Lines Matching +full:entry +full:- +full:latency
1 // SPDX-License-Identifier: GPL-2.0-only
3 * builtin-ftrace.c
26 #include <subcmd/parse-options.h>
40 #include "util/parse-sublevel-options.h"
67 workload_exec_errno = info->si_value.sival_int; in ftrace__workload_exec_failed_signal()
137 int fd, ret = -1; in __write_tracing_file()
146 return -1; in __write_tracing_file()
199 int ret = -1; in read_tracing_file_to_stdout()
204 return -1; in read_tracing_file_to_stdout()
246 return -1; in read_tracing_file_by_line()
253 return -1; in read_tracing_file_by_line()
256 while (getline(&line, &len, fp) != -1) { in read_tracing_file_by_line()
274 return -1; in write_tracing_file_int()
285 return -1; in write_tracing_option_file()
297 write_tracing_option_file("function-fork", "0"); in reset_tracing_options()
299 write_tracing_option_file("sleep-time", "1"); in reset_tracing_options()
300 write_tracing_option_file("funcgraph-irqs", "1"); in reset_tracing_options()
301 write_tracing_option_file("funcgraph-proc", "0"); in reset_tracing_options()
302 write_tracing_option_file("funcgraph-abstime", "0"); in reset_tracing_options()
303 write_tracing_option_file("funcgraph-tail", "0"); in reset_tracing_options()
304 write_tracing_option_file("funcgraph-args", "0"); in reset_tracing_options()
305 write_tracing_option_file("funcgraph-retval", "0"); in reset_tracing_options()
306 write_tracing_option_file("funcgraph-retval-hex", "0"); in reset_tracing_options()
307 write_tracing_option_file("funcgraph-retaddr", "0"); in reset_tracing_options()
308 write_tracing_option_file("latency-format", "0"); in reset_tracing_options()
309 write_tracing_option_file("irq-info", "0"); in reset_tracing_options()
315 return -1; in reset_tracing_files()
318 return -1; in reset_tracing_files()
321 return -1; in reset_tracing_files()
324 return -1; in reset_tracing_files()
327 return -1; in reset_tracing_files()
330 return -1; in reset_tracing_files()
352 char dirname[] = "instances/perf-ftrace-XXXXXX"; in init_tracing_instance()
358 strncpy(tracing_instance, path, sizeof(tracing_instance) - 1); in init_tracing_instance()
367 return -1; in init_tracing_instance()
375 if (target__has_cpu(&ftrace->target)) in set_tracing_pid()
378 for (i = 0; i < perf_thread_map__nr(ftrace->evlist->core.threads); i++) { in set_tracing_pid()
380 perf_thread_map__pid(ftrace->evlist->core.threads, i)); in set_tracing_pid()
382 return -1; in set_tracing_pid()
394 last_cpu = perf_cpu_map__cpu(cpumap, perf_cpu_map__nr(cpumap) - 1).cpu; in set_tracing_cpumask()
401 return -1; in set_tracing_cpumask()
414 struct perf_cpu_map *cpumap = ftrace->evlist->core.user_requested_cpus; in set_tracing_cpu()
416 if (!target__has_cpu(&ftrace->target)) in set_tracing_cpu()
424 if (!ftrace->func_stack_trace) in set_tracing_func_stack_trace()
428 return -1; in set_tracing_func_stack_trace()
435 if (!ftrace->func_irq_info) in set_tracing_func_irqinfo()
438 if (write_tracing_option_file("irq-info", "1") < 0) in set_tracing_func_irqinfo()
439 return -1; in set_tracing_func_irqinfo()
459 if (append_tracing_file(filter_file, pos->name) < 0) in __set_tracing_filter()
460 return -1; in __set_tracing_filter()
470 ret = __set_tracing_filter("set_ftrace_filter", &ftrace->filters); in set_tracing_filters()
