEXT_PERF_THREAD_COUNTER
, 0),
307 PERF_HW("perf:thread:cache-misses", CACHE_MISSES
,
308 CONTEXT_PERF_THREAD_COUNTER
, 0),
309 PERF_HW("perf:thread:branch-instructions", BRANCH_INSTRUCTIONS
,
310 CONTEXT_PERF_THREAD_COUNTER
, 0),
311 PERF_HW("perf:thread:branches", BRANCH_INSTRUCTIONS
,
312 CONTEXT_PERF_THREAD_COUNTER
, 0),
313 PERF_HW("perf:thread:branch-misses", BRANCH_MISSES
,
314 CONTEXT_PERF_THREAD_COUNTER
, 0),
315 PERF_HW("perf:thread:bus-cycles", BUS_CYCLES
,
316 CONTEXT_PERF_THREAD_COUNTER
, 0),
318 PERF_HW_CACHE("perf:thread:L1-dcache", L1D
,
319 CONTEXT_PERF_THREAD_COUNTER
, 0),
320 PERF_HW_CACHE("perf:thread:L1-icache", L1I
,
321 CONTEXT_PERF_THREAD_COUNTER
, 0),
322 PERF_HW_CACHE("perf:thread:LLC", LL
,
323 CONTEXT_PERF_THREAD_COUNTER
, 0),
324 PERF_HW_CACHE("perf:thread:dTLB", DTLB
,
325 CONTEXT_PERF_THREAD_COUNTER
, 0),
326 _PERF_HW_CACHE("perf:thread:iTLB-loads", ITLB
,
327 CONTEXT_PERF_THREAD_COUNTER
, READ
, ACCESS
, 0),
328 _PERF_HW_CACHE("perf:thread:iTLB-load-misses", ITLB
,
329 CONTEXT_PERF_THREAD_COUNTER
, READ
, MISS
, 0),
330 _PERF_HW_CACHE("perf:thread:branch-loads", BPU
,
331 CONTEXT_PERF_THREAD_COUNTER
, READ
, ACCESS
, 0),
332 _PERF_HW_CACHE("perf:thread:branch-load-misses", BPU
,
333 CONTEXT_PERF_THREAD_COUNTER
, READ
, MISS
, 0),
335 PERF_SW("perf:thread:cpu-clock", CPU_CLOCK
,
336 CONTEXT_PERF_THREAD_COUNTER
, 0),
337 PERF_SW("perf:thread:task-clock", TASK_CLOCK
,
338 CONTEXT_PERF_THREAD_COUNTER
, 0),
339 PERF_SW("perf:thread:page-fault", PAGE_FAULTS
,
340 CONTEXT_PERF_THREAD_COUNTER
, 0),
341 PERF_SW("perf:thread:faults", PAGE_FAULTS
,
342 CONTEXT_PERF_THREAD_COUNTER
, 0),
343 PERF_SW("perf:thread:major-faults", PAGE_FAULTS_MAJ
,
344 CONTEXT_PERF_THREAD_COUNTER
, 0),
345 PERF_SW("perf:thread:minor-faults", PAGE_FAULTS_MIN
,
346 CONTEXT_PERF_THREAD_COUNTER
, 0),
347 PERF_SW("perf:thread:context-switches", CONTEXT_SWITCHES
,
348 CONTEXT_PERF_THREAD_COUNTER
, 0),
349 PERF_SW("perf:thread:cs", CONTEXT_SWITCHES
,
350 CONTEXT_PERF_THREAD_COUNTER
, 0),
351 PERF_SW("perf:thread:cpu-migrations", CPU_MIGRATIONS
,
352 CONTEXT_PERF_THREAD_COUNTER
, 0),
353 PERF_SW("perf:thread:migrations", CPU_MIGRATIONS
,
354 CONTEXT_PERF_THREAD_COUNTER
, 0),
355 PERF_SW("perf:thread:alignment-faults", ALIGNMENT_FAULTS
,
356 CONTEXT_PERF_THREAD_COUNTER
, 0),
357 PERF_SW("perf:thread:emulation-faults", EMULATION_FAULTS
,
358 CONTEXT_PERF_THREAD_COUNTER
, 0),
361 * Perf per-CPU counters, backward compatibilty for names.
