linux-kernel - Re: [PATCH] RWSEM: Rewrite rwsem.c and rwsem-spinlock.c more simply.

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Message-ID: <87skyfgg4y.fsf@basil.nowhere.org>
Date:	25 Mar 2008 13:08:45 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	"Robert P. J. Day" <rpjday@...shcourse.ca>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH] RWSEM: Rewrite rwsem.c and rwsem-spinlock.c more simply.

"Robert P. J. Day" <rpjday@...shcourse.ca> writes:

> Rewrite these source files more simply by deleting the superfluous
> "tsk" task_struct pointer and rephrasing in terms of the "current"
> task pointer.

This is likely a code pessimization because "current" is inline
assembler and many gcc versions cannot CSE it.

-Andi
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