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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2010-10-21 19:13:41 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-10-21 16:11:44 -0200
commit469b9b88488e89114bb3e9ac5ee7906b7b96123f (patch)
tree9f002195a8b1167eddbe560ac834e6ba2dedb19f /tools/perf/util/probe-finder.h
parentfb8c5a56c7ddbc2b0d2ee7a8da60fe1355f75141 (diff)
downloadop-kernel-dev-469b9b88488e89114bb3e9ac5ee7906b7b96123f.zip
op-kernel-dev-469b9b88488e89114bb3e9ac5ee7906b7b96123f.tar.gz
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/probe-finder.h')
-rw-r--r--tools/perf/util/probe-finder.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index 516912a..bba69d4 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -22,7 +22,7 @@ extern int find_probe_trace_events(int fd, struct perf_probe_event *pev,
int max_tevs);
/* Find a perf_probe_point from debuginfo */
-extern int find_perf_probe_point(int fd, unsigned long addr,
+extern int find_perf_probe_point(unsigned long addr,
struct perf_probe_point *ppt);
/* Find a line range */
@@ -35,6 +35,7 @@ extern int find_available_vars_at(int fd, struct perf_probe_event *pev,
#include <dwarf.h>
#include <libdw.h>
+#include <libdwfl.h>
#include <version.h>
struct probe_finder {
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