lkml.org 
[lkml]   [2007]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
On Wed, Aug 15, 2007 at 07:19:57PM +0100, David Howells wrote:
> Herbert Xu <herbert@gondor.apana.org.au> wrote:
>
> > Let's turn this around. Can you give a single example where
> > the volatile semantics is needed in a legitimate way?
>
> Accessing H/W registers? But apart from that...

Communicating between process context and interrupt/NMI handlers using
per-CPU variables.

Thanx, Paul
-
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: 2007-08-15 20:49    [W:0.200 / U:0.912 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site