From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rik van Riel Subject: Re: [PATCH 6/8] mm: remove free_area_cache use in powerpc architecture Date: Wed, 09 Jan 2013 15:57:09 -0500 Message-ID: <50EDD9A5.8060404@redhat.com> References: <1357694895-520-1-git-send-email-walken@google.com> <1357694895-520-7-git-send-email-walken@google.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1357694895-520-7-git-send-email-walken@google.com> Sender: owner-linux-mm@kvack.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Michel Lespinasse Cc: Benjamin Herrenschmidt , "James E.J. Bottomley" , Matt Turner , David Howells , Tony Luck , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org On 01/08/2013 08:28 PM, Michel Lespinasse wrote: > As all other architectures have been converted to use vm_unmapped_area(), > we are about to retire the free_area_cache. > > This change simply removes the use of that cache in > slice_get_unmapped_area(), which will most certainly have a > performance cost. Next one will convert that function to use the > vm_unmapped_area() infrastructure and regain the performance. > > Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rik van Riel Date: Wed, 09 Jan 2013 20:57:09 +0000 Subject: Re: [PATCH 6/8] mm: remove free_area_cache use in powerpc architecture Message-Id: <50EDD9A5.8060404@redhat.com> List-Id: References: <1357694895-520-1-git-send-email-walken@google.com> <1357694895-520-7-git-send-email-walken@google.com> In-Reply-To: <1357694895-520-7-git-send-email-walken@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Michel Lespinasse Cc: Benjamin Herrenschmidt , "James E.J. Bottomley" , Matt Turner , David Howells , Tony Luck , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org On 01/08/2013 08:28 PM, Michel Lespinasse wrote: > As all other architectures have been converted to use vm_unmapped_area(), > we are about to retire the free_area_cache. > > This change simply removes the use of that cache in > slice_get_unmapped_area(), which will most certainly have a > performance cost. Next one will convert that function to use the > vm_unmapped_area() infrastructure and regain the performance. > > Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by ozlabs.org (Postfix) with ESMTP id 26F142C0172 for ; Thu, 10 Jan 2013 07:57:14 +1100 (EST) Message-ID: <50EDD9A5.8060404@redhat.com> Date: Wed, 09 Jan 2013 15:57:09 -0500 From: Rik van Riel MIME-Version: 1.0 To: Michel Lespinasse Subject: Re: [PATCH 6/8] mm: remove free_area_cache use in powerpc architecture References: <1357694895-520-1-git-send-email-walken@google.com> <1357694895-520-7-git-send-email-walken@google.com> In-Reply-To: <1357694895-520-7-git-send-email-walken@google.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: Tony Luck , linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, "James E.J. Bottomley" , linux-kernel@vger.kernel.org, David Howells , linux-mm@kvack.org, linux-alpha@vger.kernel.org, Matt Turner , linuxppc-dev@lists.ozlabs.org, Andrew Morton List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 01/08/2013 08:28 PM, Michel Lespinasse wrote: > As all other architectures have been converted to use vm_unmapped_area(), > we are about to retire the free_area_cache. > > This change simply removes the use of that cache in > slice_get_unmapped_area(), which will most certainly have a > performance cost. Next one will convert that function to use the > vm_unmapped_area() infrastructure and regain the performance. > > Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934010Ab3AIU5V (ORCPT ); Wed, 9 Jan 2013 15:57:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:61162 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933735Ab3AIU5R (ORCPT ); Wed, 9 Jan 2013 15:57:17 -0500 Message-ID: <50EDD9A5.8060404@redhat.com> Date: Wed, 09 Jan 2013 15:57:09 -0500 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Michel Lespinasse CC: Benjamin Herrenschmidt , "James E.J. Bottomley" , Matt Turner , David Howells , Tony Luck , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org Subject: Re: [PATCH 6/8] mm: remove free_area_cache use in powerpc architecture References: <1357694895-520-1-git-send-email-walken@google.com> <1357694895-520-7-git-send-email-walken@google.com> In-Reply-To: <1357694895-520-7-git-send-email-walken@google.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/08/2013 08:28 PM, Michel Lespinasse wrote: > As all other architectures have been converted to use vm_unmapped_area(), > we are about to retire the free_area_cache. > > This change simply removes the use of that cache in > slice_get_unmapped_area(), which will most certainly have a > performance cost. Next one will convert that function to use the > vm_unmapped_area() infrastructure and regain the performance. > > Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel