diff options
Diffstat (limited to 'kernel/trace/trace_output.c')
| -rw-r--r-- | kernel/trace/trace_output.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 5d33a7352919..aea6a1218c7d 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -162,15 +162,27 @@ trace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr, } EXPORT_SYMBOL_GPL(trace_print_bitmask_seq); +/** + * trace_print_hex_seq - print buffer as hex sequence + * @p: trace seq struct to write to + * @buf: The buffer to print + * @buf_len: Length of @buf in bytes + * @concatenate: Print @buf as single hex string or with spacing + * + * Prints the passed buffer as a hex sequence either as a whole, + * single hex string if @concatenate is true or with spacing after + * each byte in case @concatenate is false. + */ const char * -trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len) +trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len, + bool concatenate) { int i; const char *ret = trace_seq_buffer_ptr(p); for (i = 0; i < buf_len; i++) - trace_seq_printf(p, "%s%2.2x", i == 0 ? "" : " ", buf[i]); - + trace_seq_printf(p, "%s%2.2x", concatenate || i == 0 ? "" : " ", + buf[i]); trace_seq_putc(p, 0); return ret; |