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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2010-10-21 06:13:41 -0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-10-21 14:11:44 -0400
commit469b9b88488e89114bb3e9ac5ee7906b7b96123f (patch)
tree9f002195a8b1167eddbe560ac834e6ba2dedb19f /tools/perf/util/map.h
parentfb8c5a56c7ddbc2b0d2ee7a8da60fe1355f75141 (diff)
perf probe: Add basic module support
Add basic module probe support on perf probe. This introduces "--module <MODNAME>" option to perf probe for putting probes and showing lines and variables in the given module. Currently, this supports only probing on running modules. Supporting off-line module probing is the next step. e.g.) [show lines] # ./perf probe --module drm -L drm_vblank_info <drm_vblank_info:0> 0 int drm_vblank_info(struct seq_file *m, void *data) 1 { struct drm_info_node *node = (struct drm_info_node *) m->private 3 struct drm_device *dev = node->minor->dev; ... [show vars] # ./perf probe --module drm -V drm_vblank_info:3 Available variables at drm_vblank_info:3 @<drm_vblank_info+20> (unknown_type) data struct drm_info_node* node struct seq_file* m [put a probe] # ./perf probe --module drm drm_vblank_info:3 node m Add new event: probe:drm_vblank_info (on drm_vblank_info:3 with node m) You can now use it on all perf tools, such as: perf record -e probe:drm_vblank_info -aR sleep 1 [list probes] # ./perf probe -l probe:drm_vblank_info (on drm_vblank_info:3@drivers/gpu/drm/drm_info.c with ... Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20101021101341.3542.71638.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/map.h')
-rw-r--r--tools/perf/util/map.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 78575796d5f3..b397c0383728 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -215,6 +215,16 @@ struct symbol *map_groups__find_function_by_name(struct map_groups *self,
215 return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter); 215 return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter);
216} 216}
217 217
218static inline
219struct symbol *machine__find_kernel_function_by_name(struct machine *self,
220 const char *name,
221 struct map **mapp,
222 symbol_filter_t filter)
223{
224 return map_groups__find_function_by_name(&self->kmaps, name, mapp,
225 filter);
226}
227
218int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, 228int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
219 int verbose, FILE *fp); 229 int verbose, FILE *fp);
220 230