From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752518Ab0HSKYq (ORCPT ); Thu, 19 Aug 2010 06:24:46 -0400 Received: from gate.crashing.org ([63.228.1.57]:48099 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752438Ab0HSKYp (ORCPT ); Thu, 19 Aug 2010 06:24:45 -0400 Subject: Re: 64-bit ppc rwsem From: Benjamin Herrenschmidt To: David Miller Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, paulus@au.ibm.com, linuxppc-dev@lists.ozlabs.org In-Reply-To: <20100818.222925.233689776.davem@davemloft.net> References: <1282107803.22370.173.camel@pasglop> <20100817.222818.193699062.davem@davemloft.net> <1282195403.22370.296.camel@pasglop> <20100818.222925.233689776.davem@davemloft.net> Content-Type: text/plain; charset="UTF-8" Date: Thu, 19 Aug 2010 20:24:19 +1000 Message-ID: <1282213459.22370.357.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2010-08-18 at 22:29 -0700, David Miller wrote: > From: Benjamin Herrenschmidt > Date: Thu, 19 Aug 2010 15:23:23 +1000 > > > Similar here, but using atomic_long_t instead so it works for 32-bit too > > for me. I suppose we could make that part common indeed. > > > > What about asm-generic/rwsem-atomic.h or rwsem-cmpxchg.h ? > > Using rwsem-cmpxchg.h sounds best I guess. Ok, I'll send a new patch tomorrow that does that. Cheers, Ben. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Date: Thu, 19 Aug 2010 10:24:19 +0000 Subject: Re: 64-bit ppc rwsem Message-Id: <1282213459.22370.357.camel@pasglop> List-Id: References: <1282107803.22370.173.camel@pasglop> <20100817.222818.193699062.davem@davemloft.net> <1282195403.22370.296.camel@pasglop> <20100818.222925.233689776.davem@davemloft.net> In-Reply-To: <20100818.222925.233689776.davem@davemloft.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: David Miller Cc: torvalds@linux-foundation.org, paulus@au.ibm.com, linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org On Wed, 2010-08-18 at 22:29 -0700, David Miller wrote: > From: Benjamin Herrenschmidt > Date: Thu, 19 Aug 2010 15:23:23 +1000 > > > Similar here, but using atomic_long_t instead so it works for 32-bit too > > for me. I suppose we could make that part common indeed. > > > > What about asm-generic/rwsem-atomic.h or rwsem-cmpxchg.h ? > > Using rwsem-cmpxchg.h sounds best I guess. Ok, I'll send a new patch tomorrow that does that. Cheers, Ben. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D0D52B70D6 for ; Thu, 19 Aug 2010 20:24:43 +1000 (EST) Subject: Re: 64-bit ppc rwsem From: Benjamin Herrenschmidt To: David Miller In-Reply-To: <20100818.222925.233689776.davem@davemloft.net> References: <1282107803.22370.173.camel@pasglop> <20100817.222818.193699062.davem@davemloft.net> <1282195403.22370.296.camel@pasglop> <20100818.222925.233689776.davem@davemloft.net> Content-Type: text/plain; charset="UTF-8" Date: Thu, 19 Aug 2010 20:24:19 +1000 Message-ID: <1282213459.22370.357.camel@pasglop> Mime-Version: 1.0 Cc: torvalds@linux-foundation.org, paulus@au.ibm.com, linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2010-08-18 at 22:29 -0700, David Miller wrote: > From: Benjamin Herrenschmidt > Date: Thu, 19 Aug 2010 15:23:23 +1000 > > > Similar here, but using atomic_long_t instead so it works for 32-bit too > > for me. I suppose we could make that part common indeed. > > > > What about asm-generic/rwsem-atomic.h or rwsem-cmpxchg.h ? > > Using rwsem-cmpxchg.h sounds best I guess. Ok, I'll send a new patch tomorrow that does that. Cheers, Ben.