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Message-ID: <48646899.10407@linux.vnet.ibm.com> Date: Fri, 27 Jun 2008 09:42:09 +0530 From: Nageswara R Sastry <rnsastry@...ux.vnet.ibm.com> To: Johannes Weiner <hannes@...urebad.de> CC: linux-kernel@...r.kernel.org, balbir@...ux.vnet.ibm.com, ego@...ux.vnet.ibm.com, svaidy@...ux.vnet.ibm.com, davej@...emonkey.org.uk Subject: Re: [BUG] While changing the cpufreq governor, kernel hits a bug in workqueue.c Nageswara R Sastry wrote: Hi, >> ======================================================= >> [ INFO: possible circular locking dependency detected ] >> 2.6.25.7.cpufreq_patch #2 >> ------------------------------------------------------- [...] > While running the script I observed no stack trace but sysfs hang for a > particular file like scaling_governor under cpufreq for a particular cpu > (this cpu is varying). In the following run I experienced with cpu4. > > cat /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor > > The above command is not giving any result and it won't be coming out > after pressing ctrl+c or ctrl+z Applied both the patches and it seems working fine - no stack trace, but the above "mentioned circular locking dependency and sysfs file hang" are existing. Thanks Regards R.Nageswara Sastry -- 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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