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| author | Daniel Borkmann <daniel@iogearbox.net> | 2017-02-02 17:09:54 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-03 21:50:18 +0100 |
| commit | 3898fac1f488c76e0eef5b5267b4ba8112a82ac4 (patch) | |
| tree | fc6ee165a3338409580a8784111f53c10b22c6d5 /kernel | |
| parent | MAINTAINERS: add Ivan as a switchdev maintainer (diff) | |
| download | linux-3898fac1f488c76e0eef5b5267b4ba8112a82ac4.tar.xz linux-3898fac1f488c76e0eef5b5267b4ba8112a82ac4.zip | |
trace: rename trace_print_hex_seq arg and add kdoc
Steven suggested to improve trace_print_hex_seq() a bit after commit
2acae0d5b0f7 ("trace: add variant without spacing in trace_print_hex_seq")
in two ways: i) by adding a kdoc comment for the helper function
itself and ii) by renaming 'spacing' argument into 'concatenate'
to better denote that we don't add spaces between each hex bytes.
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_output.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 30a144b1b9ee..aea6a1218c7d 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -162,15 +162,26 @@ 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, - bool spacing) + 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", !spacing || i == 0 ? "" : " ", + trace_seq_printf(p, "%s%2.2x", concatenate || i == 0 ? "" : " ", buf[i]); trace_seq_putc(p, 0); |