bitops: Add for_each_bit helper

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

bitops: Add for_each_bit helper
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
aa53547a · Cyrill Gorcunov · Pavel Emelyanov · c5083e47 · aa53547a
Commit aa53547a authored Nov 26, 2012 by Cyrill Gorcunov Committed by Pavel Emelyanov Nov 26, 2012
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bitops.h include/bitops.h +5 -0

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--- a/include/bitops.h
+++ b/include/bitops.h
@@ -106,6 +106,11 @@ found_middle:
 	return result + __ffs(tmp);
 }

+#define for_each_bit(i, bitmask)				\
+	for (i = find_next_bit(bitmask, sizeof(bitmask), 0);	\
+	     i < sizeof(bitmask);				\
+	     i = find_next_bit(bitmask, sizeof(bitmask), i + 1))
+
 #else /* CONFIG_X86_64 */
 # error x86-32 is not implemented yet
 #endif /* CONFIG_X86_64 */