Message-ID: <495AA4BB.8020903@hartkopp.net>
Date: Tue, 30 Dec 2008 23:46:19 +0100
From: Oliver Hartkopp <oliver@hartkopp.net>
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To: Ingo Molnar <mingo@elte.hu>, Peter Zijlstra <peterz@infradead.org>
CC: Thomas Gleixner <tglx@linutronix.de>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       David Miller <davem@davemloft.net>
Subject: Re: [RFC PATCH] hrtimer: removing all ur callback modes
References: <1227613431.4259.1537.camel@twins> <1228385830.5092.43.camel@twins> <493BB1EB.5000004@hartkopp.net> <493BC8A8.2030200@hartkopp.net> <1228731359.5778.18.camel@twins> <493E2725.7090305@hartkopp.net> <1228810331.12729.59.camel@twins> <20081209105902.GB21618@elte.hu>
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Ingo Molnar wrote:
> * Peter Zijlstra <peterz@infradead.org> wrote:
>
>   
>>> ps. What is the intended release for this hrtimer cleanup? 2.6.29?
>>>       
>> I think so, Thomas, Ingo?
>>     
>
> yes, 2.6.29.
>
> 	Ingo
>   

AFAICS the commit ca109491f612aab5c8152207631c0444f63da97f

"hrtimer: removing all ur callback modes" with "Impact: cleanup, move 
all hrtimer processing into hardirq context"

did not find it's way into linux-2.6.git - is there any reason for this?

I reworked some of my code in net/can/bcm.c so that it uses tasklets in 
the cases i needed the soft-irq context and therefore it can cope with 
the hrtimers running always in hard-irq context now.

I'll send a patch to Dave the next days after some more testing on your 
latest sched-devel -tip tree. It works fine so far. From my side you can 
go ahead with the hrtimer reduction to hard-irq context (for 2.6.29).

Regards,
Oliver

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