Arjan & Linus Annotation Edition

More like Linus', but hey at least an attempt at implementing a suggestion by Arjan made this time around! . Fix indirect calls beautifier, reported by Linus. . Use the objdump comments to nuke specificities about how access to a well know variable is encoded, suggested by Linus. . Show the number of places that jump to a target, requested by Arjan. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iQIcBAABAgAGBQJPrr3pAAoJENZQFvNTUqpAUZUP/jbBfYzJPqFWNvpPrTIeJXAP WVX8bOHCjSQId9dWrc/Nlf/25JUbZOnDE8FV9weBGjJfgc6Y7awfuVtFW/QNjZ7w 2Hggn5242J+CSJ8jwLFFV3gJH3jQUE7m6egkkCQBdPI/ruarO01FKfydHvkTeSNt f418A+S2Bx6oEjZa+DO8g/bhJ9d4FbS5hqubWvqC6iTf5Z9+6fTNnR0dJG1GTdy6 F8x7SXNG3AXKHNbqVzdXExtOYS2bum9yQNI/O4sjUgSoOdg7GzPYom08WglxnOkO K8BXj8stbEW3mZJANoNxUzR7xvfvcaBsEWmz8gF/LkZa51VnbtSsrqKkKZU8LuJ6 MRBW9ue2BUrtLb+U9sfFSs1toRT8WfIetK7OXJIow6m+5TZBepWhZt+Gx0c1LCrt AOGvGSq1u0troomv52JYqNukI+w39quWBPk4C7/kKGY3SRjrriKyCyo1spJxH5en UVFQ8vEHu4gEUspXphKqctT4RAlBO2YdeiJv7t5h2TJgz9wnUwjnvrB1xpIvc6Yo 2gNjSMReNupT5mL8peh0eYS4+4Dcx14Layl3JeYPZ+azIf2mJrfpGucEv/s1b3yr XK2HAQboNF/eZSsuJsmbvq/BIOHaUjFMNqLw8ORwK0WnPNNO0iAuYnu45KcfXhTx I+9JzyG3WYJtZp+R7Zqg =cE1R -----END PGP SIGNATURE----- Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Arjan & Linus Annotation Edition - Fix indirect calls beautifier, reported by Linus. - Use the objdump comments to nuke specificities about how access to a well know variable is encoded, suggested by Linus. - Show the number of places that jump to a target, requested by Arjan. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2024-12-19 01:23:20 +00:00 · 2012-05-14 10:45:01 +02:00 · 2012-05-14 10:45:01 +02:00 · 0c5a0f96e8
commit 0c5a0f96e8
parent 5dcefda0fd 54e7a4e88e
3 changed files with 369 additions and 43 deletions
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@ -16,7 +16,7 @@ struct browser_disasm_line {
 	double		percent;
 	u32		idx;
 	int		idx_asm;
-	bool		jump_target;
+	int		jump_sources;
 };

 struct annotate_browser {
@ -28,11 +28,16 @@ struct annotate_browser {
 	u64		    start;
 	int		    nr_asm_entries;
 	int		    nr_entries;
+	int		    max_jump_sources;
+	int		    nr_jumps;
 	bool		    hide_src_code;
 	bool		    use_offset;
 	bool		    jump_arrows;
+	bool		    show_nr_jumps;
 	bool		    searching_backwards;
 	u8		    addr_width;
+	u8		    jumps_width;
+	u8		    target_width;
 	u8		    min_addr_width;
 	u8		    max_addr_width;
 	char		    search_bf[128];
@ -55,6 +60,25 @@ static bool disasm_line__filter(struct ui_browser *browser, void *entry)
 	return false;
 }