474 ret = __set_tracing_filter("set_ftrace_notrace", &ftrace->notrace); in set_tracing_filters()
478 ret = __set_tracing_filter("set_graph_function", &ftrace->graph_funcs); in set_tracing_filters()
483 __set_tracing_filter("set_graph_notrace", &ftrace->nograph_funcs); in set_tracing_filters()
498 if (ftrace->graph_depth == 0) in set_tracing_depth()
501 if (ftrace->graph_depth < 0) { in set_tracing_depth()
502 pr_err("invalid graph depth: %d\n", ftrace->graph_depth); in set_tracing_depth()
503 return -1; in set_tracing_depth()
506 if (write_tracing_file_int("max_graph_depth", ftrace->graph_depth) < 0) in set_tracing_depth()
507 return -1; in set_tracing_depth()
516 if (ftrace->percpu_buffer_size == 0) in set_tracing_percpu_buffer_size()
520 ftrace->percpu_buffer_size / 1024); in set_tracing_percpu_buffer_size()
529 if (!ftrace->inherit) in set_tracing_trace_inherit()
532 if (write_tracing_option_file("function-fork", "1") < 0) in set_tracing_trace_inherit()
533 return -1; in set_tracing_trace_inherit()
540 if (!ftrace->graph_nosleep_time) in set_tracing_sleep_time()
543 if (write_tracing_option_file("sleep-time", "0") < 0) in set_tracing_sleep_time()
544 return -1; in set_tracing_sleep_time()
551 if (ftrace->graph_args) { in set_tracing_funcgraph_args()
552 if (write_tracing_option_file("funcgraph-args", "1") < 0) in set_tracing_funcgraph_args()
553 return -1; in set_tracing_funcgraph_args()
561 if (ftrace->graph_retval || ftrace->graph_retval_hex) { in set_tracing_funcgraph_retval()
562 if (write_tracing_option_file("funcgraph-retval", "1") < 0) in set_tracing_funcgraph_retval()
563 return -1; in set_tracing_funcgraph_retval()
566 if (ftrace->graph_retval_hex) { in set_tracing_funcgraph_retval()
567 if (write_tracing_option_file("funcgraph-retval-hex", "1") < 0) in set_tracing_funcgraph_retval()
568 return -1; in set_tracing_funcgraph_retval()
576 if (ftrace->graph_retaddr) { in set_tracing_funcgraph_retaddr()
577 if (write_tracing_option_file("funcgraph-retaddr", "1") < 0) in set_tracing_funcgraph_retaddr()
578 return -1; in set_tracing_funcgraph_retaddr()
586 if (!ftrace->graph_noirqs) in set_tracing_funcgraph_irqs()
589 if (write_tracing_option_file("funcgraph-irqs", "0") < 0) in set_tracing_funcgraph_irqs()
590 return -1; in set_tracing_funcgraph_irqs()
597 if (!ftrace->graph_verbose) in set_tracing_funcgraph_verbose()
600 if (write_tracing_option_file("funcgraph-proc", "1") < 0) in set_tracing_funcgraph_verbose()
601 return -1; in set_tracing_funcgraph_verbose()
603 if (write_tracing_option_file("funcgraph-abstime", "1") < 0) in set_tracing_funcgraph_verbose()
604 return -1; in set_tracing_funcgraph_verbose()
606 if (write_tracing_option_file("latency-format", "1") < 0) in set_tracing_funcgraph_verbose()
607 return -1; in set_tracing_funcgraph_verbose()
614 if (!ftrace->graph_tail) in set_tracing_funcgraph_tail()
617 if (write_tracing_option_file("funcgraph-tail", "1") < 0) in set_tracing_funcgraph_tail()
618 return -1; in set_tracing_funcgraph_tail()
627 if (ftrace->graph_thresh == 0) in set_tracing_thresh()
630 ret = write_tracing_file_int("tracing_thresh", ftrace->graph_thresh); in set_tracing_thresh()
641 return -1; in set_tracing_options()
646 return -1; in set_tracing_options()
651 return -1; in set_tracing_options()
655 pr_err("failed to set tracing option irq-info\n"); in set_tracing_options()
656 return -1; in set_tracing_options()
661 return -1; in set_tracing_options()
666 return -1; in set_tracing_options()
670 pr_err("failed to set tracing per-cpu buffer size\n"); in set_tracing_options()
671 return -1; in set_tracing_options()
675 pr_err("failed to set tracing option function-fork\n"); in set_tracing_options()
676 return -1; in set_tracing_options()
680 pr_err("failed to set tracing option sleep-time\n"); in set_tracing_options()
681 return -1; in set_tracing_options()
685 pr_err("failed to set tracing option funcgraph-args\n"); in set_tracing_options()
686 return -1; in set_tracing_options()
690 pr_err("failed to set tracing option funcgraph-retval\n"); in set_tracing_options()
691 return -1; in set_tracing_options()
695 pr_err("failed to set tracing option funcgraph-retaddr\n"); in set_tracing_options()
696 return -1; in set_tracing_options()
700 pr_err("failed to set tracing option funcgraph-irqs\n"); in set_tracing_options()
701 return -1; in set_tracing_options()
705 pr_err("failed to set tracing option funcgraph-proc/funcgraph-abstime\n"); in set_tracing_options()
706 return -1; in set_tracing_options()
711 return -1; in set_tracing_options()
715 pr_err("failed to set tracing option funcgraph-tail\n"); in set_tracing_options()
716 return -1; in set_tracing_options()
724 bool graph = !list_empty(&ftrace->graph_funcs) || in select_tracer()
725 !list_empty(&ftrace->nograph_funcs); in select_tracer()
726 bool func = !list_empty(&ftrace->filters) || in select_tracer()
727 !list_empty(&ftrace->notrace); in select_tracer()
731 ftrace->tracer = "function_graph"; in select_tracer()
733 ftrace->tracer = "function"; in select_tracer()
736 pr_debug("%s tracer is used\n", ftrace->tracer); in select_tracer()
765 if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { in __cmd_ftrace()
766 pr_err("failed to set current_tracer to %s\n", ftrace->tracer); in __cmd_ftrace()
793 if (!ftrace->target.initial_delay) { in __cmd_ftrace()
800 evlist__start_workload(ftrace->evlist); in __cmd_ftrace()
802 if (ftrace->target.initial_delay > 0) { in __cmd_ftrace()
803 usleep(ftrace->target.initial_delay * 1000); in __cmd_ftrace()
811 if (poll(&pollfd, 1, -1) < 0) in __cmd_ftrace()
849 return (done && !workload_exec_errno) ? 0 : -1; in __cmd_ftrace()
855 int min_latency = ftrace->min_latency; in make_histogram()
856 int max_latency = ftrace->max_latency; in make_histogram()
857 unsigned int bucket_num = ftrace->bucket_num; in make_histogram()
903 if (ftrace->use_nsec) in make_histogram()
910 num -= min_latency; in make_histogram()
912 if (!ftrace->bucket_range) { in make_histogram()
918 // than the min latency desired. in make_histogram()
919 if (num > 0) // 1st entry: [ 1 unit .. bucket_range units ] in make_histogram()
920 i = num / ftrace->bucket_range + 1; in make_histogram()
921 if (num >= max_latency - min_latency) in make_histogram()
922 i = bucket_num -1; in make_histogram()
925 i = bucket_num - 1; in make_histogram()
943 int min_latency = ftrace->min_latency; in display_histogram()
944 bool use_nsec = ftrace->use_nsec; in display_histogram()
945 unsigned int bucket_num = ftrace->bucket_num; in display_histogram()
960 printf("# %14s | %10s | %-*s |\n", in display_histogram()
965 if (!ftrace->hide_empty || buckets[0]) in display_histogram()
