[Bug 112169] [regression] (recoverable) GPU resets & fails in slower 3D benchmarks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112169

--- Comment #12 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Chris Wilson from comment #11)
> My apologies, I was referring to the kernel build config helper as currently
> the control knob (CONFIG_DRM_I915_PREEMPT_TIMEOUT) is only configurable at
> build time.

Just adding this to config:
CONFIG_DRM_I915_PREEMPT_TIMEOUT=250

wasn't enough.  After olddefconfig, values had reverted to:
CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND=250
CONFIG_DRM_I915_HEARTBEAT_INTERVAL=2500
CONFIG_DRM_I915_PREEMPT_TIMEOUT=100
CONFIG_DRM_I915_STOP_TIMEOUT=100

What else is needed to get new preempt timeout through olddefconfig?

(olddefconfig is what our build machinery uses for kernel build, I can't change
that.)

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