linux-kernel - Re: [RFC] TIF_NOTIFY_RESUME, arch/*/*/*signal*.c and all such

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Message-ID: <20120428033606.GU6871@ZenIV.linux.org.uk>
Date:	Sat, 28 Apr 2012 04:36:06 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Oleg Nesterov <oleg@...hat.com>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] TIF_NOTIFY_RESUME, arch/*/*/*signal*.c and all such

On Sat, Apr 28, 2012 at 04:32:45AM +0100, Al Viro wrote:
> diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
> index 82aaf0a..e147619 100644
> --- a/arch/arm/kernel/entry-common.S
> +++ b/arch/arm/kernel/entry-common.S
> @@ -57,6 +57,9 @@ work_pending:
>  	 * TIF_SIGPENDING or TIF_NOTIFY_RESUME must've been set if we got here
>  	 */
>  	mov	r0, sp				@ 'regs'
> +	ldr	r2, [sp, #S_PSR]
> +	tst	r2, #15
> +	be	no_work_pending

bne, actually.  Apologies for braino...
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