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| author |   Thomas Hellstrom <thellstrom@vmware.com> | 2012-11-06 11:31:50 +0000 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2012-11-20 16:15:05 +1000 |
| commit | cdad05216c2b2edfe92a9f87d6ae51aab277f3b2 (patch) | |
| tree | 1ba899709b77745acec655d0a8eea3f08c97a885 /drivers/gpu/drm/ttm/ttm_execbuf_util.c | |
| parent | kref: Implement kref_get_unless_zero v3 (diff) | |
| download | linux-dev-cdad05216c2b2edfe92a9f87d6ae51aab277f3b2.tar.xz linux-dev-cdad05216c2b2edfe92a9f87d6ae51aab277f3b2.zip | |
drm/ttm, drm/vmwgfx: Use RCU locking for object lookups v3
The mostly used lookup+get put+potential_destroy path of TTM objects
is converted to use RCU locks. This will substantially decrease the amount
of locked bus cycles during normal operation.
Since we use kfree_rcu to free the objects, no rcu synchronization is needed
at module unload time.
v2: Don't touch include/linux/kref.h
v3: Adapt to kref_get_unless_zero return value change
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_execbuf_util.c')
0 files changed, 0 insertions, 0 deletions