diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-annotate.c | 111 |
1 files changed, 90 insertions, 21 deletions
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 6a08da41f76b..7a5b27867a96 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -25,6 +25,10 @@ #define SHOW_USER 2 #define SHOW_HV 4 +#define MIN_GREEN 0.5 +#define MIN_RED 5.0 + + static char const *input_name = "perf.data"; static char *vmlinux = "vmlinux"; @@ -88,6 +92,7 @@ typedef union event_union { struct sym_ext { + struct rb_node node; double percent; char *path; }; @@ -1038,6 +1043,24 @@ process_event(event_t *event, unsigned long offset, unsigned long head) return 0; } +static char *get_color(double percent) +{ + char *color = PERF_COLOR_NORMAL; + + /* + * We color high-overhead entries in red, mid-overhead + * entries in green - and keep the low overhead places + * normal: + */ + if (percent >= MIN_RED) + color = PERF_COLOR_RED; + else { + if (percent > MIN_GREEN) + color = PERF_COLOR_GREEN; + } + return color; +} + static int parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len) { @@ -1086,7 +1109,7 @@ parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len) const char *path = NULL; unsigned int hits = 0; double percent = 0.0; - char *color = PERF_COLOR_NORMAL; + char *color; struct sym_ext *sym_ext = sym->priv; offset = line_ip - start; @@ -1099,17 +1122,7 @@ parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len) } else if (sym->hist_sum) percent = 100.0 * hits / sym->hist_sum; - /* - * We color high-overhead entries in red, mid-overhead - * entries in green - and keep the low overhead places - * normal: - */ - if (percent >= 5.0) - color = PERF_COLOR_RED; - else { - if (percent > 0.5) - color = PERF_COLOR_GREEN; - } + color = get_color(percent); /* * Also color the filename and line if needed, with @@ -1138,6 +1151,28 @@ parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len) return 0; } +static struct rb_root root_sym_ext; + +static void insert_source_line(struct sym_ext *sym_ext) +{ + struct sym_ext *iter; + struct rb_node **p = &root_sym_ext.rb_node; + struct rb_node *parent = NULL; + + while (*p != NULL) { + parent = *p; + iter = rb_entry(parent, struct sym_ext, node); + + if (sym_ext->percent > iter->percent) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + rb_link_node(&sym_ext->node, parent, p); + rb_insert_color(&sym_ext->node, &root_sym_ext); +} + static void free_source_line(struct symbol *sym, int len) { struct sym_ext *sym_ext = sym->priv; @@ -1151,6 +1186,7 @@ static void free_source_line(struct symbol *sym, int len) free(sym_ext); sym->priv = NULL; + root_sym_ext = RB_ROOT; } /* Get the filename:line for the colored entries */ @@ -1193,12 +1229,42 @@ static void get_source_line(struct symbol *sym, __u64 start, int len) goto next; strcpy(sym_ext[i].path, path); + insert_source_line(&sym_ext[i]); next: pclose(fp); } } +static void print_summary(char *filename) +{ + struct sym_ext *sym_ext; + struct rb_node *node; + + printf("\nSorted summary for file %s\n", filename); + printf("----------------------------------------------\n\n"); + + if (RB_EMPTY_ROOT(&root_sym_ext)) { + printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); + return; + } + + node = rb_first(&root_sym_ext); + while (node) { + double percent; + char *color; + char *path; + + sym_ext = rb_entry(node, struct sym_ext, node); + percent = sym_ext->percent; + color = get_color(percent); + path = sym_ext->path; + + color_fprintf(stdout, color, " %7.2f %s", percent, path); + node = rb_next(node); + } +} + static void annotate_sym(struct dso *dso, struct symbol *sym) { char *filename = dso->name; @@ -1211,13 +1277,6 @@ static void annotate_sym(struct dso *dso, struct symbol *sym) if (dso == kernel_dso) filename = vmlinux; - printf("\n------------------------------------------------\n"); - printf(" Percent | Source code & Disassembly of %s\n", filename); - printf("------------------------------------------------\n"); - - if (verbose >= 2) - printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name); - start = sym->obj_start; if (!start) start = sym->start; @@ -1225,8 +1284,17 @@ static void annotate_sym(struct dso *dso, struct symbol *sym) end = start + sym->end - sym->start + 1; len = sym->end - sym->start; - if (print_line) + if (print_line) { get_source_line(sym, start, len); + print_summary(filename); + } + + printf("\n\n------------------------------------------------\n"); + printf(" Percent | Source code & Disassembly of %s\n", filename); + printf("------------------------------------------------\n"); + + if (verbose >= 2) + printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name); sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (__u64)start, (__u64)end, filename); @@ -1243,7 +1311,8 @@ static void annotate_sym(struct dso *dso, struct symbol *sym) } pclose(file); - free_source_line(sym, len); + if (print_line) + free_source_line(sym, len); } static void find_annotations(void) |