diff options
Diffstat (limited to 'kernel/trace/trace_seq.c')
| -rw-r--r-- | kernel/trace/trace_seq.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/kernel/trace/trace_seq.c b/kernel/trace/trace_seq.c index 6b1c562ffdaf..1d84fcc78e3e 100644 --- a/kernel/trace/trace_seq.c +++ b/kernel/trace/trace_seq.c @@ -30,9 +30,6 @@ /* How much buffer is left on the trace_seq? */ #define TRACE_SEQ_BUF_LEFT(s) seq_buf_buffer_left(&(s)->seq) -/* How much buffer is written? */ -#define TRACE_SEQ_BUF_USED(s) seq_buf_used(&(s)->seq) - /* * trace_seq should work with being initialized with 0s. */ @@ -376,3 +373,33 @@ int trace_seq_to_user(struct trace_seq *s, char __user *ubuf, int cnt) return seq_buf_to_user(&s->seq, ubuf, cnt); } EXPORT_SYMBOL_GPL(trace_seq_to_user); + +int trace_seq_hex_dump(struct trace_seq *s, const char *prefix_str, + int prefix_type, int rowsize, int groupsize, + const void *buf, size_t len, bool ascii) +{ + unsigned int save_len = s->seq.len; + + if (s->full) + return 0; + + __trace_seq_init(s); + + if (TRACE_SEQ_BUF_LEFT(s) < 1) { + s->full = 1; + return 0; + } + + seq_buf_hex_dump(&(s->seq), prefix_str, + prefix_type, rowsize, groupsize, + buf, len, ascii); + + if (unlikely(seq_buf_has_overflowed(&s->seq))) { + s->seq.len = save_len; + s->full = 1; + return 0; + } + + return 1; +} +EXPORT_SYMBOL(trace_seq_hex_dump); |
