tree 3d844f8a6c4b58f60b6a97510a08d703b455c22e
parent 1c5474a65bf15a4cb162dfff86d6d0b5a08a740c
author Arjan van de Ven <arjan@linux.intel.com> 1279562382 -0700
committer Pekka Enberg <penberg@cs.helsinki.fi> 1279609403 +0300

slab: use deferable timers for its periodic housekeeping

slab has a "once every 2 second" timer for its housekeeping.
As the number of logical processors is growing, its more and more
common that this 2 second timer becomes the primary wakeup source.

This patch turns this housekeeping timer into a deferable timer,
which means that the timer does not interrupt idle, but just runs
at the next event that wakes the cpu up.

The impact is that the timer likely runs a bit later, but during the
delay no code is running so there's not all that much reason for
a difference in housekeeping to occur because of this delay.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>