diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-05-27 12:51:14 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-05-28 08:23:09 +0100 |
| commit | b27e35ae5b1804078cfd177082429eea9de01885 (patch) | |
| tree | dbed55ae5948ebd895a12e01921dd01253942934 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | c457d9cf256e942138a54a2e80349ee7fe20c391 (diff) | |
drm/i915: Keep user GGTT alive for a minimum of 250ms
Do not allow runtime pm autosuspend to remove userspace GGTT mmaps too
quickly. For example, igt sets the autosuspend delay to 0, and so we
immediately attempt to perform runtime suspend upon releasing the
wakeref. Unfortunately, that involves tearing down GGTT mmaps as they
require an active device.
Override the autosuspend for GGTT mmaps, by keeping the wakeref around
for 250ms after populating the PTE for a fresh mmap.
v2: Prefer refcount_t for its under/overflow error detection
v3: Flush the user runtime autosuspend prior to system system.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190527115114.13448-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 764347e7cf2d..87cc80c7b626 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -875,6 +875,9 @@ struct i915_gem_mm { */ struct list_head userfault_list; + /* Manual runtime pm autosuspend delay for user GGTT mmaps */ + struct intel_wakeref_auto userfault_wakeref; + /** * List of objects which are pending destruction. */ |