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Date: Mon, 11 Aug 2008 12:27:40 -0700 From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: David Witbrodt <dawitbro@...global.net> Cc: Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org, Yinghai Lu <yhlu.kernel@...il.com>, Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com>, netdev <netdev@...r.kernel.org> Subject: Re: [PATCH diagnostic] Re: HPET regression in 2.6.26 versus 2.6.25 -- RCU problem On Mon, Aug 11, 2008 at 11:22:21AM -0700, David Witbrodt wrote: > > > > > Well, I was hoping to see something interesting. I ran it with parameters > > > "debug initcall_debug", and it locked up at the same place. I let it for > > > 15 minutes, in case of some delayed reaction. Nada. > > > > Interesting. The causes could be: > > > > o Scheduling-clock interrupts aren't happening, as Ingo suggested. > > Does anyone have a short answer to this question: Were the changes between > 2.6.25 and 2.6.26 so major that interrupts are NOW being used that were not > being used before? Not that I am aware of, but I must defer to others who know more about Linux's timer interrupts than do I. Thanx, Paul > Again, I don't even pretend to understand the kernel's inner workings, but > 2.6.25 _did_ work on this hardware... and with HPET enabled. > > > DW -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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