linux-kernel - Re: [RFC PATCH 11/12 v2] ptrace: mv task_struct->ptrace_message ptrace

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Date:	Fri, 29 May 2009 14:24:11 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Roland McGrath <roland@...hat.com>
Cc:	Christoph Hellwig <hch@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 11/12 v2] ptrace: mv task_struct->ptrace_message
	ptrace_ctx->message

On 05/28, Roland McGrath wrote:
>
> > Perhaps it is better to optimize out "mask != 0" check in ptrace_event().
> > This special !mask case is only needed for _report_clone(), we can use
> > mask == PT_PTRACED instead.
>
> Sure, that is fine.  But note it should always have been compiled away
> before anyway, since it's inline and constant in every caller.

Ah, I missed that.

I wonder if can kill "int trace" in do_fork/copy_process. Looks like we
can...

Oleg.

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