drm/i915: Reuse the active golden render state batch

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The golden render state is constant, but we recreate the batch setting
it up for every new context. If we keep that batch in a volatile cache
we can safely reuse it whenever we need to initialise a new context. We
mark the pages as purgeable and use the shrinker to recover pages from
the batch whenever we face memory pressues, recreating that batch afresh
on the next new context.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtien@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-8-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2016-10-28 13:58:31 +01:00

parent 920cf41949

commit 4e50f082ac

6 changed files with 129 additions and 71 deletions

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188

drivers/gpu/drm/i915/i915_gem_render_state.c

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4

drivers/gpu/drm/i915/i915_gem_render_state.h

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drivers/gpu/drm/i915/intel_engine_cs.c

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drivers/gpu/drm/i915/intel_lrc.c

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drivers/gpu/drm/i915/intel_ringbuffer.c

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drivers/gpu/drm/i915/intel_ringbuffer.h

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