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perf annotate: Move annotate functions to util/ 

They will be used by perf top, so that we have just one set of routines
to do annotation.

Rename "struct sym_priv" to "struct annotation", etc, to clarify this
code a bit.

Rename "struct sym_ext" to "struct source_line", to give it a meaningful
name, that clarifies that it is a the result of an addr2line call, that
is sorted by percentage one particular source code line appeared in the
annotation.

And since we're moving things around also rename 'sym_hist->ip' to
'sym_hist->addr' as we want to do data structure annotation at some
point.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-02-04 09:45:46 -02:00
parent 764328d320
commit 78f7defedb
8 changed files with 578 additions and 503 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/Makefile
View File

@ -401,6 +401,7 @@ LIB_H += util/include/dwarf-regs.h
LIB_H += util/include/asm/dwarf2.h
LIB_H += util/include/asm/cpufeature.h
LIB_H += perf.h
LIB_H += util/annotate.h
LIB_H += util/cache.h
LIB_H += util/callchain.h
LIB_H += util/build-id.h
@ -444,6 +445,7 @@ LIB_H += $(ARCH_INCLUDE)
LIB_OBJS += $(OUTPUT)util/abspath.o
LIB_OBJS += $(OUTPUT)util/alias.o
LIB_OBJS += $(OUTPUT)util/annotate.o
LIB_OBJS += $(OUTPUT)util/build-id.o
LIB_OBJS += $(OUTPUT)util/config.o
LIB_OBJS += $(OUTPUT)util/ctype.o

