184b8bf6dSMasahiro Yamada #ifndef _LINUX_BUG_H 284b8bf6dSMasahiro Yamada #define _LINUX_BUG_H 384b8bf6dSMasahiro Yamada 4*046a6e2aSMasahiro Yamada #include <vsprintf.h> /* for panic() */ 5d9b1ff81SMasahiro Yamada #include <linux/build_bug.h> 6*046a6e2aSMasahiro Yamada #include <linux/compiler.h> 7*046a6e2aSMasahiro Yamada #include <linux/printk.h> 8*046a6e2aSMasahiro Yamada 9*046a6e2aSMasahiro Yamada #define BUG() do { \ 10*046a6e2aSMasahiro Yamada printk("BUG at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ 11*046a6e2aSMasahiro Yamada panic("BUG!"); \ 12*046a6e2aSMasahiro Yamada } while (0) 13*046a6e2aSMasahiro Yamada 14*046a6e2aSMasahiro Yamada #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) 15*046a6e2aSMasahiro Yamada 16*046a6e2aSMasahiro Yamada #define WARN_ON(condition) ({ \ 17*046a6e2aSMasahiro Yamada int __ret_warn_on = !!(condition); \ 18*046a6e2aSMasahiro Yamada if (unlikely(__ret_warn_on)) \ 19*046a6e2aSMasahiro Yamada printk("WARNING at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ 20*046a6e2aSMasahiro Yamada unlikely(__ret_warn_on); \ 21*046a6e2aSMasahiro Yamada }) 22*046a6e2aSMasahiro Yamada 23*046a6e2aSMasahiro Yamada #define WARN_ON_ONCE(condition) ({ \ 24*046a6e2aSMasahiro Yamada static bool __warned; \ 25*046a6e2aSMasahiro Yamada int __ret_warn_once = !!(condition); \ 26*046a6e2aSMasahiro Yamada \ 27*046a6e2aSMasahiro Yamada if (unlikely(__ret_warn_once && !__warned)) { \ 28*046a6e2aSMasahiro Yamada __warned = true; \ 29*046a6e2aSMasahiro Yamada WARN_ON(1); \ 30*046a6e2aSMasahiro Yamada } \ 31*046a6e2aSMasahiro Yamada unlikely(__ret_warn_once); \ 32*046a6e2aSMasahiro Yamada }) 3384b8bf6dSMasahiro Yamada 3484b8bf6dSMasahiro Yamada #endif /* _LINUX_BUG_H */ 35