From: Gregory Greenman <gregory.greenman@xxxxxxxxx> Signed-off-by: Gregory Greenman <gregory.greenman@xxxxxxxxx> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> --- backport/backport-include/linux/kernel.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 backport/backport-include/linux/kernel.h diff --git a/backport/backport-include/linux/kernel.h b/backport/backport-include/linux/kernel.h new file mode 100644 index 000000000000..b59971fbc1f0 --- /dev/null +++ b/backport/backport-include/linux/kernel.h @@ -0,0 +1,17 @@ +#ifndef __BACKPORT_KERNEL_H +#define __BACKPORT_KERNEL_H +#include_next <linux/kernel.h> +#include <linux/version.h> + +#if LINUX_VERSION_IS_LESS(4,17,0) +/* + * This returns a constant expression while determining if an argument is + * a constant expression, most importantly without evaluating the argument. + * Glory to Martin Uecker <Martin.Uecker@xxxxxxxxxxxxxxxxxxxxx> + */ +#define __is_constexpr(x) \ + (sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8))) + +#endif /* < 4.17.0 */ + +#endif /* __BACKPORT_KERNEL_H */ -- 2.45.1
