Hi, On Sun, Oct 28, 2012 at 12:36 AM, Kumar amit mehta <[email protected]> wrote: > Thank you Srivatsa. It seems that lockdep framework is enabled on my running > kernel. > > <snip> > amit@ubuntu:/boot$ egrep -i "debug_kernel|lockdep" config-3.2.0-29-generic-pae > CONFIG_LOCKDEP_SUPPORT=y > CONFIG_DEBUG_KERNEL=y
You'll need CONFIG_LOCKDEP=y as well. An easy way to configure lock debugging checks is to run 'make menuconfig' and enable the required options under the "Kernel hacking" section. Regards, Srivatsa S. Bhat > <snip> > > If above configuration is all that I need, then should I be seeing > warning/error > messages in kernel logs(/var/log/kern.log) when there is inconsistency in > locking ? To test my hypothesis, I modified my simple kernel module to > deliberately induce locking error (After initializing read-write semaphore, I > call > down_write() and do not free this semaphore lock by commenting out up_write() > invocation). But still I don't see any error or warning message trace in > kernel > logs, I think, I'm missing something. _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
