K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2010-07-23T16:46:42.362705Z
K 7
svn:log
V 506
cpufreq: allocate long-lived buffer for handling of sysctl requests

At present the cpufreq sysctl handler for current level setting would
allocate and deallocate a temporary buffer of 24KB even to handle a
read-only query.  This puts unnecessary load on memory subsystem when
current level is checked frequently, e.g. when the likes of powerd
and system monitoring software are running.
Change the strategy to allocating a long-lived buffer for handling the
requests.

Reviewed by:	njl
MFC after:	2 weeks

END