linux-kernel - Re: [PATCH 2/2] x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK

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Message-ID: <CALCETrXO5+Qbmxgd10Z=30-i+D2NERxHTuTzOUsTAKNgAmMowg@mail.gmail.com>
Date:	Fri, 17 Jul 2015 10:02:00 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave@...1.net>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Brian Gerst <brgerst@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/2] x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT
 and use it on x86

On Fri, Jul 17, 2015 at 3:28 AM, Ingo Molnar <mingo@...nel.org> wrote:
> Don't burden architectures without dynamic task_struct sizing with the overhead
> of dynamic sizing.
>
> Also optimize the x86 code a bit by caching task_struct_size.

Looks generally sensible.

--Andy
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