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authorStephen Rothwell <sfr@canb.auug.org.au>2019-10-31 16:55:10 +1100
committerStephen Rothwell <sfr@canb.auug.org.au>2019-10-31 16:55:10 +1100
commitcc9ab103ea566547124232cf03525834f06a9e55 (patch)
tree2bcadccb69998fec25678309b6826ff349a9d4e2 /include/asm-generic/bitops/find.h
parentcbf83a411543bc3296abee873842ee8ff2a3e6b7 (diff)
parent528ab4a96af0b31981f362addec1913a376dacbc (diff)
Merge branch 'akpm/master'
Diffstat (limited to 'include/asm-generic/bitops/find.h')
-rw-r--r--include/asm-generic/bitops/find.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h
index 8a1ee10014de..9fdf21302fdf 100644
--- a/include/asm-generic/bitops/find.h
+++ b/include/asm-generic/bitops/find.h
@@ -80,4 +80,21 @@ extern unsigned long find_first_zero_bit(const unsigned long *addr,
#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */
+/**
+ * find_next_clump8 - find next 8-bit clump with set bits in a memory region
+ * @clump: location to store copy of found clump
+ * @addr: address to base the search on
+ * @size: bitmap size in number of bits
+ * @offset: bit offset at which to start searching
+ *
+ * Returns the bit offset for the next set clump; the found clump value is
+ * copied to the location pointed by @clump. If no bits are set, returns @size.
+ */
+extern unsigned long find_next_clump8(unsigned long *clump,
+ const unsigned long *addr,
+ unsigned long size, unsigned long offset);
+
+#define find_first_clump8(clump, bits, size) \
+ find_next_clump8((clump), (bits), (size), 0)
+
#endif /*_ASM_GENERIC_BITOPS_FIND_H_ */