Subject: Re: Please Revert newlock2
To: Bucky Katz <>
From: David Laight <>
List: tech-kern
Date: 02/18/2007 18:50:38
On Sun, Feb 18, 2007 at 10:29:42AM -0800, Bucky Katz wrote:
> It has to be the later. The context switch overhead of 1:1 on ARM will
> cause a severe performance degradation.

That shouldn't matter.
Siince the threads share the VM space, the cache flushing needn't be done.
So there isn't any expensive context switch to do when one LWP wakes
another in the ame process.


David Laight: