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Message-ID: <tip-6a48aec3a7179b0cdae2339d5a4072214ee6c6fe@git.kernel.org>
Date: Fri, 19 Jul 2013 00:46:00 -0700
From: tip-bot for Namhyung Kim <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org,
hpa@...or.com, mingo@...nel.org, a.p.zijlstra@...llo.nl,
namhyung.kim@....com, namhyung@...nel.org, jolsa@...hat.com,
fweisbec@...il.com, rostedt@...dmis.org, dsahern@...il.com,
tglx@...utronix.de
Subject: [tip:perf/core] tools lib traceevent: Add trace_seq_reset()
Commit-ID: 6a48aec3a7179b0cdae2339d5a4072214ee6c6fe
Gitweb: http://git.kernel.org/tip/6a48aec3a7179b0cdae2339d5a4072214ee6c6fe
Author: Namhyung Kim <namhyung.kim@....com>
AuthorDate: Tue, 4 Jun 2013 14:20:19 +0900
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Fri, 12 Jul 2013 13:52:12 -0300
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@...nel.org>
Acked-by: Steven Rostedt <rostedt@...dmis.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Steven Rostedt <rostedt@...dmis.org>
Link: http://lkml.kernel.org/r/1370323231-14022-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/lib/traceevent/event-parse.h | 1 +
tools/lib/traceevent/trace-seq.c | 13 +++++++++++++
2 files changed, 14 insertions(+)
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index bfceab9..39f0c1d 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 a57db80..d7f2e68 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
*
--
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