Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
From: Satyam Sharma <hidden>
Date: 2007-08-18 01:28:56
Also in:
lkml, netdev
From: Satyam Sharma <hidden>
Date: 2007-08-18 01:28:56
Also in:
lkml, netdev
On Fri, 17 Aug 2007, Christoph Lameter wrote:
On Fri, 17 Aug 2007, Paul E. McKenney wrote:quoted
On Sat, Aug 18, 2007 at 08:09:13AM +0800, Herbert Xu wrote:quoted
On Fri, Aug 17, 2007 at 04:59:12PM -0700, Paul E. McKenney wrote:quoted
gcc bugzilla bug #33102, for whatever that ends up being worth. ;-)I had totally forgotten that I'd already filed that bug more than six years ago until they just closed yours as a duplicate of mine :) Good luck in getting it fixed!Well, just got done re-opening it for the third time. And a local gcc community member advised me not to give up too easily. But I must admit that I am impressed with the speed that it was identified as duplicate. Should be entertaining! ;-)Right. ROTFL... volatile actually breaks atomic_t instead of making it safe. x++ becomes a register load, increment and a register store. Without volatile we can increment the memory directly.
No code does (or would do, or should do): x.counter++; on an "atomic_t x;" anyway.