1 /* 2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. 3 * Copyright (C) 2007 The Regents of the University of California. 4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). 5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>. 6 * UCRL-CODE-235197 7 * 8 * This file is part of the SPL, Solaris Porting Layer. 9 * 10 * The SPL is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 * The SPL is distributed in the hope that it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 18 * for more details. 19 * 20 * You should have received a copy of the GNU General Public License along 21 * with the SPL. If not, see <http://www.gnu.org/licenses/>. 22 */ 23 24 #ifndef _SPL_CMN_ERR_H 25 #define _SPL_CMN_ERR_H 26 27 #if defined(_KERNEL) && defined(HAVE_STANDALONE_LINUX_STDARG) 28 #include <linux/stdarg.h> 29 #else 30 #include <stdarg.h> 31 #endif 32 #include <sys/atomic.h> 33 34 #define CE_CONT 0 /* continuation */ 35 #define CE_NOTE 1 /* notice */ 36 #define CE_WARN 2 /* warning */ 37 #define CE_PANIC 3 /* panic */ 38 #define CE_IGNORE 4 /* print nothing */ 39 40 extern void cmn_err(int, const char *, ...) 41 __attribute__((format(printf, 2, 3))); 42 extern void vcmn_err(int, const char *, va_list) 43 __attribute__((format(printf, 2, 0))); 44 extern void vpanic(const char *, va_list) 45 __attribute__((format(printf, 1, 0), __noreturn__)); 46 47 #define fm_panic panic 48 49 #define cmn_err_once(ce, ...) \ 50 do { \ 51 static volatile uint32_t printed = 0; \ 52 if (atomic_cas_32(&printed, 0, 1) == 0) { \ 53 cmn_err(ce, __VA_ARGS__); \ 54 } \ 55 } while (0) 56 57 #define vcmn_err_once(ce, fmt, ap) \ 58 do { \ 59 static volatile uint32_t printed = 0; \ 60 if (atomic_cas_32(&printed, 0, 1) == 0) { \ 61 vcmn_err(ce, fmt, ap); \ 62 } \ 63 } while (0) 64 65 #endif /* SPL_CMN_ERR_H */ 66