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# SPDX-License-Identifier: GPL-2.0-only
config DRM_XE_JOB_TIMEOUT_MAX
int "Hard upper limit for job timeout (ms)"
default 10000 # milliseconds
help
Absolute upper bound (in milliseconds) for the per-engine-class job
timeout. This is the maximum value that can be written to the sysfs
job_timeout_ms knob, regardless of privileges. To raise this ceiling,
increase this value and rebuild the kernel.
config DRM_XE_JOB_TIMEOUT_MIN
int "Hard lower limit for job timeout (ms)"
default 1 # milliseconds
help
Absolute lower bound (in milliseconds) for the per-engine-class job
timeout. This is the minimum value that can be written to the sysfs
job_timeout_ms knob, regardless of privileges.
Note: the job timeout default (5000 ms) is hardcoded in the driver
and is not configurable here. Use the sysfs job_timeout_ms knob at
runtime to change the engine-class default.
config DRM_XE_TIMESLICE_MAX
int "Hard upper limit for timeslice duration (us)"
default 10000000 # microseconds
help
Absolute upper bound (in microseconds) for the timeslice duration.
This caps both the sysfs timeslice_duration_us knob and the value
accepted via the DRM_XE_EXEC_QUEUE_SET_PROPERTY_TIMESLICE UAPI for
processes with CAP_SYS_NICE when DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT
is enabled.
config DRM_XE_TIMESLICE_MIN
int "Hard lower limit for timeslice duration (us)"
default 1 # microseconds
help
Absolute lower bound (in microseconds) for the timeslice duration.
This caps both the sysfs timeslice_duration_us knob and the value
accepted via the DRM_XE_EXEC_QUEUE_SET_PROPERTY_TIMESLICE UAPI for
processes with CAP_SYS_NICE when DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT
is enabled.
config DRM_XE_PREEMPT_TIMEOUT
int "Default preempt timeout (us, jiffy granularity)"
default 640000 # microseconds
help
Initial per-engine-class preemption timeout (in microseconds). This
is the value the driver programs at boot; it can be changed at
runtime via the sysfs preempt_timeout_us knob.
This is how long the driver waits for the current context to reach
an arbitration point and yield the GPU voluntarily when a
higher-priority context becomes runnable. If the context does not
yield before the timer expires, the HW is reset to allow the
higher-priority context to execute.
The range userspace may write via sysfs is bounded by
DRM_XE_PREEMPT_TIMEOUT_MIN and DRM_XE_PREEMPT_TIMEOUT_MAX.
config DRM_XE_PREEMPT_TIMEOUT_MAX
int "Hard upper limit for preempt timeout (us)"
default 10000000 # microseconds
help
Absolute upper bound (in microseconds) for the per-engine-class
preemption timeout. This is the maximum value that can be written to
the sysfs preempt_timeout_us knob, regardless of privileges.
config DRM_XE_PREEMPT_TIMEOUT_MIN
int "Hard lower limit for preempt timeout (us)"
default 1 # microseconds
help
Absolute lower bound (in microseconds) for the per-engine-class
preemption timeout. This is the minimum value that can be written to
the sysfs preempt_timeout_us knob, regardless of privileges.
config DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT
bool "Default configuration of limitation on scheduler timeout"
default y
help
Configures the enablement of limitation on scheduler timeout
to apply to applicable user. For elevated user, all above MIN
and MAX values will apply when this configuration is enable to
apply limitation. By default limitation is applied.
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