tools lib: Add for_each_clear_bit macro

[sfrench/cifs-2.6.git] / tools / include / asm-generic / bitops / find.h

diff --git a/tools/include/asm-generic/bitops/find.h b/tools/include/asm-generic/bitops/find.h
index 31f51547fcd4164f54a575c93b54b43e6a2f5ce9..5538ecdc964a2f9e131b88e2e1a3709606963fba 100644 (file)
--- a/tools/include/asm-generic/bitops/find.h
+++ b/tools/include/asm-generic/bitops/find.h
@@ -15,6 +15,21 @@ extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
                size, unsigned long offset);
 #endif
 
                size, unsigned long offset);
 #endif
 

+#ifndef find_next_zero_bit
+
+/**
+ * find_next_zero_bit - find the next cleared bit in a memory region
+ * @addr: The address to base the search on
+ * @offset: The bitnumber to start searching at
+ * @size: The bitmap size in bits
+ *
+ * Returns the bit number of the next zero bit
+ * If no bits are zero, returns @size.
+ */
+unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
+                                unsigned long offset);
+#endif
+

 #ifndef find_first_bit
 
 /**
 #ifndef find_first_bit
 
 /**


@@ -30,4 +45,17 @@ extern unsigned long find_first_bit(const unsigned long *addr,
 
 #endif /* find_first_bit */
 
 
 #endif /* find_first_bit */
 

+#ifndef find_first_zero_bit
+
+/**
+ * find_first_zero_bit - find the first cleared bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum number of bits to search
+ *
+ * Returns the bit number of the first cleared bit.
+ * If no bits are zero, returns @size.
+ */
+unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size);
+#endif
+

 #endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */
 #endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */