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perf tools: Factorize the map helpers 

Factorize the dso mapping helpers into a single purpose common file
"util/map.c"

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Brice Goglin <Brice.Goglin@inria.fr>
This commit is contained in:
Frederic Weisbecker 2009-08-12 11:07:25 +02:00
parent 1fe2c1066c
commit 66e274f3b8
9 changed files with 137 additions and 198 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/perf/Makefile
View File

@ -340,6 +340,7 @@ LIB_OBJS += util/header.o
LIB_OBJS += util/callchain.o
LIB_OBJS += util/values.o
LIB_OBJS += util/debug.o
LIB_OBJS += util/map.o
BUILTIN_OBJS += builtin-annotate.o
BUILTIN_OBJS += builtin-help.o

79
tools/perf/builtin-annotate.c
View File

@ -51,83 +51,6 @@ struct sym_ext {
char *path;
};
struct map {
struct list_head node;
u64 start;
u64 end;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
static u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
static u64 vdso__map_ip(struct map *map __used, u64 ip)
{
return ip;
}
static struct map *map__new(struct mmap_event *event)
{
struct map *self = malloc(sizeof(*self));
if (self != NULL) {
const char *filename = event->filename;
self->start = event->start;
self->end = event->start + event->len;
self->pgoff = event->pgoff;
self->dso = dsos__findnew(filename);
if (self->dso == NULL)
goto out_delete;
if (self->dso == vdso)
self->map_ip = vdso__map_ip;
else
self->map_ip = map__map_ip;
}
return self;
out_delete:
free(self);
return NULL;
}
static struct map *map__clone(struct map *self)
{
struct map *map = malloc(sizeof(*self));
if (!map)
return NULL;
memcpy(map, self, sizeof(*self));
return map;
}
static int map__overlap(struct map *l, struct map *r)
{
if (l->start > r->start) {
struct map *t = l;
l = r;
r = t;
}
if (l->end > r->start)
return 1;
return 0;
}
static size_t map__fprintf(struct map *self, FILE *fp)
{
return fprintf(fp, " %Lx-%Lx %Lx %s\n",
self->start, self->end, self->pgoff, self->dso->name);
}
struct thread {
struct rb_node rb_node;
@ -797,7 +720,7 @@ static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread = threads__findnew(event->mmap.pid);
struct map *map = map__new(&event->mmap);
struct map *map = map__new(&event->mmap, NULL, 0);
dprintf("%p [%p]: PERF_EVENT_MMAP %d: [%p(%p) @ %p]: %s\n",
(void *)(offset + head),

1
tools/perf/builtin-record.c
View File

@ -15,6 +15,7 @@
#include "util/string.h"
#include "util/header.h"
#include "util/event.h"
#include <unistd.h>
#include <sched.h>

124
tools/perf/builtin-report.c
View File

@ -67,6 +67,10 @@ static char callchain_default_opt[] = "fractal,0.5";
static int callchain;
static char __cwd[PATH_MAX];
static char *cwd = __cwd;
static int cwdlen;
static
struct callchain_param callchain_param = {
.mode = CHAIN_GRAPH_REL,
@ -102,124 +106,6 @@ static int repsep_fprintf(FILE *fp, const char *fmt, ...)
return n;
}
static char __cwd[PATH_MAX];
static char *cwd = __cwd;
static int cwdlen;
static int strcommon(const char *pathname)
{
int n = 0;
while (n < cwdlen && pathname[n] == cwd[n])
++n;
return n;
}
struct map {
struct list_head node;
u64 start;
u64 end;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
static u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
static u64 vdso__map_ip(struct map *map __used, u64 ip)
{
return ip;
}
static inline int is_anon_memory(const char *filename)
{
return strcmp(filename, "//anon") == 0;
}
static struct map *map__new(struct mmap_event *event)
{
struct map *self = malloc(sizeof(*self));
if (self != NULL) {
const char *filename = event->filename;
char newfilename[PATH_MAX];
int anon;
if (cwd) {
int n = strcommon(filename);
if (n == cwdlen) {
snprintf(newfilename, sizeof(newfilename),
".%s", filename + n);
filename = newfilename;
}
}
anon = is_anon_memory(filename);
if (anon) {
snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid);
filename = newfilename;
}
self->start = event->start;
self->end = event->start + event->len;
self->pgoff = event->pgoff;
self->dso = dsos__findnew(filename);
if (self->dso == NULL)
goto out_delete;
if (self->dso == vdso || anon)
self->map_ip = vdso__map_ip;
else
self->map_ip = map__map_ip;
}
return self;
out_delete:
free(self);
return NULL;
}
static struct map *map__clone(struct map *self)
{
struct map *map = malloc(sizeof(*self));
if (!map)
return NULL;
memcpy(map, self, sizeof(*self));
return map;
}
static int map__overlap(struct map *l, struct map *r)
{
if (l->start > r->start) {
struct map *t = l;
l = r;
r = t;
}
if (l->end > r->start)
return 1;
return 0;
}
static size_t map__fprintf(struct map *self, FILE *fp)
{
return fprintf(fp, " %Lx-%Lx %Lx %s\n",
self->start, self->end, self->pgoff, self->dso->name);
}
struct thread {
struct rb_node rb_node;
struct list_head maps;
@ -1474,7 +1360,7 @@ static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread = threads__findnew(event->mmap.pid);
struct map *map = map__new(&event->mmap);
struct map *map = map__new(&event->mmap, cwd, cwdlen);
dprintf("%p [%p]: PERF_EVENT_MMAP %d: [%p(%p) @ %p]: %s\n",
(void *)(offset + head),

