Re: printk: what is going on with additional newlines?

[Sergey Senozhatsky]

Hello,

On (08/29/17 19:50), Steven Rostedt wrote:
[..]
> > A private buffer has none of those issues.
> 
> What about using the seq_buf*() then?
> 
> 	struct seq_buf s;
> 
> 	buf = kmalloc(mysize);
> 	seq_buf_init(&s, buf, mysize);
> 
> 	seq_printf(&s,"blah blah %d", bah_blah);
> 	[...]
> 	seq_printf(&s, "my last print\n");
> 
> 	printk("%.*s", s.len, s.buffer);
> 
> 	kfree(buf);

could do. for a single continuation line printk("%.*s", s.len, s.buffer)
this will work perfectly fine. for a more general case - backtraces, dumps,
etc. - this requires some tweaks.

	-ss