diff mbox series

[v5,07/23] xen/asm-generic: introduce generic hweight64()

Message ID 15dde1f7c5157321998b5518238b247a27d9fec4.1708962629.git.oleksii.kurochko@gmail.com (mailing list archive)
State Superseded
Headers show
Series Enable build of full Xen for RISC-V | expand

Commit Message

Oleksii Kurochko Feb. 26, 2024, 5:38 p.m. UTC 
The generic hweight() function can be useful for architectures
that don't have corresponding arch-specific instructions.

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
---
 Changes in V5:
   - new patch
---
 xen/include/asm-generic/bitops/hweight.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 xen/include/asm-generic/bitops/hweight.h
diff mbox series

Patch

diff --git a/xen/include/asm-generic/bitops/hweight.h b/xen/include/asm-generic/bitops/hweight.h
new file mode 100644
index 0000000000..0d7577054e
--- /dev/null
+++ b/xen/include/asm-generic/bitops/hweight.h
@@ -0,0 +1,13 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_GENERIC_BITOPS_HWEIGHT_H_
+#define _ASM_GENERIC_BITOPS_HWEIGHT_H_
+
+/*
+ * hweightN - returns the hamming weight of a N-bit word
+ * @x: the word to weigh
+ *
+ * The Hamming Weight of a number is the total number of bits set in it.
+ */
+#define hweight64(x) generic_hweight64(x)
+
+#endif /* _ASM_GENERIC_BITOPS_HWEIGHT_H_ */