Maarten Lankhorst 3c3b177a93 reservation: add suppport for read-only access using rcu ...

This adds some extra functions to deal with rcu.

reservation_object_get_fences_rcu() will obtain the list of shared
and exclusive fences without obtaining the ww_mutex.

reservation_object_wait_timeout_rcu() will wait on all fences of the
reservation_object, without obtaining the ww_mutex.

reservation_object_test_signaled_rcu() will test if all fences of the
reservation_object are signaled without using the ww_mutex.

reservation_object_get_excl and reservation_object_get_list require
the reservation object to be held, updating requires
write_seqcount_begin/end. If only the exclusive fence is needed,
rcu_dereference followed by fence_get_rcu can be used, if the shared
fences are needed it's recommended to use the supplied functions.

Signed-off-by: Maarten Lankhorst <[email protected]>
Acked-by: Sumit Semwal <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Reviewed-By: Thomas Hellstrom <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

2014-07-08 13:41:08 -07:00

..

dma-buf.c

reservation: add suppport for read-only access using rcu

2014-07-08 13:41:08 -07:00

fence.c

reservation: add suppport for read-only access using rcu

2014-07-08 13:41:08 -07:00

Makefile

seqno-fence: Hardware dma-buf implementation of fencing (v6)

2014-07-08 12:50:59 -07:00

reservation.c

reservation: add suppport for read-only access using rcu

2014-07-08 13:41:08 -07:00

seqno-fence.c

seqno-fence: Hardware dma-buf implementation of fencing (v6)

2014-07-08 12:50:59 -07:00