From 469b9b88488e89114bb3e9ac5ee7906b7b96123f Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 21 Oct 2010 19:13:41 +0900 Subject: perf probe: Add basic module support Add basic module probe support on perf probe. This introduces "--module " 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 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 @ (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 Cc: Paul Mackerras Cc: Ingo Molnar Cc: Frederic Weisbecker LKML-Reference: <20101021101341.3542.71638.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/map.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'tools/perf/util/map.h') diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h index 78575796d5f..b397c038372 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, return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter); } +static inline +struct symbol *machine__find_kernel_function_by_name(struct machine *self, + const char *name, + struct map **mapp, + symbol_filter_t filter) +{ + return map_groups__find_function_by_name(&self->kmaps, name, mapp, + filter); +} + int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, int verbose, FILE *fp); -- cgit v1.2.3-70-g09d2