/*
   *   Copyright (c) 2010 Wang Lei
   *   Author(s): Wang Lei (wang840925@gmail.com). All Rights Reserved.
   *
   *   Internal DNS Rsolver stuff
   *
   *   This library is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU Lesser General Public License as published
   *   by the Free Software Foundation; either version 2.1 of the License, or
   *   (at your option) any later version.
   *
   *   This library is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
   *   the GNU Lesser General Public License for more details.
   *
   *   You should have received a copy of the GNU Lesser General Public License
   *   along with this library; if not, see <http://www.gnu.org/licenses/>.
   */
  
  #include <linux/compiler.h>
  #include <linux/kernel.h>
  #include <linux/sched.h>
  
  /*
   * dns_key.c
   */
  extern const struct cred *dns_resolver_cache;
  
  /*
   * debug tracing
   */
  extern unsigned int dns_resolver_debug;
  
  #define	kdebug(FMT, ...)				\
  do {							\
  	if (unlikely(dns_resolver_debug))		\
  		printk(KERN_DEBUG "[%-6.6s] "FMT"
  ",	\
  		       current->comm, ##__VA_ARGS__);	\
  } while (0)
  
  #define kenter(FMT, ...) kdebug("==> %s("FMT")", __func__, ##__VA_ARGS__)
  #define kleave(FMT, ...) kdebug("<== %s()"FMT"", __func__, ##__VA_ARGS__)