+static int annotate_browser__jumps_percent_color(struct annotate_browser *browser,
+						 int nr, bool current)
+{
+	if (current && (!browser->b.use_navkeypressed || browser->b.navkeypressed))
+		return HE_COLORSET_SELECTED;
+	if (nr == browser->max_jump_sources)
+		return HE_COLORSET_TOP;
+	if (nr > 1)
+		return HE_COLORSET_MEDIUM;
+	return HE_COLORSET_NORMAL;
+}
+
+static int annotate_browser__set_jumps_percent_color(struct annotate_browser *browser,
+						     int nr, bool current)
+{
+	 int color = annotate_browser__jumps_percent_color(browser, nr, current);
+	 return ui_browser__set_color(&browser->b, color);
+}
+
 static void annotate_browser__write(struct ui_browser *self, void *entry, int row)
 {
 	struct annotate_browser *ab = container_of(self, struct annotate_browser, b);
@ -98,9 +122,20 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
 		if (!ab->use_offset) {
 			printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
 		} else {
-			if (bdl->jump_target) {
+			if (bdl->jump_sources) {
+				if (ab->show_nr_jumps) {
+					int prev;
+					printed = scnprintf(bf, sizeof(bf), "%*d ",
+							    ab->jumps_width,
+							    bdl->jump_sources);
+					prev = annotate_browser__set_jumps_percent_color(ab, bdl->jump_sources,
+											 current_entry);
+					slsmg_write_nstring(bf, printed);
+					ui_browser__set_color(self, prev);
+				}
+
 				printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
-						    ab->addr_width, addr);
+						    ab->target_width, addr);
 			} else {
 				printed = scnprintf(bf, sizeof(bf), "%*s  ",
 						    ab->addr_width, " ");
@ -546,10 +581,7 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
 	struct rb_node *nd = NULL;
 	struct map_symbol *ms = self->b.priv;
 	struct symbol *sym = ms->sym;
-	const char *help = "<-/ESC: Exit, TAB/shift+TAB: Cycle hot lines, "
-			   "H: Hottest line, ->/ENTER: Line action, "
-			   "O: Offset view, "
-			   "S: Source view";
+	const char *help = "Press 'h' for help on key bindings";
 	int key;

 	if (ui_browser__show(&self->b, sym->name, help) < 0)
@ -602,26 +634,47 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
 			else
 				nd = self->curr_hot;
 			break;
-		case 'H':
+		case K_F1:
 		case 'h':
+			ui_browser__help_window(&self->b,
+		"UP/DOWN/PGUP\n"
+		"PGDN/SPACE    Navigate\n"
+		"q/ESC/CTRL+C  Exit\n\n"
+		"->            Go to target\n"
+		"<-            Exit\n"
+		"h             Cycle thru hottest instructions\n"
+		"j             Toggle showing jump to target arrows\n"
+		"J             Toggle showing number of jump sources on targets\n"
+		"n             Search next string\n"
+		"o             Toggle disassembler output/simplified view\n"
+		"s             Toggle source code view\n"
+		"/             Search string\n"
+		"?             Search previous string\n");
+			continue;
+		case 'H':
 			nd = self->curr_hot;
 			break;
-		case 'S':
 		case 's':
 			if (annotate_browser__toggle_source(self))
 				ui_helpline__puts(help);
 			continue;
-		case 'O':
 		case 'o':
 			self->use_offset = !self->use_offset;
 			if (self->use_offset)
-				self->addr_width = self->min_addr_width;
+				self->target_width = self->min_addr_width;
 			else
-				self->addr_width = self->max_addr_width;
+				self->target_width = self->max_addr_width;
+update_addr_width:
+			self->addr_width = self->target_width;
+			if (self->show_nr_jumps)
+				self->addr_width += self->jumps_width + 1;
 			continue;
 		case 'j':
 			self->jump_arrows = !self->jump_arrows;
 			continue;
+		case 'J':
+			self->show_nr_jumps = !self->show_nr_jumps;
+			goto update_addr_width;
 		case '/':
 			if (annotate_browser__search(self, delay_secs)) {
 show_help:
@ -707,11 +760,23 @@ static void annotate_browser__mark_jump_targets(struct annotate_browser *browser
 			continue;

 		bdlt = disasm_line__browser(dlt);
-		bdlt->jump_target = true;
+		if (++bdlt->jump_sources > browser->max_jump_sources)
+			browser->max_jump_sources = bdlt->jump_sources;
+
+		++browser->nr_jumps;
 	}
 		
 }

+static inline int width_jumps(int n)
+{
+	if (n >= 100)
+		return 5;
+	if (n / 10)
+		return 2;
+	return 1;
+}
+
 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
 			 void(*timer)(void *arg), void *arg,
 			 int delay_secs)
@ -784,8 +849,9 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,

 	annotate_browser__mark_jump_targets(&browser, size);

