1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _TOOLS_ASM_BUG_H 3*4882a593Smuzhiyun #define _TOOLS_ASM_BUG_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/compiler.h> 6*4882a593Smuzhiyun #include <stdio.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #define __WARN_printf(arg...) do { fprintf(stderr, arg); } while (0) 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define WARN(condition, format...) ({ \ 11*4882a593Smuzhiyun int __ret_warn_on = !!(condition); \ 12*4882a593Smuzhiyun if (unlikely(__ret_warn_on)) \ 13*4882a593Smuzhiyun __WARN_printf(format); \ 14*4882a593Smuzhiyun unlikely(__ret_warn_on); \ 15*4882a593Smuzhiyun }) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #define WARN_ON(condition) ({ \ 18*4882a593Smuzhiyun int __ret_warn_on = !!(condition); \ 19*4882a593Smuzhiyun if (unlikely(__ret_warn_on)) \ 20*4882a593Smuzhiyun __WARN_printf("assertion failed at %s:%d\n", \ 21*4882a593Smuzhiyun __FILE__, __LINE__); \ 22*4882a593Smuzhiyun unlikely(__ret_warn_on); \ 23*4882a593Smuzhiyun }) 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define WARN_ON_ONCE(condition) ({ \ 26*4882a593Smuzhiyun static int __warned; \ 27*4882a593Smuzhiyun int __ret_warn_once = !!(condition); \ 28*4882a593Smuzhiyun \ 29*4882a593Smuzhiyun if (unlikely(__ret_warn_once && !__warned)) { \ 30*4882a593Smuzhiyun __warned = true; \ 31*4882a593Smuzhiyun WARN_ON(1); \ 32*4882a593Smuzhiyun } \ 33*4882a593Smuzhiyun unlikely(__ret_warn_once); \ 34*4882a593Smuzhiyun }) 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #define WARN_ONCE(condition, format...) ({ \ 37*4882a593Smuzhiyun static int __warned; \ 38*4882a593Smuzhiyun int __ret_warn_once = !!(condition); \ 39*4882a593Smuzhiyun \ 40*4882a593Smuzhiyun if (unlikely(__ret_warn_once)) \ 41*4882a593Smuzhiyun if (WARN(!__warned, format)) \ 42*4882a593Smuzhiyun __warned = 1; \ 43*4882a593Smuzhiyun unlikely(__ret_warn_once); \ 44*4882a593Smuzhiyun }) 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun #endif /* _TOOLS_ASM_BUG_H */ 47