From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fgwmail7.fujitsu.co.jp (fgwmail7.fujitsu.co.jp [192.51.44.37]) by ozlabs.org (Postfix) with ESMTP id 7BC3267A76 for ; Wed, 16 Mar 2005 16:50:06 +1100 (EST) Message-ID: <4237C8F0.1010605@jp.fujitsu.com> Date: Wed, 16 Mar 2005 14:49:36 +0900 From: Takeharu KATO MIME-Version: 1.0 To: benh@kernel.crashing.org References: <20050303124435.GA24233@Redstar.dorchain.net> <4227153C.3030201@gmx.net> <20050303141832.GU25080@Redstar.dorchain.net> <20050304075703.GA15637@Redstar.dorchain.net> <422FD24F.4070108@jp.fujitsu.com> <20050310072803.GR4017@Redstar.dorchain.net> <423073A9.70404@ybb.ne.jp> <4231387D.6030204@jp.fujitsu.com> <1110932285.25201.66.camel@gaston> <4237C319.4050109@jp.fujitsu.com> In-Reply-To: <4237C319.4050109@jp.fujitsu.com> Content-Type: text/plain; charset=us-ascii; format=flowed Cc: linuxppc-dev@ozlabs.org Subject: Re: boot time scheduling hile atomic List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Benjamin: I forgot writing that I've sent the revised edition of the patch to the PPC-Dev ML. Please see the patch as ``boot time scheduling w hile atomic fix'' which I posted in 2005-03-15 from Patch tracking system for PowerPC Linux as follows. http://ozlabs.org/ppc32-patches/ It changes the implementation of kernel_thread function to be performed with function call. Regards, Takeharu KATO wrote: > But, the kernel invoke a system call trap when it execute kernel_thread call > (at rest_init line:382) on PowerPC. > The preemption count has positive value here. > So, PowerPC linux kernel invoke system call when the preempt count is up. > -- Takeharu KATO Fujitsu Limited Email:kato.takeharu at jp.fujitsu.com