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| author | Namhyung Kim <namhyung.kim@lge.com> | 2013-06-04 07:20:19 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-07-12 18:52:12 +0200 |
| commit | 6a48aec3a7179b0cdae2339d5a4072214ee6c6fe (patch) | |
| tree | 69c90f24708f8526819e9bb42601790757d4910c /tools/lib | |
| parent | tools lib traceevent: Add const qualifier to string arguments (diff) | |
| download | linux-6a48aec3a7179b0cdae2339d5a4072214ee6c6fe.tar.xz linux-6a48aec3a7179b0cdae2339d5a4072214ee6c6fe.zip | |
tools lib traceevent: Add trace_seq_reset()
Sometimes it'd be useful if existing trace_seq can be reused. But
currently it's impossible since there's no API to reset the trace_seq.
Let's add trace_seq_reset() for this case.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1370323231-14022-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/traceevent/event-parse.h | 1 | ||||
| -rw-r--r-- | tools/lib/traceevent/trace-seq.c | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h index bfceab948f22..39f0c1dca915 100644 --- a/tools/lib/traceevent/event-parse.h +++ b/tools/lib/traceevent/event-parse.h @@ -69,6 +69,7 @@ struct trace_seq { }; void trace_seq_init(struct trace_seq *s); +void trace_seq_reset(struct trace_seq *s); void trace_seq_destroy(struct trace_seq *s); extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) diff --git a/tools/lib/traceevent/trace-seq.c b/tools/lib/traceevent/trace-seq.c index a57db805136a..d7f2e68bc5b9 100644 --- a/tools/lib/traceevent/trace-seq.c +++ b/tools/lib/traceevent/trace-seq.c @@ -49,6 +49,19 @@ void trace_seq_init(struct trace_seq *s) } /** + * trace_seq_reset - re-initialize the trace_seq structure + * @s: a pointer to the trace_seq structure to reset + */ +void trace_seq_reset(struct trace_seq *s) +{ + if (!s) + return; + TRACE_SEQ_CHECK(s); + s->len = 0; + s->readpos = 0; +} + +/** * trace_seq_destroy - free up memory of a trace_seq * @s: a pointer to the trace_seq to free the buffer * |