/* * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> * * Parts came from builtin-annotate.c, see those files for further * copyright notes. * * Released under the GPL v2. (and only v2, not any later version) */ #include "util.h"#include "build-id.h"#include "color.h"#include "cache.h"#include "symbol.h"#include "debug.h"#include "annotate.h"#include <pthread.h> const char 	*disassembler_style; int symbol__annotate_init(struct map *map __used, struct symbol *sym){	struct annotation *notes = symbol__annotation(sym);	pthread_mutex_init(&notes->lock, NULL);	return 0;} int symbol__alloc_hist(struct symbol *sym, int nevents){	struct annotation *notes = symbol__annotation(sym);	size_t sizeof_sym_hist = (sizeof(struct sym_hist) +				  (sym->end - sym->start) * sizeof(u64)); 	notes->src = zalloc(sizeof(*notes->src) + nevents * sizeof_sym_hist);	if (notes->src == NULL)		return -1;	notes->src->sizeof_sym_hist = sizeof_sym_hist;	notes->src->nr_histograms   = nevents;	INIT_LIST_HEAD(&notes->src->source);	return 0;} void symbol__annotate_zero_histograms(struct symbol *sym){	struct annotation *notes = symbol__annotation(sym); 	pthread_mutex_lock(&notes->lock);	if (notes->src != NULL)		memset(notes->src->histograms, 0,		       notes->src->nr_histograms * notes->src->sizeof_sym_hist);	pthread_mutex_unlock(&notes->lock);} int symbol__inc_addr_samples(struct symbol *sym, struct map *map,			     int evidx, u64 addr){	unsigned offset;	struct annotation *notes;	struct sym_hist *h; 	notes = symbol__annotation(sym);	if (notes->src == NULL)		return -ENOMEM; 	pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); 	if (addr >= sym->end)		return 0; 	offset = addr - sym->start;	h = annotation__histogram(notes, evidx);	h->sum++;	h->addr[offset]++; 	pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64		  ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,		  addr, addr - sym->start, evidx, h->addr[offset]);	return 0;} static struct objdump_line *objdump_line__new(s64 offset, char *line, size_t privsize){	struct objdump_line *self = malloc(sizeof(*self) + privsize); 	if (self != NULL) {		self->offset = offset;		self->line = line;	} 	return self;} void objdump_line__free(struct objdump_line *self){	free(self->line);	free(self);} static void objdump__add_line(struct list_head *head, struct objdump_line *line){	list_add_tail(&line->node, head);} struct objdump_line *objdump__get_next_ip_line(struct list_head *head,					       struct objdump_line *pos){	list_for_each_entry_continue(pos, head, node)		if (pos->offset >= 0)			return pos; 	return NULL;} static int objdump_line__print(struct objdump_line *oline, struct symbol *sym,			       int evidx, u64 len, int min_pcnt,			       int printed, int max_lines,			       struct objdump_line *queue){	static const char *prev_line;	static const char *prev_color; 	if (oline->offset != -1) {		const char *path = NULL;		unsigned int hits = 0;		double percent = 0.0;		const char *color;		struct annotation *notes = symbol__annotation(sym);		struct source_line *src_line = notes->src->lines;		struct sym_hist *h = annotation__histogram(notes, evidx);		s64 offset = oline->offset;		struct objdump_line *next; 		next = objdump__get_next_ip_line(&notes->src->source, oline); 		while (offset < (s64)len &&		       (next == NULL || offset < next->offset)) {			if (src_line) {				if (path == NULL)					path = src_line[offset].path;				percent += src_line[offset].percent;			} else				hits += h->addr[offset]; 			++offset;		} 		if (src_line == NULL && h->sum)			percent = 100.0 * hits / h->sum; 		if (percent < min_pcnt)			return -1; 		if (max_lines && printed >= max_lines)			return 1; 		if (queue != NULL) {			list_for_each_entry_from(queue, &notes->src->source, node) {				if (queue == oline)					break;				objdump_line__print(queue, sym, evidx, len,						    0, 0, 1, NULL);			}		} 		color = get_percent_color(percent); 		