From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764860AbZATAYs (ORCPT ); Mon, 19 Jan 2009 19:24:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764079AbZATARp (ORCPT ); Mon, 19 Jan 2009 19:17:45 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:54534 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763381AbZATARe (ORCPT ); Mon, 19 Jan 2009 19:17:34 -0500 Message-Id: <20090120001732.732175373@goodmis.org> References: <20090120001542.687427797@goodmis.org> User-Agent: quilt/0.46-1 Date: Mon, 19 Jan 2009 19:15:45 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Frederic Weisbecker , Markus Metzger , Steven Rostedt Subject: [PATCH 3/8] x86, ftrace, hw-branch-tracer: reset trace buffer on close Content-Disposition: inline; filename=0003-x86-ftrace-hw-branch-tracer-reset-trace-buffer-on.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Markus Metzger Reset the ftrace buffer on close. Since we use cyclic buffers, the trace is not contiguous, anyway. Signed-off-by: Markus Metzger Signed-off-by: Steven Rostedt --- kernel/trace/trace_hw_branches.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/kernel/trace/trace_hw_branches.c b/kernel/trace/trace_hw_branches.c index e56df2c..372b47a 100644 --- a/kernel/trace/trace_hw_branches.c +++ b/kernel/trace/trace_hw_branches.c @@ -274,6 +274,11 @@ static void trace_bts_prepare(struct trace_iterator *iter) mutex_unlock(&bts_tracer_mutex); } +static void trace_bts_close(struct trace_iterator *iter) +{ + tracing_reset_online_cpus(iter->tr); +} + void trace_hw_branch_oops(void) { mutex_lock(&bts_tracer_mutex); @@ -292,7 +297,8 @@ struct tracer bts_tracer __read_mostly = .print_line = bts_trace_print_line, .start = bts_trace_start, .stop = bts_trace_stop, - .open = trace_bts_prepare + .open = trace_bts_prepare, + .close = trace_bts_close }; __init static int init_bts_trace(void) -- 1.5.6.5 --