linux-kernel - Re: [PATCH x86/mm 06/11] x86 ptrace arch merge

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Message-Id: <20071129092852.3b7a4b2f.akpm@linux-foundation.org>
Date:	Thu, 29 Nov 2007 09:28:52 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Roland McGrath <roland@...hat.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH x86/mm 06/11] x86 ptrace arch merge

On Thu, 29 Nov 2007 04:00:14 -0800 (PST) Roland McGrath <roland@...hat.com> wrote:

> --- a/arch/x86/kernel/ptrace.c
> +++ b/arch/x86/kernel/ptrace.c
> @@ -461,12 +461,13 @@ static int ptrace_set_debugreg(struct task_struct *child,
>  void ptrace_disable(struct task_struct *child)
>  {
>  	user_disable_single_step(child);
> +#ifdef TIF_SYSCALL_EMU
>  	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> +#endif

Is TIF_SYSCALL_EMU ever undefined here?
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