966 printf(" %4d - %4d %s | %10d | %.*s%*s |\n", in display_histogram()
968 buckets[0], bar_len, bar, bar_total - bar_len, ""); in display_histogram()
970 for (i = 1; i < bucket_num - 1; i++) { in display_histogram()
974 if (ftrace->hide_empty && !buckets[i]) in display_histogram()
976 if (!ftrace->bucket_range) { in display_histogram()
977 start = (1 << (i - 1)); in display_histogram()
986 start = (i - 1) * ftrace->bucket_range + min_latency; in display_histogram()
987 stop = i * ftrace->bucket_range + min_latency; in display_histogram()
989 if (start >= ftrace->max_latency) in display_histogram()
991 if (stop > ftrace->max_latency) in display_histogram()
992 stop = ftrace->max_latency; in display_histogram()
997 printf(" %4.2f - %-4.2f", dstart, dstop); in display_histogram()
1003 printf(" %4d - %4d", start, stop); in display_histogram()
1007 bar_total - bar_len, ""); in display_histogram()
1010 bar_len = buckets[bucket_num - 1] * bar_total / total; in display_histogram()
1011 if (ftrace->hide_empty && !buckets[bucket_num - 1]) in display_histogram()
1013 if (!ftrace->bucket_range) { in display_histogram()
1014 printf(" %4d - %-4s %s", 1, "...", use_nsec ? "ms" : "s "); in display_histogram()
1016 unsigned int upper_outlier = (bucket_num - 2) * ftrace->bucket_range + min_latency; in display_histogram()
1017 if (upper_outlier > ftrace->max_latency) in display_histogram()
1018 upper_outlier = ftrace->max_latency; in display_histogram()
1023 printf(" %4.2f - %-4s %s", dstart, "...", use_nsec ? "us" : "ms"); in display_histogram()
1025 printf(" %4d - %4s %s", upper_outlier, "...", use_nsec ? "ns" : "us"); in display_histogram()
1028 printf(" | %10d | %.*s%*s |\n", buckets[bucket_num - 1], in display_histogram()
1029 bar_len, bar, bar_total - bar_len, ""); in display_histogram()
1032 printf("\n# statistics (in %s)\n", ftrace->use_nsec ? "nsec" : "usec"); in display_histogram()
1045 if (ftrace->target.use_bpf) in prepare_func_latency()
1049 return -1; in prepare_func_latency()
1053 return -1; in prepare_func_latency()
1058 return -1; in prepare_func_latency()
1061 return -1; in prepare_func_latency()
1066 return -1; in prepare_func_latency()
1072 return -1; in prepare_func_latency()
1087 if (ftrace->target.use_bpf) in start_func_latency()
1092 return -1; in start_func_latency()
1100 if (ftrace->target.use_bpf) in stop_func_latency()
1109 if (ftrace->target.use_bpf) in read_func_latency()
1117 if (ftrace->target.use_bpf) in cleanup_func_latency()
1144 evlist__start_workload(ftrace->evlist); in __cmd_latency()
1146 buckets = calloc(ftrace->bucket_num, sizeof(*buckets)); in __cmd_latency()
1154 if (poll(&pollfd, 1, -1) < 0) in __cmd_latency()
1158 int n = read(trace_fd, buf, sizeof(buf) - 1); in __cmd_latency()
1175 while (!ftrace->target.use_bpf) { in __cmd_latency()
1176 int n = read(trace_fd, buf, sizeof(buf) - 1); in __cmd_latency()
1192 return (done && !workload_exec_errno) ? 0 : -1; in __cmd_latency()
1207 ftrace->tracer = "function_graph"; in prepare_func_profile()
1208 ftrace->graph_tail = 1; in prepare_func_profile()
1209 ftrace->graph_verbose = 0; in prepare_func_profile()
1211 ftrace->profile_hash = hashmap__new(profile_hash, profile_equal, NULL); in prepare_func_profile()
1212 if (ftrace->profile_hash == NULL) in prepare_func_profile()
