diff options
| author |   Sirshak Das <sirshak.das@arm.com> | 2018-10-03 22:53:51 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2018-10-19 07:10:47 +0000 |
| commit | 2f6d7bb93c157b874efb79a2d1583a4c368bf89a (patch) | |
| tree | 05dc2867c598cbb8d711f074b4b0eb62dd464f41 /src/vnet/devices | |
| parent | bf3443b0f852f5a4c551d12f926defbd047f2161 (diff) | |
vppinfra: add atomic macros for __sync builtins
This is first part of addition of atomic macros with only macros for
__sync builtins.
- Based on earlier patch by Damjan (https://gerrit.fd.io/r/#/c/10729/)
Additionally
- clib_atomic_release macro added and used in the absence
of any memory barrier.
- clib_atomic_bool_cmp_and_swap added
Change-Id: Ie4e48c1e184a652018d1d0d87c4be80ddd180a3b
Original-patch-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Sirshak Das <sirshak.das@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Diffstat (limited to 'src/vnet/devices')
| -rw-r--r-- | src/vnet/devices/virtio/vhost_user_output.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_output.c b/src/vnet/devices/virtio/vhost_user_output.c index c77cdb6a2ee..dab8fa5fb3b 100644 --- a/src/vnet/devices/virtio/vhost_user_output.c +++ b/src/vnet/devices/virtio/vhost_user_output.c @@ -122,7 +122,7 @@ vhost_user_name_renumber (vnet_hw_interface_t * hi, u32 new_dev_instance) static_always_inline int vhost_user_vring_try_lock (vhost_user_intf_t * vui, u32 qid) { - return __sync_lock_test_and_set (vui->vring_locks[qid], 1); + return clib_atomic_test_and_set (vui->vring_locks[qid]); } /** @@ -141,7 +141,7 @@ vhost_user_vring_lock (vhost_user_intf_t * vui, u32 qid) static_always_inline void vhost_user_vring_unlock (vhost_user_intf_t * vui, u32 qid) { - *vui->vring_locks[qid] = 0; + clib_atomic_release (vui->vring_locks[qid]); } static_always_inline void |