184b8bf6dSMasahiro Yamada #ifndef _LINUX_BUG_H 284b8bf6dSMasahiro Yamada #define _LINUX_BUG_H 384b8bf6dSMasahiro Yamada 4046a6e2aSMasahiro Yamada #include <vsprintf.h> /* for panic() */ 5d9b1ff81SMasahiro Yamada #include <linux/build_bug.h> 6046a6e2aSMasahiro Yamada #include <linux/compiler.h> 7046a6e2aSMasahiro Yamada #include <linux/printk.h> 8046a6e2aSMasahiro Yamada 9046a6e2aSMasahiro Yamada #define BUG() do { \ 10046a6e2aSMasahiro Yamada printk("BUG at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ 11046a6e2aSMasahiro Yamada panic("BUG!"); \ 12046a6e2aSMasahiro Yamada } while (0) 13046a6e2aSMasahiro Yamada 14046a6e2aSMasahiro Yamada #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) 15046a6e2aSMasahiro Yamada 16046a6e2aSMasahiro Yamada #define WARN_ON(condition) ({ \ 17046a6e2aSMasahiro Yamada int __ret_warn_on = !!(condition); \ 18046a6e2aSMasahiro Yamada if (unlikely(__ret_warn_on)) \ 19046a6e2aSMasahiro Yamada printk("WARNING at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ 20046a6e2aSMasahiro Yamada unlikely(__ret_warn_on); \ 21046a6e2aSMasahiro Yamada }) 22046a6e2aSMasahiro Yamada 23*f7f4c6d7SRamon Fried #define WARN(condition, format...) ({ \ 24*f7f4c6d7SRamon Fried int __ret_warn_on = !!(condition); \ 25*f7f4c6d7SRamon Fried if (unlikely(__ret_warn_on)) \ 26*f7f4c6d7SRamon Fried printf(format); \ 27*f7f4c6d7SRamon Fried unlikely(__ret_warn_on); \ 28*f7f4c6d7SRamon Fried }) 29*f7f4c6d7SRamon Fried 30046a6e2aSMasahiro Yamada #define WARN_ON_ONCE(condition) ({ \ 31046a6e2aSMasahiro Yamada static bool __warned; \ 32046a6e2aSMasahiro Yamada int __ret_warn_once = !!(condition); \ 33046a6e2aSMasahiro Yamada \ 34046a6e2aSMasahiro Yamada if (unlikely(__ret_warn_once && !__warned)) { \ 35046a6e2aSMasahiro Yamada __warned = true; \ 36046a6e2aSMasahiro Yamada WARN_ON(1); \ 37046a6e2aSMasahiro Yamada } \ 38046a6e2aSMasahiro Yamada unlikely(__ret_warn_once); \ 39046a6e2aSMasahiro Yamada }) 4084b8bf6dSMasahiro Yamada 41*f7f4c6d7SRamon Fried #define WARN_ONCE(condition, format...) ({ \ 42*f7f4c6d7SRamon Fried static bool __warned; \ 43*f7f4c6d7SRamon Fried int __ret_warn_once = !!(condition); \ 44*f7f4c6d7SRamon Fried \ 45*f7f4c6d7SRamon Fried if (unlikely(__ret_warn_once && !__warned)) { \ 46*f7f4c6d7SRamon Fried __warned = true; \ 47*f7f4c6d7SRamon Fried WARN(1, format); \ 48*f7f4c6d7SRamon Fried } \ 49*f7f4c6d7SRamon Fried unlikely(__ret_warn_once); \ 50*f7f4c6d7SRamon Fried }) 51*f7f4c6d7SRamon Fried 5284b8bf6dSMasahiro Yamada #endif /* _LINUX_BUG_H */ 53