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authorIngo Molnar <mingo@elte.hu>2012-03-14 07:44:11 +0100
committerIngo Molnar <mingo@elte.hu>2012-03-14 07:44:11 +0100
commitcd593accdcc27ccbe6498d9ad1c2b6cc8e1d830d (patch)
tree9424d3ac86e753706cc6c3d7e6072d2a73711e29 /include/linux/bitops.h
parent11b91d6fe7272452c999573bab33c15c2f03dc31 (diff)
parentfde7d9049e55ab85a390be7f415d74c9f62dd0f9 (diff)
Merge tag 'v3.3-rc7' into x86/mce
Merge reason: Update from an ancient -rc1 base to an almost-final stable kernel. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/bitops.h')
-rw-r--r--include/linux/bitops.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 3c1063acb2ab..94300fe46cce 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -56,6 +56,26 @@ static inline unsigned long hweight_long(unsigned long w)
}
/**
+ * rol64 - rotate a 64-bit value left
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u64 rol64(__u64 word, unsigned int shift)
+{
+ return (word << shift) | (word >> (64 - shift));
+}
+
+/**
+ * ror64 - rotate a 64-bit value right
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u64 ror64(__u64 word, unsigned int shift)
+{
+ return (word >> shift) | (word << (64 - shift));
+}
+
+/**
* rol32 - rotate a 32-bit value left
* @word: value to rotate
* @shift: bits to roll