1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef DRBD_POLYMORPH_PRINTK_H
#define DRBD_POLYMORPH_PRINTK_H
#if !defined(CONFIG_DYNAMIC_DEBUG)
#undef DEFINE_DYNAMIC_DEBUG_METADATA
#undef __dynamic_pr_debug
#undef DYNAMIC_DEBUG_BRANCH
#define DEFINE_DYNAMIC_DEBUG_METADATA(D, F) const char *D = F; ((void)D)
#define __dynamic_pr_debug(D, F, args...) do { (void)(D); if (0) printk(F, ## args); } while (0)
#define DYNAMIC_DEBUG_BRANCH(D) false
#endif
#define __drbd_printk_drbd_device_prep(device) \
const struct drbd_device *__d = (device); \
const struct drbd_resource *__r = __d->resource
#define __drbd_printk_drbd_device_fmt(fmt) "drbd %s/%u drbd%u: " fmt
#define __drbd_printk_drbd_device_args() __r->name, __d->vnr, __d->minor
#define __drbd_printk_drbd_device_unprep()
#define __drbd_printk_drbd_peer_device_prep(peer_device) \
const struct drbd_device *__d; \
const struct drbd_resource *__r; \
__d = (peer_device)->device; \
__r = __d->resource
#define __drbd_printk_drbd_peer_device_fmt(fmt) \
"drbd %s/%u drbd%u: " fmt
#define __drbd_printk_drbd_peer_device_args() \
__r->name, __d->vnr, __d->minor
#define __drbd_printk_drbd_peer_device_unprep()
#define __drbd_printk_drbd_resource_prep(resource) \
const struct drbd_resource *__r = resource
#define __drbd_printk_drbd_resource_fmt(fmt) "drbd %s: " fmt
#define __drbd_printk_drbd_resource_args() __r->name
#define __drbd_printk_drbd_resource_unprep(resource)
#define __drbd_printk_drbd_connection_prep(connection) \
const struct drbd_connection *__c = (connection); \
const struct drbd_resource *__r = __c->resource
#define __drbd_printk_drbd_connection_fmt(fmt) \
"drbd %s: " fmt
#define __drbd_printk_drbd_connection_args() \
__r->name
#define __drbd_printk_drbd_connection_unprep()
void drbd_printk_with_wrong_object_type(void);
void drbd_dyn_dbg_with_wrong_object_type(void);
#define __drbd_printk_choose_cond(obj, struct_name) \
(__builtin_types_compatible_p(typeof(obj), struct struct_name *) || \
__builtin_types_compatible_p(typeof(obj), const struct struct_name *))
#define __drbd_printk_if_same_type(obj, struct_name, level, fmt, args...) \
__drbd_printk_choose_cond(obj, struct_name), \
({ \
__drbd_printk_ ## struct_name ## _prep((const struct struct_name *)(obj)); \
printk(level __drbd_printk_ ## struct_name ## _fmt(fmt), \
__drbd_printk_ ## struct_name ## _args(), ## args); \
__drbd_printk_ ## struct_name ## _unprep(); \
})
#define drbd_printk(level, obj, fmt, args...) \
__builtin_choose_expr( \
__drbd_printk_if_same_type(obj, drbd_device, level, fmt, ## args), \
__builtin_choose_expr( \
__drbd_printk_if_same_type(obj, drbd_resource, level, fmt, ## args), \
__builtin_choose_expr( \
__drbd_printk_if_same_type(obj, drbd_connection, level, fmt, ## args), \
__builtin_choose_expr( \
__drbd_printk_if_same_type(obj, drbd_peer_device, level, fmt, ## args), \
drbd_printk_with_wrong_object_type()))))
#define __drbd_dyn_dbg_if_same_type(obj, struct_name, fmt, args...) \
__drbd_printk_choose_cond(obj, struct_name), \
({ \
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
if (DYNAMIC_DEBUG_BRANCH(descriptor)) { \
__drbd_printk_ ## struct_name ## _prep((const struct struct_name *)(obj)); \
__dynamic_pr_debug(&descriptor, __drbd_printk_ ## struct_name ## _fmt(fmt), \
__drbd_printk_ ## struct_name ## _args(), ## args); \
__drbd_printk_ ## struct_name ## _unprep(); \
} \
})
#define dynamic_drbd_dbg(obj, fmt, args...) \
__builtin_choose_expr( \
__drbd_dyn_dbg_if_same_type(obj, drbd_device, fmt, ## args), \
__builtin_choose_expr( \
__drbd_dyn_dbg_if_same_type(obj, drbd_resource, fmt, ## args), \
__builtin_choose_expr( \
__drbd_dyn_dbg_if_same_type(obj, drbd_connection, fmt, ## args), \
__builtin_choose_expr( \
__drbd_dyn_dbg_if_same_type(obj, drbd_peer_device, fmt, ## args), \
drbd_dyn_dbg_with_wrong_object_type()))))
#define drbd_emerg(device, fmt, args...) \
drbd_printk(KERN_EMERG, device, fmt, ## args)
#define drbd_alert(device, fmt, args...) \
drbd_printk(KERN_ALERT, device, fmt, ## args)
#define drbd_crit(device, fmt, args...) \
drbd_printk(KERN_CRIT, device, fmt, ## args)
#define drbd_err(device, fmt, args...) \
drbd_printk(KERN_ERR, device, fmt, ## args)
#define drbd_warn(device, fmt, args...) \
drbd_printk(KERN_WARNING, device, fmt, ## args)
#define drbd_notice(device, fmt, args...) \
drbd_printk(KERN_NOTICE, device, fmt, ## args)
#define drbd_info(device, fmt, args...) \
drbd_printk(KERN_INFO, device, fmt, ## args)
#define drbd_ratelimit() \
({ \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
__ratelimit(&_rs); \
})
#define D_ASSERT(x, exp) \
do { \
if (!(exp)) \
drbd_err(x, "ASSERTION %s FAILED in %s\n", \
#exp, __func__); \
} while (0)
/**
* expect - Make an assertion
*
* Unlike the assert macro, this macro returns a boolean result.
*/
#define expect(x, exp) ({ \
bool _bool = (exp); \
if (!_bool && drbd_ratelimit()) \
drbd_err(x, "ASSERTION %s FAILED in %s\n", \
#exp, __func__); \
_bool; \
})
#endif
|
