linux-kernel - Re: [GIT PULL] printk for 4.13

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Message-ID: <20170706011844.GC7195@jagdpanzerIV.localdomain>
Date:   Thu, 6 Jul 2017 10:18:44 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] printk for 4.13

On (07/05/17 18:15), Linus Torvalds wrote:
> On Wed, Jul 5, 2017 at 5:44 PM, Sergey Senozhatsky
> <sergey.senozhatsky.work@...il.com> wrote:
> >
> > PRINTK_NMI_DEFERRED_CONTEXT_MASK calls into vprintk_deferred(), which
> > does vprintk_emit(0, LOGLEVEL_SCHED, NULL, 0, fmt, args). and
> > vprintk_emit() LOGLEVEL_SCHED is nothing, but printk_deferred(), which
> > never calls into the scheduler and does not even try to lock console_sem.
> 
> Hmm. Ok. I think I see what you're saying. We're just adding it to the
> log buffer, but not actually going through the whole "lets see if we
> can push it further".

yep ;)

> So I will take another look tomorrow, right now I'm feeling a bit
> merged out for the day,

sure. thanks.

	-ss