From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758122Ab1EaHrU (ORCPT ); Tue, 31 May 2011 03:47:20 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:44774 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754064Ab1EaHrR convert rfc822-to-8bit (ORCPT ); Tue, 31 May 2011 03:47:17 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=VHPBEq5LvkJVbrJt69PjCYut4Rwe0DWliHEqm6bkMwMndlS0XEMexIhRC2359jg2Lc pnFNZyxXiYRzROd+zt05gTsJZ1ENGqHXGDnttXF2LwWReDwKofdQVZgeWSVyJhXylcwb GZ9je6AK7fp9LcwwvJ/pf6DT2ZvFv+zDEbGmA= MIME-Version: 1.0 In-Reply-To: <1306006756-32009-1-git-send-email-geert@linux-m68k.org> References: <1306006756-32009-1-git-send-email-geert@linux-m68k.org> Date: Tue, 31 May 2011 09:47:15 +0200 X-Google-Sender-Auth: BqyPYEsuDcduP-xy7QxbjM4KsFI Message-ID: Subject: Re: [PATCH 0/4] resources: Add lookup_resource() From: Geert Uytterhoeven To: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, linux-m68k@vger.kernel.org Cc: "David S. Miller" , Andrew Morton Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 21, 2011 at 21:39, Geert Uytterhoeven wrote: > The resource system is a nice existing subsystem to implement simple allocators > on top of. > Unfortunately, there's no official method to find an existing resource by a > resource start address, which is needed for a freeing function that just takes > the start address of the region to free. > > Currently there are 3 users of the resource subsystem that implement this by > traversing the resource tree theirselves: >  - The Amiga Chip RAM allocator on m68k, >  - iomap()/iounmap() on sparc, >  - DMA allocation API on sparc. > They all lack locking of the resource tree, as resource_lock is static in > kernel/resource.c. > > Hence this patchset adds lookup_resource() and converts the above users to it. > >  [1/4] sparc: _sparc_find_resource() should check for exact matches >  [2/4] resources: Add lookup_resource() >  [3/4] m68k/amiga: Chip RAM - Use lookup_resource() >  [4/4] sparc: iounmap() and *_free_coherent() - Use lookup_resource() As I got two acks from David for the sparc bits and no objections, I queued these on my for-2.6.41 and for-next branches. Gr{oetje,eeting}s,                         Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that.                                 -- Linus Torvalds