include/linux/sunrpc/debug.h

   1 /*
   2  * linux/include/linux/sunrpc/debug.h
   3  *
   4  * Debugging support for sunrpc module
   5  *
   6  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
   7  */
   8 #ifndef _LINUX_SUNRPC_DEBUG_H_
   9 #define _LINUX_SUNRPC_DEBUG_H_
  10
  11 #include <uapi/linux/sunrpc/debug.h>
  12
  13 /*
  14  * Debugging macros etc
  15  */
  16 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
  17 extern unsigned int             rpc_debug;
  18 extern unsigned int             nfs_debug;
  19 extern unsigned int             nfsd_debug;
  20 extern unsigned int             nlm_debug;
  21 #endif
  22
  23 #define dprintk(fmt, ...)                                               \
  24         dfprintk(FACILITY, fmt, ##__VA_ARGS__)
  25 #define dprintk_cont(fmt, ...)                                          \
  26         dfprintk_cont(FACILITY, fmt, ##__VA_ARGS__)
  27 #define dprintk_rcu(fmt, ...)                                           \
  28         dfprintk_rcu(FACILITY, fmt, ##__VA_ARGS__)
  29 #define dprintk_rcu_cont(fmt, ...)                                      \
  30         dfprintk_rcu_cont(FACILITY, fmt, ##__VA_ARGS__)
  31
  32 #undef ifdebug
  33 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
  34 # define ifdebug(fac)           if (unlikely(rpc_debug & RPCDBG_##fac))
  35
  36 # define dfprintk(fac, fmt, ...)                                        \
  37 do {                                                                    \
  38         ifdebug(fac)                                                    \
  39                 printk(KERN_DEFAULT fmt, ##__VA_ARGS__);                \
  40 } while (0)
  41
  42 # define dfprintk_cont(fac, fmt, ...)                                   \
  43 do {                                                                    \
  44         ifdebug(fac)                                                    \
  45                 printk(KERN_CONT fmt, ##__VA_ARGS__);                   \
  46 } while (0)
  47
  48 # define dfprintk_rcu(fac, fmt, ...)                                    \
  49 do {                                                                    \
  50         ifdebug(fac) {                                                  \
  51                 rcu_read_lock();                                        \
  52                 printk(KERN_DEFAULT fmt, ##__VA_ARGS__);                \
  53                 rcu_read_unlock();                                      \
  54         }                                                               \
  55 } while (0)
  56
  57 # define dfprintk_rcu_cont(fac, fmt, ...)                               \
  58 do {                                                                    \
  59         ifdebug(fac) {                                                  \
  60                 rcu_read_lock();                                        \
  61                 printk(KERN_CONT fmt, ##__VA_ARGS__);                   \
  62                 rcu_read_unlock();                                      \
  63         }                                                               \
  64 } while (0)
  65
  66 # define RPC_IFDEBUG(x)         x
  67 #else
  68 # define ifdebug(fac)           if (0)
  69 # define dfprintk(fac, fmt, ...)        do {} while (0)
  70 # define dfprintk_cont(fac, fmt, ...)   do {} while (0)
  71 # define dfprintk_rcu(fac, fmt, ...)    do {} while (0)
  72 # define RPC_IFDEBUG(x)
  73 #endif
  74
  75 /*
  76  * Sysctl interface for RPC debugging
  77  */
  78
  79 struct rpc_clnt;
  80 struct rpc_xprt;
  81
  82 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
  83 void            rpc_register_sysctl(void);
  84 void            rpc_unregister_sysctl(void);
  85 void            sunrpc_debugfs_init(void);
  86 void            sunrpc_debugfs_exit(void);
  87 void            rpc_clnt_debugfs_register(struct rpc_clnt *);
  88 void            rpc_clnt_debugfs_unregister(struct rpc_clnt *);
  89 void            rpc_xprt_debugfs_register(struct rpc_xprt *);
  90 void            rpc_xprt_debugfs_unregister(struct rpc_xprt *);
  91 #else
  92 static inline void
  93 sunrpc_debugfs_init(void)
  94 {
  95         return;
  96 }
  97
  98 static inline void
  99 sunrpc_debugfs_exit(void)
 100 {
 101         return;
 102 }
 103
 104 static inline void
 105 rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
 106 {
 107         return;
 108 }
 109
 110 static inline void
 111 rpc_clnt_debugfs_unregister(struct rpc_clnt *clnt)
 112 {
 113         return;
 114 }
 115
 116 static inline void
 117 rpc_xprt_debugfs_register(struct rpc_xprt *xprt)
 118 {
 119         return;
 120 }
 121
 122 static inline void
 123 rpc_xprt_debugfs_unregister(struct rpc_xprt *xprt)
 124 {
 125         return;
 126 }
 127 #endif
 128
 129 #endif /* _LINUX_SUNRPC_DEBUG_H_ */