/*		 * Also color the filename and line if needed, with		 * the same color than the percentage. Don't print it		 * twice for close colored addr with the same filename:line		 */		if (path) {			if (!prev_line || strcmp(prev_line, path)				       || color != prev_color) {				color_fprintf(stdout, color, " %s", path);				prev_line = path;				prev_color = color;			}		} 		color_fprintf(stdout, color, " %7.2f", percent);		printf(" :	");		color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", oline->line);	} else if (max_lines && printed >= max_lines)		return 1;	else {		if (queue)			return -1; 		if (!*oline->line)			printf("         :\n");		else			printf("         :	%s\n", oline->line);	} 	return 0;} static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,				      FILE *file, size_t privsize){	struct annotation *notes = symbol__annotation(sym);	struct objdump_line *objdump_line;	char *line = NULL, *tmp, *tmp2, *c;	size_t line_len;	s64 line_ip, offset = -1; 	if (getline(&line, &line_len, file) < 0)		return -1; 	if (!line)		return -1; 	while (line_len != 0 && isspace(line[line_len - 1]))		line[--line_len] = '\0'; 	c = strchr(line, '\n');	if (c)		*c = 0; 	line_ip = -1; 	/*	 * Strip leading spaces:	 */	tmp = line;	while (*tmp) {		if (*tmp != ' ')			break;		tmp++;	} 	if (*tmp) {		/*		 * Parse hexa addresses followed by ':'		 */		line_ip = strtoull(tmp, &tmp2, 16);		if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')			line_ip = -1;	} 	if (line_ip != -1) {		u64 start = map__rip_2objdump(map, sym->start),		    end = map__rip_2objdump(map, sym->end); 		offset = line_ip - start;		if (offset < 0 || (u64)line_ip > end)			offset = -1;	} 	objdump_line = objdump_line__new(offset, line, privsize);	if (objdump_line == NULL) {		free(line);		return -1;	}	objdump__add_line(&notes->src->source, objdump_line); 	return 0;} int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize){	struct dso *dso = map->dso;	char *filename = dso__build_id_filename(dso, NULL, 0);	bool free_filename = true;	char command[PATH_MAX * 2];	FILE *file;	int err = 0;	char symfs_filename[PATH_MAX]; 	if (filename) {		snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",			 symbol_conf.symfs, filename);	} 	if (filename == NULL) {		if (dso->has_build_id) {			pr_err("Can't annotate %s: not enough memory\n",			       sym->name);			return -ENOMEM;		}		goto fallback;	} else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||		   strstr(command, "[kernel.kallsyms]") ||		   access(symfs_filename, R_OK)) {		free(filename);fallback:		/*		 * If we don't have build-ids or the build-id file isn't in the		 * cache, or is just a kallsyms file, well, lets hope that this		 * DSO is the same as when 'perf record' ran.		 */		filename = dso->long_name;		snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",			 symbol_conf.symfs, filename);		free_filename = false;	} 	if (dso->symtab_type == SYMTAB__KALLSYMS) {		char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";		char *build_id_msg = NULL; 		if (dso->annotate_warned)			goto out_free_filename; 		if (dso->has_build_id) {			build_id__sprintf(dso->build_id,					  sizeof(dso->build_id), bf + 15);			build_id_msg = bf;		}		err = -ENOENT;		dso->annotate_warned = 1;		pr_err("Can't annotate %s:\n\n"		       "No vmlinux file%s\nwas found in the path.