[SRU][S][PATCH v2 0/9] Add drm/i915 PREEMPT_RT support

[Benjamin Wheeler]

BugLink: https://bugs.launchpad.net/bugs/2168432

SRU justification:

[Impact]
drm/i915 drivers need additional patches to be compatible with
PREEMPT_RT. 

[Fix]
cherry-pick the upstream drm/i915 PREEMPT_RT patches. 

[Test Plan]
Compiled and boot tested.

[Where problems could occur]
Problems or regressions could occur in the drm/i915 driver.

[Changes since v1]
- Rewrote commit titles to UBUNTU: SAUCE:

Benjamin Wheeler (1):
  UBUNTU: [debian] update master upstream-realtime

Mike Galbraith (2):
  drm/i915: Use preempt_disable/enable_rt() where recommended
  drm/i915: Don't disable interrupts on PREEMPT_RT during atomic updates

Sebastian Andrzej Siewior (6):
  drm/i915: Disable tracing points on PREEMPT_RT
  drm/i915/gt: Use spin_lock_irq() instead of local_irq_disable() +
    spin_lock()
  drm/i915: Drop the irqs_disabled() check
  drm/i915/guc: Consider also RCU depth in busy loop.
  Revert "drm/i915: Depend on !PREEMPT_RT."
  drm/i915: Consider RCU read section as atomic.

 debian.master/upstream-realtime               |  2 +-
 drivers/gpu/drm/i915/Kconfig                  |  1 -
 drivers/gpu/drm/i915/display/intel_crtc.c     |  9 ++--
 drivers/gpu/drm/i915/display/intel_cursor.c   |  9 ++--
 .../drm/i915/display/intel_display_trace.h    |  4 ++
 drivers/gpu/drm/i915/display/intel_vblank.c   | 50 ++++++++++++++-----
 drivers/gpu/drm/i915/gt/intel_engine_cs.c     |  2 +-
 .../drm/i915/gt/intel_execlists_submission.c  | 17 ++-----
 drivers/gpu/drm/i915/gt/uc/intel_guc.h        |  2 +-
 drivers/gpu/drm/i915/i915_request.c           |  2 -
 drivers/gpu/drm/i915/i915_trace.h             |  4 ++
 drivers/gpu/drm/i915/intel_uncore_trace.h     |  4 ++
 12 files changed, 70 insertions(+), 36 deletions(-)

-- 
2.43.0