-	browser.addr_width = browser.min_addr_width = hex_width(size);
+	browser.addr_width = browser.target_width = browser.min_addr_width = hex_width(size);
 	browser.max_addr_width = hex_width(sym->end);
+	browser.jumps_width = width_jumps(browser.max_jump_sources);
 	browser.b.nr_entries = browser.nr_entries;
 	browser.b.entries = &notes->src->source,
 	browser.b.width += 18; /* Percentage */
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@ -18,6 +18,17 @@

 const char 	*disassembler_style;

+static struct ins *ins__find(const char *name);
+static int disasm_line__parse(char *line, char **namep, char **rawp);
+
+static void ins__delete(struct ins_operands *ops)
+{
+	free(ops->source.raw);
+	free(ops->source.name);
+	free(ops->target.raw);
+	free(ops->target.name);
+}
+
 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
 			      struct ins_operands *ops)
 {
@ -56,6 +67,12 @@ static int call__parse(struct ins_operands *ops)
 	return ops->target.name == NULL ? -1 : 0;

 indirect_call:
+	tok = strchr(endptr, '(');
+	if (tok != NULL) {
+		ops->target.addr = 0;
+		return 0;
+	}
+
 	tok = strchr(endptr, '*');
 	if (tok == NULL)
 		return -1;
@ -70,6 +87,9 @@ static int call__scnprintf(struct ins *ins, char *bf, size_t size,
 	if (ops->target.name)
 		return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);

+	if (ops->target.addr == 0)
+		return ins__raw_scnprintf(ins, bf, size, ops);
+
 	return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
 }

@ -113,6 +133,185 @@ bool ins__is_jump(const struct ins *ins)
 	return ins->ops == &jump_ops;
 }

