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Date: Thu, 19 May 2011 00:33:12 -0500 From: Kumar Gala <galak@...nel.crashing.org> To: Benjamin Herrenschmidt <benh@...nel.crashing.org> Cc: Richard Cochran <richardcochran@...il.com>, linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org Subject: Re: powerpc: mpc85xx regression since 2.6.39-rc2, one cpu core lame On May 17, 2011, at 4:40 PM, Benjamin Herrenschmidt wrote: > On Tue, 2011-05-17 at 18:28 +0200, Richard Cochran wrote: >> Ben, >> >> Recent 2.6.39-rc kernels behave strangely on the Freescale dual core >> mpc8572 and p2020. There is a long pause (like 2 seconds) in the boot >> sequence after "mpic: requesting IPIs..." >> >> When the system comes up, only one core shows in /proc/cpuinfo. Later >> on, lots of messages appear like the following: >> >> INFO: task ksoftirqd/1:9 blocked for more than 120 seconds. >> >> I bisected [1] the problem to: >> >> commit c56e58537d504706954a06570b4034c04e5b7500 >> Author: Benjamin Herrenschmidt <benh@...nel.crashing.org> >> Date: Tue Mar 8 14:40:04 2011 +1100 >> >> powerpc/smp: Create idle threads on demand and properly reset them >> >> I don't see from that commit what had gone wrong. Perhaps you can >> help resolve this? > > Hrm, odd. Kumar, care to have a look ? That's what happens when you > don't get me HW to test with :-) I'm trying to work on it ;) - k -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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