Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422881AbXBPAdp (ORCPT ); Thu, 15 Feb 2007 19:33:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422883AbXBPAdo (ORCPT ); Thu, 15 Feb 2007 19:33:44 -0500 Received: from moutng.kundenserver.de ([212.227.126.174]:57445 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422881AbXBPAdo convert rfc822-to-8bit (ORCPT ); Thu, 15 Feb 2007 19:33:44 -0500 From: Arnd Bergmann To: paulmck@linux.vnet.ibm.com Subject: Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU =?iso-8859-1?q?profiling=09updated=09patch?= Date: Fri, 16 Feb 2007 01:33:13 +0100 User-Agent: KMail/1.9.5 Cc: Carl Love , linuxppc-dev@ozlabs.org, cbe-oss-dev@ozlabs.org, oprofile-list@lists.sourceforge.net, linux-kernel@vger.kernel.org References: <1171497138.23691.8.camel@dyn9047021078.beaverton.ibm.com> <1171570918.31179.36.camel@dyn9047021078.beaverton.ibm.com> <20070215215047.GE1913@linux.vnet.ibm.com> In-Reply-To: <20070215215047.GE1913@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200702160133.14330.arnd@arndb.de> X-Provags-ID: kundenserver.de abuse@kundenserver.de login:c48f057754fc1b1a557605ab9fa6da41 X-Provags-ID2: V01U2FsdGVkX1+EG+a2ddSudI5+5JfGgVC8usLDfpSB+WZTTfOC49k2Tm4rE3+SDTl+M5X+2WxloOkxCr2i7M+ynepvpgvXhO8qxaTqTfmXtPySQArXpNzd3g== Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 604 Lines: 13 On Thursday 15 February 2007 22:50, Paul E. McKenney wrote: > Is this 1.5ms with interrupts disabled? ?This time period is problematic > from a realtime perspective if so -- need to be able to preempt. No, interrupts should be enabled here. Still, 1.5ms is probably a little too long without a cond_resched() in case kernel preemption is disabled. Arnd <>< - 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/