255
tools/perf/builtin-annotate.c
View File

@ -9,6 +9,7 @@
#include "util/util.h"
#include "util/util.h"
#include "util/color.h"
#include <linux/list.h>
#include "util/cache.h"
@ -18,6 +19,7 @@
#include "perf.h"
#include "util/debug.h"
#include "util/annotate.h"
#include "util/event.h"
#include "util/parse-options.h"
#include "util/parse-events.h"
@ -79,245 +81,10 @@ static int process_sample_event(union perf_event *event,
return 0;
}
static int objdump_line__print(struct objdump_line *self,
struct list_head *head,
struct hist_entry *he, u64 len)
{
struct symbol *sym = he->ms.sym;
static const char *prev_line;
static const char *prev_color;
if (self->offset != -1) {
const char *path = NULL;
unsigned int hits = 0;
double percent = 0.0;
const char *color;
struct sym_priv *priv = symbol__priv(sym);
struct sym_ext *sym_ext = priv->ext;
struct sym_hist *h = priv->hist;
s64 offset = self->offset;
struct objdump_line *next = objdump__get_next_ip_line(head, self);
while (offset < (s64)len &&
(next == NULL || offset < next->offset)) {
if (sym_ext) {
if (path == NULL)
path = sym_ext[offset].path;
percent += sym_ext[offset].percent;
} else
hits += h->ip[offset];
++offset;
}
if (sym_ext == NULL && h->sum)
percent = 100.0 * hits / h->sum;
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 ip 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", self->line);
} else {
if (!*self->line)
printf(" :\n");
else
printf(" : %s\n", self->line);
}
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 hist_entry *he, int len)
{
struct sym_priv *priv = symbol__priv(he->ms.sym);
struct sym_ext *sym_ext = priv->ext;
int i;
if (!sym_ext)
return;
for (i = 0; i < len; i++)
free(sym_ext[i].path);
free(sym_ext);
priv->ext = NULL;
root_sym_ext = RB_ROOT;
}
/* Get the filename:line for the colored entries */
static void
get_source_line(struct hist_entry *he, int len, const char *filename)
{
struct symbol *sym = he->ms.sym;
u64 start;
int i;
char cmd[PATH_MAX * 2];
struct sym_ext *sym_ext;
struct sym_priv *priv = symbol__priv(sym);
struct sym_hist *h = priv->hist;
if (!h->sum)
return;
sym_ext = priv->ext = calloc(len, sizeof(struct sym_ext));
if (!priv->ext)
return;
start = he->ms.map->unmap_ip(he->ms.map, sym->start);
for (i = 0; i < len; i++) {
char *path = NULL;
size_t line_len;
u64 offset;
FILE *fp;
sym_ext[i].percent = 100.0 * h->ip[i] / h->sum;
if (sym_ext[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;
sym_ext[i].path = malloc(sizeof(char) * line_len + 1);
if (!sym_ext[i].path)
goto next;
strcpy(sym_ext[i].path, path);
insert_source_line(&sym_ext[i]);
next:
pclose(fp);
}
}
static void print_summary(const 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;
const char *color;
char *path;
sym_ext = rb_entry(node, struct sym_ext, node);
percent = sym_ext->percent;
color = get_percent_color(percent);
path = sym_ext->path;
color_fprintf(stdout, color, " %7.2f %s", percent, path);
node = rb_next(node);
}
}
static void hist_entry__print_hits(struct hist_entry *self)
{
struct symbol *sym = self->ms.sym;
struct sym_priv *priv = symbol__priv(sym);
struct sym_hist *h = priv->hist;
u64 len = sym->end - sym->start, offset;
for (offset = 0; offset < len; ++offset)
if (h->ip[offset] != 0)
printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
sym->start + offset, h->ip[offset]);
printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
}
static int hist_entry__tty_annotate(struct hist_entry *he)
{
struct map *map = he->ms.map;
struct dso *dso = map->dso;
struct symbol *sym = he->ms.sym;
const char *filename = dso->long_name, *d_filename;
u64 len;
LIST_HEAD(head);
struct objdump_line *pos, *n;
if (hist_entry__annotate(he, &head, 0) < 0)
return -1;
if (full_paths)
d_filename = filename;
else
d_filename = basename(filename);
len = sym->end - sym->start;
if (print_line) {
get_source_line(he, len, filename);
print_summary(filename);
}
printf("\n\n------------------------------------------------\n");
printf(" Percent | Source code & Disassembly of %s\n", d_filename);
printf("------------------------------------------------\n");
if (verbose)
hist_entry__print_hits(he);
list_for_each_entry_safe(pos, n, &head, node) {
objdump_line__print(pos, &head, he, len);
list_del(&pos->node);
objdump_line__free(pos);
}
if (print_line)
free_source_line(he, len);
return 0;
return symbol__tty_annotate(he->ms.sym, he->ms.map,
print_line, full_paths);
}
static void hists__find_annotations(struct hists *self)
@ -327,13 +94,13 @@ static void hists__find_annotations(struct hists *self)
while (nd) {
struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
struct sym_priv *priv;
struct annotation *notes;
if (he->ms.sym == NULL || he->ms.map->dso->annotate_warned)
goto find_next;
priv = symbol__priv(he->ms.sym);
if (priv->hist == NULL) {
notes = symbol__annotation(he->ms.sym);
if (notes->histogram == NULL) {
find_next:
if (key == KEY_LEFT)
nd = rb_prev(nd);
@ -362,11 +129,11 @@ find_next:
nd = rb_next(nd);
/*
* Since we have a hist_entry per IP for the same
* symbol, free he->ms.sym->hist to signal we already
* symbol, free he->ms.sym->histogram to signal we already
* processed this symbol.
*/
free(priv->hist);
priv->hist = NULL;
free(notes->histogram);
notes->histogram = NULL;
}
}
}
@ -454,7 +221,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __used)
setup_browser(true);
symbol_conf.priv_size = sizeof(struct sym_priv);
symbol_conf.priv_size = sizeof(struct annotation);
symbol_conf.try_vmlinux_path = true;
if (symbol__init() < 0)

3
tools/perf/builtin-report.c
View File

@ -9,6 +9,7 @@
#include "util/util.h"
#include "util/annotate.h"
#include "util/color.h"
#include <linux/list.h>
#include "util/cache.h"
@ -508,7 +509,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __used)
* implementation.
*/
if (use_browser > 0) {
symbol_conf.priv_size = sizeof(struct sym_priv);
symbol_conf.priv_size = sizeof(struct annotation);
/*
* For searching by name on the "Browse map details".
* providing it only in verbose mode not to bloat too

