From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from pandora.arm.linux.org.uk (pandora.arm.linux.org.uk [IPv6:2001:4d48:ad52:3201:214:fdff:fe10:1be6]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3qW9bq1cN0zDqCj for ; Fri, 25 Mar 2016 02:39:51 +1100 (AEDT) Date: Thu, 24 Mar 2016 15:36:58 +0000 From: Russell King - ARM Linux To: Jiri Slaby Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Richard Henderson , Ivan Kokshaysky , Matt Turner , Vineet Gupta , Catalin Marinas , Will Deacon , Haavard Skinnemoen , Hans-Christian Egtvedt , Steven Miao , Mark Salter , Aurelien Jacquiot , Mikael Starvik , Jesper Nilsson , Yoshinori Sato , Richard Kuo , Tony Luck , Fenghua Yu , Geert Uytterhoeven , James Hogan , Michal Simek , Ralf Baechle , David Howells , Koichi Yasutake , Ley Foon Tan , Jonas Bonn , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , Chen Liqin , Lennox Wu , Rich Felker , "David S. Miller" , Chris Metcalf , Jeff Dike , Richard Weinberger , Guan Xuetao , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Chris Zankel , Max Filippov , Peter Zijlstra , linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, adi-buildroot-devel@lists.sourceforge.net, linux-c6x-dev@linux-c6x.org, linux-cris-kernel@axis.com, uclinux-h8-devel@lists.sourceforge.jp, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-metag@vger.kernel.org, linux-mips@linux-mips.org, linux-am33-list@redhat.com, nios2-dev@lists.rocketboards.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net, user-mode-linux-user@lists.sourceforge.net, linux-xtensa@linux-xtensa.org Subject: Re: [PATCH 3/4] exit_thread: accept a task parameter to be exited Message-ID: <20160324153658.GU19428@n2100.arm.linux.org.uk> References: <1458824294-29733-1-git-send-email-jslaby@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1458824294-29733-1-git-send-email-jslaby@suse.cz> Sender: Russell King - ARM Linux List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, Mar 24, 2016 at 01:58:13PM +0100, Jiri Slaby wrote: > We need to call exit_thread from copy_process in a fail path. So make > it accept task_struct as a parameter. Hmm, so what this means is that exit_thread() can now be called for threads which are not running on the CPU. So, I think the comment in arch/arm/vfp/vfpmodule.c needs to be updated: * THREAD_NOTIFY_EXIT * - the thread (v) will be running on the local CPU, so * v === current_thread_info() along with this change, since that becomes false. The code, however, looks like it'll cope just fine with that being false, as will the other users of THREAD_NOTIFY_EXIT in ARM. Thanks. -- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.