1
tools/perf/util/callchain.h
View File

@ -4,6 +4,7 @@
#include "../perf.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include "util.h"
#include "symbol.h"
enum chain_mode {

30
tools/perf/util/event.h
View File

@ -1,4 +1,8 @@
#ifndef __PERF_EVENT_H
#define __PERF_EVENT_H
#include "../perf.h"
#include "util.h"
#include <linux/list.h>
struct ip_event {
struct perf_event_header header;
@ -52,3 +56,29 @@ typedef union event_union {
struct lost_event lost;
struct read_event read;
} event_t;
struct map {
struct list_head node;
u64 start;
u64 end;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
static inline u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
static inline u64 vdso__map_ip(struct map *map __used, u64 ip)
{
return ip;
}
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
#endif

97
tools/perf/util/map.c Normal file
View File

@ -0,0 +1,97 @@
#include "event.h"
#include "symbol.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
static inline int is_anon_memory(const char *filename)
{
return strcmp(filename, "//anon") == 0;
}
static int strcommon(const char *pathname, char *cwd, int cwdlen)
{
int n = 0;
while (n < cwdlen && pathname[n] == cwd[n])
++n;
return n;
}
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
{
struct map *self = malloc(sizeof(*self));
if (self != NULL) {
const char *filename = event->filename;
char newfilename[PATH_MAX];
int anon;
if (cwd) {
int n = strcommon(filename, cwd, cwdlen);
if (n == cwdlen) {
snprintf(newfilename, sizeof(newfilename),
".%s", filename + n);
filename = newfilename;
}
}
anon = is_anon_memory(filename);
if (anon) {
snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid);
filename = newfilename;
}
self->start = event->start;
self->end = event->start + event->len;
self->pgoff = event->pgoff;
self->dso = dsos__findnew(filename);
if (self->dso == NULL)
goto out_delete;
if (self->dso == vdso || anon)
self->map_ip = vdso__map_ip;
else
self->map_ip = map__map_ip;
}
return self;
out_delete:
free(self);
return NULL;
}
struct map *map__clone(struct map *self)
{
struct map *map = malloc(sizeof(*self));
if (!map)
return NULL;
memcpy(map, self, sizeof(*self));
return map;
}
int map__overlap(struct map *l, struct map *r)
{
if (l->start > r->start) {
struct map *t = l;
l = r;
r = t;
}
if (l->end > r->start)
return 1;
return 0;
}
size_t map__fprintf(struct map *self, FILE *fp)
{
return fprintf(fp, " %Lx-%Lx %Lx %s\n",
self->start, self->end, self->pgoff, self->dso->name);
}

1
tools/perf/util/symbol.h
View File

@ -6,6 +6,7 @@
#include <linux/list.h>
#include <linux/rbtree.h>
#include "module.h"
#include "event.h"
struct symbol {
struct rb_node rb_node;

1
tools/perf/util/util.h
View File

@ -83,7 +83,6 @@
#include <inttypes.h>
#include "../../../include/linux/magic.h"
#include "event.h"
#ifndef NO_ICONV
#include <iconv.h>