drm/i915/gem: Take a copy of the engines for context_barrier_task

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When applying the context-barrier, we only care about the current
engines, as the next set of engines will be naturally after the barrier.
So we can skip holding the ctx->engines_mutex while constructing the
request by taking a sneaky reference to the i915_gem_engines instead.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200311221739.30375-2-chris@chris-wilson.co.uk

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Chris Wilson 2020-03-11 22:17:39 +00:00

parent c02aac25f1

commit 70c96e3978

1 changed files with 77 additions and 37 deletions

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drivers/gpu/drm/i915/gem/i915_gem_context.c

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