lkml.org 
[lkml]   [2006]   [Dec]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it


On Wed, 6 Dec 2006, Christoph Lameter wrote:
>
> I'd really appreciate a cmpxchg that is generically available for
> all arches. It will allow lockless implementation for various performance
> criticial portions of the kernel.

I suspect ARM may have been the last one without one, no?

That said, cmpxchg won't necessarily be "high-performance" unless the hw
supports it naturally in hardware, so..

Russell, are you ok with the code DavidH posted (the "try 2" one)? I'd
like to get an ack from the ARM maintainer before applying it, but it
looked ok.

Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2009-11-18 23:46    [W:0.106 / U:0.644 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site