Commit 119cdbdb authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Steven Rostedt (VMware)
Browse files

tracing: Be more clever when dumping hex in __print_hex() 

Hex dump as many as 16 bytes at once in trace_print_hex_seq()
instead of byte-by-byte approach.

Link: http://lkml.kernel.org/r/20190806151543.86061-1-andriy.shevchenko@linux.intel.com



Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 08468754

kernel/trace/trace_output.c

+3 −3
Original line number Diff line number Diff line
@@ -219,10 +219,10 @@ trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len, 
{

	int i;

	const char *ret = trace_seq_buffer_ptr(p);

	const char *fmt = concatenate ? "%*phN" : "%*ph";



	for (i = 0; i < buf_len; i++)

		trace_seq_printf(p, "%s%2.2x", concatenate || i == 0 ? "" : " ",

				 buf[i]);

	for (i = 0; i < buf_len; i += 16)

		trace_seq_printf(p, fmt, min(buf_len - i, 16), &buf[i]);

	trace_seq_putc(p, 0);



	return ret;

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