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drm/i915/gtt: Recursive ppgtt clear for gen8

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With an explicit level, we can refactor the separate clear functions
as a simple recursive function. The additional knowledge of the level
allows us to spot when we can free an entire subtree at once.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190712112725.2892-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-07-12 12:27:23 +01:00
parent 1eda701eac
commit 4c2be3c5eb
2 changed files with 104 additions and 64 deletions
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14
drivers/gpu/drm/i915/Kconfig.debug
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@@ -94,6 +94,20 @@ config DRM_I915_TRACE_GEM
If in doubt, say "N".
config DRM_I915_TRACE_GTT
bool "Insert extra ftrace output from the GTT internals"
depends on DRM_I915_DEBUG_GEM
select TRACING
default n
help
Enable additional and verbose debugging output that will spam
ordinary tests, but may be vital for post-mortem debugging when
used with /proc/sys/kernel/ftrace_dump_on_oops
Recommended for driver developers only.
If in doubt, say "N".
config DRM_I915_SW_FENCE_DEBUG_OBJECTS
bool "Enable additional driver debugging for fence objects"
depends on DRM_I915