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author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-28 01:02:18 +0000 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-28 09:30:08 +0000 |
commit | ad4062da1397e32a942191c61de3eabe1fb3664f (patch) | |
tree | 4297bac567d5300aa7b887aa9da1846dbaa12232 /drivers/gpu/drm/i915/intel_tv.c | |
parent | drm/i915: Disable -Wuninitialized (diff) | |
download | linux-dev-ad4062da1397e32a942191c61de3eabe1fb3664f.tar.xz linux-dev-ad4062da1397e32a942191c61de3eabe1fb3664f.zip |
drm/i915: Wait for a moment before forcibly resetting the device
During igt, we ask to reset the device if any requests are still
outstanding at the end of a test, as this quickly kills off any
erroneous hanging request streams that may escape a test. However, since
it may take the device a few milliseconds to flush itself after the end
of a normal test, *cough* guc *cough*, we may accidentally tell the
device to reset itself after it idles. If we wait a moment, our usual
I915_IDLE_ENGINES_TIMEOUT of 200ms (seems a bit high, but still better
than umpteen hangchecks!), we can differentiate better between a stuck
engine and a healthy one, and so avoid prematurely forcing the reset and
any extra complications that may entail.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190128010245.20148-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_tv.c')
0 files changed, 0 insertions, 0 deletions