362 * Hidden from help listing.
364 PERF_HW("perf:cpu-cycles", CPU_CYCLES
,
365 CONTEXT_PERF_COUNTER
, 1),
366 PERF_HW("perf:cycles", CPU_CYCLES
,
367 CONTEXT_PERF_COUNTER
, 1),
368 PERF_HW("perf:stalled-cycles-frontend", STALLED_CYCLES_FRONTEND
,
369 CONTEXT_PERF_COUNTER
, 1),
370 PERF_HW("perf:idle-cycles-frontend", STALLED_CYCLES_FRONTEND
,
371 CONTEXT_PERF_COUNTER
, 1),
372 PERF_HW("perf:stalled-cycles-backend", STALLED_CYCLES_BACKEND
,
373 CONTEXT_PERF_COUNTER
, 1),
374 PERF_HW("perf:idle-cycles-backend", STALLED_CYCLES_BACKEND
,
375 CONTEXT_PERF_COUNTER
, 1),
376 PERF_HW("perf:instructions", INSTRUCTIONS
,
377 CONTEXT_PERF_COUNTER
, 1),
378 PERF_HW("perf:cache-references", CACHE_REFERENCES
,
379 CONTEXT_PERF_COUNTER
, 1),
380 PERF_HW("perf:cache-misses", CACHE_MISSES
,
381 CONTEXT_PERF_COUNTER
, 1),
382 PERF_HW("perf:branch-instructions", BRANCH_INSTRUCTIONS
,
383 CONTEXT_PERF_COUNTER
, 1),
384 PERF_HW("perf:branches", BRANCH_INSTRUCTIONS
,
385 CONTEXT_PERF_COUNTER
, 1),
386 PERF_HW("perf:branch-misses", BRANCH_MISSES
,
387 CONTEXT_PERF_COUNTER
, 1),
388 PERF_HW("perf:bus-cycles", BUS_CYCLES
,
389 CONTEXT_PERF_COUNTER
, 1),
391 PERF_HW_CACHE("perf:L1-dcache", L1D
,
392 CONTEXT_PERF_COUNTER
, 1),
393 PERF_HW_CACHE("perf:L1-icache", L1I
,
394 CONTEXT_PERF_COUNTER
, 1),
395 PERF_HW_CACHE("perf:LLC", LL
,
396 CONTEXT_PERF_COUNTER
, 1),
397 PERF_HW_CACHE("perf:dTLB", DTLB
,
398 CONTEXT_PERF_COUNTER
, 1),
399 _PERF_HW_CACHE("perf:iTLB-loads", ITLB
,
400 CONTEXT_PERF_COUNTER
, READ
, ACCESS
, 1),
401 _PERF_HW_CACHE("perf:iTLB-load-misses", ITLB
,
402 CONTEXT_PERF_COUNTER
, READ
, MISS
, 1),
403 _PERF_HW_CACHE("perf:branch-loads", BPU
,
404 CONTEXT_PERF_COUNTER
, READ
, ACCESS
, 1),
405 _PERF_HW_CACHE("perf:branch-load-misses", BPU
,
406 CONTEXT_PERF_COUNTER
, READ
, MISS
, 1),
408 PERF_SW("perf:cpu-clock", CPU_CLOCK
,
409 CONTEXT_PERF_COUNTER
, 1),
410 PERF_SW("perf:task-clock", TASK_CLOCK
,
411 CONTEXT_PERF_COUNTER
, 1),
412 PERF_SW("perf:page-fault", PAGE_FAULTS
,
413 CONTEXT_PERF_COUNTER
, 1),
414 PERF_SW("perf:faults", PAGE_FAULTS
,
415 CONTEXT_PERF_COUNTER
, 1),
416 PERF_SW("perf:major-faults", PAGE_FAULTS_MAJ
,
417 CONTEXT_PERF_COUNTER
, 1),
418 PERF_SW("perf:minor-faults", PAGE_FAULTS_MIN
,
419 CONTEXT_PERF_COUNTER
, 1),
420 PERF_SW("perf:context-switches", CONTEXT_SWITCHES
,
421 CONTEXT_PERF_COUNTER
, 1),
422 PERF_SW("perf:cs", CONTEXT_SWITCHES
,
423 CONTEXT_PERF_COUNTER
, 1),
424 PERF_SW("perf:cpu-migrations", CPU_MIGRATIONS
,
425 CONTEXT_PERF_COUNTER
, 1),
426 PERF_SW("perf:migrations", CPU_MIGRATIONS
,
427 CONTEXT_PERF_COUNTER
, 1),
428 PERF_SW("perf:alignment-faults", ALIGNMENT_FAULTS
,
429 CONTEXT_PERF_COUNTER
, 1),
430 PERF_SW("perf:emulation-faults", EMULATION_FAULTS
,
431 CONTEXT_PERF_COUNTER
, 1),
433 { NULL
, -1 }, /* Closure */
437 #undef _PERF_HW_CACHE
442 * Context type for command line option parsing.
