>>> On 24.05.18 at 02:46, <[email protected]> wrote:
> Port WARN_ON_ONCE macro from Linux.
In such a case you should justify adjustments you've made:
> --- a/xen/include/xen/lib.h
> +++ b/xen/include/xen/lib.h
> @@ -11,6 +11,19 @@
> #define BUG_ON(p) do { if (unlikely(p)) BUG(); } while (0)
> #define WARN_ON(p) do { if (unlikely(p)) WARN(); } while (0)
>
> +#define WARN_ON_ONCE(p) \
> +({ \
> + static bool __section(".data.unlikely") warned; \
Linux uses .data.once. That or .data.cold would seem better to me than
.data.unlikely.
Jan
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