kvm tools: add WARN_ON()

like the WARN_ON() of kernel code.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/tools/kvm/include/kvm/util.h b/tools/kvm/include/kvm/util.h
index 6c8d4bc1ccc087f83c9ccfeb455ab35155172bfd..cfa3d9057b41addd44f1b446abae490eacb5bc4e 100644 (file)
--- a/tools/kvm/include/kvm/util.h
+++ b/tools/kvm/include/kvm/util.h
@@ -62,6 +62,15 @@ do {                                                         \
                __stringify(cnd) "\n");                         \
 } while (0)
 
+#define WARN_ON(condition) ({                                  \
+       int __ret_warn_on = !!(condition);                      \
+       if (__ret_warn_on)                                      \
+               pr_warning("(%s) %s:%d: failed condition: %s",  \
+                               __FILE__, __func__, __LINE__,   \
+                               __stringify(condition));        \
+       __ret_warn_on;                                          \
+})
+
 #define MSECS_TO_USECS(s) ((s) * 1000)
 
 /* Millisecond sleep */