31 #define TRACE_SEQ_BUF_LEFT(s) seq_buf_buffer_left(&(s)->seq)  argument
34 #define TRACE_SEQ_BUF_USED(s) seq_buf_used(&(s)->seq)  argument
37  * trace_seq should work with being initialized with 0s.
39 static inline void __trace_seq_init(struct trace_seq *s)  in __trace_seq_init()  argument
41 	if (unlikely(!s->seq.size))  in __trace_seq_init()
42 		trace_seq_init(s);  in __trace_seq_init()
48  * @s: the trace_seq descriptor that is the source.
54 int trace_print_seq(struct seq_file *m, struct trace_seq *s)  in trace_print_seq()  argument
58 	__trace_seq_init(s);  in trace_print_seq()
60 	ret = seq_buf_print_seq(m, &s->seq);  in trace_print_seq()
68 		trace_seq_init(s);  in trace_print_seq()
75  * @s: trace sequence descriptor
81  * buffer (@s). Then the output may be either used by
84 void trace_seq_printf(struct trace_seq *s, const char *fmt, ...)  in trace_seq_printf()  argument
86 	unsigned int save_len = s->seq.len;  in trace_seq_printf()
89 	if (s->full)  in trace_seq_printf()
92 	__trace_seq_init(s);  in trace_seq_printf()
95 	seq_buf_vprintf(&s->seq, fmt, ap);  in trace_seq_printf()
99 	if (unlikely(seq_buf_has_overflowed(&s->seq))) {  in trace_seq_printf()
100 		s->seq.len = save_len;  in trace_seq_printf()
101 		s->full = 1;  in trace_seq_printf()
108  * @s:		trace sequence descriptor
112  * Writes a ASCII representation of a bitmask string into @s.
114 void trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,  in trace_seq_bitmask()  argument
117 	unsigned int save_len = s->seq.len;  in trace_seq_bitmask()
119 	if (s->full)  in trace_seq_bitmask()
122 	__trace_seq_init(s);  in trace_seq_bitmask()
124 	seq_buf_printf(&s->seq, "%*pb", nmaskbits, maskp);  in trace_seq_bitmask()
126 	if (unlikely(seq_buf_has_overflowed(&s->seq))) {  in trace_seq_bitmask()
127 		s->seq.len = save_len;  in trace_seq_bitmask()
128 		s->full = 1;  in trace_seq_bitmask()
135  * @s: trace sequence descriptor
141  * buffer (@s). Then the output may be either used by
144 void trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)  in trace_seq_vprintf()  argument
146 	unsigned int save_len = s->seq.len;  in trace_seq_vprintf()
148 	if (s->full)  in trace_seq_vprintf()
151 	__trace_seq_init(s);  in trace_seq_vprintf()
153 	seq_buf_vprintf(&s->seq, fmt, args);  in trace_seq_vprintf()
156 	if (unlikely(seq_buf_has_overflowed(&s->seq))) {  in trace_seq_vprintf()
157 		s->seq.len = save_len;  in trace_seq_vprintf()
158 		s->full = 1;  in trace_seq_vprintf()
165  * @s: trace sequence descriptor
178 void trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)  in trace_seq_bprintf()  argument
180 	unsigned int save_len = s->seq.len;  in trace_seq_bprintf()
182 	if (s->full)  in trace_seq_bprintf()
185 	__trace_seq_init(s);  in trace_seq_bprintf()
187 	seq_buf_bprintf(&s->seq, fmt, binary);  in trace_seq_bprintf()
190 	if (unlikely(seq_buf_has_overflowed(&s->seq))) {  in trace_seq_bprintf()
191 		s->seq.len = save_len;  in trace_seq_bprintf()
192 		s->full = 1;  in trace_seq_bprintf()
200  * @s: trace sequence descriptor
205  * into a special buffer (@s) for later retrieval by a sequencer
208 void trace_seq_puts(struct trace_seq *s, const char *str)  in trace_seq_puts()  argument
212 	if (s->full)  in trace_seq_puts()
215 	__trace_seq_init(s);  in trace_seq_puts()
217 	if (len > TRACE_SEQ_BUF_LEFT(s)) {  in trace_seq_puts()
218 		s->full = 1;  in trace_seq_puts()
222 	seq_buf_putmem(&s->seq, str, len);  in trace_seq_puts()
228  * @s: trace sequence descriptor
233  * into a special buffer (@s) for later retrieval by a sequencer
236 void trace_seq_putc(struct trace_seq *s, unsigned char c)  in trace_seq_putc()  argument
238 	if (s->full)  in trace_seq_putc()
241 	__trace_seq_init(s);  in trace_seq_putc()
243 	if (TRACE_SEQ_BUF_LEFT(s) < 1) {  in trace_seq_putc()
244 		s->full = 1;  in trace_seq_putc()
248 	seq_buf_putc(&s->seq, c);  in trace_seq_putc()
254  * @s: trace sequence descriptor
262 void trace_seq_putmem(struct trace_seq *s, const void *mem, unsigned int len)  in trace_seq_putmem()  argument
264 	if (s->full)  in trace_seq_putmem()
267 	__trace_seq_init(s);  in trace_seq_putmem()
269 	if (len > TRACE_SEQ_BUF_LEFT(s)) {  in trace_seq_putmem()
270 		s->full = 1;  in trace_seq_putmem()
274 	seq_buf_putmem(&s->seq, mem, len);  in trace_seq_putmem()
280  * @s: trace sequence descriptor
288 void trace_seq_putmem_hex(struct trace_seq *s, const void *mem,  in trace_seq_putmem_hex()  argument
291 	unsigned int save_len = s->seq.len;  in trace_seq_putmem_hex()
293 	if (s->full)  in trace_seq_putmem_hex()
296 	__trace_seq_init(s);  in trace_seq_putmem_hex()
299 	if (len * 2 > TRACE_SEQ_BUF_LEFT(s)) {  in trace_seq_putmem_hex()
300 		s->full = 1;  in trace_seq_putmem_hex()
305 	seq_buf_putmem_hex(&s->seq, mem, len);  in trace_seq_putmem_hex()
307 	if (unlikely(seq_buf_has_overflowed(&s->seq))) {  in trace_seq_putmem_hex()
308 		s->seq.len = save_len;  in trace_seq_putmem_hex()
309 		s->full = 1;  in trace_seq_putmem_hex()
317  * @s: trace sequence descriptor
327 int trace_seq_path(struct trace_seq *s, const struct path *path)  in trace_seq_path()  argument
329 	unsigned int save_len = s->seq.len;  in trace_seq_path()
331 	if (s->full)  in trace_seq_path()
334 	__trace_seq_init(s);  in trace_seq_path()
336 	if (TRACE_SEQ_BUF_LEFT(s) < 1) {  in trace_seq_path()
337 		s->full = 1;  in trace_seq_path()
341 	seq_buf_path(&s->seq, path, "\n");  in trace_seq_path()
343 	if (unlikely(seq_buf_has_overflowed(&s->seq))) {  in trace_seq_path()
344 		s->seq.len = save_len;  in trace_seq_path()
345 		s->full = 1;  in trace_seq_path()
355  * @s: trace sequence descriptor
360  * by @ubuf. It starts from the last read position (@s->readpos)
362  * the content in the buffer (@s->len), which ever comes first.
369  * sequenc (@s->len == @s->readpos).
373 int trace_seq_to_user(struct trace_seq *s, char __user *ubuf, int cnt)  in trace_seq_to_user()  argument
375 	__trace_seq_init(s);  in trace_seq_to_user()
376 	return seq_buf_to_user(&s->seq, ubuf, cnt);  in trace_seq_to_user()