Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754903Ab0FXLId (ORCPT ); Thu, 24 Jun 2010 07:08:33 -0400 Received: from one.firstfloor.org ([213.235.205.2]:58313 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754764Ab0FXLIb (ORCPT ); Thu, 24 Jun 2010 07:08:31 -0400 Date: Thu, 24 Jun 2010 13:08:30 +0200 From: Andi Kleen To: Peter Zijlstra Cc: Andi Kleen , Huang Ying , Ingo Molnar , "H.PeterA" <"nvin hpa"@zytor.com>, linux-kernel@vger.kernel.org Subject: Re: [RFC][PATCH] irq_work Message-ID: <20100624110830.GC578@basil.fritz.box> References: <1277362243.3947.20.camel@yhuang-dev.sh.intel.com> <1277362680.1875.845.camel@laptop> <1277363069.3947.30.camel@yhuang-dev.sh.intel.com> <1277363993.1875.847.camel@laptop> <1277364453.3947.64.camel@yhuang-dev.sh.intel.com> <1277364727.1875.857.camel@laptop> <20100624102725.GA578@basil.fritz.box> <1277375409.1875.943.camel@laptop> <20100624105254.GB578@basil.fritz.box> <1277377121.1875.948.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1277377121.1875.948.camel@laptop> 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 Content-Length: 698 Lines: 18 > And I really want hardirq context for perf callbacks, some code actually > relies on it (I used to have the fallback in the timer softirq and that Surely that could be fixed? *requiring* hard irq context sounds weird. > broke thing at some point). I have one case that needs to sleep (but only when interrupting user code) They key thing in it really is to switch stacks back to process. -andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/