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| author | Chris Wilson | 2016-08-09 10:23:33 +0200 |
|---|---|---|
| committer | Chris Wilson | 2016-08-09 11:17:26 +0200 |
| commit | edf6b76f64a2f62b81ed796fe2ce6dd664351d64 (patch) | |
| tree | fe8f513eb432134916eb2be6df52fd5dc077fdb5 /drivers/gpu/drm/i915/i915_gem_request.c | |
| parent | drm/i915: Don't check for idleness before retiring after a GPU hang (diff) | |
| download | kernel-qcow2-linux-edf6b76f64a2f62b81ed796fe2ce6dd664351d64.tar.gz kernel-qcow2-linux-edf6b76f64a2f62b81ed796fe2ce6dd664351d64.tar.xz kernel-qcow2-linux-edf6b76f64a2f62b81ed796fe2ce6dd664351d64.zip | |
drm/i915: Add smp_rmb() to busy ioctl's RCU dance
In the debate as to whether the second read of active->request is
ordered after the dependent reads of the first read of active->request,
just give in and throw a smp_rmb() in there so that ordering of loads is
assured.
v2: Explain the manual smp_rmb()
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1470731014-6894-1-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_request.c')
0 files changed, 0 insertions, 0 deletions