Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline

[Måns Rullgård]

Jiri Kosina <jkosina@xxxxxxx> writes:

> On Wed, 2 Apr 2014, Linus Torvalds wrote:
>
>> Steven, Borislav, one thing that strikes me might be a good idea is to 
>> limit the amount of non-kernel noise in dmesg. We already have the 
>> concept of rate-limiting various spammy internal kernel messages for 
>> when device drivers misbehave etc. Maybe we can just add rate-limiting 
>> to the interfaces that add messages to the kernel buffers, and work 
>> around this problem that way instead while waiting for Gregs fix to 
>> percolate? Or are the systemd debug messages going to so many other 
>> places too that that wouldn't really help?
>
> I think that it's in principle a good idea, however ... the in-kernel 
> ratelimiting always happens per sourcecode location, but this will be 
> rather hard to achieve with interface such as /dev/kmsg.
>
> If /dev/kmsg is going to be ratelimited as a whole, it might potentially 
> create a severely unfair situation between individual userspace programs 
> trying to do logging (although there is apparently only one userspace 
> service doing any logging through this interface whatsoever, right?).

The point is that /dev/kmsg is *not* intended as a syslog replacement.

-- 
Måns Rullgård
mans@xxxxxxxxx
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