Re: [PATCHv2] seq_buf: add seq_buf_do_printk() helper

[Steven Rostedt <rostedt@goodmis.org>]

On April 15, 2023 3:04:06 AM EDT, Sergey Senozhatsky <senozhatsky@chromium.org> wrote:
>On (23/04/14 11:00), Petr Mladek wrote:
>> > +void seq_buf_do_printk(struct seq_buf *s, const char *lvl)
>> > +{
>> > +	const char *start, *lf;
>> > +	int len;
>> > +
>> > +	if (s->size == 0 || s->len == 0)
>> > +		return;
>> > +
>> > +	seq_buf_terminate(s);
>> > +
>> > +	start = s->buffer;
>> > +	while ((lf = strchr(start, '\n'))) {
>> > +		len = lf - start + 1;
>> > +		printk("%s%.*s", lvl, len, start);
>> > +		start = ++lf;
>> > +	}
>> > +
>> > +	/* No trailing LF */
>> > +	if (start < s->buffer + s->len) {
>> > +		len = s->buffer + s->len - start;
>> > +		printk("%s%.*s\n", lvl, len, start);
>> 
>> We know that the string is '\0' terminated, so the last print
>> might be easier:
>> 
>> 	if (start < s->buffer + s->len)
>> 		printk("%s%s\n", lvl, start);
>
>Indeed. Steven, let me know if you'd prefer a v3.

Sure. Why not.

-- Steve

>
>> Anyway, it looks good. With or without this change:
>> 
>> Reviewed-by: Petr Mladek <pmladek@suse.com>
>
>Thanks Petr!

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