CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND: Runtime autosuspend delay for userspace GGTT mmaps (ms)

General informations

The Linux kernel configuration item CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND:

• prompt: Runtime autosuspend delay for userspace GGTT mmaps (ms)
• type: int
• depends on: (none)
• defined in drivers/gpu/drm/i915/Kconfig.profile
• found in Linux kernels: 5.3–5.19, 6.0–6.13, 6.14-rc+HEAD

Help text

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.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

Automatic links from Google (and ads)

Custom Search

Popular queries: