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[v3,0/3] drm/mm: Add an iterator to optimally walk over holes suitable for an allocation

Message ID 20220220013127.962336-1-vivek.kasireddy@intel.com (mailing list archive)
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Series drm/mm: Add an iterator to optimally walk over holes suitable for an allocation | expand

Message

Kasireddy, Vivek Feb. 20, 2022, 1:31 a.m. UTC 
The first patch is a drm core patch that replaces the for loop in
drm_mm_insert_node_in_range() with the iterator and would not
cause any functional changes. The second patch is a i915 driver
specific patch that also uses the iterator but solves a different
problem.

v2:
- Added a new patch to this series to fix a potential NULL
  dereference.
- Fixed a typo associated with the iterator introduced in the
  drm core patch.
- Added locking around the snippet in the i915 patch that
  traverses the GGTT hole nodes.

v3: (Tvrtko)
- Replaced mutex_lock with mutex_lock_interruptible_nested() in
  the i915 patch.

Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Nirmoy Das <nirmoy.das@intel.com>
Cc: Christian König <christian.koenig@amd.com>

Vivek Kasireddy (3):
  drm/mm: Ensure that the entry is not NULL before extracting rb_node
  drm/mm: Add an iterator to optimally walk over holes for an allocation
    (v4)
  drm/i915/gem: Don't try to map and fence large scanout buffers (v9)

 drivers/gpu/drm/drm_mm.c        |  37 +++++----
 drivers/gpu/drm/i915/i915_gem.c | 128 +++++++++++++++++++++++---------
 include/drm/drm_mm.h            |  36 +++++++++
 3 files changed, 148 insertions(+), 53 deletions(-)