mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 15:59:33 +07:00
07bcfd1291
Allow super long OpenCL workloads which cannot be preempted within the default timeout to run out of the box. v2: * Make it stick out more and apply only to RCS. (Chris) v3: * Mention platform override in kconfig. (Joonas) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Michal Mrozek <michal.mrozek@intel.com> Cc: <stable@vger.kernel.org> # v5.6+ Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Michal Mrozek <Michal.mrozek@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200312115748.29970-1-tvrtko.ursulin@linux.intel.com
96 lines
3.7 KiB
Plaintext
96 lines
3.7 KiB
Plaintext
config DRM_I915_USERFAULT_AUTOSUSPEND
|
|
int "Runtime autosuspend delay for userspace GGTT mmaps (ms)"
|
|
default 250 # milliseconds
|
|
help
|
|
On runtime suspend, as we suspend the device, we have to revoke
|
|
userspace GGTT mmaps and force userspace to take a pagefault on
|
|
their next access. The revocation and subsequent recreation of
|
|
the GGTT mmap can be very slow and so we impose a small hysteris
|
|
that complements the runtime-pm autosuspend and provides a lower
|
|
floor on the autosuspend delay.
|
|
|
|
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.
|
|
|
|
This is adjustable via
|
|
/sys/class/drm/card?/engine/*/heartbeat_interval_ms
|
|
|
|
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 640 # milliseconds
|
|
help
|
|
How long to wait (in milliseconds) for a preemption event to occur
|
|
when submitting a new context via execlists. If the current context
|
|
does not hit an arbitration point and yield to HW before the timer
|
|
expires, the HW will be reset to allow the more important context
|
|
to execute.
|
|
|
|
This is adjustable via
|
|
/sys/class/drm/card?/engine/*/preempt_timeout_ms
|
|
|
|
May be 0 to disable the timeout.
|
|
|
|
The compiled in default may get overridden at driver probe time on
|
|
certain platforms and certain engines which will be reflected in the
|
|
sysfs control.
|
|
|
|
config DRM_I915_MAX_REQUEST_BUSYWAIT
|
|
int "Busywait for request completion limit (ns)"
|
|
default 8000 # nanoseconds
|
|
help
|
|
Before sleeping waiting for a request (GPU operation) to complete,
|
|
we may spend some time polling for its completion. As the IRQ may
|
|
take a non-negligible time to setup, we do a short spin first to
|
|
check if the request will complete in the time it would have taken
|
|
us to enable the interrupt.
|
|
|
|
This is adjustable via
|
|
/sys/class/drm/card?/engine/*/max_busywait_duration_ns
|
|
|
|
May be 0 to disable the initial spin. In practice, we estimate
|
|
the cost of enabling the interrupt (if currently disabled) to be
|
|
a few microseconds.
|
|
|
|
config DRM_I915_STOP_TIMEOUT
|
|
int "How long to wait for an engine to quiesce gracefully before reset (ms)"
|
|
default 100 # milliseconds
|
|
help
|
|
By stopping submission and sleeping for a short time before resetting
|
|
the GPU, we allow the innocent contexts also on the system to quiesce.
|
|
It is then less likely for a hanging context to cause collateral
|
|
damage as the system is reset in order to recover. The corollary is
|
|
that the reset itself may take longer and so be more disruptive to
|
|
interactive or low latency workloads.
|
|
|
|
This is adjustable via
|
|
/sys/class/drm/card?/engine/*/stop_timeout_ms
|
|
|
|
config DRM_I915_TIMESLICE_DURATION
|
|
int "Scheduling quantum for userspace batches (ms, jiffy granularity)"
|
|
default 1 # milliseconds
|
|
help
|
|
When two user batches of equal priority are executing, we will
|
|
alternate execution of each batch to ensure forward progress of
|
|
all users. This is necessary in some cases where there may be
|
|
an implicit dependency between those batches that requires
|
|
concurrent execution in order for them to proceed, e.g. they
|
|
interact with each other via userspace semaphores. Each context
|
|
is scheduled for execution for the timeslice duration, before
|
|
switching to the next context.
|
|
|
|
This is adjustable via
|
|
/sys/class/drm/card?/engine/*/timeslice_duration_ms
|
|
|
|
May be 0 to disable timeslicing.
|