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authorChris Wilson <chris@chris-wilson.co.uk>2019-10-23 16:31:08 +0300
committerChris Wilson <chris@chris-wilson.co.uk>2019-10-24 01:52:10 +0300
commit058179e72e0956a2dfe4927db6cbe5fbfb2406aa (patch)
treec187567f6a2c286a45d28f88189313df6856ce31 /drivers/gpu/drm/i915/Kconfig.profile
parent2e0986a58cc4f2e7f9e7ede19ec32b9c116d0068 (diff)
downloadlinux-058179e72e0956a2dfe4927db6cbe5fbfb2406aa.tar.xz
drm/i915/gt: 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@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Jon Bloomfield <jon.bloomfield@intel.com> Reviewed-by: Jon Bloomfield <jon.bloomfield@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191023133108.21401-5-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/Kconfig.profile')
-rw-r--r--drivers/gpu/drm/i915/Kconfig.profile11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/Kconfig.profile b/drivers/gpu/drm/i915/Kconfig.profile
index b071b6024152..8ab7af5eb311 100644
--- a/drivers/gpu/drm/i915/Kconfig.profile
+++ b/drivers/gpu/drm/i915/Kconfig.profile
@@ -12,6 +12,17 @@ config DRM_I915_USERFAULT_AUTOSUSPEND
May be 0 to disable the extra delay and solely use the device level
runtime pm autosuspend delay tunable.
+config DRM_I915_HEARTBEAT_INTERVAL
+ int "Interval between heartbeat pulses (ms)"
+ default 2500 # milliseconds
+ help
+ The driver sends a periodic heartbeat down all active engines to
+ check the health of the GPU and undertake regular house-keeping of
+ internal driver state.
+
+ May be 0 to disable heartbeats and therefore disable automatic GPU
+ hang detection.
+
config DRM_I915_PREEMPT_TIMEOUT
int "Preempt timeout (ms, jiffy granularity)"
default 100 # milliseconds