From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Paul Mundt <lethal@linux-sh.org>
Cc: linux-arch@vger.kernel.org, Andrew Morton <akpm@osdl.org>
Subject: Re: Remaining arch problems in cpu_idle
Date: Wed, 29 Jun 2005 20:20:43 +1000 [thread overview]
Message-ID: <42C275FB.40209@yahoo.com.au> (raw)
In-Reply-To: <20050629101145.GB2694@linux-sh.org>
Paul Mundt wrote:
> On Wed, Jun 29, 2005 at 07:09:38PM +1000, Nick Piggin wrote:
>>Now this might introduce some power and heat penalty. What's more,
>>your race isn't a fatal one: in the worst case, it should just
>>stall until the next timer interrupt (aside, that might be fatal
>>with a tickless kernel).
>>
>
> After incorporating your changes, how about this?
>
So, just ignore the race, remove the irq disabling completely?
(with the hlt_counter fallback for busy waiting). If you're
happy with that then I think it looks good. Thanks Paul.
I'll also update the Documentation/ file to point out that such
a race isn't fatal.
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
next prev parent reply other threads:[~2005-06-29 10:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-29 7:06 Remaining arch problems in cpu_idle Nick Piggin
2005-06-29 8:00 ` Paul Mundt
2005-06-29 9:09 ` Nick Piggin
2005-06-29 10:11 ` Paul Mundt
2005-06-29 10:20 ` Nick Piggin [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-06-29 21:51 Luck, Tony
2005-06-29 23:38 ` Nick Piggin
2005-06-29 23:46 Luck, Tony
2005-06-29 23:55 ` Nick Piggin
2005-06-30 0:07 Luck, Tony
2005-06-30 0:17 ` Nick Piggin
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