CVS commit: [netbsd-3] src/sys/arch/xen/include

[Matthias Scheler <tron%netbsd.org@localhost>]

Module Name:    src
Committed By:   tron
Date:           Thu Apr 28 10:39:11 UTC 2005

Modified Files:
        src/sys/arch/xen/include [netbsd-3]: evtchn.h

Log Message:
Pull up revision 1.8 (requested by bouyer in ticket #193):
Event handling optimisations:
- sort the ih_evt_handler list by IPL, higher first. Otherwise some handlers
  would have been delayed, event if they could run at the current IPL.
- As ih_evt_handler is sorted, remove IPLs that have been processed for
  an event when calling hypervisor_set_ipending()
- In hypervisor_set_ipending(), enter the event in ipl_evt_mask only
  for the lowest IPL. As deffered IPLs are processed high to low,
  this ensure that hypervisor_enable_event() will be called only when all
  callbacks have been called for an event. We don't need the evtch_maskcount[]
  counters any more.
Thanks to YAMAMOTO Takashi for ideas and feedback.


To generate a diff of this commit:
cvs rdiff -r1.2.2.5 -r1.2.2.6 src/sys/arch/xen/include/evtchn.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.