From 1491c22a5f8563951d3a798758f82b471ecbf501 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 5 Mar 2013 14:53:28 +0900 Subject: perf annotate: Support event group view for --print-line Dynamically allocate source_line_percent according to a number of group members and save nr_pcnt to the struct source_line. This way we can handle multiple events in a general manner. However since the size of struct source_line is not fixed anymore, iterating whole source_line should care about its size. $ perf annotate --group --stdio --print-line Sorted summary for file /lib/ld-2.11.1.so ---------------------------------------------- 33.33 0.00 /build/buildd/eglibc-2.11.1/elf/rtld.c:381 33.33 0.00 /build/buildd/eglibc-2.11.1/elf/dynamic-link.h:128 33.33 0.00 /build/buildd/eglibc-2.11.1/elf/do-rel.h:105 0.00 75.00 /build/buildd/eglibc-2.11.1/elf/dynamic-link.h:137 0.00 25.00 /build/buildd/eglibc-2.11.1/elf/dynamic-link.h:187 ... Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Pekka Enberg Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1362462812-30885-9-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 130 +++++++++++++++++++++++++++++++++------------ 1 file changed, 97 insertions(+), 33 deletions(-) (limited to 'tools/perf/util/annotate.c') diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index ebf2596d7e2e..05e34df5d041 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -607,18 +607,26 @@ static double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, s64 end, const char **path) { struct source_line *src_line = notes->src->lines; - struct sym_hist *h = annotation__histogram(notes, evidx); - unsigned int hits = 0; double percent = 0.0; if (src_line) { + size_t sizeof_src_line = sizeof(*src_line) + + sizeof(src_line->p) * (src_line->nr_pcnt - 1); + while (offset < end) { + src_line = (void *)notes->src->lines + + (sizeof_src_line * offset); + if (*path == NULL) - *path = src_line[offset].path; + *path = src_line->path; - percent += src_line[offset++].p[0].percent; + percent += src_line->p[evidx].percent; + offset++; } } else { + struct sym_hist *h = annotation__histogram(notes, evidx); + unsigned int hits = 0; + while (offset < end) hits += h->addr[offset++]; @@ -658,9 +666,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st for (i = 0; i < nr_percent; i++) { percent = disasm__calc_percent(notes, - evsel->idx + i, offset, - next ? next->offset : (s64) len, - &path); + notes->src->lines ? i : evsel->idx + i, + offset, + next ? next->offset : (s64) len, + &path); ppercents[i] = percent; if (percent > max_percent) @@ -921,7 +930,7 @@ static void insert_source_line(struct rb_root *root, struct source_line *src_lin struct source_line *iter; struct rb_node **p = &root->rb_node; struct rb_node *parent = NULL; - int ret; + int i, ret; while (*p != NULL) { parent = *p; @@ -929,7 +938,8 @@ static void insert_source_line(struct rb_root *root, struct source_line *src_lin ret = strcmp(iter->path, src_line->path); if (ret == 0) { - iter->p[0].percent_sum += src_line->p[0].percent; + for (i = 0; i < src_line->nr_pcnt; i++) + iter->p[i].percent_sum += src_line->p[i].percent; return; } @@ -939,12 +949,26 @@ static void insert_source_line(struct rb_root *root, struct source_line *src_lin p = &(*p)->rb_right; } - src_line->p[0].percent_sum = src_line->p[0].percent; + for (i = 0; i < src_line->nr_pcnt; i++) + src_line->p[i].percent_sum = src_line->p[i].percent; rb_link_node(&src_line->node, parent, p); rb_insert_color(&src_line->node, root); } +static int cmp_source_line(struct source_line *a, struct source_line *b) +{ + int i; + + for (i = 0; i < a->nr_pcnt; i++) { + if (a->p[i].percent_sum == b->p[i].percent_sum) + continue; + return a->p[i].percent_sum > b->p[i].percent_sum; + } + + return 0; +} + static void __resort_source_line(struct rb_root *root, struct source_line *src_line) { struct source_line *iter; @@ -955,7 +979,7 @@ static void __resort_source_line(struct rb_root *root, struct source_line *src_l parent = *p; iter = rb_entry(parent, struct source_line, node); - if (src_line->p[0].percent_sum > iter->p[0].percent_sum) + if (cmp_source_line(src_line, iter)) p = &(*p)->rb_left; else p = &(*p)->rb_right; @@ -987,12 +1011,18 @@ static void symbol__free_source_line(struct symbol *sym, int len) { struct annotation *notes = symbol__annotation(sym); struct source_line *src_line = notes->src->lines; + size_t sizeof_src_line; int i; - for (i = 0; i < len; i++) - free(src_line[i].path); + sizeof_src_line = sizeof(*src_line) + + (sizeof(src_line->p) * (src_line->nr_pcnt - 1)); - free(src_line); + for (i = 0; i < len; i++) { + free(src_line->path); + src_line = (void *)src_line + sizeof_src_line; + } + + free(notes->src->lines); notes->src->lines = NULL; } @@ -1003,17 +1033,30 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, const char *filename) { u64 start; - int i; + int i, k; + int evidx = evsel->idx; char cmd[PATH_MAX * 2]; struct source_line *src_line; struct annotation *notes = symbol__annotation(sym); - struct sym_hist *h = annotation__histogram(notes, evsel->idx); + struct sym_hist *h = annotation__histogram(notes, evidx); struct rb_root tmp_root = RB_ROOT; + int nr_pcnt = 1; + u64 h_sum = h->sum; + size_t sizeof_src_line = sizeof(struct source_line); + + if (perf_evsel__is_group_event(evsel)) { + for (i = 1; i < evsel->nr_members; i++) { + h = annotation__histogram(notes, evidx + i); + h_sum += h->sum; + } + nr_pcnt = evsel->nr_members; + sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->p); + } - if (!h->sum) + if (!h_sum) return 0; - src_line = notes->src->lines = calloc(len, sizeof(struct source_line)); + src_line = notes->src->lines = calloc(len, sizeof_src_line); if (!notes->src->lines) return -1; @@ -1024,29 +1067,41 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, size_t line_len; u64 offset; FILE *fp; + double percent_max = 0.0; - src_line[i].p[0].percent = 100.0 * h->addr[i] / h->sum; - if (src_line[i].p[0].percent <= 0.5) - continue; + src_line->nr_pcnt = nr_pcnt; + + for (k = 0; k < nr_pcnt; k++) { + h = annotation__histogram(notes, evidx + k); + src_line->p[k].percent = 100.0 * h->addr[i] / h->sum; + + if (src_line->p[k].percent > percent_max) + percent_max = src_line->p[k].percent; + } + + if (percent_max <= 0.5) + goto next; offset = start + i; sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset); fp = popen(cmd, "r"); if (!fp) - continue; + goto next; if (getline(&path, &line_len, fp) < 0 || !line_len) - goto next; + goto next_close; - src_line[i].path = malloc(sizeof(char) * line_len + 1); - if (!src_line[i].path) - goto next; + src_line->path = malloc(sizeof(char) * line_len + 1); + if (!src_line->path) + goto next_close; - strcpy(src_line[i].path, path); - insert_source_line(&tmp_root, &src_line[i]); + strcpy(src_line->path, path); + insert_source_line(&tmp_root, src_line); - next: + next_close: pclose(fp); + next: + src_line = (void *)src_line + sizeof_src_line; } resort_source_line(root, &tmp_root); @@ -1068,16 +1123,25 @@ static void print_summary(struct rb_root *root, const char *filename) node = rb_first(root); while (node) { - double percent; + double percent, percent_max = 0.0; const char *color; char *path; + int i; src_line = rb_entry(node, struct source_line, node); - percent = src_line->p[0].percent_sum; - color = get_percent_color(percent); + for (i = 0; i < src_line->nr_pcnt; i++) { + percent = src_line->p[i].percent_sum; + color = get_percent_color(percent); + color_fprintf(stdout, color, " %7.2f", percent); + + if (percent > percent_max) + percent_max = percent; + } + path = src_line->path; + color = get_percent_color(percent_max); + color_fprintf(stdout, color, " %s", path); - color_fprintf(stdout, color, " %7.2f %s", percent, path); node = rb_next(node); } } -- cgit v1.2.3-59-g8ed1b