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authorArnaldo Carvalho de Melo <acme@redhat.com>2009-11-21 01:51:27 +0300
committerIngo Molnar <mingo@elte.hu>2009-11-21 16:11:33 +0300
commitc338aee853db197e1855b393e6d6cc667784537f (patch)
treef97fea21c608a689144302b8dd78ef29bfaa5c88 /tools/perf/util/symbol.h
parent78075caad99dc36ec6ef5826b7a5273ea14295fc (diff)
downloadlinux-c338aee853db197e1855b393e6d6cc667784537f.tar.xz
perf symbols: Do lazy symtab loading for the kernel & modules too
Just like we do with the other DSOs. This also simplifies the kernel_maps setup process, now all that the tools need to do is to call kernel_maps__init and the maps for the modules and kernel will be created, then, later, when kernel_maps__find_symbol() is used, it will also call maps__find_symbol that already checks if the symtab was loaded, loading it if needed. Now if one does 'perf top --hide_kernel_symbols' we won't pay the price of loading the (many) symbols in /proc/kallsyms or vmlinux. 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: <1258757489-5978-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/symbol.h')
-rw-r--r--tools/perf/util/symbol.h9
1 files changed, 3 insertions, 6 deletions
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 3d9d346d101b..7a129047c47d 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -64,6 +64,7 @@ struct dso {
u8 slen_calculated:1;
u8 loaded:1;
u8 has_build_id:1;
+ u8 kernel:1;
unsigned char origin;
u8 build_id[BUILD_ID_SIZE];
u16 long_name_len;
@@ -77,12 +78,8 @@ void dso__delete(struct dso *self);
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
-int dsos__load_modules(void);
-int dsos__load_modules_sym(symbol_filter_t filter);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
-int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter,
- int use_modules);
void dsos__fprintf(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp);
@@ -96,8 +93,8 @@ int sysfs__read_build_id(const char *filename, void *bf, size_t size);
bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
-struct dso *dsos__load_kernel(void);
-int load_kernel(symbol_filter_t filter, bool use_modules);
+int kernel_maps__init(bool use_modules);
+size_t kernel_maps__fprintf(FILE *fp);
void symbol__init(unsigned int priv_size);