diff options
| author | Masami Hiramatsu <mhiramat@redhat.com> | 2010-03-16 18:06:26 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-03-17 12:11:15 +0100 |
| commit | 7df2f32956cf0f1a45df38cd0e0fe0c3467580e8 (patch) | |
| tree | 1cccbf0d4239ebdd9c0f67762b5a2f0facbe53dc /tools/perf/util/probe-event.h | |
| parent | fb1587d869a399554220e166d4b90b581a8ade01 (diff) | |
perf probe: Add data structure member access support
Support accessing members in the data structures. With this,
perf-probe accepts data-structure members(IOW, it now accepts
dot '.' and arrow '->' operators) as probe arguemnts.
e.g.
./perf probe --add 'schedule:44 rq->curr'
./perf probe --add 'vfs_read file->f_op->read file->f_path.dentry'
Note that '>' can be interpreted as redirection in command-line.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100316220626.32050.57552.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/probe-event.h')
| -rw-r--r-- | tools/perf/util/probe-event.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 2a2f0a26dc6..cd308b0a4d9 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -45,9 +45,17 @@ struct perf_probe_point { bool retprobe; /* Return probe flag */ }; +/* Perf probe probing argument field chain */ +struct perf_probe_arg_field { + struct perf_probe_arg_field *next; /* Next field */ + char *name; /* Name of the field */ + bool ref; /* Referencing flag */ +}; + /* Perf probe probing argument */ struct perf_probe_arg { - char *name; /* Argument name */ + char *name; /* Argument name */ + struct perf_probe_arg_field *field; /* Structure fields */ }; /* Perf probe probing event (point + arg) */ @@ -86,6 +94,8 @@ extern void parse_kprobe_trace_command(const char *cmd, /* Events to command string */ extern char *synthesize_perf_probe_command(struct perf_probe_event *pev); extern char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev); +extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, + size_t len); /* Check the perf_probe_event needs debuginfo */ extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev); |