From: Ingo Molnar <mingo@elte.hu>
To: john stultz <johnstul@us.ibm.com>
Cc: dino@in.ibm.com, linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: IO-APIC problem with 2.6.14-rt9
Date: Fri, 11 Nov 2005 09:20:04 +0100 [thread overview]
Message-ID: <20051111082004.GA20977@elte.hu> (raw)
In-Reply-To: <20051111073841.GA16009@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> > Grumble. :( I was hoping to submit my tod code to Andrew tomorrow, but
> > this might block that.
>
> hm, ARCH_HAS_READ_CURRENT_TIMER is upstream already. I have not
> measured the udelay thing upstream, but i thought it would have the
> same issue. Does the GTOD code impact this code?
ah, i see - you changed __delay to always be loop-based. That is quite
incorrect.
but i think there is a generic way to solve this: just busy-poll
->read_cycles(). I.e. move __delay into the generic code too. This means
even more architecture-specific code would be consolidated, which is
always good.
Ingo
next prev parent reply other threads:[~2005-11-11 8:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-10 20:02 IO-APIC problem with 2.6.14-rt9 Dinakar Guniguntala
2005-11-10 20:02 ` Ingo Molnar
2005-11-10 20:30 ` Dinakar Guniguntala
2005-11-10 20:29 ` john stultz
2005-11-10 20:55 ` Dinakar Guniguntala
2005-11-10 21:04 ` Ingo Molnar
2005-11-10 21:42 ` john stultz
2005-11-11 7:38 ` Ingo Molnar
2005-11-11 8:20 ` Ingo Molnar [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-11-12 2:25 Pallipadi, Venkatesh
2005-11-12 2:34 ` john stultz
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