Messages in this thread Patch in this message | | | From | Igor Stoppa <> | Subject | [PATCH] virtio: add unlikely() to WARN_ON_ONCE() | Date | Fri, 7 Sep 2018 20:48:02 +0300 |
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The condition to test is unlikely() to be true. Add the hint.
Signed-off-by: Igor Stoppa <igor.stoppa@huawei.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Virtualization@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org --- tools/virtio/linux/kernel.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h index fb22bccfbc8a..2b5e417ea2f0 100644 --- a/tools/virtio/linux/kernel.h +++ b/tools/virtio/linux/kernel.h @@ -123,7 +123,7 @@ static inline void free_page(unsigned long addr) #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) -#define WARN_ON_ONCE(cond) ((cond) ? fprintf (stderr, "WARNING\n") : 0) +#define WARN_ON_ONCE(cond) (unlikely(cond) ? fprintf (stderr, "WARNING\n") : 0) #define min(x, y) ({ \ typeof(x) _min1 = (x); \ -- 2.17.1
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