2 Commits

Author	SHA1	Message	Date
Jeremy Kerr	82631f5dd1	powerpc: Add write barrier before enabling DTL flags ... Currently, we don't enforce any ordering for updates to the lppaca when enabling dtl logging, so we may end up enabling logging before the index fields have been established. This change adds a smp_wmb() before doing the actual enable. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	2009-03-27 16:58:23 +11:00
Jeremy Kerr	fc59a3fc8e	powerpc: Add virtual processor dispatch trace log ... pseries SPLPAR machines are able to retrieve a log of dispatch and preempt events from the hypervisor. With this information, we can see when and why each dispatch & preempt is occuring. This change adds a set of debugfs files allowing userspace to read this dispatch log. Based on initial patches from Nishanth Aravamudan <nacc@us.ibm.com>. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	2009-03-24 13:47:28 +11:00