467
tools/perf/util/annotate.c Normal file
View File

@ -0,0 +1,467 @@
/*
* 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"
static int symbol__alloc_hist(struct symbol *sym)
{
struct annotation *notes = symbol__annotation(sym);
const int size = (sizeof(*notes->histogram) +
(sym->end - sym->start) * sizeof(u64));
notes->histogram = zalloc(size);
return notes->histogram == NULL ? -1 : 0;
}
int symbol__inc_addr_samples(struct symbol *sym, struct map *map, u64 addr)
{
unsigned int sym_size, offset;
struct annotation *notes;
struct sym_hist *h;
if (!sym || !map)
return 0;
notes = symbol__annotation(sym);
if (notes->histogram == NULL && symbol__alloc_hist(sym) < 0)
return -ENOMEM;
sym_size = sym->end - sym->start;
offset = addr - sym->start;
pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
if (offset >= sym_size)
return 0;
h = notes->histogram;
h->sum++;
h->addr[offset]++;
pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
"] => %" PRIu64 "\n", sym->start, sym->name,
addr, addr - sym->start, 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 void objdump_line__print(struct objdump_line *oline,
struct list_head *head,
struct symbol *sym, u64 len)
{
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_line;
struct sym_hist *h = notes->histogram;
s64 offset = oline->offset;
struct objdump_line *next = objdump__get_next_ip_line(head, 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;
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 (!*oline->line)
printf(" :\n");
else
printf(" : %s\n", oline->line);
}
}
static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, FILE *file,
struct list_head *head, size_t privsize)
{
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(head, objdump_line);
return 0;
}
int symbol__annotate(struct symbol *sym, struct map *map,
struct list_head *head, 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;
u64 len;
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->origin == DSO__ORIG_KERNEL) {
if (dso->annotate_warned)
goto out_free_filename;
err = -ENOENT;
dso->annotate_warned = 1;
pr_err("Can't annotate %s: No vmlinux file was found in the "
"path\n", sym->name);
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));
len = sym->end - sym->start;
pr_debug("annotating [%p] %30s : [%p] %30s\n",
dso, dso->long_name, sym, sym->name);
snprintf(command, sizeof(command),
"objdump --start-address=0x%016" PRIx64
" --stop-address=0x%016" PRIx64 " -dS -C %s|grep -v %s|expand",
map__rip_2objdump(map, sym->start),
map__rip_2objdump(map, sym->end),
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, head, 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_line;
int i;
for (i = 0; i < len; i++)
free(src_line[i].path);
free(src_line);
notes->src_line = NULL;
}
/* Get the filename:line for the colored entries */
static int symbol__get_source_line(struct symbol *sym, struct map *map,
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 = notes->histogram;
if (!h->sum)
return 0;
src_line = notes->src_line = calloc(len, sizeof(struct source_line));
if (!notes->src_line)
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)
{
struct annotation *notes = symbol__annotation(sym);
struct sym_hist *h = notes->histogram;
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__tty_annotate(struct symbol *sym, struct map *map, bool print_lines,
bool full_paths)
{
struct dso *dso = map->dso;
const char *filename = dso->long_name, *d_filename;
struct rb_root source_line = RB_ROOT;
struct objdump_line *pos, *n;
LIST_HEAD(head);
u64 len;
if (symbol__annotate(sym, map, &head, 0) < 0)
return -1;
if (full_paths)
d_filename = filename;
else
d_filename = basename(filename);
len = sym->end - sym->start;
if (print_lines) {
symbol__get_source_line(sym, map, &source_line, len, filename);
print_summary(&source_line, filename);
}
printf("\n\n------------------------------------------------\n");
printf(" Percent | Source code & Disassembly of %s\n", d_filename);
printf("------------------------------------------------\n");
if (verbose)
symbol__annotate_hits(sym);
list_for_each_entry_safe(pos, n, &head, node) {
objdump_line__print(pos, &head, sym, len);
list_del(&pos->node);
objdump_line__free(pos);
}
if (print_lines)
symbol__free_source_line(sym, len);
return 0;
}

