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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Jiri Slaby <jslaby@suse.cz>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	Richard Henderson <rth@twiddle.net>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Matt Turner <mattst88@gmail.com>,
	Vineet Gupta <vgupta@synopsys.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Haavard Skinnemoen <hskinnemoen@gmail.com>,
	Hans-Christian Egtvedt <egtvedt@samfundet.no>,
	Steven Miao <realmz6@gmail.com>, Mark Salter <msalter@redhat.com>,
	Aurelien Jacquiot <a-jacquiot@ti.com>,
	Mikael Starvik <starvik@axis.com>,
	Jesper Nilsson <jesper.nilsson@axis.com>,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Richard Kuo <rkuo@codeaurora.org>,
	Tony Luck <tony.luck@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: [PATCH 3/4] exit_thread: accept a task parameter to be exited
Date: Thu, 24 Mar 2016 15:36:58 +0000	[thread overview]
Message-ID: <20160324153658.GU19428@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1458824294-29733-1-git-send-email-jslaby@suse.cz>

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.


  parent reply	other threads:[~2016-03-24 15:36 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-24 12:58 [PATCH 3/4] exit_thread: accept a task parameter to be exited Jiri Slaby
2016-03-24 13:03 ` Peter Zijlstra
2016-03-24 13:05   ` Jiri Slaby
2016-03-24 15:36 ` Russell King - ARM Linux [this message]
2016-03-25  8:32 ` [3/4] " Michael Ellerman

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