diff options
| -rw-r--r-- | tools/perf/Documentation/perf-kwork.txt | 26 | ||||
| -rw-r--r-- | tools/perf/builtin-kwork.c | 57 |
2 files changed, 80 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-kwork.txt b/tools/perf/Documentation/perf-kwork.txt index 0601fcb0feea..34d6c285e527 100644 --- a/tools/perf/Documentation/perf-kwork.txt +++ b/tools/perf/Documentation/perf-kwork.txt @@ -178,6 +178,32 @@ OPTIONS for 'perf kwork timehist' stop time is not given (i.e, time string is 'x.y,') then analysis goes to end of file. +OPTIONS for 'perf kwork top' +--------------------------------- + +-C:: +--cpu:: + Only show events for the given CPU(s) (comma separated list). + +-i:: +--input:: + Input file name. (default: perf.data unless stdin is a fifo) + +-n:: +--name:: + Only show events for the given name. + +-s:: +--sort:: + Sort by key(s): rate, runtime, tid + +--time:: + Only analyze samples within given time window: <start>,<stop>. Times + have the format seconds.microseconds. If start is not given (i.e., time + string is ',x.y') then analysis starts at the beginning of the file. If + stop time is not given (i.e, time string is 'x.y,') then analysis goes + to end of file. + SEE ALSO -------- linkperf:perf-record[1] diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c index c741cc1a543f..d5949ff4bd15 100644 --- a/tools/perf/builtin-kwork.c +++ b/tools/perf/builtin-kwork.c @@ -146,6 +146,24 @@ static int cpu_usage_cmp(struct kwork_work *l, struct kwork_work *r) return 0; } +static int id_or_cpu_r_cmp(struct kwork_work *l, struct kwork_work *r) +{ + if (l->id < r->id) + return 1; + if (l->id > r->id) + return -1; + + if (l->id != 0) + return 0; + + if (l->cpu < r->cpu) + return 1; + if (l->cpu > r->cpu) + return -1; + + return 0; +} + static int sort_dimension__add(struct perf_kwork *kwork __maybe_unused, const char *tok, struct list_head *list) { @@ -174,6 +192,10 @@ static int sort_dimension__add(struct perf_kwork *kwork __maybe_unused, .name = "rate", .cmp = cpu_usage_cmp, }; + static struct sort_dimension tid_sort_dimension = { + .name = "tid", + .cmp = id_or_cpu_r_cmp, + }; struct sort_dimension *available_sorts[] = { &id_sort_dimension, &max_sort_dimension, @@ -181,6 +203,7 @@ static int sort_dimension__add(struct perf_kwork *kwork __maybe_unused, &runtime_sort_dimension, &avg_sort_dimension, &rate_sort_dimension, + &tid_sort_dimension, }; if (kwork->report == KWORK_REPORT_LATENCY) @@ -381,6 +404,17 @@ static void profile_update_timespan(struct perf_kwork *kwork, kwork->timeend = sample->time; } +static bool profile_name_match(struct perf_kwork *kwork, + struct kwork_work *work) +{ + if (kwork->profile_name && work->name && + (strcmp(work->name, kwork->profile_name) != 0)) { + return false; + } + + return true; +} + static bool profile_event_match(struct perf_kwork *kwork, struct kwork_work *work, struct perf_sample *sample) @@ -396,10 +430,14 @@ static bool profile_event_match(struct perf_kwork *kwork, ((ptime->end != 0) && (ptime->end < time))) return false; - if ((kwork->profile_name != NULL) && - (work->name != NULL) && - (strcmp(work->name, kwork->profile_name) != 0)) + /* + * report top needs to collect the runtime of all tasks to + * calculate the load of each core. + */ + if ((kwork->report != KWORK_REPORT_TOP) && + !profile_name_match(kwork, work)) { return false; + } profile_update_timespan(kwork, sample); return true; @@ -2070,6 +2108,9 @@ static void top_merge_tasks(struct perf_kwork *kwork) rb_erase_cached(node, &class->work_root); data = rb_entry(node, struct kwork_work, node); + if (!profile_name_match(kwork, data)) + continue; + cpu = data->cpu; merged_work = find_work_by_id(&merged_root, data->id, data->id == 0 ? cpu : -1); @@ -2329,6 +2370,16 @@ int cmd_kwork(int argc, const char **argv) OPT_PARENT(kwork_options) }; const struct option top_options[] = { + OPT_STRING('s', "sort", &kwork.sort_order, "key[,key2...]", + "sort by key(s): rate, runtime, tid"), + OPT_STRING('C', "cpu", &kwork.cpu_list, "cpu", + "list of cpus to profile"), + OPT_STRING('n', "name", &kwork.profile_name, "name", + "event name to profile"), + OPT_STRING(0, "time", &kwork.time_str, "str", + "Time span for analysis (start,stop)"), + OPT_STRING('i', "input", &input_name, "file", + "input file name"), OPT_PARENT(kwork_options) }; const char *kwork_usage[] = { |