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perf symbols: Add a long_name_len member to struct dso

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Using a two bytes hole we already had and since we also need to
calculate this strlen for fetching the buildids. We'll use it in
'perf top' to auto-adjust the output based on the terminal
width.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258479655-28662-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2009-11-17 15:40:53 -02:00 committed by Ingo Molnar
parent 11ada26c78
commit cfc10d3bcc
2 changed files with 22 additions and 5 deletions
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26
tools/perf/util/symbol.c
View file

@ -109,13 +109,24 @@ static size_t symbol__fprintf(struct symbol *self, FILE *fp)
self->start, self->end, self->name);
}
static void dso__set_long_name(struct dso *self, char *name)
{
self->long_name = name;
self->long_name_len = strlen(name);
}
static void dso__set_basename(struct dso *self)
{
self->short_name = basename(self->long_name);
}
struct dso *dso__new(const char *name)
{
struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
if (self != NULL) {
strcpy(self->name, name);
self->long_name = self->name;
dso__set_long_name(self, self->name);
self->short_name = self->name;
self->syms = RB_ROOT;
self->find_symbol = dso__find_symbol;
@ -888,7 +899,7 @@ bool fetch_build_id_table(struct list_head *head)
continue;
have_buildid = true;
memset(&b.header, 0, sizeof(b.header));
len = strlen(pos->long_name) + 1;
len = pos->long_name_len + 1;
len = ALIGN(len, 64);
b.header.size = sizeof(b) + len;
@ -1165,6 +1176,7 @@ static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
dso_name[PATH_MAX];
struct map *map;
struct rb_node *last;
char *long_name;
if (dot == NULL || strcmp(dot, ".ko"))
continue;
@ -1179,9 +1191,11 @@ static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
snprintf(path, sizeof(path), "%s/%s",
dirname, dent->d_name);
map->dso->long_name = strdup(path);
if (map->dso->long_name == NULL)
long_name = strdup(path);
if (long_name == NULL)
goto failure;
dso__set_long_name(map->dso, long_name);
dso__set_basename(map->dso);
err = dso__load_module_sym(map->dso, map, filter);
if (err < 0)
@ -1420,8 +1434,10 @@ struct dso *dsos__findnew(const char *name)
if (!dso) {
dso = dso__new(name);
if (dso != NULL)
if (dso != NULL) {
dsos__add(dso);
dso__set_basename(dso);
}
}
return dso;

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

@ -66,6 +66,7 @@ struct dso {
u8 has_build_id:1;
unsigned char origin;
u8 build_id[BUILD_ID_SIZE];
u16 long_name_len;
const char *short_name;
char *long_name;
char name[0];