65
tools/perf/util/annotate.h Normal file
View File

@ -0,0 +1,65 @@
#ifndef __PERF_ANNOTATE_H
#define __PERF_ANNOTATE_H
#include <stdbool.h>
#include "types.h"
#include "symbol.h"
#include <linux/list.h>
#include <linux/rbtree.h>
struct objdump_line {
struct list_head node;
s64 offset;
char *line;
};
void objdump_line__free(struct objdump_line *self);
struct objdump_line *objdump__get_next_ip_line(struct list_head *head,
struct objdump_line *pos);
struct sym_hist {
u64 sum;
u64 addr[0];
};
struct source_line {
struct rb_node node;
double percent;
char *path;
};
struct annotation {
struct sym_hist *histogram;
struct source_line *src_line;
};
struct sannotation {
struct annotation annotation;
struct symbol symbol;
};
static inline struct annotation *symbol__annotation(struct symbol *sym)
{
struct sannotation *a = container_of(sym, struct sannotation, symbol);
return &a->annotation;
}
int symbol__inc_addr_samples(struct symbol *sym, struct map *map, u64 addr);
int symbol__annotate(struct symbol *sym, struct map *map,
struct list_head *head, size_t privsize);
int symbol__tty_annotate(struct symbol *sym, struct map *map,
bool print_lines, bool full_paths);
#ifdef NO_NEWT_SUPPORT
static inline int symbol__tui_annotate(symbol *sym __used,
struct map *map __used)
{
return 0;
}
#else
int symbol__tui_annotate(struct symbol *sym, struct map *map);
#endif
#endif /* __PERF_ANNOTATE_H */

219
tools/perf/util/hist.c
View File

@ -1,3 +1,4 @@
#include "annotate.h"
#include "util.h"
#include "build-id.h"
#include "hist.h"
@ -949,225 +950,15 @@ void hists__filter_by_thread(struct hists *self, const struct thread *thread)
}
}
static int symbol__alloc_hist(struct symbol *self)
int hist_entry__inc_addr_samples(struct hist_entry *he, u64 ip)
{
struct sym_priv *priv = symbol__priv(self);
const int size = (sizeof(*priv->hist) +
(self->end - self->start) * sizeof(u64));
priv->hist = zalloc(size);
return priv->hist == NULL ? -1 : 0;
return symbol__inc_addr_samples(he->ms.sym, he->ms.map, ip);
}
int hist_entry__inc_addr_samples(struct hist_entry *self, u64 ip)
{
unsigned int sym_size, offset;
struct symbol *sym = self->ms.sym;
struct sym_priv *priv;
struct sym_hist *h;
if (!sym || !self->ms.map)
return 0;
priv = symbol__priv(sym);
if (priv->hist == NULL && symbol__alloc_hist(sym) < 0)
return -ENOMEM;
sym_size = sym->end - sym->start;
offset = ip - sym->start;
pr_debug3("%s: ip=%#" PRIx64 "\n", __func__, self->ms.map->unmap_ip(self->ms.map, ip));
if (offset >= sym_size)
return 0;
h = priv->hist;
h->sum++;
h->ip[offset]++;
pr_debug3("%#" PRIx64 " %s: period++ [ip: %#" PRIx64 ", %#" PRIx64
"] => %" PRIu64 "\n", self->ms.sym->start, self->ms.sym->name,
ip, ip - self->ms.sym->start, h->ip[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 hist_entry__parse_objdump_line(struct hist_entry *self, FILE *file,
struct list_head *head, size_t privsize)
{
struct symbol *sym = self->ms.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(self->ms.map, sym->start),
end = map__rip_2objdump(self->ms.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(head, objdump_line);
return 0;
}
int hist_entry__annotate(struct hist_entry *self, struct list_head *head,
int hist_entry__annotate(struct hist_entry *he, struct list_head *head,
size_t privsize)
{
struct symbol *sym = self->ms.sym;
struct map *map = self->ms.map;
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;
u64 len;
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->origin == DSO__ORIG_KERNEL) {
if (dso->annotate_warned)
goto out_free_filename;
err = -ENOENT;
dso->annotate_warned = 1;
pr_err("Can't annotate %s: No vmlinux file was found in the "
"path\n", sym->name);
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));
len = sym->end - sym->start;
pr_debug("annotating [%p] %30s : [%p] %30s\n",
dso, dso->long_name, sym, sym->name);
snprintf(command, sizeof(command),
"objdump --start-address=0x%016" PRIx64 " --stop-address=0x%016" PRIx64 " -dS -C %s|grep -v %s|expand",
map__rip_2objdump(map, sym->start),
map__rip_2objdump(map, sym->end),
symfs_filename, filename);
pr_debug("Executing: %s\n", command);
file = popen(command, "r");
if (!file)
goto out_free_filename;
while (!feof(file))
if (hist_entry__parse_objdump_line(self, file, head, privsize) < 0)
break;
pclose(file);
out_free_filename:
if (free_filename)
free(filename);
return err;
return symbol__annotate(he->ms.sym, he->ms.map, head, privsize);
}
void hists__inc_nr_events(struct hists *self, u32 type)

