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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2010-10-21 14:13:23 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-10-21 21:59:06 +0400
commitcf6eb489e5c04c8f8d5fd7bf90b8346c987688bc (patch)
tree3da471c3ae3f99cdcbec26cc95412a4b44506f3c /tools/perf/util/probe-event.h
parent632941c4f8fbd5b90dcb1672cd0422dfd7332bc9 (diff)
downloadlinux-cf6eb489e5c04c8f8d5fd7bf90b8346c987688bc.tar.xz
perf probe: Show accessible local variables
Add -V (--vars) option for listing accessible local variables at given probe point. This will help finding which local variables are available for event arguments. e.g.) # perf probe -V call_timer_fn:23 Available variables at call_timer_fn:23 @<run_timer_softirq+345> function_type* fn int preempt_count long unsigned int data struct list_head work_list struct list_head* head struct timer_list* timer struct tvec_base* base 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: <20101021101323.3542.40282.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-event.h')
-rw-r--r--tools/perf/util/probe-event.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
index 5af39243a25b..727a7fe81a02 100644
--- a/tools/perf/util/probe-event.h
+++ b/tools/perf/util/probe-event.h
@@ -90,6 +90,12 @@ struct line_range {
struct list_head line_list; /* Visible lines */
};
+/* List of variables */
+struct variable_list {
+ struct probe_trace_point point; /* Actual probepoint */
+ struct strlist *vars; /* Available variables */
+};
+
/* Command string to events */
extern int parse_perf_probe_command(const char *cmd,
struct perf_probe_event *pev);
@@ -115,6 +121,8 @@ extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
extern int del_perf_probe_events(struct strlist *dellist);
extern int show_perf_probe_events(void);
extern int show_line_range(struct line_range *lr);
+extern int show_available_vars(struct perf_probe_event *pevs, int npevs,
+ int max_probe_points);
/* Maximum index number of event-name postfix */