[PATCH v3 0/4] drm: Use full allocated minor range for DRM

[Michał Winiarski]

64 DRM device nodes is not enough for everyone.
Upgrade it to ~512K (which definitely is more than enough).

To allow testing userspace support for >64 devices, add additional DRM
modparam (skip_legacy_minors) which causes DRM to skip allocating minors
in 0-192 range.
Additionally - one minor tweak around minor DRM IDR locking and IDR lockdep
annotations.

v1 -> v2:
Don't touch DRM_MINOR_CONTROL and its range (Simon Ser)

v2 -> v3:
Don't use legacy scheme for >=192 minor range (Dave Airlie)
Add modparam for testing (Dave Airlie)
Add lockdep annotation for IDR (Daniel Vetter)

Michał Winiarski (4):
  drm: Expand max DRM device number to full MINORBITS
  drm: Introduce skip_legacy_minors modparam
  drm: Use mutex for minors
  idr: Add might_alloc() annotation

 drivers/gpu/drm/drm_drv.c | 55 ++++++++++++++++++++++-----------------
 lib/radix-tree.c          |  3 +++
 2 files changed, 34 insertions(+), 24 deletions(-)

-- 
2.37.3