linux-kernel - Re: [PATCH v1 1/1] kernel.h: Split out panic and oops helpers

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Message-ID: <CAHp75Ve9vBQqSegM2-ch9NUN-MdevxxOs5ZdHkk1W7AacN+Wrw@mail.gmail.com>
Date:   Wed, 7 Apr 2021 10:33:44 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Joerg Roedel <jroedel@...e.de>, Wei Liu <wei.liu@...nel.org>,
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        Iurii Zaikin <yzaikin@...gle.com>
Subject: Re: [PATCH v1 1/1] kernel.h: Split out panic and oops helpers

On Wed, Apr 7, 2021 at 10:25 AM Luis Chamberlain <mcgrof@...nel.org> wrote:
>
> On Tue, Apr 06, 2021 at 04:31:58PM +0300, Andy Shevchenko wrote:
> > diff --git a/include/linux/panic_notifier.h b/include/linux/panic_notifier.h
> > new file mode 100644
> > index 000000000000..41e32483d7a7
> > --- /dev/null
> > +++ b/include/linux/panic_notifier.h
> > @@ -0,0 +1,12 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +#ifndef _LINUX_PANIC_NOTIFIERS_H
> > +#define _LINUX_PANIC_NOTIFIERS_H
> > +
> > +#include <linux/notifier.h>
> > +#include <linux/types.h>
> > +
> > +extern struct atomic_notifier_head panic_notifier_list;
> > +
> > +extern bool crash_kexec_post_notifiers;
> > +
> > +#endif       /* _LINUX_PANIC_NOTIFIERS_H */
>
> Why is it worth it to add another file just for this?

The main point is to break tons of loops that prevent having clean
headers anymore.

In this case, see bug.h, which is very important in this sense.

>  Seems like a very
> small file.

If it is an argument, it's kinda strange. We have much smaller headers.

-- 
With Best Regards,
Andy Shevchenko