From 61d0b5a4b2777dcf5daef245e212b3c1fa8091ca Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 18 Mar 2013 13:22:19 +1030 Subject: tools/virtio: separate headers more. This makes them a bit more like the kernel headers, so we can include more real kernel headers in our tests. In addition this means that we don't break tools/virtio with the next patch. Signed-off-by: Rusty Russell --- tools/virtio/asm/barrier.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 tools/virtio/asm/barrier.h (limited to 'tools/virtio/asm') diff --git a/tools/virtio/asm/barrier.h b/tools/virtio/asm/barrier.h new file mode 100644 index 000000000000..aff61e13306c --- /dev/null +++ b/tools/virtio/asm/barrier.h @@ -0,0 +1,14 @@ +#if defined(__i386__) || defined(__x86_64__) +#define barrier() asm volatile("" ::: "memory") +#define mb() __sync_synchronize() + +#define smp_mb() mb() +# define smp_rmb() barrier() +# define smp_wmb() barrier() +/* Weak barriers should be used. If not - it's a bug */ +# define rmb() abort() +# define wmb() abort() +#else +#error Please fill in barrier macros +#endif + -- cgit v1.2.3