Re: [PATCH 1/7] printk: Hand over printing to console if printing too long

From	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/7] printk: Hand over printing to console if printing too long
Date	2016-01-06 02:50 +0100
Message-ID	<qNLoC-2IC-19@gated-at.bofh.it> (permalink)
References	<qEaRj-7yx-5@gated-at.bofh.it> <qIvua-4Bu-13@gated-at.bofh.it> <qIGSB-3hK-5@gated-at.bofh.it> <qNAWe-43s-9@gated-at.bofh.it>
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Hello,

On (01/05/16 15:37), Jan Kara wrote:
> Hi,
> 
> On Wed 23-12-15 10:54:49, Sergey Senozhatsky wrote:
> > slowly looking through the patches.
> 
> Back from Christmas vacation...
> 
> > How about setting 'sync_print' to 'true' in...
> >   bust_spinlocks() /* only set to true */
> > or
> >   console_verbose() /* um... may be... */
> > or
> >   having a separate one-liner for that
> > 
> > void console_panic_mode(void)
> > {
> > 	sync_print = true;
> > }
> > 
> > and call it early in panic(), before we send out IPI_STOP.
> 
> I like using console_verbose() for setting sync_print to true. That will
> likely be more reliable than using oops in progress. After all
> console_verbose() is used like console_panic_mode() anyway and in quite a
> few places so it is a reasonable match.

Agree, only arch/microblaze/kernel/setup.c and arch/nios2/kernel/setup.c
do console_verbose() early in setup_arch(), the rest seems to be what I
was thinking of.

	-ss
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Thread

Re: [PATCH 1/7] printk: Hand over printing to console if printing  too long Jan Kara <jack@suse.cz> - 2016-01-05 15:40 +0100
  Re: [PATCH 1/7] printk: Hand over printing to console if printing  too long Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-01-06 02:50 +0100
  Re: [PATCH 1/7] printk: Hand over printing to console if printing  too long Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-01-06 07:50 +0100
    Re: [PATCH 1/7] printk: Hand over printing to console if printing  too long Jan Kara <jack@suse.cz> - 2016-01-06 13:30 +0100
      Re: [PATCH 1/7] printk: Hand over printing to console if printing  too long Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-01-11 14:30 +0100

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