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drm/i915/perf: Add preemption check while waiting for OA 

While we're waiting for the OA configuration to apply, let's give a
chance to other contexts that might need to run other workloads.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114140224.21818-1-lionel.g.landwerlin@intel.com
This commit is contained in:
Lionel Landwerlin 2019-11-14 16:02:24 +02:00 committed by Chris Wilson
parent dea397e818
commit dd590f6800
1 changed files with 2 additions and 0 deletions
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drivers/gpu/drm/i915/i915_perf.c
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@ -1777,6 +1777,8 @@ static int alloc_noa_wait(struct i915_perf_stream *stream)
*cs++ = MI_MATH_ADD;
*cs++ = MI_MATH_STOREINV(MI_MATH_REG(JUMP_PREDICATE), MI_MATH_REG_CF);
*cs++ = MI_ARB_CHECK;
/*
* Transfer the result into the predicate register to be used for the
* predicated jump.