On Tue, 6 Feb 2007, Oleg Verych wrote: > On Tue, Feb 06, 2007 at 02:32:44PM +0100, Oliver Neukum wrote: > > Am Dienstag, 6. Februar 2007 14:34 schrieb Oleg Verych: > > > On Tue, Feb 06, 2007 at 01:18:13PM +0100, Oliver Neukum wrote: > > > > Am Dienstag, 6. Februar 2007 12:31 schrieb Joris van Rantwijk: > > > > > A spinlock should certainly be sufficient. I think spinlocks have a > > > > > memory barrier built-in, otherwise they would be pretty useless. > > > > > > > > They do, as do all locks. > > > > > > Hm. I thought problem is serializing, rather than access to lock > > > variable. And i doubt memory barrier is a *must* for spin locks. > > > > Locks are used to guarantee that nobody sees an inconsistent state. > > Therefore memory ordering must be ensured. > > Documentation/io_ordering.txt
Not to mention Documentation/memory_barriers.txt and Documentation/atomic_ops.txt. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
