tools/libxl: Introduce ROUNDUP()

This is the same as is used by libxc.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
CC: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 5235d2593d2dcbf9c96781487e295864d6e15c50..19fc4256683c19eb15194a2235c2cf8bb1fe6b38 100644 (file)
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -110,6 +110,9 @@
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
 
+#define ROUNDUP(_val, _order)                                           \
+    (((unsigned long)(_val)+(1UL<<(_order))-1) & ~((1UL<<(_order))-1))
+
 #define min(X, Y) ({                             \
             const typeof (X) _x = (X);           \
             const typeof (Y) _y = (Y);           \