linux-toradex.git/drivers/gpu/drm/ttm/ttm_object.c, branch v3.15

drm/ttm: Add a ttm_ref_object_exists function

2014-03-28T13:19:03+00:00

A function to be used to check whether a caller has put a ref object
(opened) a struct ttm_base_object

Signed-off-by: Thomas Hellstrom 
Reviewed-by: Brian Paul

drm/ttm: Fix TTM object open regression

2014-02-05T08:29:25+00:00

Commit drm/ttm: ttm object security fixes for render nodes introduced a
regression where, if a TTM object was opened multiple times from the same
open file, the caller would spin uninterruptibly in the kernel.

Fix this.

Signed-off-by: Thomas Hellstrom 
Reviewed-by: Jakob Bornecrantz

drm/ttm: ttm object security fixes for render nodes

2014-01-08T09:11:57+00:00

When a client looks up a ttm object, don't look it up through the device hash
table, but rather from the file hash table. That makes sure that the client
has indeed put a reference on the object, or in gem terms, has opened
the object; either using prime or using the global "name".

To avoid a performance loss, make sure the file hash table entries can be
looked up from under an RCU lock, and as a consequence, replace the rwlock
with a spinlock, since we never need to take it in read mode only anymore.

Finally add a ttm object lookup function for the device hash table, that is
intended to be used when we put a ref object on a base object or, in  gem terms,
when we open the object.

Signed-off-by: Thomas Hellstrom 
Reviewed-by: Brian Paul

drm/ttm: Add a minimal prime implementation for ttm base objects

2013-11-18T08:46:41+00:00

Signed-off-by: Thomas Hellstrom 
Reviewed-by: Jakob Bornecrantz

drm, ttm Fix uninitialized warning

2013-09-19T01:51:51+00:00

Fix uninitialized warning.

drivers/gpu/drm/ttm/ttm_object.c: In function ‘ttm_base_object_lookup’:
drivers/gpu/drm/ttm/ttm_object.c:213:10: error: ‘base’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  kref_put(&base->refcount, ttm_release_base);
          ^
drivers/gpu/drm/ttm/ttm_object.c:221:26: note: ‘base’ was declared here
  struct ttm_base_object *base;

Signed-off-by: Prarit Bhargava 
Reviewed-by: Rob Clark 
Reviewed-by: David Herrmann 
Signed-off-by: Dave Airlie

drm/ttm: Use the hashtab _rcu interface for ttm_objects

2012-11-28T08:36:15+00:00

Also move a kref_init() out of spinlocked region

Signed-off-by: Thomas Hellstrom 
Signed-off-by: Dave Airlie

drm/ttm: Fix locking in an error path

2012-11-28T08:36:14+00:00

Signed-off-by: Thomas Hellstrom 
Signed-off-by: Dave Airlie

drm/ttm, drm/vmwgfx: Use RCU locking for object lookups v3

2012-11-20T06:15:05+00:00

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 
Signed-off-by: Dave Airlie

UAPI: (Scripted) Convert #include "..." to #include in drivers/gpu/

2012-10-02T17:01:07+00:00

Convert #include "..." to #include  in drivers/gpu/.

Signed-off-by: David Howells 
Acked-by: Dave Airlie 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones

drm/ttm: Use pr_fmt and pr_

2012-03-20T08:45:35+00:00

Use the more current logging style.

Add pr_fmt and remove the TTM_PFX uses.
Coalesce formats and align arguments.

Signed-off-by: Joe Perches 
Signed-off-by: Dave Airlie