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); |
36aabfff SRRH |
39 | extern int trace_seq_to_user(struct trace_seq *s, char __user *ubuf, |
40 | int cnt); | |
9504504c SR |
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); | |
36aabfff | 43 | extern int trace_seq_putmem(struct trace_seq *s, const void *mem, unsigned int len); |
9504504c | 44 | extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, |
36aabfff | 45 | unsigned int len); |
38eff289 | 46 | extern int trace_seq_path(struct trace_seq *s, const struct path *path); |
9504504c | 47 | |
4449bf92 SRRH |
48 | extern int trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp, |
49 | int nmaskbits); | |
50 | ||
9504504c SR |
51 | #else /* CONFIG_TRACING */ |
52 | static inline int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) | |
9504504c SR |
53 | { |
54 | return 0; | |
55 | } | |
56 | static inline int | |
57 | trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary) | |
58 | { | |
59 | return 0; | |
60 | } | |
61 | ||
4449bf92 SRRH |
62 | static inline int |
63 | trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp, | |
64 | int nmaskbits) | |
65 | { | |
66 | return 0; | |
67 | } | |
68 | ||
a63ce5b3 | 69 | static inline int trace_print_seq(struct seq_file *m, struct trace_seq *s) |
9504504c | 70 | { |
a63ce5b3 | 71 | return 0; |
9504504c | 72 | } |
36aabfff SRRH |
73 | static inline int trace_seq_to_user(struct trace_seq *s, char __user *ubuf, |
74 | int cnt) | |
9504504c SR |
75 | { |
76 | return 0; | |
77 | } | |
78 | static inline int trace_seq_puts(struct trace_seq *s, const char *str) | |
79 | { | |
80 | return 0; | |
81 | } | |
23de29de | 82 | static inline int trace_seq_putc(struct trace_seq *s, unsigned char c) |
9504504c SR |
83 | { |
84 | return 0; | |
85 | } | |
86 | static inline int | |
36aabfff | 87 | trace_seq_putmem(struct trace_seq *s, const void *mem, unsigned int len) |
9504504c SR |
88 | { |
89 | return 0; | |
90 | } | |
91 | static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, | |
36aabfff | 92 | unsigned int len) |
9504504c SR |
93 | { |
94 | return 0; | |
95 | } | |
38eff289 | 96 | static inline int trace_seq_path(struct trace_seq *s, const struct path *path) |
9504504c SR |
97 | { |
98 | return 0; | |
99 | } | |
100 | #endif /* CONFIG_TRACING */ | |
101 | ||
102 | #endif /* _LINUX_TRACE_SEQ_H */ |