linux-kernel - Re: [PATCH v2] console: Replace #if 1 with a bool to ignore

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Date:   Thu, 12 Jul 2018 15:43:12 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>
Subject: Re: [PATCH v2] console: Replace #if 1 with a bool to ignore

On Thu 2018-07-12 09:30:49, Steven Rostedt wrote:
> On Thu, 12 Jul 2018 09:29:38 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> > From: Steven Rostedt (VMware) <rostedt@...dmis.org>
> > 
> > There's been discussion on the fb list about the addition of
> > WARN_CONSOLE_UNLOCKED() inside the fb code. The complaint is that when
> > the fb module is loaded with lockless_register_fb the console lock is
> > not taken for debugging reasons. With the addition of
> > WARN_CONSOLE_UNLOCK() within the fb code, this causes the console to
> > fill up with warnings when trying to debug the fb driver.
> > 
> > There's also a #if 1 that enables the warning which was added before
> > git history, and we look down on constant #if's in the kernel nowadays
> > anyway.
> > 
> > Remove the #if 1 and add a ignore_console_lock_warning boolean that can
> > be set by drivers to ignore the warning in order to do debugging.
> > 
> > Link: http://lkml.kernel.org/r/717e6337-e7a6-7a92-1c1b-8929a25696b5@suse.de
> > Reviewed-by: Hans de Goede <hdegoede@...hat.com>
> > Acked-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> > Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> 
> Petr,
> 
> If you want this to go by way of fbdev tree, then can you Ack it?

Sure.

Acked-by: Petr Mladek <pmladek@...e.com>

I assume that it will go via fbdev tree with the other changes
unless I hear otherwise.

Best Regards,
Petr