Messages in this thread | | | From | Michał Winiarski <> | Subject | [PATCH v6 0/4] drm: Use full allocated minor range for DRM | Date | Mon, 24 Jul 2023 23:14:24 +0200 |
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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 (force_extended_minors) which causes DRM to skip allocating minors in 0-192 range. Additionally - convert minors to use XArray instead of IDR to simplify the locking.
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)
v3 -> v4: Convert from IDR to XArray (Matthew Wilcox)
v4 -> v5: Fixup IDR to XArray conversion (Matthew Wilcox)
v5 -> v6: Also convert Accel to XArray Rename skip_legacy_minors to force_extended_minors
Michał Winiarski (4): drm: Use XArray instead of IDR for minors accel: Use XArray instead of IDR for minors drm: Expand max DRM device number to full MINORBITS drm: Introduce force_extended_minors modparam
drivers/accel/drm_accel.c | 110 +++------------------------------ drivers/gpu/drm/drm_drv.c | 105 ++++++++++++++++--------------- drivers/gpu/drm/drm_file.c | 2 +- drivers/gpu/drm/drm_internal.h | 4 -- include/drm/drm_accel.h | 18 +----- include/drm/drm_file.h | 5 ++ 6 files changed, 69 insertions(+), 175 deletions(-)
-- 2.41.0
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