From: Ian Campbell <ian.campbell@citrix.com>
To: Jan Beulich <JBeulich@suse.com>,
xen-devel <xen-devel@lists.xenproject.org>
Cc: Keir Fraser <keir@xen.org>,
Ian Jackson <Ian.Jackson@eu.citrix.com>, Tim Deegan <tim@xen.org>
Subject: Re: [PATCH] console: make printk() line continuation tracking per-CPU
Date: Wed, 25 Nov 2015 10:39:12 +0000 [thread overview]
Message-ID: <1448447952.17688.45.camel@citrix.com> (raw)
In-Reply-To: <5654AE4002000078000B8A0B@prv-mh.provo.novell.com>
On Tue, 2015-11-24 at 10:36 -0700, Jan Beulich wrote:
> This avoids cases where split messages (with other than the initial
> part not carrying a log level; single line messages only of course)
> issued on multiple CPUs interfere with each other, causing messages to
> be issued which are supposed to be suppressed due to the log level
> setting. E.g.
>
> CPU A CPU B
> XENLOG_G_DEBUG "abc"
> XENLOG_G_DEBUG "def\n"
> "xyz\n"
>
> would cause the last message to be logged despite this obviously not
> being intended (at default log levels).
>
> Suggested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
prev parent reply other threads:[~2015-11-25 10:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-24 17:36 [PATCH] console: make printk() line continuation tracking per-CPU Jan Beulich
2015-11-25 10:39 ` Ian Campbell [this message]
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