27
tools/perf/util/hist.h
View File

@ -9,33 +9,6 @@ extern struct callchain_param callchain_param;
struct hist_entry;
struct addr_location;
struct symbol;
struct rb_root;
struct objdump_line {
struct list_head node;
s64 offset;
char *line;
};
void objdump_line__free(struct objdump_line *self);
struct objdump_line *objdump__get_next_ip_line(struct list_head *head,
struct objdump_line *pos);
struct sym_hist {
u64 sum;
u64 ip[0];
};
struct sym_ext {
struct rb_node node;
double percent;
char *path;
};
struct sym_priv {
struct sym_hist *hist;
struct sym_ext *ext;
};
/*
* The kernel collects the number of events it couldn't send in a stretch and

43
tools/perf/util/ui/browsers/annotate.c
View File

@ -1,9 +1,11 @@
#include "../browser.h"
#include "../helpline.h"
#include "../libslang.h"
#include "../../annotate.h"
#include "../../hist.h"
#include "../../sort.h"
#include "../../symbol.h"
#include "../../annotate.h"
static void ui__error_window(const char *fmt, ...)
{
@ -66,24 +68,26 @@ static double objdump_line__calc_percent(struct objdump_line *self,
if (self->offset != -1) {
int len = sym->end - sym->start;
unsigned int hits = 0;
struct sym_priv *priv = symbol__priv(sym);
struct sym_ext *sym_ext = priv->ext;
struct sym_hist *h = priv->hist;
struct annotation *notes = symbol__annotation(sym);
struct source_line *src_line = notes->src_line;
struct sym_hist *h = notes->histogram;
s64 offset = self->offset;
struct objdump_line *next = objdump__get_next_ip_line(head, self);
while (offset < (s64)len &&
(next == NULL || offset < next->offset)) {
if (sym_ext) {
percent += sym_ext[offset].percent;
if (src_line) {
percent += src_line[offset].percent;
} else
hits += h->ip[offset];
hits += h->addr[offset];
++offset;
}
if (sym_ext == NULL && h->sum)
/*
* If the percentage wasn't already calculated in
* symbol__get_source_line, do it now:
*/
if (src_line == NULL && h->sum)
percent = 100.0 * hits / h->sum;
}
@ -136,10 +140,10 @@ static void annotate_browser__set_top(struct annotate_browser *self,
static int annotate_browser__run(struct annotate_browser *self)
{
struct rb_node *nd;
struct hist_entry *he = self->b.priv;
struct symbol *sym = self->b.priv;
int key;
if (ui_browser__show(&self->b, he->ms.sym->name,
if (ui_browser__show(&self->b, sym->name,
"<-, -> or ESC: exit, TAB/shift+TAB: cycle thru samples") < 0)
return -1;
/*
@ -179,7 +183,12 @@ out:
return key;
}
int hist_entry__tui_annotate(struct hist_entry *self)
int hist_entry__tui_annotate(struct hist_entry *he)
{
return symbol__tui_annotate(he->ms.sym, he->ms.map);
}
int symbol__tui_annotate(struct symbol *sym, struct map *map)
{
struct objdump_line *pos, *n;
struct objdump_line_rb_node *rbpos;
@ -190,18 +199,18 @@ int hist_entry__tui_annotate(struct hist_entry *self)
.refresh = ui_browser__list_head_refresh,
.seek = ui_browser__list_head_seek,
.write = annotate_browser__write,
.priv = self,
.priv = sym,
},
};
int ret;
if (self->ms.sym == NULL)
if (sym == NULL)
return -1;
if (self->ms.map->dso->annotate_warned)
if (map->dso->annotate_warned)
return -1;
if (hist_entry__annotate(self, &head, sizeof(*rbpos)) < 0) {
if (symbol__annotate(sym, map, &head, sizeof(*rbpos)) < 0) {
ui__error_window(ui_helpline__last_msg);
return -1;
}
@ -214,7 +223,7 @@ int hist_entry__tui_annotate(struct hist_entry *self)
browser.b.width = line_len;
rbpos = objdump_line__rb(pos);
rbpos->idx = browser.b.nr_entries++;
rbpos->percent = objdump_line__calc_percent(pos, &head, self->ms.sym);
rbpos->percent = objdump_line__calc_percent(pos, &head, sym);
if (rbpos->percent < 0.01)
continue;
objdump__insert_line(&browser.entries, rbpos);