linux-kernel - Re: Slow down stupid pounders

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Message-ID: <20140506161004.GC25013@pd.tnic>
Date:	Tue, 6 May 2014 18:10:04 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Mike Galbraith <mgalbraith@...e.de>
Cc:	lkml <linux-kernel@...r.kernel.org>, x86-ml <x86@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mel Gorman <mgorman@...e.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: Slow down stupid pounders

On Tue, May 06, 2014 at 05:08:19PM +0200, Mike Galbraith wrote:
> Rather than ratelimit the interface perhaps send a ratelimited note
> telling the user straight up that he's begging for trouble. We can
> ignore it when regression testing, and point it out to Joe Pounder
> should he fail to notice.. or be somewhat dense.

Yeah, if those dudes don't stare at dmesg, that note doesn't bring us
whit.

Alternatively, we could do

	add_taint(TAINT_HOTPLUG_POUNDER)

when the rate is exceeded...

I'd rather like to slow it down for a second, though, if it doesn't hurt
any sensible use cases in doing so.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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