From c338aee853db197e1855b393e6d6cc667784537f Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 20 Nov 2009 20:51:27 -0200 Subject: perf symbols: Do lazy symtab loading for the kernel & modules too MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Cc: Frédéric Weisbecker Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras LKML-Reference: <1258757489-5978-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar --- tools/perf/util/symbol.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'tools/perf/util/symbol.h') 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); -- cgit v1.2.3