Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
From: Herbert Xu <hidden>
Date: 2007-08-15 23:42:52
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On Wed, Aug 15, 2007 at 11:45:20AM -0700, Paul E. McKenney wrote:
On Wed, Aug 15, 2007 at 07:19:57PM +0100, David Howells wrote:quoted
Herbert Xu [off-list ref] wrote:quoted
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.
Remeber we're talking about atomic_read/atomic_set. Please cite the actual file/function name you have in mind. Thanks, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} [off-list ref] Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt