linux-kernel - Re: [PATCH 2/5] x86: remove idle

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Date:   Wed, 7 Dec 2016 12:46:12 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Pavel Machek <pavel@....cz>
cc:     Len Brown <lenb@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org, Len Brown <len.brown@...el.com>
Subject: Re: [PATCH 2/5] x86: remove idle_notifier

On Tue, 6 Dec 2016, Pavel Machek wrote:
> > From: Len Brown <len.brown@...el.com>
> > 
> > Upon removal of the i7300_idle driver, the idle_notifer is unused.
> 
> Actually... do we want to keep this this one? There's "cpu is loaded"
> led trigger, which is implemented on arm but not on x86.
> 
> I tried to patch process.c, but this would be easier (and does not
> require new hooks).
> 
> Does that make sense?

No. Notifiers are crap.

I assume this LED thing is just for entertainment purposes as I cannot
figure out why it would be useful. ARM has it does not qualify as useful.

Thanks,

	tglx