[Bug 81858] [BYT/BDW/BSW Regression]igt/pm_rps some subcases fail and cause " [drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning!"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81858

--- Comment #4 from Guo Jinxian <jinxianx.guo at intel.com> ---
This failure is able to reproduce while run tests below:
igt/gem_partial_pwrite_pread/reads-snoop
igt/gem_partial_pwrite_pread/write-snoop
igt/gem_partial_pwrite_pread/writes-after-reads-snoop
igt/gem_pread_after_blit/interruptible-snoop
igt/gem_pread_after_blit/normal-snoop

root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_partial_pwrite_pread --run-subtest reads-snoop
IGT-Version: 1.8-g107151c (x86_64) (Linux:
3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ x86_64)
checking partial reads
Test assertion failure function intel_batchbuffer_flush_on_ring, file
intel_batchbuffer.c:180:
Failed assertion: (drm_intel_gem_bo_context_exec(batch->bo, ctx, used, ring))
== 0
Last errno: 22, Invalid argument
Subtest reads-snoop: FAIL (0.248s)
root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_pread_after_blit --run-subtest interruptible-snoop
IGT-Version: 1.8-g107151c (x86_64) (Linux:
3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ x86_64)
Test assertion failure function intel_batchbuffer_flush_on_ring, file
intel_batchbuffer.c:180:
Failed assertion: (drm_intel_gem_bo_context_exec(batch->bo, ctx, used, ring))
== 0
Last errno: 22, Invalid argument
Subtest interruptible-snoop: FAIL (0.002s)

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