drm/i915/buddy: track available visible size

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Track the total amount of available visible memory, and also track
per-resource the amount of used visible memory. For now this is useful
for our debug output, and deciding if it is even worth calling into the
buddy allocator. In the future tracking the per-resource visible usage
will be useful for when deciding if we should attempt to evict certain
buffers.

v2:
 - s/place->lpfn/lpfn/, that way we can avoid scanning the list if the
   entire range is already mappable.
 - Move the end declaration inside the if block(Thomas).
 - Make sure to also account for reserved memory.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220225145502.331818-4-matthew.auld@intel.com

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This commit is contained in:

Matthew Auld 2022-02-25 14:54:59 +00:00

parent 30b9d1b3ef

commit 26ffcbbef7

3 changed files with 75 additions and 2 deletions

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68

drivers/gpu/drm/i915/i915_ttm_buddy_manager.c

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8

drivers/gpu/drm/i915/i915_ttm_buddy_manager.h

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1

drivers/gpu/drm/i915/intel_region_ttm.c

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