]> git.baikalelectronics.ru Git - kernel.git/commit
xen/events: Handle VIRQ_TIMER before any other hardirq in event loop.
authorKeir Fraser <keir.fraser@citrix.com>
Thu, 28 Mar 2013 14:03:36 +0000 (10:03 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tue, 2 Apr 2013 18:01:21 +0000 (14:01 -0400)
commit5947a7094e6bd640eac6a69c1bb7800d5deba6ef
treeacb076bd2f1a40d650dada64943b100b0c579979
parentcee6192797216e43c32d6e964c699aaa7ec644af
xen/events: Handle VIRQ_TIMER before any other hardirq in event loop.

This avoids any other hardirq handler seeing a very stale jiffies
value immediately after wakeup from a long idle period. The one
observable symptom of this was a USB keyboard, with software keyboard
repeat, which would always repeat a key immediately that it was
pressed. This is due to the key press waking the guest, the key
handler immediately runs, sees an old jiffies value, and then that
jiffies value significantly updated, before the key is unpressed.

Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
drivers/xen/events.c