445 const struct ctx_opts
*opt
;
446 struct cds_list_head list
;
450 * List of context type. Use to enable multiple context on a single command
453 struct ctx_type_list
{
454 struct cds_list_head head
;
456 .head
= CDS_LIST_HEAD_INIT(ctx_type_list
.head
),
460 * Pretty print context type.
462 static void print_ctx_type(FILE *ofp
)
464 const char *indent
= " ";
465 int indent_len
= strlen(indent
);
468 fprintf(ofp
, "%s", indent
);
470 while (ctx_opts
[i
].symbol
!= NULL
) {
471 if (!ctx_opts
[i
].hide_help
) {
472 if (len
> indent_len
) {
473 if (len
+ strlen(ctx_opts
[i
].symbol
) + 2
476 fprintf(ofp
, "%s", indent
);
479 len
+= fprintf(ofp
, ", ");
482 len
+= fprintf(ofp
, "%s", ctx_opts
[i
].symbol
);
491 static void usage(FILE *ofp
)
493 fprintf(ofp
, "usage: lttng add-context -t TYPE [-k|-u] [OPTIONS]\n");
495 fprintf(ofp
, "If no channel is given (-c), the context is added to\n");
496 fprintf(ofp
, "all channels.\n");
498 fprintf(ofp
, "Otherwise the context is added only to the channel (-c).\n");
500 fprintf(ofp
, "Exactly one domain (-k or -u) must be specified.\n");
502 fprintf(ofp
, "Options:\n");
503 fprintf(ofp
, " -h, --help Show this help\n");
504 fprintf(ofp
, " --list-options Simple listing of options\n");
505 fprintf(ofp
, " -s, --session NAME Apply to session name\n");
506 fprintf(ofp
, " -c, --channel NAME Apply to channel\n");
507 fprintf(ofp
, " -k, --kernel Apply to the kernel tracer\n");
508 fprintf(ofp
, " -u, --userspace Apply to the user-space tracer\n");
510 fprintf(ofp
, "Context:\n");
511 fprintf(ofp
, " -t, --type TYPE Context type. You can repeat that option on\n");
512 fprintf(ofp
, " the command line to specify multiple contexts at once.\n");
513 fprintf(ofp
, " (--kernel preempts --userspace)\n");
514 fprintf(ofp
, " TYPE can be one of the strings below:\n");
517 fprintf(ofp
, "Example:\n");
518 fprintf(ofp
, "This command will add the context information 'prio' and two per-cpu\n"
519 "perf counters (hardware branch misses and cache misses), to all channels\n"
520 "in the trace data output:\n");
521 fprintf(ofp
, "# lttng add-context -k -t prio -t perf:cpu:branch-misses -t perf:cpu:cache-misses\n");
526 * Find context numerical value from string.
528 static int find_ctx_type_idx(const char *opt
)
532 while (ctx_opts
[i
].symbol
!= NULL
) {
533 if (strcmp(opt
, ctx_opts
[i
].symbol
) == 0) {
545 * Add context to channel or event.
547 static int add_context(char *session_name
)
549 int ret
= CMD_SUCCESS
, warn
= 0;
550 struct lttng_event_context context
;
551 struct lttng_domain dom
;
552 struct ctx_type
*type
;
555 memset(&context
, 0, sizeof(context
));
556 memset(&dom
, 0, sizeof(dom
));
559 dom
.type
= LTTNG_DOMAIN_KERNEL
;
560 } else if (opt_userspace
) {
561 dom
.type
= LTTNG_DOMAIN_UST
;
563 print_missing_domain();
568 handle
= lttng_create_handle(session_name
, &dom
);
569 if (handle
== NULL
) {
574 /* Iterate over all the context types given */
575 cds_list_for_each_entry(type
, &ctx_type_list
.head
, list
) {
576 context
.ctx
= (enum lttng_event_context_type
) type
->opt
->ctx_type
;
577 switch (context
.ctx
) {
578 case LTTNG_EVENT_CONTEXT_PERF_COUNTER
:
579 case LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER
:
580 case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER
:
581 context
.u
.perf_counter
.type
= type
->opt
->u
.perf
.type
;
582 context
.u
.perf_counter
.config
= type
->opt
->u
.perf
.config
;
583 strncpy(context
.u
.perf_counter
.name
, type
->opt
->symbol
,
584 LTTNG_SYMBOL_NAME_LEN
);
585 context
.u
.perf_counter
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
586 /* Replace : and - by _ */
587 while ((ptr
= strchr(context
.u
.perf_counter
.name
, '-')) != NULL
) {
590 while ((ptr
= strchr(context
.u
.perf_counter
.name
, ':')) != NULL
) {
597 DBG("Adding context...");
599 ret
= lttng_add_context(handle
, &context
, NULL
, opt_channel_name
);
601 ERR("%s: %s", type
->opt
->symbol
, lttng_strerror(ret
));
605 if (opt_channel_name
) {
606 MSG("%s context %s added to channel %s",
607 opt_kernel
? "kernel" : "UST", type
->opt
->symbol
,
610 MSG("%s context %s added to all channels",
611 opt_kernel
? "kernel" : "UST", type
->opt
->symbol
)
619 lttng_destroy_handle(handle
);
622 * This means that at least one add_context failed and tells the user to
623 * look on stderr for error(s).
632 * Add context to channel or event.
634 int cmd_add_context(int argc
, const char **argv
)
636 int index
, opt
, ret
= CMD_SUCCESS
;
637 static poptContext pc
;
638 struct ctx_type
*type
, *tmptype
;
639 char *session_name
= NULL
;
647 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
648 poptReadDefaultConfig(pc
, 0);
650 while ((opt
= poptGetNextOpt(pc
)) != -1) {
657 * Look up the index of opt_type in ctx_opts[] first, so we don't
658 * have to free(type) on failure.
660 index
= find_ctx_type_idx(opt_type
);
662 ERR("Unknown context type %s", opt_type
);
667 type
= malloc(sizeof(struct ctx_type
));
669 perror("malloc ctx_type");
674 type
->opt
= &ctx_opts
[index
];
675 if (type
->opt
->symbol
== NULL
) {
676 ERR("Unknown context type %s", opt_type
);
681 cds_list_add_tail(&type
->list
, &ctx_type_list
.head
);
687 opt_cmd_name
= poptGetOptArg(pc
);
690 case OPT_LIST_OPTIONS
:
691 list_cmd_options(stdout
, long_options
);
701 ERR("Missing mandatory -t TYPE");
707 if (!opt_session_name
) {
708 session_name
= get_session_name();
709 if (session_name
== NULL
) {
714 session_name
= opt_session_name
;
717 ret
= add_context(session_name
);
719 if (!opt_session_name
) {
724 /* Cleanup allocated memory */
725 cds_list_for_each_entry_safe(type
, tmptype
, &ctx_type_list
.head
, list
) {