From 2f6d7bb93c157b874efb79a2d1583a4c368bf89a Mon Sep 17 00:00:00 2001 From: Sirshak Das Date: Wed, 3 Oct 2018 22:53:51 +0000 Subject: 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 Signed-off-by: Sirshak Das Reviewed-by: Honnappa Nagarahalli Reviewed-by: Ola Liljedahl Reviewed-by: Steve Capper --- src/vnet/devices/virtio/vhost_user_output.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/vnet/devices') 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 -- cgit 1.2.3-korg