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

Sergey Senozhatsky
2017-09-01T01:40:59Z

Hi,

On (08/29/17 22:24), Pavel Machek wrote:
> > > In 4.13-rc, printk("foo"); printk("bar"); seems to produce
> > > foo\nbar. That's... quite surprising/unwelcome. What is going on
> > > there? Are timestamps responsible?
> >
> > No.
> >
> > It's actively trying to treach you not to do shit.
> >
> > If you want to continue a line, you NEED to use KERN_CONT.
> >
> > That has always been true. It hasn't always been enforced, though.
>
> Dumping hex buffer for debugging should not be a rocket science. You
> are welcome not add checkpatch rules to prevent such code from being
> merged...

well... just a note, I personally developed a new habit - use
pr_err/pr_cont/etc macros instead of explicit printk(KERN_FOO "...").
may be this can work for you. and we _probably_ need to advertise
pr_foo() more.

-ss