Messages in this thread | | | Date | Sat, 18 Aug 2012 12:59:08 +0800 | From | Fengguang Wu <> | Subject | Re: lockdep warning on rt_mutex_lock() |
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On Fri, Aug 17, 2012 at 07:44:37AM -0700, Paul E. McKenney wrote: > On Fri, Aug 17, 2012 at 10:02:40PM +0800, Fengguang Wu wrote: > > On Fri, Aug 17, 2012 at 06:43:28AM -0700, Paul E. McKenney wrote: > > > On Fri, Aug 17, 2012 at 06:06:35PM +0800, Fengguang Wu wrote: > > > > Greetings, > > > > > > > > FYI, a lockdep warning: > > > > > > Certainly looks problematic! > > > > > > Any hint as to what version of the kernel produced this splat? > > > (Yes, lazy of me to ask, I know, but I am not seeing it in my testing.) > > > > It happens on both 3.5.0 and 3.6-rc1. Will bisect (try older kernels) help? > > Bisect is handy for me :) > > Bisection would be very welcome!!! ;-)
The bisect result is...
commit 9e571a82f0cb205a65a0ea41657f19f22b7fabb8 Author: Paul E. McKenney <paul.mckenney@linaro.org> Date: Thu Sep 30 21:26:52 2010 -0700
rcu: add tracing for TINY_RCU and TINY_PREEMPT_RCU
Add tracing for the tiny RCU implementations, including statistics on boosting in the case of TINY_PREEMPT_RCU and RCU_BOOST.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Thanks, Fengguang
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