diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-20 19:37:05 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-20 21:52:30 +0100 |
| commit | b32fa811156328aea5a3c2ff05cc096490382456 (patch) | |
| tree | a6a7b7bb4f1417439e6d1cb2833b892d3fe35b55 /drivers/gpu/drm/i915/selftests | |
| parent | 683d672c425aa29c0e74583ed28a0e011cc0bb43 (diff) | |
drm/i915/gtt: Defer address space cleanup to an RCU worker
Enable RCU protection of i915_address_space and its ppgtt superclasses,
and defer its cleanup into a worker executed after an RCU grace period.
In the future we will be able to use the RCU protection to reduce the
locking around VM lookups, but the immediate benefit is being able to
defer the release into a kworker (process context). This is required as
we may need to sleep to reap the WC pages stashed away inside the ppgtt.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110934
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190620183705.31006-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/selftests')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c index 1a60b9fe8221..0c47276ed5df 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c @@ -208,9 +208,7 @@ static int igt_ppgtt_alloc(void *arg) } err_ppgtt_cleanup: - mutex_lock(&dev_priv->drm.struct_mutex); i915_vm_put(&ppgtt->vm); - mutex_unlock(&dev_priv->drm.struct_mutex); return err; } |