[Intel-gfx] [PATCH 29/36] drm/i915: Replace hangcheck by heartbeats

[Bloomfield, Jon]

> -----Original Message-----
> From: Chris Wilson <chris at chris-wilson.co.uk>
> Sent: Thursday, August 29, 2019 1:12 AM
> To: intel-gfx at lists.freedesktop.org
> Cc: Chris Wilson <chris at chris-wilson.co.uk>; Joonas Lahtinen
> <joonas.lahtinen at linux.intel.com>; Ursulin, Tvrtko <tvrtko.ursulin at intel.com>;
> Bloomfield, Jon <jon.bloomfield at intel.com>
> Subject: [PATCH 29/36] drm/i915: Replace hangcheck by heartbeats
> 
> Replace sampling the engine state every so often with a periodic
> heartbeat request to measure the health of an engine. This is coupled
> with the forced-preemption to allow long running requests to survive so
> long as they do not block other users.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: Jon Bloomfield <jon.bloomfield at intel.com>
> ---
Reviewed-by: Jon Bloomfield <jon.bloomfield at intel.com>