[PATCH 5/9] locking/qrwlock: remove redundant cmpxchg barriers on writer slow-path
From: peterz@infradead.org (Peter Zijlstra)
Date: 2015-07-08 10:05:26
Also in:
linux-arch
On Tue, Jul 07, 2015 at 06:24:21PM +0100, Will Deacon wrote:
+#ifndef cmpxchg_relaxed +# define cmpxchg_relaxed cmpxchg +#endif
Should we collate this _relaxed stuff and make it 'official' instead of these ad-hoc/in-situ things? There's more archs that can usefully implement them than seem to have implemented them atm. Of course that means someone doing a full arch/* sweep, but hey.. :-)