Searched hist:db3d8338bacbfc734d246eaccfbe5b19ad81d7d4 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/gpu/drm/i915/gt/ |
| H A D | sysfs_engines.c | diff db3d8338bacbfc734d246eaccfbe5b19ad81d7d4 Fri Feb 28 07:17:15 CST 2020 Chris Wilson <chris@chris-wilson.co.uk> drm/i915/gt: Expose preempt reset timeout via sysfs
After initialising a preemption request, we give the current resident a
small amount of time to vacate the GPU. The preemption request is for a
higher priority context and should be immediate to maintain high
quality of service (and avoid priority inversion). However, the
preemption granularity of the GPU can be quite coarse and so we need a
compromise.
The preempt timeout can be adjusted per-engine using,
/sys/class/drm/card?/engine/*/preempt_timeout_ms
and can be disabled by setting it to 0.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Steve Carbonari <steven.carbonari@intel.com>
Tested-by: Steve Carbonari <steven.carbonari@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200228131716.3243616-6-chris@chris-wilson.co.uk
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| /openbmc/linux/drivers/gpu/drm/i915/ |
| H A D | Kconfig.profile | diff db3d8338bacbfc734d246eaccfbe5b19ad81d7d4 Fri Feb 28 07:17:15 CST 2020 Chris Wilson <chris@chris-wilson.co.uk> drm/i915/gt: Expose preempt reset timeout via sysfs
After initialising a preemption request, we give the current resident a
small amount of time to vacate the GPU. The preemption request is for a
higher priority context and should be immediate to maintain high
quality of service (and avoid priority inversion). However, the
preemption granularity of the GPU can be quite coarse and so we need a
compromise.
The preempt timeout can be adjusted per-engine using,
/sys/class/drm/card?/engine/*/preempt_timeout_ms
and can be disabled by setting it to 0.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Steve Carbonari <steven.carbonari@intel.com>
Tested-by: Steve Carbonari <steven.carbonari@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200228131716.3243616-6-chris@chris-wilson.co.uk
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