Subject: Re: Race condition in generic soft interrupts code?
To: Jason Thorpe <>
From: Naoto Shimazaki <>
List: port-arm
Date: 07/20/2003 14:08:39
At Sat, 19 Jul 2003 08:43:52 -0700,
Jason Thorpe wrote:
> On Saturday, July 19, 2003, at 06:54  AM, Naoto Shimazaki wrote:
> > I'm not sure the implementation that masking interrupt on demand to
> > prevent to touch hardware if possible really improves the final
> > performance.  But I feel it might do.
> It was a huge performance improvement on i386 when it was implemented 
> years ago.  Also consider that poking the hardware is going to be an 
> uncached access, and thus could defeat any memory access optimization 
> that the memory controller might be doing.

Great!  I'll follow it on ixp1200 too.

Naoto Shimazaki