lkml.org 
[lkml]   [2016]   [Feb]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] printk: avoid livelock if another CPU printks continuously
On Tue, 09 Feb 2016 17:07:42 +0100
Denys Vlasenko <dvlasenk@redhat.com> wrote:

> On 02/09/2016 04:50 PM, Steven Rostedt wrote:
> > One thing is to find the spamming code and fix that.
>
> We can't rely that there won't be never-ending concurrent printks,
> right? For one, in many setups user can cause printk flood.

No, that would be a bug. This is why we have printk_ratelimit for.

>
> I think we must ensure that printk does not livelock.

printk is a kernel utility. The users of printk must ensure this.

-- Steve

\
 
 \ /
  Last update: 2016-02-09 18:01    [W:0.039 / U:5.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site