+static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
+{
+	char *endptr, *name, *t;
+
+	if (strstr(raw, "(%rip)") == NULL)
+		return 0;
+
+	*addrp = strtoull(comment, &endptr, 16);
+	name = strchr(endptr, '<');
+	if (name == NULL)
+		return -1;
+
+	name++;
+
+	t = strchr(name, '>');
+	if (t == NULL)
+		return 0;
+
+	*t = '\0';
+	*namep = strdup(name);
+	*t = '>';
+
+	return 0;
+}
+
+static int lock__parse(struct ins_operands *ops)
+{
+	char *name;
+
+	ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
+	if (ops->locked.ops == NULL)
+		return 0;
+
+	if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
+		goto out_free_ops;
+
+        ops->locked.ins = ins__find(name);
+        if (ops->locked.ins == NULL)
+                goto out_free_ops;
+
+        if (!ops->locked.ins->ops)
+                return 0;
+
+        if (ops->locked.ins->ops->parse)
+                ops->locked.ins->ops->parse(ops->locked.ops);
+
+	return 0;
+
+out_free_ops:
+	free(ops->locked.ops);
+	ops->locked.ops = NULL;
+	return 0;
+}
+
+static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
+			   struct ins_operands *ops)
+{
+	int printed;
+
+	if (ops->locked.ins == NULL)
+		return ins__raw_scnprintf(ins, bf, size, ops);
+
+	printed = scnprintf(bf, size, "%-6.6s ", ins->name);
+	return printed + ins__scnprintf(ops->locked.ins, bf + printed,
+					size - printed, ops->locked.ops);
+}
+
+static void lock__delete(struct ins_operands *ops)
+{
+	free(ops->locked.ops);
+	free(ops->target.raw);
+	free(ops->target.name);
+}
+
+static struct ins_ops lock_ops = {
+	.free	   = lock__delete,
+	.parse	   = lock__parse,
+	.scnprintf = lock__scnprintf,
+};
+
+static int mov__parse(struct ins_operands *ops)
+{
+	char *s = strchr(ops->raw, ','), *target, *comment, prev;
+
+	if (s == NULL)
+		return -1;
+
+	*s = '\0';
+	ops->source.raw = strdup(ops->raw);
+	*s = ',';
+	
+	if (ops->source.raw == NULL)
+		return -1;
+
+	target = ++s;
+
+	while (s[0] != '\0' && !isspace(s[0]))
+		++s;
+	prev = *s;
+	*s = '\0';
+
+	ops->target.raw = strdup(target);
+	*s = prev;
+
+	if (ops->target.raw == NULL)
+		goto out_free_source;
+
+	comment = strchr(s, '#');
+	if (comment == NULL)
+		return 0;
+
+	while (comment[0] != '\0' && isspace(comment[0]))
+		++comment;
+
+	comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
+	comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
+
+	return 0;
+
+out_free_source:
+	free(ops->source.raw);
+	ops->source.raw = NULL;
+	return -1;
+}
+
+static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
+			   struct ins_operands *ops)
+{
+	return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
+			 ops->source.name ?: ops->source.raw,
+			 ops->target.name ?: ops->target.raw);
+}
+
+static struct ins_ops mov_ops = {
+	.parse	   = mov__parse,
+	.scnprintf = mov__scnprintf,
+};
+
+static int dec__parse(struct ins_operands *ops)
+{
+	char *target, *comment, *s, prev;
+
+	target = s = ops->raw;
+
+	while (s[0] != '\0' && !isspace(s[0]))
+		++s;
+	prev = *s;
+	*s = '\0';
+
+	ops->target.raw = strdup(target);
+	*s = prev;
+
+	if (ops->target.raw == NULL)
+		return -1;
+
+	comment = strchr(s, '#');
+	if (comment == NULL)
+		return 0;
+
+	while (comment[0] != '\0' && isspace(comment[0]))
+		++comment;
+
+	comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
+
+	return 0;
+}
+
+static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
+			   struct ins_operands *ops)
+{
+	return scnprintf(bf, size, "%-6.6s %s", ins->name,
+			 ops->target.name ?: ops->target.raw);
+}
+
+static struct ins_ops dec_ops = {
+	.parse	   = dec__parse,
+	.scnprintf = dec__scnprintf,
+};
+
 static int nop__scnprintf(struct ins *ins __used, char *bf, size_t size,
 			  struct ins_operands *ops __used)
 {
@ -127,8 +326,25 @@ static struct ins_ops nop_ops = {
 * Must be sorted by name!
 */
 static struct ins instructions[] = {
+	{ .name = "add",   .ops  = &mov_ops, },
+	{ .name = "addl",  .ops  = &mov_ops, },
+	{ .name = "addq",  .ops  = &mov_ops, },
+	{ .name = "addw",  .ops  = &mov_ops, },
+	{ .name = "and",   .ops  = &mov_ops, },
+	{ .name = "bts",   .ops  = &mov_ops, },
 	{ .name = "call",  .ops  = &call_ops, },
 	{ .name = "callq", .ops  = &call_ops, },
+	{ .name = "cmp",   .ops  = &mov_ops, },
+	{ .name = "cmpb",  .ops  = &mov_ops, },
+	{ .name = "cmpl",  .ops  = &mov_ops, },
+	{ .name = "cmpq",  .ops  = &mov_ops, },
+	{ .name = "cmpw",  .ops  = &mov_ops, },
+	{ .name = "cmpxch", .ops  = &mov_ops, },
+	{ .name = "dec",   .ops  = &dec_ops, },
+	{ .name = "decl",  .ops  = &dec_ops, },
+	{ .name = "imul",  .ops  = &mov_ops, },
+	{ .name = "inc",   .ops  = &dec_ops, },
+	{ .name = "incl",  .ops  = &dec_ops, },
 	{ .name = "ja",	   .ops  = &jump_ops, },
 	{ .name = "jae",   .ops  = &jump_ops, },
 	{ .name = "jb",	   .ops  = &jump_ops, },
@ -164,9 +380,25 @@ static struct ins instructions[] = {
 	{ .name = "jrcxz", .ops  = &jump_ops, },
 	{ .name = "js",	   .ops  = &jump_ops, },
 	{ .name = "jz",	   .ops  = &jump_ops, },
+	{ .name = "lea",   .ops  = &mov_ops, },
+	{ .name = "lock",  .ops  = &lock_ops, },
+	{ .name = "mov",   .ops  = &mov_ops, },
+	{ .name = "movb",  .ops  = &mov_ops, },
+	{ .name = "movdqa",.ops  = &mov_ops, },
+	{ .name = "movl",  .ops  = &mov_ops, },
+	{ .name = "movq",  .ops  = &mov_ops, },
+	{ .name = "movslq", .ops  = &mov_ops, },
+	{ .name = "movzbl", .ops  = &mov_ops, },
+	{ .name = "movzwl", .ops  = &mov_ops, },
 	{ .name = "nop",   .ops  = &nop_ops, },
 	{ .name = "nopl",  .ops  = &nop_ops, },
 	{ .name = "nopw",  .ops  = &nop_ops, },
+	{ .name = "or",    .ops  = &mov_ops, },
+	{ .name = "orl",   .ops  = &mov_ops, },
+	{ .name = "test",  .ops  = &mov_ops, },
+	{ .name = "testb", .ops  = &mov_ops, },
+	{ .name = "testl", .ops  = &mov_ops, },
+	{ .name = "xadd",  .ops  = &mov_ops, },
 };

