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tracing: Use seq_buf_hex_dump() to dump buffers

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Without this, buffers can be printed with __print_array macro that has
no formatting options and can be hard to read. The other way is to
mimic formatting capability with multiple calls of trace event with one
call per row which gives performance impact and different timestamp in
each row.

Link: http://lkml.kernel.org/r/1573130738-29390-2-git-send-email-piotrx.maziarz@linux.intel.com

Signed-off-by: Piotr Maziarz <piotrx.maziarz@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Piotr Maziarz
2019-11-07 13:45:38 +01:00
committed by Steven Rostedt (VMware)
parent 353cade314
commit ef56e047b2
5 changed files with 60 additions and 0 deletions
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4
include/linux/trace_seq.h
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@@ -92,6 +92,10 @@ extern int trace_seq_path(struct trace_seq *s, const struct path *path);
extern void trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,
int nmaskbits);
extern 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);
#else /* CONFIG_TRACING */
static inline void trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
{