From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1751659AbcBKJfo (ORCPT <rfc822;w@1wt.eu>);
	Thu, 11 Feb 2016 04:35:44 -0500
Received: from mail-pa0-f67.google.com ([209.85.220.67]:34896 "EHLO
	mail-pa0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1750968AbcBKJfi (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 11 Feb 2016 04:35:38 -0500
Message-ID: <1455183328.2885.18.camel@gmail.com>
Subject: Re: [PATCH v8 4/8] ppc64 ftrace_with_regs configuration variables
From: Balbir Singh <bsingharora@gmail.com>
To: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: Torsten Duwe <duwe@lst.de>, Michael Ellerman <mpe@ellerman.id.au>,
        Jiri Kosina <jkosina@suse.cz>, Miroslav Benes <mbenes@suse.cz>,
        Petr Mladek <pmladek@suse.com>, Jessica Yu <jeyu@redhat.com>,
        Steven Rostedt <rostedt@goodmis.org>, linuxppc-dev@lists.ozlabs.org,
        linux-kernel@vger.kernel.org, live-patching@vger.kernel.org
Date: Thu, 11 Feb 2016 20:35:28 +1100
In-Reply-To: <20160211083932.GA23103@linux.vnet.ibm.com>
References: <20160210174221.EBBEC692C8@newverein.lst.de>
	 <20160210174450.9C065692C8@newverein.lst.de>
	 <1455176897.2885.12.camel@gmail.com>
	 <20160211083932.GA23103@linux.vnet.ibm.com>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.18.4 (3.18.4-1.fc23) 
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Thu, 2016-02-11 at 14:09 +0530, Kamalesh Babulal wrote:
> * Balbir Singh <bsingharora@gmail.com> [2016-02-11 18:48:17]:
> 
> > On Wed, 2016-02-10 at 17:25 +0100, Torsten Duwe wrote:
> > 
> > snip
> > 
> > > diff --git a/arch/powerpc/gcc-mprofile-kernel-notrace.sh
> > > b/arch/powerpc/gcc-mprofile-kernel-notrace.sh
> > > new file mode 100755
> > > index 0000000..68d6482
> > > --- /dev/null
> > > +++ b/arch/powerpc/gcc-mprofile-kernel-notrace.sh
> > > @@ -0,0 +1,33 @@
> > > +#!/bin/sh
> > > +# Test whether the compile option -mprofile-kernel
> > > +# generates profiling code ( = a call to mcount), and
> > > +# whether a function without any global references sets
> > > +# the TOC pointer properly at the beginning, and
> > > +# whether the "notrace" function attribute successfully
> > > +# suppresses the _mcount call.
> > > +
> > > +echo "int func() { return 0; }" | \
> > > +    $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
> > > +    grep -q "mcount"
> > > +
> > > +trace_result=$?
> > > +
> > > +echo "int func() { return 0; }" | \
> > > +    $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
> > > +    sed -n -e '/func:/,/bl _mcount/p' | grep -q TOC
> > > +
> > > +leaf_toc_result=$?
> > > +
> > 
> > leaf_toc_result failed for me with gcc 5. I'll try and grab gcc-6
> > and give the patches a spin
> > 
> 
> It fails for me to on ppc64le but pass over ppc64
> 

This series is for ppc64le only, so we can safely ignore ppc64 for now

Regards,
Balbir Singh.