Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Dan Williams <dan.j.williams@intel.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Dan Williams <dan.j.williams@intel.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Dan Williams <dan.j.williams@intel.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Nicolas Pitre <nico@fluxnic.net>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Scott Branden <sbranden@broadcom.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Mike Rapoport <mike@compulab.co.il>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (39 commits)
  i915/gtt: fix ordering causing DMAR errors on object teardown.
  i915/gtt: fix ordering issues with status setup and DMAR
  drm/i915/execbuffer: Reorder binding of objects to favour restrictions
  drm/i915: If we hit OOM when allocating GTT pages, clear the aperture
  drm/i915/evict: Ensure we completely cleanup on failure
  drm/i915/execbuffer: Correctly clear the current object list upon EFAULT
  drm/i915/debugfs: Show all objects in the gtt
  drm/i915: Record AGP memory type upon error
  drm/i915: Periodically flush the active lists and requests
  drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT
  drm/i915: Record the error batchbuffer on each ring
  drm/i915: Include TLB miss overhead for computing WM
  drm/i915: Propagate error from flushing the ring
  drm/i915: detect & report PCH display error interrupts
  drm/i915: cleanup rc6 code
  drm/i915: fix rc6 enabling around suspend/resume
  drm/i915: re-enable rc6 support for Ironlake+
  drm/i915: Make the ring IMR handling private
  drm/i915/ringbuffer: Simplify the ring irq refcounting
  drm/i915/debugfs: Show the per-ring IMR
  ...

* 'tools' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
  tools: create power/x86/x86_energy_perf_policy
  tools: create power/x86/turbostat

* git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest: (30 commits)
  ktest: Ask for the manditory config options instead of just failing
  ktest: Copy the last good and bad configs in config_bisect
  ktest: For grub reboot, use run_ssh instead of run_command
  ktest: Added force stop after success and failure
  ktest: Parse off the directory name in useconfig for failures
  ktest: Use different temp config name for minconfig
  ktest: Updated the sample.conf for the latest options
  ktest: Added compare script to test ktest.pl to sample.conf
  ktest: Added config_bisect test type
  ktest/cleanups: Added version 0.2, ssh as options
  ktest: Output something easy to parse for failure or success
  ktest: Allow a test case to undefine a default value
  ktest: Use $output_config instead of typing $outputdir/.config
  ktest: Write to stdout if no log file is given
  ktest: Use oldnoconfig instead of yes command
  ktest: Update the sample config file with more documentation
  ktest: New TEST_START instead of using [], and use real SHA1s
  ktest: Add poweroff after halt and powercycle after reboot
  ktest: Add POST_INSTALL to allow initrds to be created
  ktest: Added sample.conf, new %default option format
  ...

* 'stable/xenbus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/xenbus: making backend support modular is too complex
  xen/pci: Make xen-pcifront be dependent on XEN_XENBUS_FRONTEND
  xen/xenbus: fixup checkpatch issues in xenbus_probe*
  xen/netfront: select XEN_XENBUS_FRONTEND
  xen/xenbus: clean up noise in xenbus_probe_frontend.c
  xen/xenbus: clean up noise in xenbus_probe_backend.c
  xen/xenbus: clean up noise in xenbus_probe.c
  xen/xenbus: cleanup debug noise in xenbus_comms.c
  xen/xenbus: clean up error handling
  xen/xenbus: make frontend bus GPL
  xen/xenbus: make sure backend bus is registered earlier
  xenbus/frontend: register bus earlier
  xen: remove xen/evtchn.h
  xen: add backend driver support
  xen: separate out frontend xenbus

Fix writev() to not keep writing the first segment over and over again
instead of moving onto subsequent segments and update the NTFS entry in
MAINTAINERS to reflect that Tuxera Inc. now supports the NTFS driver.
Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MSR_IA32_ENERGY_PERF_BIAS first became available on Westmere Xeon.
It is implemented in all Sandy Bridge processors -- mobile, desktop and server.
It is expected to become increasingly important in subsequent generations.

x86_energy_perf_policy is a user-space utility to set the
hardware energy vs performance policy hint in the processor.
Most systems would benefit from "x86_energy_perf_policy normal"
at system startup, as the hardware default is maximum performance
at the expense of energy efficiency.

See x86_energy_perf_policy.8 man page for more information.

Background:

Linux-2.6.36 added "epb" to /proc/cpuinfo to indicate
if an x86 processor supports MSR_IA32_ENERGY_PERF_BIAS,
without actually modifying the MSR.

In March, 2010, Venkatesh Pallipadi proposed a small driver
that programmed MSR_IA32_ENERGY_PERF_BIAS, based on
the cpufreq governor in use.  It also offered
a boot-time cmdline option to override.
http://lkml.org/lkml/2010/3/4/457
But hiding the hardware policy behind the
governor choice was deemed "kinda icky".

In June, 2010, I proposed a generic user/kernel API to
generalize the power/performance policy trade-off.
"RFC: /sys/power/policy_preference"
http://lkml.org/lkml/2010/6/16/399
That is my preference for implementing this capability,
but I received no support on the list.

So in September, 2010, I sent x86_energy_perf_policy.c to LKML,
a user-space utility that scribbles directly to the MSR.
http://lkml.org/lkml/2010/9/28/246

Here is that same utility, after responding to some review feedback,
to live in tools/power/, where it is easily found.
Signed-off-by: Len Brown <len.brown@intel.com>

turbostat is a Linux tool to observe proper operation
of Intel(R) Turbo Boost Technology.

turbostat displays the actual processor frequency
on x86 processors that include APERF and MPERF MSRs.

Note that turbostat is of limited utility on Linux
kernels 2.6.29 and older, as acpi_cpufreq cleared
APERF/MPERF up through that release.

On Intel Core i3/i5/i7 (Nehalem) and newer processors,
turbostat also displays residency in idle power saving states,
which are necessary for diagnosing any cpuidle issues
that may have an effect on turbo-mode.

See the turbostat.8 man page for example usage.
Signed-off-by: Len Brown <len.brown@intel.com>

Previous to the last GTT rework we always rewrote the GTT then unmapped the
object, somehow this got reversed in the rework in 2.6.37-rc5 timeframe.

This fix needs to go to stable in an alternate form since the code changed.

This fixes DMAR reports on my Ironlake HP2540p.
Signed-off-by: Dave Airlie <airlied@redhat.com>

This code was setting up the status page before setting the DMAR-is-on-bit,
so we were getting DMAR errors on the status page. Reverse the two bits
of init code to the correct result.
Signed-off-by: Dave Airlie <airlied@redhat.com>