kvm tool: Introduce own BUG_ON handler

Raise SIGABRT in case if run-time crtitical
problem found.

Proposed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.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 cfa3d9057b41addd44f1b446abae490eacb5bc4e..dabf544c6d0c376256d47f276c044a985b91eee0 100644 (file)
--- a/tools/kvm/include/kvm/util.h
+++ b/tools/kvm/include/kvm/util.h
@@ -9,7 +9,6 @@
  * Some bits are stolen from perf tool :)
  */
 
-#include <assert.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <stddef.h>
@@ -17,6 +16,7 @@
 #include <stdarg.h>
 #include <string.h>
 #include <stdbool.h>
+#include <signal.h>
 #include <errno.h>
 #include <limits.h>
 #include <sys/param.h>
@@ -51,9 +51,20 @@ extern void set_die_routine(void (*routine)(const char *err, va_list params) NOR
                                __func__, __LINE__, ##__VA_ARGS__);     \
        } while (0)
 
-#
+
 #define BUILD_BUG_ON(condition)        ((void)sizeof(char[1 - 2*!!(condition)]))
-#define BUG_ON(condition)      assert(!(condition))
+
+#ifndef BUG_ON_HANDLER
+# define BUG_ON_HANDLER(condition)                                     \
+       do {                                                            \
+               if ((condition)) {                                      \
+                       pr_err("BUG at %s:%d", __FILE__, __LINE__);     \
+                       raise(SIGABRT);                                 \
+               }                                                       \
+       } while (0)
+#endif
+
+#define BUG_ON(condition)      BUG_ON_HANDLER((condition))
 
 #define DIE_IF(cnd)                                            \
 do {                                                           \