1 /* 2 * Copyright (c) 2016 François Tigeot 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _ASM_BUG_H_ 28 #define _ASM_BUG_H_ 29 30 #define _WARN_STR(x) #x 31 32 #define WARN_ON(condition) ({ \ 33 int __ret = !!(condition); \ 34 if (__ret) \ 35 kprintf("WARNING %s failed at %s:%d\n", \ 36 _WARN_STR(condition), __FILE__, __LINE__); \ 37 unlikely(__ret); \ 38 }) 39 40 #define WARN_ON_ONCE(condition) ({ \ 41 static int __warned; \ 42 int __ret = !!(condition); \ 43 if (__ret && !__warned) { \ 44 kprintf("WARNING %s failed at %s:%d\n", \ 45 _WARN_STR(condition), __FILE__, __LINE__); \ 46 __warned = 1; \ 47 } \ 48 unlikely(__ret); \ 49 }) 50 51 #define WARN_ON_SMP(condition) WARN_ON(condition) 52 53 #endif /* _ASM_BUG_H_ */ 54