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)
18 extern unsigned int rpc_debug;
19 extern unsigned int nfs_debug;
20 extern unsigned int nfsd_debug;
21 extern 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, ...) \
38 do { \
39 ifdebug(fac) \
40 printk(KERN_DEFAULT fmt, ##__VA_ARGS__); \
41 } while (0)
42
43 # define dfprintk_cont(fac, fmt, ...) \
44 do { \
45 ifdebug(fac) \
46 printk(KERN_CONT fmt, ##__VA_ARGS__); \
47 } while (0)
48
49 # define dfprintk_rcu(fac, fmt, ...) \
50 do { \
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, ...) \
59 do { \
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
80 struct rpc_clnt;
81 struct rpc_xprt;
82
83 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
84 void rpc_register_sysctl(void);
85 void rpc_unregister_sysctl(void);
86 void sunrpc_debugfs_init(void);
87 void sunrpc_debugfs_exit(void);
88 void rpc_clnt_debugfs_register(struct rpc_clnt *);
89 void rpc_clnt_debugfs_unregister(struct rpc_clnt *);
90 void rpc_xprt_debugfs_register(struct rpc_xprt *);
91 void rpc_xprt_debugfs_unregister(struct rpc_xprt *);
92 #else
93 static inline void
94 sunrpc_debugfs_init(void)
95 {
96 return;
97 }
98
99 static inline void
100 sunrpc_debugfs_exit(void)
101 {
102 return;
103 }
104
105 static inline void
106 rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
107 {
108 return;
109 }
110
111 static inline void
112 rpc_clnt_debugfs_unregister(struct rpc_clnt *clnt)
113 {
114 return;
115 }
116
117 static inline void
118 rpc_xprt_debugfs_register(struct rpc_xprt *xprt)
119 {
120 return;
121 }
122
123 static inline void
124 rpc_xprt_debugfs_unregister(struct rpc_xprt *xprt)
125 {
126 return;
127 }
128 #endif
129
130 #endif /* _LINUX_SUNRPC_DEBUG_H_ */
131
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