Messages in this thread | | | Date | Thu, 21 Nov 2013 22:55:17 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 RFC 1/3] documentation: Add needed ACCESS_ONCE() calls to memory-barriers.txt |
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On Thu, Nov 21, 2013 at 01:31:27PM -0800, Paul E. McKenney wrote: > From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> > > The Documentation/memory-barriers.txt file was written before the need > for ACCESS_ONCE() was fully appreciated. It therefore contains no > ACCESS_ONCE() calls, which can be a problem when people lift examples > from it. This commit therefore adds ACCESS_ONCE() calls.
So I find the repeated ACCESS_ONCE() significantly detracts from the readability of the text.
Can't we simply state that all accesses are assumed single-copy atomic and this can be achieved for naturally aligned words using ACCESS_ONCE() in C/C++ ?
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