1213 return -ENOMEM; in prepare_func_profile()
1227 if (!hashmap__find(ftrace->profile_hash, func, &prof)) { in add_func_duration()
1231 return -ENOMEM; in add_func_duration()
1236 return -ENOMEM; in add_func_duration()
1239 init_stats(&prof->st); in add_func_duration()
1240 hashmap__add(ftrace->profile_hash, key, prof); in add_func_duration()
1243 update_stats(&prof->st, time_ns); in add_func_duration()
1289 pr_debug("non-usec time found.. ignoring\n"); in parse_func_duration()
1304 return -EINVAL; in parse_func_duration()
1313 /* remove semi-colon or end of comment at the end */ in parse_func_duration()
1314 p = line + len - 1; in parse_func_duration()
1317 --p; in parse_func_duration()
1337 struct ftrace_profile_data *p1 = e1->pvalue; in cmp_profile_data()
1338 struct ftrace_profile_data *p2 = e2->pvalue; in cmp_profile_data()
1343 return strcmp(e1->pkey, e2->pkey); in cmp_profile_data()
1345 v1 = p1->st.mean; in cmp_profile_data()
1346 v2 = p2->st.mean; in cmp_profile_data()
1349 v1 = p1->st.max; in cmp_profile_data()
1350 v2 = p2->st.max; in cmp_profile_data()
1353 v1 = p1->st.n; in cmp_profile_data()
1354 v2 = p2->st.n; in cmp_profile_data()
1358 v1 = p1->st.n * p1->st.mean; in cmp_profile_data()
1359 v2 = p2->st.n * p2->st.mean; in cmp_profile_data()
1364 return -1; in cmp_profile_data()
1372 struct hashmap_entry *entry, **profile; in print_profile_result() local
1375 nr = hashmap__size(ftrace->profile_hash); in print_profile_result()
1386 hashmap__for_each_entry(ftrace->profile_hash, entry, bkt) in print_profile_result()
1387 profile[i++] = entry; in print_profile_result()
1398 const char *name = profile[i]->pkey; in print_profile_result()
1399 struct ftrace_profile_data *p = profile[i]->pvalue; in print_profile_result()
1402 p->st.n * p->st.mean / 1000, p->st.mean / 1000, in print_profile_result()
1403 p->st.max / 1000, p->st.max % 1000, p->st.n, name); in print_profile_result()
1408 hashmap__for_each_entry(ftrace->profile_hash, entry, bkt) { in print_profile_result()
1409 free((char *)entry->pkey); in print_profile_result()
1410 free(entry->pvalue); in print_profile_result()
1413 hashmap__free(ftrace->profile_hash); in print_profile_result()
1414 ftrace->profile_hash = NULL; in print_profile_result()
1446 if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { in __cmd_profile()
1447 pr_err("failed to set current_tracer to %s\n", ftrace->tracer); in __cmd_profile()
1475 evlist__start_workload(ftrace->evlist); in __cmd_profile()
1478 io.timeout_ms = -1; in __cmd_profile()
1517 return (done && !workload_exec_errno) ? 0 : -1; in __cmd_profile()
1528 return -1; in perf_ftrace_config()
1532 ftrace->tracer = value; in perf_ftrace_config()
1537 return -1; in perf_ftrace_config()
1556 return -1; in opt_list_avail_functions()
1560 return err ? -EINVAL : -ENOMEM; in opt_list_avail_functions()
1563 if (ret == -EINVAL) { in opt_list_avail_functions()
1564 pr_err("Filter parse error at %td.\n", err - str + 1); in opt_list_avail_functions()
1566 pr_err(" %*c\n", (int)(err - str + 1), '^'); in opt_list_avail_functions()
1583 struct list_head *head = opt->value; in parse_filter_func()
1584 struct filter_entry *entry; in parse_filter_func() local
1586 entry = malloc(sizeof(*entry) + strlen(str) + 1); in parse_filter_func()
