[Xen-devel] [PATCH 0/3] xen: RCU: Improve the idle timer handling

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

Hello,

this series is the followup of my previous RCU series. It contains:
- the patch that makes the period of the RCU idle timer configurable, via a Xen
  boot time parameter, as suggested by Jan, during review of the original series
  (patch 2);
- the patch that makse the period of the RCU idle timer adaptive, but using the
  algorithm suggested by George, during review of the original series (patch 3).

Patch 1 is a fix for the fact that if we stop a timer that has already expired,
right now, we miss invoking the timer handler! This is a general bug, but is
particularly relevant for this series, as, without it, the RCU idle timer
handler is never run (and hence, George's algorithm can't work :-/).

Regards,
Dario
---
Dario Faggioli (3):
      xen: timers: don't miss a timer event because of stop_timer()
      xen: RCU: make the period of the idle timer configurable.
      xen: RCU: make the period of the idle timer adaptive.

 docs/misc/xen-command-line.markdown |    9 ++++++
 xen/common/rcupdate.c               |   57 ++++++++++++++++++++++++++++++++---
 xen/common/timer.c                  |   14 +++++++--
 3 files changed, 73 insertions(+), 7 deletions(-)
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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