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drm/i915: Implement pwrite without struct-mutex
authorChris Wilson <[email protected]>
Fri, 28 Oct 2016 12:58:40 +0000 (13:58 +0100)
committerChris Wilson <[email protected]>
Fri, 28 Oct 2016 19:53:48 +0000 (20:53 +0100)
commitfe115628d567ba83a1498c585604d9035842b57c
tree811b57f4682badeeca57641a2522736f3c5f1a75tree | snapshot
parentbb6dc8d96b683a6052162c36062cd8e9329e4f21commit | diff
drm/i915: Implement pwrite without struct-mutex

We only need struct_mutex within pwrite for a brief window where we need
to serialise with rendering and control our cache domains. Elsewhere we
can rely on the backing storage being pinned, and forgive userspace any
races against us.

Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Joonas Lahtinen <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
drivers/gpu/drm/i915/i915_gem.c diff | blob | blame | history
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