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[209.132.180.67]) by mx.google.com with ESMTP id m1si632639pgm.194.2019.01.16.21.43.34; Wed, 16 Jan 2019 21:43:50 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=ZFkhegS2; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405075AbfAPQEa (ORCPT + 99 others); Wed, 16 Jan 2019 11:04:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:58224 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727080AbfAPQEa (ORCPT ); Wed, 16 Jan 2019 11:04:30 -0500 Received: from quaco.ghostprotocols.net (unknown [179.97.41.186]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B8648205C9; Wed, 16 Jan 2019 16:04:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547654669; bh=QEHKnuDT6konLZMzDqiB4AYHn+rVHj/oJh15tXeF584=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZFkhegS2xKL/KNhPOYmR7Tju8Gab7gTfgGKbc+62KNv7TjL6Ad0FgNP30FJb89F/P bjXc/0pkUjG0bO1EIUtvGrIgSe4uoW9Z+HK78Ahiw4XzGwdzFI0oMZwoC68rcdhr1P FICOmHBHCA8eaKaJglgO6X+hQyCLE1+rqxEJj7qs= Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 617CD41AB5; Wed, 16 Jan 2019 13:04:22 -0300 (-03) Date: Wed, 16 Jan 2019 13:04:22 -0300 From: Arnaldo Carvalho de Melo To: Nick Clifton Cc: Namhyung Kim , Jiri Olsa , lkml , Ingo Molnar , Alexander Shishkin , Peter Zijlstra , Michael Petlan , Masami Hiramatsu , kernel-team@lge.com Subject: Re: [RFC] perf tools: Filter out hidden symbols from labels Message-ID: <20190116160422.GH2243@kernel.org> References: <20190115135354.11572-1-jolsa@kernel.org> <960f0b83-a623-67a6-ab55-d56139d10ba2@redhat.com> <20190115163540.GA20159@kernel.org> <20190116043735.GA31070@sejong> <35bf274a-f91e-1b4f-398a-dbe6f4105dfd@redhat.com> <20190116133117.GA2243@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Wed, Jan 16, 2019 at 03:47:50PM +0000, Nick Clifton escreveu: > Hi Arnaldo, > > >> Unfortunately the annobin notes will probably not be very helpful as they > >> only record a minor subset of the typical gcc command line options. > >> (Specifically: -O, -g, -D_FORTIFY_SOURCE, -D_GLIBCXX_ASSERTIONS, > >> -fcf-protection, -fpic (and variants), -fshort-enum, -fstack-clash-protection, > >> -fstack-protector, -mstackrealign, -fexceptions). > > > > Humm, is -fno-omit-frame-pointer there by any chance? :-) > > Not at the moment, although it could be added. All of the options > mentioned in the above list are recorded because they have an impact > on the security hardening of the binary. Other options are ignored > because, at least for now, they have no security implications. Would be interestint to have that info, as we could hint the user that backtraces should be done with something else than '--call-graph fp' :-) - Arnaldo