1587 if (entry == NULL) in parse_filter_func()
1588 return -ENOMEM; in parse_filter_func()
1590 strcpy(entry->name, str); in parse_filter_func()
1591 list_add_tail(&entry->list, head); in parse_filter_func()
1601 list_del_init(&pos->list); in delete_filter_func()
1609 struct list_head *head = opt->value; in parse_filter_event()
1610 struct filter_entry *entry; in parse_filter_event() local
1612 int ret = -ENOMEM; in parse_filter_event()
1616 return -ENOMEM; in parse_filter_event()
1619 entry = malloc(sizeof(*entry) + strlen(p) + 1); in parse_filter_event()
1620 if (entry == NULL) in parse_filter_event()
1623 strcpy(entry->name, p); in parse_filter_event()
1624 list_add_tail(&entry->list, head); in parse_filter_event()
1636 unsigned long *s = (unsigned long *)opt->value; in parse_buffer_size()
1652 if (val != (unsigned long) -1) { in parse_buffer_size()
1655 return -1; in parse_buffer_size()
1661 return -1; in parse_buffer_size()
1668 struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; in parse_func_tracer_opts()
1670 { .name = "call-graph", .value_ptr = &ftrace->func_stack_trace }, in parse_func_tracer_opts()
1671 { .name = "irq-info", .value_ptr = &ftrace->func_irq_info }, in parse_func_tracer_opts()
1689 struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; in parse_graph_tracer_opts()
1691 { .name = "args", .value_ptr = &ftrace->graph_args }, in parse_graph_tracer_opts()
1692 { .name = "retval", .value_ptr = &ftrace->graph_retval }, in parse_graph_tracer_opts()
1693 { .name = "retval-hex", .value_ptr = &ftrace->graph_retval_hex }, in parse_graph_tracer_opts()
1694 { .name = "retaddr", .value_ptr = &ftrace->graph_retaddr }, in parse_graph_tracer_opts()
1695 { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, in parse_graph_tracer_opts()
1696 { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, in parse_graph_tracer_opts()
1697 { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, in parse_graph_tracer_opts()
1698 { .name = "thresh", .value_ptr = &ftrace->graph_thresh }, in parse_graph_tracer_opts()
1699 { .name = "depth", .value_ptr = &ftrace->graph_depth }, in parse_graph_tracer_opts()
1700 { .name = "tail", .value_ptr = &ftrace->graph_tail }, in parse_graph_tracer_opts()
1716 enum perf_ftrace_profile_sort_key *key = (void *)opt->value; in parse_sort_key()
1733 return -1; in parse_sort_key()
1755 /* TODO: Add short option -t after -t/--tracer can be removed. */ in cmd_ftrace()
1757 "Trace on existing thread id (exclusive to --pid)"), in cmd_ftrace()
1760 OPT_BOOLEAN('a', "all-cpus", &ftrace.target.system_wide, in cmd_ftrace()
1761 "System-wide collection from all CPUs"), in cmd_ftrace()
1772 OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func", in cmd_ftrace()
1775 OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", in cmd_ftrace()
1777 OPT_CALLBACK(0, "func-opts", &ftrace, "options", in cmd_ftrace()
1778 "Function tracer options, available options: call-graph,irq-info", in cmd_ftrace()
1780 OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", in cmd_ftrace()
1783 OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func", in cmd_ftrace()
1785 OPT_CALLBACK(0, "graph-opts", &ftrace, "options", in cmd_ftrace()
1786 …"Graph tracer options, available options: args,retval,retval-hex,retaddr,nosleep-time,noirqs,verbo… in cmd_ftrace()
1788 OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", in cmd_ftrace()
1797 OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func", in cmd_ftrace()
1798 "Show latency of given function", parse_filter_func), in cmd_ftrace()
1800 "Show latency between the two events", parse_filter_event), in cmd_ftrace()
1802 OPT_BOOLEAN('b', "use-bpf", &ftrace.target.use_bpf, in cmd_ftrace()
1803 "Use BPF to measure function latency"), in cmd_ftrace()
1805 OPT_BOOLEAN('n', "use-nsec", &ftrace.use_nsec, in cmd_ftrace()
1806 "Use nano-second histogram"), in cmd_ftrace()
1807 OPT_UINTEGER(0, "bucket-range", &ftrace.bucket_range, in cmd_ftrace()
1808 "Bucket range in ms or ns (-n/--use-nsec), default is log2() mode"), in cmd_ftrace()
1809 OPT_UINTEGER(0, "min-latency", &ftrace.min_latency, in cmd_ftrace()
1810 "Minimum latency (1st bucket). Works only with --bucket-range."), in cmd_ftrace()
1811 OPT_UINTEGER(0, "max-latency", &ftrace.max_latency, in cmd_ftrace()
1812 "Maximum latency (last bucket). Works only with --bucket-range."), in cmd_ftrace()
1813 OPT_BOOLEAN(0, "hide-empty", &ftrace.hide_empty, in cmd_ftrace()
1818 OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func", in cmd_ftrace()
1821 OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", in cmd_ftrace()
1823 OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", in cmd_ftrace()
1826 OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func", in cmd_ftrace()
1828 OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", in cmd_ftrace()
1833 OPT_CALLBACK(0, "graph-opts", &ftrace, "options", in cmd_ftrace()
1834 "Graph tracer options, available options: nosleep-time,noirqs,thresh=<n>,depth=<n>", in cmd_ftrace()
1842 "perf ftrace [<options>] -- [<command>] [<options>]", in cmd_ftrace()
1843 "perf ftrace {trace|latency|profile} [<options>] [<command>]", in cmd_ftrace()
1844 "perf ftrace {trace|latency|profile} [<options>] -- [<command>] [<options>]", in cmd_ftrace()
1861 return -1; in cmd_ftrace()
1865 return -ENOTSUP; in cmd_ftrace()
1870 return -1; in cmd_ftrace()
1875 } else if (!strcmp(argv[1], "latency")) { in cmd_ftrace()
1884 argc--; in cmd_ftrace()
1895 ret = -EINVAL; in cmd_ftrace()
1899 /* Make system wide (-a) the default target. */ in cmd_ftrace()
1912 ret = -EINVAL; in cmd_ftrace()
1919 ret = -EINVAL; in cmd_ftrace()
1926 ret = -EINVAL; in cmd_ftrace()
1930 pr_err("--min-latency works only with --bucket-range\n"); in cmd_ftrace()
1932 "min-latency", /*short_opt=*/false); in cmd_ftrace()
1933 ret = -EINVAL; in cmd_ftrace()
1937 /* default min latency should be the bucket range */ in cmd_ftrace()
1941 pr_err("--max-latency works only with --bucket-range\n"); in cmd_ftrace()
1943 "max-latency", /*short_opt=*/false); in cmd_ftrace()
1944 ret = -EINVAL; in cmd_ftrace()
1950 pr_err("--max-latency must be larger than min-latency + bucket-range\n"); in cmd_ftrace()
1952 "max-latency", /*short_opt=*/false); in cmd_ftrace()
1953 ret = -EINVAL; in cmd_ftrace()
1960 ftrace.bucket_num = (ftrace.max_latency - ftrace.min_latency) / in cmd_ftrace()
1963 /* default max latency should depend on bucket range and num_buckets */ in cmd_ftrace()
1964 ftrace.max_latency = (NUM_BUCKET - 2) * ftrace.bucket_range + in cmd_ftrace()
1975 ret = -EINVAL; in cmd_ftrace()
1990 ret = -ENOMEM; in cmd_ftrace()