1#ifndef _LINUX_TRACE_SEQ_H
2#define _LINUX_TRACE_SEQ_H
3
4#include <linux/fs.h>
5
6#include <asm/page.h>
7
8
9
10
11
12
13struct trace_seq {
14 unsigned char buffer[PAGE_SIZE];
15 unsigned int len;
16 unsigned int readpos;
17 int full;
18};
19
20static inline void
21trace_seq_init(struct trace_seq *s)
22{
23 s->len = 0;
24 s->readpos = 0;
25 s->full = 0;
26}
27
28
29
30
31#ifdef CONFIG_TRACING
32extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
33 __attribute__ ((format (printf, 2, 3)));
34extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
35 __attribute__ ((format (printf, 2, 0)));
36extern int
37trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary);
38extern int trace_print_seq(struct seq_file *m, struct trace_seq *s);
39extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
40 size_t cnt);
41extern int trace_seq_puts(struct trace_seq *s, const char *str);
42extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
43extern int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len);
44extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
45 size_t len);
46extern void *trace_seq_reserve(struct trace_seq *s, size_t len);
47extern int trace_seq_path(struct trace_seq *s, struct path *path);
48
49#else
50static inline int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
51{
52 return 0;
53}
54static inline int
55trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)
56{
57 return 0;
58}
59
60static inline int trace_print_seq(struct seq_file *m, struct trace_seq *s)
61{
62 return 0;
63}
64static inline ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
65 size_t cnt)
66{
67 return 0;
68}
69static inline int trace_seq_puts(struct trace_seq *s, const char *str)
70{
71 return 0;
72}
73static inline int trace_seq_putc(struct trace_seq *s, unsigned char c)
74{
75 return 0;
76}
77static inline int
78trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len)
79{
80 return 0;
81}
82static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
83 size_t len)
84{
85 return 0;
86}
87static inline void *trace_seq_reserve(struct trace_seq *s, size_t len)
88{
89 return NULL;
90}
91static inline int trace_seq_path(struct trace_seq *s, struct path *path)
92{
93 return 0;
94}
95#endif
96
97#endif
98