Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
From: Paul E. McKenney <hidden>
Date: 2007-08-15 23:53:59
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On Thu, Aug 16, 2007 at 07:41:46AM +0800, Herbert Xu wrote:
On Wed, Aug 15, 2007 at 11:45:20AM -0700, Paul E. McKenney wrote:quoted
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.
Yep, we are indeed talking about atomic_read()/atomic_set(). We have been through this issue already in this thread. Thanx, Paul