On Friday 14 April 2006 15:51, John Baldwin wrote: > jhb 2006-04-14 19:51:50 UTC > > FreeBSD src repository > > Modified files: > sys/kern kern_mutex.c > Log: > Mark the thread pointer used during an adaptive spin volatile so that the > compiler doesn't decide to cache td_state. Cachine the state would cause > the spinning thread to not notice when the owning thread stopped executing > (if it was preempted for example) which could result in livelock.
FYI, I've only seen this happen in a local branch, I haven't seen this happen with any CVS kernels. -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