\n\n"		       "Please use:\n\n"		       "  perf buildid-cache -av vmlinux\n\n"		       "or:\n\n"		       "  --vmlinux vmlinux",		       sym->name, build_id_msg ?: "");		goto out_free_filename;	} 	pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,		 filename, sym->name, map->unmap_ip(map, sym->start),		 map->unmap_ip(map, sym->end)); 	pr_debug("annotating [%p] %30s : [%p] %30s\n",		 dso, dso->long_name, sym, sym->name); 	snprintf(command, sizeof(command),		 "objdump %s%s --start-address=0x%016" PRIx64		 " --stop-address=0x%016" PRIx64		 " -d %s %s -C %s|grep -v %s|expand",		 disassembler_style ? "-M " : "",		 disassembler_style ? disassembler_style : "",		 map__rip_2objdump(map, sym->start),		 map__rip_2objdump(map, sym->end),		 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",		 symbol_conf.annotate_src ? "-S" : "",		 symfs_filename, filename); 	pr_debug("Executing: %s\n", command); 	file = popen(command, "r");	if (!file)		goto out_free_filename; 	while (!feof(file))		if (symbol__parse_objdump_line(sym, map, file, privsize) < 0)			break; 	pclose(file);out_free_filename:	if (free_filename)		free(filename);	return err;} static void insert_source_line(struct rb_root *root, struct source_line *src_line){	struct source_line *iter;	struct rb_node **p = &root->rb_node;	struct rb_node *parent = NULL; 	while (*p != NULL) {		parent = *p;		iter = rb_entry(parent, struct source_line, node); 		if (src_line->percent > iter->percent)			p = &(*p)->rb_left;		else			p = &(*p)->rb_right;	} 	rb_link_node(&src_line->node, parent, p);	rb_insert_color(&src_line->node, root);} 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;	int i; 	for (i = 0; i < len; i++)		free(src_line[i].path); 	free(src_line);	notes->src->lines = NULL;} /* Get the filename:line for the colored entries */static int symbol__get_source_line(struct symbol *sym, struct map *map,				   int evidx, struct rb_root *root, int len,				   const char *filename){	u64 start;	int i;	char cmd[PATH_MAX * 2];	struct source_line *src_line;	struct annotation *notes = symbol__annotation(sym);	struct sym_hist *h = annotation__histogram(notes, evidx); 	if (!h->sum)		return 0; 	src_line = notes->src->lines = calloc(len, sizeof(struct source_line));	if (!notes->src->lines)		return -1; 	start = map->unmap_ip(map, sym->start); 	for (i = 0; i < len; i++) {		char *path = NULL;		size_t line_len;		u64 offset;		FILE *fp; 		src_line[i].percent = 100.0 * h->addr[i] / h->sum;		if (src_line[i].percent <= 0.5)			continue; 		offset = start + i;		sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);		fp = popen(cmd, "r");		if (!fp)			continue; 		if (getline(&path, &line_len, fp) < 0 || !line_len)			goto next; 		src_line[i].path = malloc(sizeof(char) * line_len + 1);		if (!src_line[i].path)			goto next; 		strcpy(src_line[i].path, path);		insert_source_line(root, &src_line[i]); 	next:		pclose(fp);	} 	return 0;} static void print_summary(struct rb_root *root, const char *filename){	struct source_line *src_line;	struct rb_node *node; 	printf("\nSorted summary for file %s\n", filename);	printf("----------------------------------------------\n\n"); 	if (RB_EMPTY_ROOT(root)) {		printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);		return;	} 	node = rb_first(root);	while (node) {		double percent;		const char *color;		char *path; 		src_line = rb_entry(node, struct source_line, node);		percent = src_line->percent;		color = get_percent_color(percent);		path = src_line->path; 		color_fprintf(stdout, color, " %7.2f %s", percent, path);		node = rb_next(node);	}} static void symbol__annotate_hits(struct symbol *sym, int evidx){	struct annotation *notes = symbol__annotation(sym);	struct sym_hist *h = annotation__histogram(notes, evidx);	u64 len = sym->end - sym->start, offset; 	for (offset = 0; offset < len; ++offset)		if (h->addr[offset] != 0)			printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,			       sym->start + offset, h->addr[offset]);	printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);} int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx,			    bool full_paths, int min_pcnt, int max_lines,			    int context){	struct dso *dso = map->dso;	const char *filename = dso->long_name, *d_filename;	struct annotation *notes = symbol__annotation(sym);	struct objdump_line *pos, *queue = NULL;	int printed = 2, queue_len = 0;	int more = 0;	u64 len; 	if (full_paths)

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