Move __GENMASK and __GENMASK_ULL from include/ to include/uapi/ so that they can
be used to define masks in userspace API headers. Compared to what is already
in include/linux/bits.h, the definitions need to use the uglified versions of
UL(), ULL(), BITS_PER_LONG and BITS_PER_LONG_LONG (which did not even exist),
but otherwise expand to the same content.
Signed-off-by: Paolo Bonzini <[email protected]>
---
include/linux/bits.h | 8 +-------
include/uapi/asm-generic/bitsperlong.h | 4 ++++
include/uapi/linux/bits.h | 15 +++++++++++++++
3 files changed, 20 insertions(+), 7 deletions(-)
create mode 100644 include/uapi/linux/bits.h
diff --git a/include/linux/bits.h b/include/linux/bits.h
index 7c0cf5031abe..0eb24d21aac2 100644
--- a/include/linux/bits.h
+++ b/include/linux/bits.h
@@ -4,6 +4,7 @@
#include <linux/const.h>
#include <vdso/bits.h>
+#include <uapi/linux/bits.h>
#include <asm/bitsperlong.h>
#define BIT_MASK(nr) (UL(1) << ((nr) % BITS_PER_LONG))
@@ -30,15 +31,8 @@
#define GENMASK_INPUT_CHECK(h, l) 0
#endif
-#define __GENMASK(h, l) \
- (((~UL(0)) - (UL(1) << (l)) + 1) & \
- (~UL(0) >> (BITS_PER_LONG - 1 - (h))))
#define GENMASK(h, l) \
(GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
-
-#define __GENMASK_ULL(h, l) \
- (((~ULL(0)) - (ULL(1) << (l)) + 1) & \
- (~ULL(0) >> (BITS_PER_LONG_LONG - 1 - (h))))
#define GENMASK_ULL(h, l) \
(GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l))
diff --git a/include/uapi/asm-generic/bitsperlong.h b/include/uapi/asm-generic/bitsperlong.h
index 352cb81947b8..fadb3f857f28 100644
--- a/include/uapi/asm-generic/bitsperlong.h
+++ b/include/uapi/asm-generic/bitsperlong.h
@@ -24,4 +24,8 @@
#endif
#endif
+#ifndef __BITS_PER_LONG_LONG
+#define __BITS_PER_LONG_LONG 64
+#endif
+
#endif /* _UAPI__ASM_GENERIC_BITS_PER_LONG */
diff --git a/include/uapi/linux/bits.h b/include/uapi/linux/bits.h
new file mode 100644
index 000000000000..3c2a101986a3
--- /dev/null
+++ b/include/uapi/linux/bits.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* bits.h: Macros for dealing with bitmasks. */
+
+#ifndef _UAPI_LINUX_BITS_H
+#define _UAPI_LINUX_BITS_H
+
+#define __GENMASK(h, l) \
+ (((~_UL(0)) - (_UL(1) << (l)) + 1) & \
+ (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
+
+#define __GENMASK_ULL(h, l) \
+ (((~_ULL(0)) - (_ULL(1) << (l)) + 1) & \
+ (~_ULL(0) >> (__BITS_PER_LONG_LONG - 1 - (h))))
+
+#endif /* _UAPI_LINUX_BITS_H */
--
2.39.0