i915/gem_exec_schedule: Trim reorder-wide workload

A future change will cause the scheduling to only take into account
relative priorities and not apply strict priority ordering. To keep
reorder-wide working we need to ensure that the seperation in priority
levels is sufficient such that a ring full of the high priority work
will have an earlier deadline than the first low priority request.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
29 jobs for master in 14 minutes and 46 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build Containers
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build-containers:build-debian

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  Build
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build:tests-debian-autotools

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build:tests-debian-meson

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build:tests-debian-meson-arm64

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build:tests-debian-meson-armhf

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build:tests-debian-meson-mips

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build:tests-debian-minimal

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build:tests-fedora

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build:tests-fedora-clang

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build:tests-fedora-no-libunwind

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build:tests-fedora-oldest-meson

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  Test
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test:list-undocumented-tests

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test:ninja-test

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test:ninja-test-armhf

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test:ninja-test-clang

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test:ninja-test-minimal

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test:ninja-test-mips

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test:test-list-diff

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test:verify-blacklists

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test:ninja-test

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test:ninja-test-arm64

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test:ninja-test-minimal

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  Containers
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containers:igt

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  Deploy
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