btrfs-progs: kerncompat: add separate trace print for BUG_ON

We want to pass unmodified condition down to the handlers so we can't
use assert_trace for that purpose.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/kerncompat.h b/kerncompat.h
index b4070da..94d815f 100644 (file)
--- a/kerncompat.h
+++ b/kerncompat.h
@@ -106,6 +106,20 @@ static inline void warning_trace(const char *assertion, const char *filename,
 #endif
 }
 
+static inline void bugon_trace(const char *assertion, const char *filename,
+                             const char *func, unsigned line, long val)
+{
+       if (!val)
+               return;
+       fprintf(stderr,
+               "%s:%d: %s: BUG_ON `%s` triggered, value %ld\n",
+               filename, line, func, assertion, val);
+#ifndef BTRFS_DISABLE_BACKTRACE
+       print_trace();
+#endif
+       abort();
+       exit(1);
+}
 
 #ifdef __CHECKER__
 #define __force    __attribute__((force))
@@ -292,12 +306,11 @@ static inline void assert_trace(const char *assertion, const char *filename,
        exit(1);
 }
 #define        ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (long)!(c))
-#define BUG_ON(c) assert_trace(#c, __FILE__, __func__, __LINE__, (long)(c))
 #else
 #define ASSERT(c) assert(c)
-#define BUG_ON(c) ASSERT(!(c))
 #endif
 
+#define BUG_ON(c) bugon_trace(#c, __FILE__, __func__, __LINE__, (long)(c))
 #define BUG() BUG_ON(1)
 #define WARN_ON(c) warning_trace(#c, __FILE__, __func__, __LINE__, (long)(c))