Re: [BUG] While changing the cpufreq governor, kernel hits a bugin workqueue.c
From: Nageswara R Sastry
Date: Fri Jun 27 2008 - 00:13:06 EST
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
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