From: David Woodhouse <dwmw2@infradead.org>
To: Jan Kara <jack@suse.cz>
Cc: David Howells <dhowells@redhat.com>,
linux-kernel@vger.kernel.org, will.deacon@arm.com,
rostedt@goodmis.org, pmladek@suse.cz
Subject: Re: [PATCH] printk: Don't discard earlier unprinted messages to make space
Date: Thu, 22 Oct 2015 13:36:22 +0100 [thread overview]
Message-ID: <1445517382.4113.57.camel@infradead.org> (raw)
In-Reply-To: <20151022121824.GB1768@quack.suse.cz>
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On Thu, 2015-10-22 at 14:18 +0200, Jan Kara wrote:
>
> >
> > What happened to it? And how do we fix it?
>
> Hard to fix since you'd easily get RCU stalls and softlockup messages on
> systems with lots of CPUs and heavy printk traffic...
If we have to explicitly opt in to synchronous output, then such things
should be tolerable.
--
dwmw2
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next prev parent reply other threads:[~2015-10-22 12:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-22 10:16 [PATCH] printk: Don't discard earlier unprinted messages to make space David Howells
2015-10-22 10:28 ` David Woodhouse
2015-10-22 12:18 ` Jan Kara
2015-10-22 12:36 ` David Woodhouse [this message]
2015-10-22 12:30 ` Petr Mladek
2015-10-22 13:19 ` David Howells
2015-10-22 13:23 ` David Woodhouse
2015-10-23 8:49 ` Petr Mladek
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