Red Hat Enterprise MRG RT enhancement update

Updated packages that add enhancements are now available for Red Hat
Enterprise MRG 1.1.

This update is for the following packages:

* Tuna provides graphical and command line interfaces for changing
scheduler and IRQ settings. Changes can be made to CPUs, by thread or at
the IRQ level, taking into account the topology of multi-socket and
multi-core systems. Tuna gives the ability to isolate CPU cores and sockets
for use by a specific application or hardware device. The graphical
interface allows operations to be achieved by dragging and dropping.

* The python-linux-procfs package enables the extraction of information
from the /proc file system.

* The python-schedutils packages provides an interface to the scheduler.

* rt-tests is a set of programs that test and measure various components of
real-time kernel behavior. Measures include timer latency, signal latency
and the functioning of priority-inheritance mutexes.

This update adds the following enhancements:

* The python-linux-procfs 0.4.2 introduces per process flags constants and
routines, lazy parsing of /proc file contents using python dictionaries and
a "find_by_user_regex" method to the "interrupts" class. These new
features speed up certain operations used by the new tuna (0.8.4) package.
(BZ#481313)

* The python-schedutils 0.2 package adds some constants for
SCHED_{BATCH,FIFO,OTHER,RR} that were in the tuna package. It also adds two
new utilities - pchrt and ptaskset - that are equivalents to the chrt and
taskset utilities present in the util-linux package, to test the
functionality provided by this package. (BZ#481315)

* The tuna 0.8.4 package allows specifying irqs and processes by
name; globbing for processes and irq names; adding and removing irqs
and threads. (BZ#481316)

* Cyclictest and signaltest needed to be run as root in order to be able to
change the scheduler policy and lock memory. This has been changed and they
can now be run as an unprivileged user. (BZ#474224)

Users of the Realtime capabilities of Red Hat Enterprise MRG 1.1 are
advised to upgrade to these updated packages.

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

474224 - remove root requirement for cyclictest/signaltest
481313 - python-linux-procfs: update to 0.4.2
481315 - python-schedutils: update to 0.2
481316 - tuna: update to 0.8.4

http://www.redhat.com/security/updates/classification/#none