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-rw-r--r--backport-include/linux/string.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/backport-include/linux/string.h b/backport-include/linux/string.h
new file mode 100644
index 0000000..819d141
--- /dev/null
+++ b/backport-include/linux/string.h
@@ -0,0 +1,11 @@
+#ifndef __BACKPORT_LINUX_STRING_H
+#define __BACKPORT_LINUX_STRING_H
+#include_next <linux/string.h>
+#include <linux/version.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,6,0))
+#define memweight LINUX_BACKPORT(memweight)
+extern size_t memweight(const void *ptr, size_t bytes);
+#endif
+
+#endif /* __BACKPORT_LINUX_STRING_H */