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)
17extern unsigned int		rpc_debug;
18extern unsigned int		nfs_debug;
19extern unsigned int		nfsd_debug;
20extern unsigned int		nlm_debug;
21#endif
22
23#define dprintk(args...)	dfprintk(FACILITY, ## args)
24#define dprintk_rcu(args...)	dfprintk_rcu(FACILITY, ## args)
25
26#undef ifdebug
27#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
28# define ifdebug(fac)		if (unlikely(rpc_debug & RPCDBG_##fac))
29
30# define dfprintk(fac, args...)	\
31	do { \
32		ifdebug(fac) \
33			printk(KERN_DEFAULT args); \
34	} while (0)
35
36# define dfprintk_rcu(fac, args...)	\
37	do { \
38		ifdebug(fac) { \
39			rcu_read_lock(); \
40			printk(KERN_DEFAULT args); \
41			rcu_read_unlock(); \
42		} \
43	} while (0)
44
45# define RPC_IFDEBUG(x)		x
46#else
47# define ifdebug(fac)		if (0)
48# define dfprintk(fac, args...)	do {} while (0)
49# define dfprintk_rcu(fac, args...)	do {} while (0)
50# define RPC_IFDEBUG(x)
51#endif
52
53/*
54 * Sysctl interface for RPC debugging
55 */
56
57struct rpc_clnt;
58struct rpc_xprt;
59
60#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
61void		rpc_register_sysctl(void);
62void		rpc_unregister_sysctl(void);
63void		sunrpc_debugfs_init(void);
64void		sunrpc_debugfs_exit(void);
65void		rpc_clnt_debugfs_register(struct rpc_clnt *);
66void		rpc_clnt_debugfs_unregister(struct rpc_clnt *);
67void		rpc_xprt_debugfs_register(struct rpc_xprt *);
68void		rpc_xprt_debugfs_unregister(struct rpc_xprt *);
69#else
70static inline void
71sunrpc_debugfs_init(void)
72{
73	return;
74}
75
76static inline void
77sunrpc_debugfs_exit(void)
78{
79	return;
80}
81
82static inline void
83rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
84{
85	return;
86}
87
88static inline void
89rpc_clnt_debugfs_unregister(struct rpc_clnt *clnt)
90{
91	return;
92}
93
94static inline void
95rpc_xprt_debugfs_register(struct rpc_xprt *xprt)
96{
97	return;
98}
99
100static inline void
101rpc_xprt_debugfs_unregister(struct rpc_xprt *xprt)
102{
103	return;
104}
105#endif
106
107#endif /* _LINUX_SUNRPC_DEBUG_H_ */
108