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| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2010-10-21 19:13:23 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-10-21 15:59:06 -0200 |
| commit | cf6eb489e5c04c8f8d5fd7bf90b8346c987688bc (patch) | |
| tree | 3da471c3ae3f99cdcbec26cc95412a4b44506f3c /tools/perf/Documentation/perf-probe.txt | |
| parent | 632941c4f8fbd5b90dcb1672cd0422dfd7332bc9 (diff) | |
| download | op-kernel-dev-cf6eb489e5c04c8f8d5fd7bf90b8346c987688bc.zip op-kernel-dev-cf6eb489e5c04c8f8d5fd7bf90b8346c987688bc.tar.gz | |
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/Documentation/perf-probe.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-probe.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt index 27d52da..72f5d9e 100644 --- a/tools/perf/Documentation/perf-probe.txt +++ b/tools/perf/Documentation/perf-probe.txt @@ -17,6 +17,8 @@ or 'perf probe' --list or 'perf probe' --line='FUNC[:RLN[+NUM|:RLN2]]|SRC:ALN[+NUM|:ALN2]' +or +'perf probe' --vars='PROBEPOINT' DESCRIPTION ----------- @@ -57,6 +59,11 @@ OPTIONS Show source code lines which can be probed. This needs an argument which specifies a range of the source code. (see LINE SYNTAX for detail) +-V:: +--vars=:: + Show available local variables at given probe point. The argument + syntax is same as PROBE SYNTAX, but NO ARGs. + -f:: --force:: Forcibly add events with existing name. |
