[Intel-gfx] [PATCH 0/7] FBC (+stolen) locking, v4

[Paulo Zanoni]

From: Paulo Zanoni <paulo.r.zanoni at intel.com>

Hi

So, based on the reviews, here's v4 of the series, now with
dev_priv->mm.stolen_lock. This allows us to completely get rid of struct_mutex
locking around FBC calls. Kudos to Chris for the suggestion.

The patch that added intel_fbc_stop() got removed from this series because the
addition of mm.stolen_lock turned it into just an optimization instead of a
bugfix. Let's leave it to another series, where I'll also try to clarify all the
function names involved.

Since we didn't seem to reach any conclusions on the lockdep_assert_held vs
WARN_ON discussion, I kept using WARN_ON since it's what the maintainer is
asking and since it's what's winning in usage count. If we decide to change it,
we can always do it in a later patch.

Thanks,
Paulo

Paulo Zanoni (7):
  drm/i915: add simple wrappers for stolen node insertion/removal
  drm/i915: move FBC code out of i915_gem_stolen.c
  drm/i915: add dev_priv->mm.stolen_lock
  drm/i915: add the FBC mutex
  drm/i915: intel_frontbuffer_flip_prepare() doesn't need struct_mutex
  drm/i915: intel_unregister_dsm_handler() doesn't need struct_mutex
  drm/i915: FBC doesn't need struct_mutex anymore

 drivers/gpu/drm/i915/i915_debugfs.c    |   8 +-
 drivers/gpu/drm/i915/i915_dma.c        |   1 +
 drivers/gpu/drm/i915/i915_drv.h        |  14 +-
 drivers/gpu/drm/i915/i915_gem_stolen.c | 215 +++++++++--------------------
 drivers/gpu/drm/i915/intel_display.c   |  20 +--
 drivers/gpu/drm/i915/intel_drv.h       |   2 +
 drivers/gpu/drm/i915/intel_fbc.c       | 239 ++++++++++++++++++++++++++++++---
 7 files changed, 309 insertions(+), 190 deletions(-)

-- 
2.1.4