From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Torvalds Subject: Re: [PATCH 1/11] Add generic helpers for arch IPI function calls Date: Tue, 22 Apr 2008 10:29:38 -0700 (PDT) Message-ID: References: <1208851058-8500-1-git-send-email-jens.axboe@oracle.com> <1208851058-8500-2-git-send-email-jens.axboe@oracle.com> <20080422145105.GJ12774@kernel.dk> <20080422164947.GN12774@kernel.dk> <20080422170405.GO12774@kernel.dk> <20080422171324.GP12774@kernel.dk> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-Reply-To: <20080422171324.GP12774-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> Sender: linux-arch-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: To: Jens Axboe Cc: linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, npiggin-l3A5Bk7waGM@public.gmane.org On Tue, 22 Apr 2008, Jens Axboe wrote: > > But wait, falling back to wait cannot always be safe if we are called > with interrupts disabled. I don't see any way around using the global > fallback for that case. Hmm. Good point. It does look like you need three cases. Linus From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:54047 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763683AbYDVRab (ORCPT ); Tue, 22 Apr 2008 13:30:31 -0400 Date: Tue, 22 Apr 2008 10:29:38 -0700 (PDT) From: Linus Torvalds Subject: Re: [PATCH 1/11] Add generic helpers for arch IPI function calls In-Reply-To: <20080422171324.GP12774@kernel.dk> Message-ID: References: <1208851058-8500-1-git-send-email-jens.axboe@oracle.com> <1208851058-8500-2-git-send-email-jens.axboe@oracle.com> <20080422145105.GJ12774@kernel.dk> <20080422164947.GN12774@kernel.dk> <20080422170405.GO12774@kernel.dk> <20080422171324.GP12774@kernel.dk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-arch-owner@vger.kernel.org List-ID: To: Jens Axboe Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, npiggin@suse.de Message-ID: <20080422172938.TmTklkrrw4Zsv-AOvzQk4DAaAHG3nwqbQ-92HNF3h-4@z> On Tue, 22 Apr 2008, Jens Axboe wrote: > > But wait, falling back to wait cannot always be safe if we are called > with interrupts disabled. I don't see any way around using the global > fallback for that case. Hmm. Good point. It does look like you need three cases. Linus