include/os/linux/spl/sys/cmn_err.h

   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 */