Commit | Line | Data |
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9504504c SR |
1 | #ifndef _LINUX_TRACE_SEQ_H |
2 | #define _LINUX_TRACE_SEQ_H | |
3 | ||
6d723736 SR |
4 | #include <linux/fs.h> |
5 | ||
78be6914 WZ |
6 | #include <asm/page.h> |
7 | ||
9504504c SR |
8 | /* |
9 | * Trace sequences are used to allow a function to call several other functions | |
6d3f1e12 | 10 | * to create a string of data to use (up to a max of PAGE_SIZE). |
9504504c SR |
11 | */ |
12 | ||
13 | struct trace_seq { | |
14 | unsigned char buffer[PAGE_SIZE]; | |
15 | unsigned int len; | |
16 | unsigned int readpos; | |
d184b31c | 17 | int full; |
9504504c SR |
18 | }; |
19 | ||
20 | static inline void | |
21 | trace_seq_init(struct trace_seq *s) | |
22 | { | |
23 | s->len = 0; | |
24 | s->readpos = 0; | |
d184b31c | 25 | s->full = 0; |
9504504c SR |
26 | } |
27 | ||
28 | /* | |
29 | * Currently only defined when tracing is enabled. | |
30 | */ | |
31 | #ifdef CONFIG_TRACING | |
b9075fa9 JP |
32 | extern __printf(2, 3) |
33 | int trace_seq_printf(struct trace_seq *s, const char *fmt, ...); | |
34 | extern __printf(2, 0) | |
35 | int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args); | |
9504504c SR |
36 | extern int |
37 | trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary); | |
a63ce5b3 | 38 | extern int trace_print_seq(struct seq_file *m, struct trace_seq *s); |
9504504c SR |
39 | extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf, |
40 | size_t cnt); | |
41 | extern int trace_seq_puts(struct trace_seq *s, const char *str); | |
42 | extern int trace_seq_putc(struct trace_seq *s, unsigned char c); | |
43 | extern int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len); | |
44 | extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, | |
45 | size_t len); | |
46 | extern void *trace_seq_reserve(struct trace_seq *s, size_t len); | |
38eff289 | 47 | extern int trace_seq_path(struct trace_seq *s, const struct path *path); |
9504504c | 48 | |
4449bf92 SRRH |
49 | extern int trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp, |
50 | int nmaskbits); | |
51 | ||
9504504c SR |
52 | #else /* CONFIG_TRACING */ |
53 | static inline int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) | |
9504504c SR |
54 | { |
55 | return 0; | |
56 | } | |
57 | static inline int | |
58 | trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary) | |
59 | { | |
60 | return 0; | |
61 | } | |
62 | ||
4449bf92 SRRH |
63 | static inline int |
64 | trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp, | |
65 | int nmaskbits) | |
66 | { | |
67 | return 0; | |
68 | } | |
69 | ||
a63ce5b3 | 70 | static inline int trace_print_seq(struct seq_file *m, struct trace_seq *s) |
9504504c | 71 | { |
a63ce5b3 | 72 | return 0; |
9504504c SR |
73 | } |
74 | static inline ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf, | |
75 | size_t cnt) | |
76 | { | |
77 | return 0; | |
78 | } | |
79 | static inline int trace_seq_puts(struct trace_seq *s, const char *str) | |
80 | { | |
81 | return 0; | |
82 | } | |
23de29de | 83 | static inline int trace_seq_putc(struct trace_seq *s, unsigned char c) |
9504504c SR |
84 | { |
85 | return 0; | |
86 | } | |
87 | static inline int | |
88 | trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 | static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, | |
93 | size_t len) | |
94 | { | |
95 | return 0; | |
96 | } | |
97 | static inline void *trace_seq_reserve(struct trace_seq *s, size_t len) | |
98 | { | |
99 | return NULL; | |
100 | } | |
38eff289 | 101 | static inline int trace_seq_path(struct trace_seq *s, const struct path *path) |
9504504c SR |
102 | { |
103 | return 0; | |
104 | } | |
105 | #endif /* CONFIG_TRACING */ | |
106 | ||
107 | #endif /* _LINUX_TRACE_SEQ_H */ |