diff options
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 3 | ||||
| -rw-r--r-- | tools/perf/Makefile | 2 | ||||
| -rw-r--r-- | tools/perf/builtin-report.c | 25 | ||||
| -rw-r--r-- | tools/perf/util/values.c | 171 | ||||
| -rw-r--r-- | tools/perf/util/values.h | 26 |
5 files changed, 227 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index e72e931..370344a 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -27,6 +27,9 @@ OPTIONS -n --show-nr-samples Show the number of samples for each symbol +-T +--threads + Show per-thread event counters -C:: --comms=:: Only consider symbols in these comms. CSV that understands diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 60411e9..de7beac 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -310,6 +310,7 @@ LIB_H += util/sigchain.h LIB_H += util/symbol.h LIB_H += util/module.h LIB_H += util/color.h +LIB_H += util/values.h LIB_OBJS += util/abspath.o LIB_OBJS += util/alias.o @@ -337,6 +338,7 @@ LIB_OBJS += util/color.o LIB_OBJS += util/pager.o LIB_OBJS += util/header.o LIB_OBJS += util/callchain.o +LIB_OBJS += util/values.o BUILTIN_OBJS += builtin-annotate.o BUILTIN_OBJS += builtin-help.o diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 99274ce..4163918 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -17,6 +17,7 @@ #include "util/string.h" #include "util/callchain.h" #include "util/strlist.h" +#include "util/values.h" #include "perf.h" #include "util/header.h" @@ -53,6 +54,9 @@ static int modules; static int full_paths; static int show_nr_samples; +static int show_threads; +static struct perf_read_values show_threads_values; + static unsigned long page_size; static unsigned long mmap_window = 32; @@ -1473,6 +1477,9 @@ print_entries: free(rem_sq_bracket); + if (show_threads) + perf_read_values_display(fp, &show_threads_values); + return ret; } @@ -1758,6 +1765,16 @@ process_read_event(event_t *event, unsigned long offset, unsigned long head) { struct perf_counter_attr *attr = perf_header__find_attr(event->read.id); + if (show_threads) { + char *name = attr ? __event_name(attr->type, attr->config) + : "unknown"; + perf_read_values_add_value(&show_threads_values, + event->read.pid, event->read.tid, + event->read.id, + name, + event->read.value); + } + dprintf("%p [%p]: PERF_EVENT_READ: %d %d %s %Lu\n", (void *)(offset + head), (void *)(long)(event->header.size), @@ -1839,6 +1856,9 @@ static int __cmd_report(void) register_idle_thread(); + if (show_threads) + perf_read_values_init(&show_threads_values); + input = open(input_name, O_RDONLY); if (input < 0) { fprintf(stderr, " failed to open file: %s", input_name); @@ -1993,6 +2013,9 @@ done: output__resort(total); output__fprintf(stdout, total); + if (show_threads) + perf_read_values_destroy(&show_threads_values); + return rc; } @@ -2066,6 +2089,8 @@ static const struct option options[] = { "load module symbols - WARNING: use only with -k and LIVE kernel"), OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples, "Show a column with the number of samples"), + OPT_BOOLEAN('T', "threads", &show_threads, + "Show per-thread event counters"), OPT_STRING('s', "sort", &sort_order, "key[,key2...]", "sort by key(s): pid, comm, dso, symbol, parent"), OPT_BOOLEAN('P', "full-paths", &full_paths, diff --git a/tools/perf/util/values.c b/tools/perf/util/values.c new file mode 100644 index 0000000..8551c0b --- /dev/null +++ b/tools/perf/util/values.c @@ -0,0 +1,171 @@ +#include <stdlib.h> + +#include "util.h" +#include "values.h" + +void perf_read_values_init(struct perf_read_values *values) +{ + values->threads_max = 16; + values->pid = malloc(values->threads_max * sizeof(*values->pid)); + values->tid = malloc(values->threads_max * sizeof(*values->tid)); + values->value = malloc(values->threads_max * sizeof(*values->value)); + if (!values->pid || !values->tid || !values->value) + die("failed to allocate read_values threads arrays"); + values->threads = 0; + + values->counters_max = 16; + values->counterrawid = malloc(values->counters_max + * sizeof(*values->counterrawid)); + values->countername = malloc(values->counters_max + * sizeof(*values->countername)); + if (!values->counterrawid || !values->countername) + die("failed to allocate read_values counters arrays"); + values->counters = 0; +} + +void perf_read_values_destroy(struct perf_read_values *values) +{ + int i; + + if (!values->threads_max || !values->counters_max) + return; + + for (i = 0; i < values->threads; i++) + free(values->value[i]); + free(values->pid); + free(values->tid); + free(values->counterrawid); + for (i = 0; i < values->counters; i++) + free(values->countername[i]); + free(values->countername); +} + +static void perf_read_values__enlarge_threads(struct perf_read_values *values) +{ + values->threads_max *= 2; + values->pid = realloc(values->pid, + values->threads_max * sizeof(*values->pid)); + values->tid = realloc(values->tid, + values->threads_max * sizeof(*values->tid)); + values->value = realloc(values->value, + values->threads_max * sizeof(*values->value)); + if (!values->pid || !values->tid || !values->value) + die("failed to enlarge read_values threads arrays"); +} + +static int perf_read_values__findnew_thread(struct perf_read_values *values, + u32 pid, u32 tid) +{ + int i; + + for (i = 0; i < values->threads; i++) + if (values->pid[i] == pid && values->tid[i] == tid) + return i; + + if (values->threads == values->threads_max) + perf_read_values__enlarge_threads(values); + + i = values->threads++; + values->pid[i] = pid; + values->tid[i] = tid; + values->value[i] = malloc(values->counters_max * sizeof(**values->value)); + if (!values->value[i]) + die("failed to allocate read_values counters array"); + + return i; +} + +static void perf_read_values__enlarge_counters(struct perf_read_values *values) +{ + int i; + + values->counters_max *= 2; + values->counterrawid = realloc(values->counterrawid, + values->counters_max * sizeof(*values->counterrawid)); + values->countername = realloc(values->countername, + values->counters_max * sizeof(*values->countername)); + if (!values->counterrawid || !values->countername) + die("failed to enlarge read_values counters arrays"); + + for (i = 0; i < values->threads; i++) { + values->value[i] = realloc(values->value[i], + values->counters_max * sizeof(**values->value)); + if (!values->value[i]) + die("failed to enlarge read_values counters arrays"); + } +} + +static int perf_read_values__findnew_counter(struct perf_read_values *values, + u64 rawid, char *name) +{ + int i; + + for (i = 0; i < values->counters; i++) + if (values->counterrawid[i] == rawid) + return i; + + if (values->counters == values->counters_max) + perf_read_values__enlarge_counters(values); + + i = values->counters++; + values->counterrawid[i] = rawid; + values->countername[i] = strdup(name); + + return i; +} + +void perf_read_values_add_value(struct perf_read_values *values, + u32 pid, u32 tid, + u64 rawid, char *name, u64 value) +{ + int tindex, cindex; + + tindex = perf_read_values__findnew_thread(values, pid, tid); + cindex = perf_read_values__findnew_counter(values, rawid, name); + + values->value[tindex][cindex] = value; +} + +void perf_read_values_display(FILE *fp, struct perf_read_values *values) +{ + int i, j; + int pidwidth, tidwidth; + int *counterwidth; + + counterwidth = malloc(values->counters * sizeof(*counterwidth)); + if (!counterwidth) + die("failed to allocate counterwidth array"); + tidwidth = 3; + pidwidth = 3; + for (j = 0; j < values->counters; j++) + counterwidth[j] = strlen(values->countername[j]); + for (i = 0; i < values->threads; i++) { + int width; + + width = snprintf(NULL, 0, "%d", values->pid[i]); + if (width > pidwidth) + pidwidth = width; + width = snprintf(NULL, 0, "%d", values->tid[i]); + if (width > tidwidth) + tidwidth = width; + for (j = 0; j < values->counters; j++) { + width = snprintf(NULL, 0, "%Lu", values->value[i][j]); + if (width > counterwidth[j]) + counterwidth[j] = width; + } + } + + fprintf(fp, "# %*s %*s", pidwidth, "PID", tidwidth, "TID"); + for (j = 0; j < values->counters; j++) + fprintf(fp, " %*s", counterwidth[j], values->countername[j]); + fprintf(fp, "\n"); + + for (i = 0; i < values->threads; i++) { + fprintf(fp, " %*d %*d", pidwidth, values->pid[i], + tidwidth, values->tid[i]); + for (j = 0; j < values->counters; j++) + fprintf(fp, " %*Lu", + counterwidth[j], values->value[i][j]); + fprintf(fp, "\n"); + } +} diff --git a/tools/perf/util/values.h b/tools/perf/util/values.h new file mode 100644 index 0000000..e41be5e --- /dev/null +++ b/tools/perf/util/values.h @@ -0,0 +1,26 @@ +#ifndef _PERF_VALUES_H +#define _PERF_VALUES_H + +#include "types.h" + +struct perf_read_values { + int threads; + int threads_max; + u32 *pid, *tid; + int counters; + int counters_max; + u64 *counterrawid; + char **countername; + u64 **value; +}; + +void perf_read_values_init(struct perf_read_values *values); +void perf_read_values_destroy(struct perf_read_values *values); + +void perf_read_values_add_value(struct perf_read_values *values, + u32 pid, u32 tid, + u64 rawid, char *name, u64 value); + +void perf_read_values_display(FILE *fp, struct perf_read_values *values); + +#endif /* _PERF_VALUES_H */ |