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tracing: Add missing spaces in trace_print_hex_seq()

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If the buffer length is larger than 16 and concatenate is set to false,
there would be missing spaces every 16 bytes.
Example:
  Before: c5 11 10 50 05 4d 31 40 00 40 00 40 00 4d 31 4000 40 00
  After:  c5 11 10 50 05 4d 31 40 00 40 00 40 00 4d 31 40 00 40 00

Link: https://lore.kernel.org/linux-trace-kernel/20230426032257.3157247-1-lyenting@google.com

Signed-off-by: Ken Lin <lyenting@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Ken Lin 2023-04-26 03:22:57 +00:00 committed by Steven Rostedt (Google)
parent 7c339fb4d8
commit adace44082
1 changed files with 4 additions and 1 deletions
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5
kernel/trace/trace_output.c
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@ -221,8 +221,11 @@ trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len,
const char *ret = trace_seq_buffer_ptr(p);
const char *fmt = concatenate ? "%*phN" : "%*ph";
for (i = 0; i < buf_len; i += 16)
for (i = 0; i < buf_len; i += 16) {
if (!concatenate && i != 0)
trace_seq_putc(p, ' ');
trace_seq_printf(p, fmt, min(buf_len - i, 16), &buf[i]);
}
trace_seq_putc(p, 0);
return ret;