diff options
Diffstat (limited to 'tools/perf/util/bpf-trace-summary.c')
| -rw-r--r-- | tools/perf/util/bpf-trace-summary.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/tools/perf/util/bpf-trace-summary.c b/tools/perf/util/bpf-trace-summary.c index 69fb165da206..8dfe7e678941 100644 --- a/tools/perf/util/bpf-trace-summary.c +++ b/tools/perf/util/bpf-trace-summary.c @@ -138,11 +138,14 @@ static bool sc_node_equal(long key1, long key2, void *ctx __maybe_unused) return key1 == key2; } -static int print_common_stats(struct syscall_data *data, FILE *fp) +static int print_common_stats(struct syscall_data *data, int max_summary, FILE *fp) { int printed = 0; - for (int i = 0; i < data->nr_nodes; i++) { + if (max_summary == 0 || max_summary > data->nr_nodes) + max_summary = data->nr_nodes; + + for (int i = 0; i < max_summary; i++) { struct syscall_node *node = &data->nodes[i]; struct syscall_stats *stat = &node->stats; double total = (double)(stat->total_time) / NSEC_PER_MSEC; @@ -200,7 +203,7 @@ static int update_thread_stats(struct hashmap *hash, struct syscall_key *map_key return 0; } -static int print_thread_stat(struct syscall_data *data, FILE *fp) +static int print_thread_stat(struct syscall_data *data, int max_summary, FILE *fp) { int printed = 0; @@ -213,18 +216,18 @@ static int print_thread_stat(struct syscall_data *data, FILE *fp) printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n"); printed += fprintf(fp, " --------------- -------- ------ -------- --------- --------- --------- ------\n"); - printed += print_common_stats(data, fp); + printed += print_common_stats(data, max_summary, fp); printed += fprintf(fp, "\n\n"); return printed; } -static int print_thread_stats(struct syscall_data **data, int nr_data, FILE *fp) +static int print_thread_stats(struct syscall_data **data, int nr_data, int max_summary, FILE *fp) { int printed = 0; for (int i = 0; i < nr_data; i++) - printed += print_thread_stat(data[i], fp); + printed += print_thread_stat(data[i], max_summary, fp); return printed; } @@ -277,7 +280,7 @@ static int update_total_stats(struct hashmap *hash, struct syscall_key *map_key, return 0; } -static int print_total_stats(struct syscall_data **data, int nr_data, FILE *fp) +static int print_total_stats(struct syscall_data **data, int nr_data, int max_summary, FILE *fp) { int printed = 0; int nr_events = 0; @@ -291,8 +294,11 @@ static int print_total_stats(struct syscall_data **data, int nr_data, FILE *fp) printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n"); printed += fprintf(fp, " --------------- -------- ------ -------- --------- --------- --------- ------\n"); - for (int i = 0; i < nr_data; i++) - printed += print_common_stats(data[i], fp); + if (max_summary == 0 || max_summary > nr_data) + max_summary = nr_data; + + for (int i = 0; i < max_summary; i++) + printed += print_common_stats(data[i], max_summary, fp); printed += fprintf(fp, "\n\n"); return printed; @@ -333,7 +339,7 @@ static int update_cgroup_stats(struct hashmap *hash, struct syscall_key *map_key return 0; } -static int print_cgroup_stat(struct syscall_data *data, FILE *fp) +static int print_cgroup_stat(struct syscall_data *data, int max_summary, FILE *fp) { int printed = 0; struct cgroup *cgrp = __cgroup__find(&cgroups, data->key); @@ -351,23 +357,23 @@ static int print_cgroup_stat(struct syscall_data *data, FILE *fp) printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n"); printed += fprintf(fp, " --------------- -------- ------ -------- --------- --------- --------- ------\n"); - printed += print_common_stats(data, fp); + printed += print_common_stats(data, max_summary, fp); printed += fprintf(fp, "\n\n"); return printed; } -static int print_cgroup_stats(struct syscall_data **data, int nr_data, FILE *fp) +static int print_cgroup_stats(struct syscall_data **data, int nr_data, int max_summary, FILE *fp) { int printed = 0; for (int i = 0; i < nr_data; i++) - printed += print_cgroup_stat(data[i], fp); + printed += print_cgroup_stat(data[i], max_summary, fp); return printed; } -int trace_print_bpf_summary(FILE *fp) +int trace_print_bpf_summary(FILE *fp, int max_summary) { struct bpf_map *map = skel->maps.syscall_stats_map; struct syscall_key *prev_key, key; @@ -420,13 +426,13 @@ int trace_print_bpf_summary(FILE *fp) switch (skel->rodata->aggr_mode) { case SYSCALL_AGGR_THREAD: - printed += print_thread_stats(data, nr_data, fp); + printed += print_thread_stats(data, nr_data, max_summary, fp); break; case SYSCALL_AGGR_CPU: - printed += print_total_stats(data, nr_data, fp); + printed += print_total_stats(data, nr_data, max_summary, fp); break; case SYSCALL_AGGR_CGROUP: - printed += print_cgroup_stats(data, nr_data, fp); + printed += print_cgroup_stats(data, nr_data, max_summary, fp); break; default: break; |