radix tree test suite: add some more functionality
IDR needs more functionality from the kernel: kmalloc()/kfree(), and
xchg().
Link: http://lkml.kernel.org/r/1480369871-5271-67-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
index 23e77f5..9b43b49 100644
--- a/tools/testing/radix-tree/linux/kernel.h
+++ b/tools/testing/radix-tree/linux/kernel.h
@@ -8,6 +8,7 @@
#include <limits.h>
#include "../../include/linux/compiler.h"
+#include "../../include/linux/err.h"
#include "../../../include/linux/kconfig.h"
#ifdef BENCHMARK
@@ -58,4 +59,6 @@ static inline int in_interrupt(void)
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define round_down(x, y) ((x) & ~__round_mask(x, y))
+#define xchg(ptr, x) uatomic_xchg(ptr, x)
+
#endif /* _KERNEL_H */