diff options
Diffstat (limited to 'tools/perf/util/hist.c')
| -rw-r--r-- | tools/perf/util/hist.c | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index d9a5a19391dc..270eb8f3dcee 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -206,3 +206,387 @@ void perf_session__output_resort(struct perf_session *self, u64 total_samples) self->hists = tmp; } + +static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin) +{ + int i; + int ret = fprintf(fp, " "); + + for (i = 0; i < left_margin; i++) + ret += fprintf(fp, " "); + + return ret; +} + +static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask, + int left_margin) +{ + int i; + size_t ret = callchain__fprintf_left_margin(fp, left_margin); + + for (i = 0; i < depth; i++) + if (depth_mask & (1 << i)) + ret += fprintf(fp, "| "); + else + ret += fprintf(fp, " "); + + ret += fprintf(fp, "\n"); + + return ret; +} + +static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, + int depth, int depth_mask, int count, + u64 total_samples, int hits, + int left_margin) +{ + int i; + size_t ret = 0; + + ret += callchain__fprintf_left_margin(fp, left_margin); + for (i = 0; i < depth; i++) { + if (depth_mask & (1 << i)) + ret += fprintf(fp, "|"); + else + ret += fprintf(fp, " "); + if (!count && i == depth - 1) { + double percent; + + percent = hits * 100.0 / total_samples; + ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent); + } else + ret += fprintf(fp, "%s", " "); + } + if (chain->sym) + ret += fprintf(fp, "%s\n", chain->sym->name); + else + ret += fprintf(fp, "%p\n", (void *)(long)chain->ip); + + return ret; +} + +static struct symbol *rem_sq_bracket; +static struct callchain_list rem_hits; + +static void init_rem_hits(void) +{ + rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6); + if (!rem_sq_bracket) { + fprintf(stderr, "Not enough memory to display remaining hits\n"); + return; + } + + strcpy(rem_sq_bracket->name, "[...]"); + rem_hits.sym = rem_sq_bracket; +} + +static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self, + u64 total_samples, int depth, + int depth_mask, int left_margin) +{ + struct rb_node *node, *next; + struct callchain_node *child; + struct callchain_list *chain; + int new_depth_mask = depth_mask; + u64 new_total; + u64 remaining; + size_t ret = 0; + int i; + + if (callchain_param.mode == CHAIN_GRAPH_REL) + new_total = self->children_hit; + else + new_total = total_samples; + + remaining = new_total; + + node = rb_first(&self->rb_root); + while (node) { + u64 cumul; + + child = rb_entry(node, struct callchain_node, rb_node); + cumul = cumul_hits(child); + remaining -= cumul; + + /* + * The depth mask manages the output of pipes that show + * the depth. We don't want to keep the pipes of the current + * level for the last child of this depth. + * Except if we have remaining filtered hits. They will + * supersede the last child + */ + next = rb_next(node); + if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining)) + new_depth_mask &= ~(1 << (depth - 1)); + + /* + * But we keep the older depth mask for the line seperator + * to keep the level link until we reach the last child + */ + ret += ipchain__fprintf_graph_line(fp, depth, depth_mask, + left_margin); + i = 0; + list_for_each_entry(chain, &child->val, list) { + if (chain->ip >= PERF_CONTEXT_MAX) + continue; + ret += ipchain__fprintf_graph(fp, chain, depth, + new_depth_mask, i++, + new_total, + cumul, + left_margin); + } + ret += __callchain__fprintf_graph(fp, child, new_total, + depth + 1, + new_depth_mask | (1 << depth), + left_margin); + node = next; + } + + if (callchain_param.mode == CHAIN_GRAPH_REL && + remaining && remaining != new_total) { + + if (!rem_sq_bracket) + return ret; + + new_depth_mask &= ~(1 << (depth - 1)); + + ret += ipchain__fprintf_graph(fp, &rem_hits, depth, + new_depth_mask, 0, new_total, + remaining, left_margin); + } + + return ret; +} + +static size_t callchain__fprintf_graph(FILE *fp, struct callchain_node *self, + u64 total_samples, int left_margin) +{ + struct callchain_list *chain; + bool printed = false; + int i = 0; + int ret = 0; + + list_for_each_entry(chain, &self->val, list) { + if (chain->ip >= PERF_CONTEXT_MAX) + continue; + + if (!i++ && sort__first_dimension == SORT_SYM) + continue; + + if (!printed) { + ret += callchain__fprintf_left_margin(fp, left_margin); + ret += fprintf(fp, "|\n"); + ret += callchain__fprintf_left_margin(fp, left_margin); + ret += fprintf(fp, "---"); + + left_margin += 3; + printed = true; + } else + ret += callchain__fprintf_left_margin(fp, left_margin); + + if (chain->sym) + ret += fprintf(fp, " %s\n", chain->sym->name); + else + ret += fprintf(fp, " %p\n", (void *)(long)chain->ip); + } + + ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin); + + return ret; +} + +static size_t callchain__fprintf_flat(FILE *fp, struct callchain_node *self, + u64 total_samples) +{ + struct callchain_list *chain; + size_t ret = 0; + + if (!self) + return 0; + + ret += callchain__fprintf_flat(fp, self->parent, total_samples); + + + list_for_each_entry(chain, &self->val, list) { + if (chain->ip >= PERF_CONTEXT_MAX) + continue; + if (chain->sym) + ret += fprintf(fp, " %s\n", chain->sym->name); + else + ret += fprintf(fp, " %p\n", + (void *)(long)chain->ip); + } + + return ret; +} + +static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self, + u64 total_samples, int left_margin) +{ + struct rb_node *rb_node; + struct callchain_node *chain; + size_t ret = 0; + + rb_node = rb_first(&self->sorted_chain); + while (rb_node) { + double percent; + + chain = rb_entry(rb_node, struct callchain_node, rb_node); + percent = chain->hit * 100.0 / total_samples; + switch (callchain_param.mode) { + case CHAIN_FLAT: + ret += percent_color_fprintf(fp, " %6.2f%%\n", + percent); + ret += callchain__fprintf_flat(fp, chain, total_samples); + break; + case CHAIN_GRAPH_ABS: /* Falldown */ + case CHAIN_GRAPH_REL: + ret += callchain__fprintf_graph(fp, chain, total_samples, + left_margin); + case CHAIN_NONE: + default: + break; + } + ret += fprintf(fp, "\n"); + rb_node = rb_next(rb_node); + } + + return ret; +} + +static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self, + struct perf_session *session) +{ + struct sort_entry *se; + size_t ret; + + if (symbol_conf.exclude_other && !self->parent) + return 0; + + if (session->events_stats.total) + ret = percent_color_fprintf(fp, + symbol_conf.field_sep ? "%.2f" : " %6.2f%%", + (self->count * 100.0) / session->events_stats.total); + else + ret = fprintf(fp, symbol_conf.field_sep ? "%lld" : "%12lld ", self->count); + + if (symbol_conf.show_nr_samples) { + if (symbol_conf.field_sep) + fprintf(fp, "%c%lld", *symbol_conf.field_sep, self->count); + else + fprintf(fp, "%11lld", self->count); + } + + list_for_each_entry(se, &hist_entry__sort_list, list) { + if (se->elide) + continue; + + fprintf(fp, "%s", symbol_conf.field_sep ?: " "); + ret += se->print(fp, self, se->width ? *se->width : 0); + } + + ret += fprintf(fp, "\n"); + + if (symbol_conf.use_callchain) { + int left_margin = 0; + + if (sort__first_dimension == SORT_COMM) { + se = list_first_entry(&hist_entry__sort_list, typeof(*se), + list); + left_margin = se->width ? *se->width : 0; + left_margin -= thread__comm_len(self->thread); + } + + hist_entry_callchain__fprintf(fp, self, session->events_stats.total, + left_margin); + } + + return ret; +} + +size_t perf_session__fprintf_hists(struct perf_session *self, FILE *fp) +{ + struct hist_entry *pos; + struct sort_entry *se; + struct rb_node *nd; + size_t ret = 0; + unsigned int width; + char *col_width = symbol_conf.col_width_list_str; + + init_rem_hits(); + + fprintf(fp, "# Samples: %ld\n", self->events_stats.total); + fprintf(fp, "#\n"); + + fprintf(fp, "# Overhead"); + if (symbol_conf.show_nr_samples) { + if (symbol_conf.field_sep) + fprintf(fp, "%cSamples", *symbol_conf.field_sep); + else + fputs(" Samples ", fp); + } + list_for_each_entry(se, &hist_entry__sort_list, list) { + if (se->elide) + continue; + if (symbol_conf.field_sep) { + fprintf(fp, "%c%s", *symbol_conf.field_sep, se->header); + continue; + } + width = strlen(se->header); + if (se->width) { + if (symbol_conf.col_width_list_str) { + if (col_width) { + *se->width = atoi(col_width); + col_width = strchr(col_width, ','); + if (col_width) + ++col_width; + } + } + width = *se->width = max(*se->width, width); + } + fprintf(fp, " %*s", width, se->header); + } + fprintf(fp, "\n"); + + if (symbol_conf.field_sep) + goto print_entries; + + fprintf(fp, "# ........"); + if (symbol_conf.show_nr_samples) + fprintf(fp, " .........."); + list_for_each_entry(se, &hist_entry__sort_list, list) { + unsigned int i; + + if (se->elide) + continue; + + fprintf(fp, " "); + if (se->width) + width = *se->width; + else + width = strlen(se->header); + for (i = 0; i < width; i++) + fprintf(fp, "."); + } + fprintf(fp, "\n"); + + fprintf(fp, "#\n"); + +print_entries: + for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) { + pos = rb_entry(nd, struct hist_entry, rb_node); + ret += hist_entry__fprintf(fp, pos, self); + } + + if (sort_order == default_sort_order && + parent_pattern == default_parent_pattern) { + fprintf(fp, "#\n"); + fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n"); + fprintf(fp, "#\n"); + } + fprintf(fp, "\n"); + + free(rem_sq_bracket); + + return ret; +} |