perf annotate: Print a sorted summary of annotated overhead lines (971738f3) · Commits · 戴 / test

tools/perf/builtin-annotate.c

+90 −21

Original line number	Diff line number	Diff line
		@@ -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);

		@@ -1243,6 +1311,7 @@ static void annotate_sym(struct dso dso, struct symbol sym)
		}

		pclose(file);
		if (print_line)
		free_source_line(sym, len);
		}

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