SYNOPSIS

int i915_gem_evict_something(struct drm_device * dev, struct i915_address_space * vm, int min_size, unsigned alignment, unsigned cache_level, unsigned long start, unsigned long end, unsigned flags);

ARGUMENTS

dev

drm_device

vm

address space to evict from

min_size

size of the desired free space

alignment

alignment constraint of the desired free space

cache_level

cache_level for the desired space

start

start (inclusive) of the range from which to evict objects

end

end (exclusive) of the range from which to evict objects

flags

additional flags to control the eviction algorithm

DESCRIPTION

This function will try to evict vmas until a free space satisfying the requirements is found. Callers must check first whether any such hole exists already before calling this function.

This function is used by the object/vma binding code.

Since this function is only used to free up virtual address space it only ignores pinned vmas, and not object where the backing storage itself is pinned. Hence obj->pages_pin_count does not protect against eviction.

TO CLARIFY

This is for freeing up virtual address space, not for freeing memory in e.g. the shrinker.

AUTHORS

Jesse Barnes <[email protected]>
Intel Corporation,         
        

Initial version

Laurent Pinchart <[email protected]>
Ideas on board SPRL,         
        

Driver internals

Daniel Vetter <[email protected]>
Intel Corporation,         
        

Contributions all over the place

Lukas Wunner <[email protected]>

vga_switcheroo documentation

COPYRIGHT