linux-kernel - Re: [PATCH v4] panic: keep blinking in spite of long spin timer mode

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Message-Id: <201006232235.AA00445@tamuki.linet.gr.jp>
Date:	Thu, 24 Jun 2010 07:35:34 +0900
From:	TAMUKI Shoichi <tamuki@...et.gr.jp>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Anton Blanchard <anton@...ba.org>,
	Andi Kleen <andi@...stfloor.org>,
	Andy Green <andy@...mcat.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Dmitry Torokhov <dtor@...l.ru>,
	TAMUKI Shoichi <tamuki@...et.gr.jp>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] panic: keep blinking in spite of long spin timer mode

Hello,

On Tue, 22 Jun 2010 13:16:54 -0700 Andrew Morton wrote:

> > To keep panic_timeout accuracy when running under a hypervisor, the
> > current implementation only spins on long time (1 second) calls to
> > mdelay.  That brings a good effect, but the problem is the keyboard
> > LEDs don't blink at all on that situation.
> > 
> > This patch changes to call to panic_blink_enter() between every mdelay
> > and keeps blinking in spite of long spin timer mode.
> > 
> > The time to call to mdelay is now 100ms.  Even this change will keep
> > panic_timeout accuracy enough when running under a hypervisor.
> 
> Thaks for sticking with it - I think the code's a lot better now.  Are
> you happy with it?

Oh, yes.  That's very thoughtful of you.

Regards,
TAMUKI Shoichi
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