From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935679Ab3DKMGe (ORCPT ); Thu, 11 Apr 2013 08:06:34 -0400 Received: from LGEMRELSE1Q.lge.com ([156.147.1.111]:48784 "EHLO LGEMRELSE1Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935359Ab3DKMFk (ORCPT ); Thu, 11 Apr 2013 08:05:40 -0400 X-AuditID: 9c93016f-b7b3fae0000004d3-d8-5166a711f319 From: Namhyung Kim To: Steven Rostedt , Arnaldo Carvalho de Melo Cc: Frederic Weisbecker , Peter Zijlstra , Ingo Molnar , Namhyung Kim , LKML Subject: [PATCH 4/6] tools lib traceevent: Add trace_seq_reset() Date: Thu, 11 Apr 2013 21:04:56 +0900 Message-Id: <1365681898-19897-4-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1365681898-19897-1-git-send-email-namhyung@kernel.org> References: <1365681898-19897-1-git-send-email-namhyung@kernel.org> X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Namhyung Kim 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. Cc: Steven Rostedt Cc: Frederic Weisbecker Signed-off-by: Namhyung Kim --- 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 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 * -- 1.7.11.7