linux-kernel - Re: [off-list] a path toward killing thread

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Message-ID: <4CCEB83C-FBCF-4095-8770-892387438060@zytor.com>
Date:	Fri, 17 Jun 2016 16:10:59 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Al Viro <viro@...IV.linux.org.uk>,
	Andy Lutomirski <luto@...capital.net>
CC:	Kees Cook <keescook@...omium.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [off-list] a path toward killing thread_info

On June 17, 2016 4:04:31 PM PDT, Al Viro <viro@...IV.linux.org.uk> wrote:
>On Fri, Jun 17, 2016 at 03:41:49PM -0700, Andy Lutomirski wrote:
>
>> PeterZ, I'm thinking of adding task_ti_flags_ptr to directly find the
>> ti flags word given a task_struct * so the scheduler can use it. 
>Does
>> that seem reasonable to you?
>
>What are you trying to do?  Merge task_struct and thread_info?

Yes.

I did a half-finished patchset to do this once, in that I defined accessor functions which used container_of instead of pointers on architectures where this merge was enabled.
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