 static int ins__cmp(const void *name, const void *insp)
@ -257,6 +489,44 @@ static void disasm_line__init_ins(struct disasm_line *dl)
 		dl->ins->ops->parse(&dl->ops);
 }

+static int disasm_line__parse(char *line, char **namep, char **rawp)
+{
+	char *name = line, tmp;
+
+	while (isspace(name[0]))
+		++name;
+
+	if (name[0] == '\0')
+		return -1;
+
+	*rawp = name + 1;
+
+	while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
+		++*rawp;
+
+	tmp = (*rawp)[0];
+	(*rawp)[0] = '\0';
+	*namep = strdup(name);
+
+	if (*namep == NULL)
+		goto out_free_name;
+
+	(*rawp)[0] = tmp;
+
+	if ((*rawp)[0] != '\0') {
+		(*rawp)++;
+		while (isspace((*rawp)[0]))
+			++(*rawp);
+	}
+
+	return 0;
+
+out_free_name:
+	free(*namep);
+	*namep = NULL;
+	return -1;
+}
+
 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
 {
 	struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
@ -268,35 +538,9 @@ static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privs
 			goto out_delete;

 		if (offset != -1) {
-			char *name = dl->line, tmp;
-
-			while (isspace(name[0]))
-				++name;
-
-			if (name[0] == '\0')
-				goto out_delete;
-
-			dl->ops.raw = name + 1;
-
-			while (dl->ops.raw[0] != '\0' &&
-			       !isspace(dl->ops.raw[0]))
-				++dl->ops.raw;
-
-			tmp = dl->ops.raw[0];
-			dl->ops.raw[0] = '\0';
-			dl->name = strdup(name);
-
-			if (dl->name == NULL)
+			if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
 				goto out_free_line;

-			dl->ops.raw[0] = tmp;
-
-			if (dl->ops.raw[0] != '\0') {
-				dl->ops.raw++;
-				while (isspace(dl->ops.raw[0]))
-					++dl->ops.raw;
-			}
-
 			disasm_line__init_ins(dl);
 		}
 	}
@ -314,7 +558,10 @@ void disasm_line__free(struct disasm_line *dl)
 {
 	free(dl->line);
 	free(dl->name);
-	free(dl->ops.target.name);
+	if (dl->ins && dl->ins->ops->free)
+		dl->ins->ops->free(&dl->ops);
+	else
+		ins__delete(&dl->ops);
 	free(dl);
 }

--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@ -13,13 +13,26 @@ struct ins;
 struct ins_operands {
 	char	*raw;
 	struct {
+		char	*raw;
 		char	*name;
-		u64	offset;
 		u64	addr;
+		u64	offset;
 	} target;
+	union {
+		struct {
+			char	*raw;
+			char	*name;
+			u64	addr;
+		} source;
+		struct {
+			struct ins *ins;
+			struct ins_operands *ops;
+		} locked;
+	};
 };

 struct ins_ops {
+	void (*free)(struct ins_operands *ops);
 	int (*parse)(struct ins_operands *ops);
 	int (*scnprintf)(struct ins *ins, char *bf, size_t size,
 			 struct ins_operands *ops);