LXR linux/include/linux/sunrpc/debug.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * linux/include/linux/sunrpc/debug.h
   4 *
   5 * Debugging support for sunrpc module
   6 *
   7 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
   8 */
   9#ifndef _LINUX_SUNRPC_DEBUG_H_
  10#define _LINUX_SUNRPC_DEBUG_H_
  11
  12#include <uapi/linux/sunrpc/debug.h>
  13
  14/*
  15 * Debugging macros etc
  16 */
  17#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
  18extern unsigned int             rpc_debug;
  19extern unsigned int             nfs_debug;
  20extern unsigned int             nfsd_debug;
  21extern unsigned int             nlm_debug;
  22#endif
  23
  24#define dprintk(fmt, ...)                                               \
  25        dfprintk(FACILITY, fmt, ##__VA_ARGS__)
  26#define dprintk_cont(fmt, ...)                                          \
  27        dfprintk_cont(FACILITY, fmt, ##__VA_ARGS__)
  28#define dprintk_rcu(fmt, ...)                                           \
  29        dfprintk_rcu(FACILITY, fmt, ##__VA_ARGS__)
  30#define dprintk_rcu_cont(fmt, ...)                                      \
  31        dfprintk_rcu_cont(FACILITY, fmt, ##__VA_ARGS__)
  32
  33#undef ifdebug
  34#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
  35# define ifdebug(fac)           if (unlikely(rpc_debug & RPCDBG_##fac))
  36
  37# define dfprintk(fac, fmt, ...)                                        \
  38do {                                                                    \
  39        ifdebug(fac)                                                    \
  40                printk(KERN_DEFAULT fmt, ##__VA_ARGS__);                \
  41} while (0)
  42
  43# define dfprintk_cont(fac, fmt, ...)                                   \
  44do {                                                                    \
  45        ifdebug(fac)                                                    \
  46                printk(KERN_CONT fmt, ##__VA_ARGS__);                   \
  47} while (0)
  48
  49# define dfprintk_rcu(fac, fmt, ...)                                    \
  50do {                                                                    \
  51        ifdebug(fac) {                                                  \
  52                rcu_read_lock();                                        \
  53                printk(KERN_DEFAULT fmt, ##__VA_ARGS__);                \
  54                rcu_read_unlock();                                      \
  55        }                                                               \
  56} while (0)
  57
  58# define dfprintk_rcu_cont(fac, fmt, ...)                               \
  59do {                                                                    \
  60        ifdebug(fac) {                                                  \
  61                rcu_read_lock();                                        \
  62                printk(KERN_CONT fmt, ##__VA_ARGS__);                   \
  63                rcu_read_unlock();                                      \
  64        }                                                               \
  65} while (0)
  66
  67# define RPC_IFDEBUG(x)         x
  68#else
  69# define ifdebug(fac)           if (0)
  70# define dfprintk(fac, fmt, ...)        do {} while (0)
  71# define dfprintk_cont(fac, fmt, ...)   do {} while (0)
  72# define dfprintk_rcu(fac, fmt, ...)    do {} while (0)
  73# define RPC_IFDEBUG(x)
  74#endif
  75
  76/*
  77 * Sysctl interface for RPC debugging
  78 */
  79
  80struct rpc_clnt;
  81struct rpc_xprt;
  82
  83#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
  84void            rpc_register_sysctl(void);
  85void            rpc_unregister_sysctl(void);
  86void            sunrpc_debugfs_init(void);
  87void            sunrpc_debugfs_exit(void);
  88void            rpc_clnt_debugfs_register(struct rpc_clnt *);
  89void            rpc_clnt_debugfs_unregister(struct rpc_clnt *);
  90void            rpc_xprt_debugfs_register(struct rpc_xprt *);
  91void            rpc_xprt_debugfs_unregister(struct rpc_xprt *);
  92#else
  93static inline void
  94sunrpc_debugfs_init(void)
  95{
  96        return;
  97}
  98
  99static inline void
 100sunrpc_debugfs_exit(void)
 101{
 102        return;
 103}
 104
 105static inline void
 106rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
 107{
 108        return;
 109}
 110
 111static inline void
 112rpc_clnt_debugfs_unregister(struct rpc_clnt *clnt)
 113{
 114        return;
 115}
 116
 117static inline void
 118rpc_xprt_debugfs_register(struct rpc_xprt *xprt)
 119{
 120        return;
 121}
 122
 123static inline void
 124rpc_xprt_debugfs_unregister(struct rpc_xprt *xprt)
 125{
 126        return;
 127}
 128#endif
 129
 130#endif /* _LINUX_SUNRPC_DEBUG_H_ */
 131