Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758782AbZASJds (ORCPT ); Mon, 19 Jan 2009 04:33:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756123AbZASJdh (ORCPT ); Mon, 19 Jan 2009 04:33:37 -0500 Received: from mga09.intel.com ([134.134.136.24]:47452 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755862AbZASJdg (ORCPT ); Mon, 19 Jan 2009 04:33:36 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.37,288,1231142400"; d="scan'208";a="379581484" Date: Mon, 19 Jan 2009 10:33:31 +0100 From: Markus Metzger To: linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com Cc: markus.t.metzger@intel.com, markus.t.metzger@gmail.com, srostedt@redhat.com Subject: [patch 4/6] x86, ftrace, hw-branch-tracer: reset trace buffer on close Message-ID: <20090119103331.A18837@sedona.ch.intel.com> Mime-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.2.5i Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1897 Lines: 52 Reset the ftrace buffer on close. Since we use cyclic buffers, the trace is not contiguous, anyway. Signed-off-by: Markus Metzger --- Index: ftrace/kernel/trace/trace_hw_branches.c =================================================================== --- ftrace.orig/kernel/trace/trace_hw_branches.c 2009-01-16 16:20:04.000000000 +0100 +++ ftrace/kernel/trace/trace_hw_branches.c 2009-01-19 09:18:54.000000000 +0100 @@ -270,6 +270,11 @@ static void trace_bts_prepare(struct tra 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); @@ -288,7 +293,8 @@ 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) --------------------------------------------------------------------- Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen Germany Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Douglas Lusk, Peter Gleissner, Hannes Schwaderer Registergericht: Muenchen HRB 47456 Ust.-IdNr. VAT Registration No.: DE129385895 Citibank Frankfurt (BLZ 502 109 00) 600119052 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/