Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751180AbaDOFBb (ORCPT ); Tue, 15 Apr 2014 01:01:31 -0400 Received: from one.firstfloor.org ([193.170.194.197]:55417 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750865AbaDOFBa (ORCPT ); Tue, 15 Apr 2014 01:01:30 -0400 Date: Tue, 15 Apr 2014 07:01:28 +0200 From: Andi Kleen To: Ling Ma Cc: Andi Kleen , mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com, neleai@seznam.cz, linux-kernel@vger.kernel.org, Ling Ma Subject: Re: [PATCH RFC] x86:Improve memset with general 64bit instruction Message-ID: <20140415050128.GH22728@two.firstfloor.org> References: <1396882237-27608-1-git-send-email-ling.ma@alipay.com> <877g71jdl8.fsf@tassilo.jf.intel.com> <20140413220334.GE22728@two.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 14, 2014 at 09:31:16PM +0800, Ling Ma wrote: > The kernel version 3.14 shows memcpy, memset occur 19622 and 14189 > times respectively. > so memset is still important for us, correct? Did you ever see it in a profile log as being hot? I haven't. Static counts don't mean much. -Andi -- 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/