* Paul E. McKenney <paul...@linux.vnet.ibm.com> wrote:
> Hello, Ingo,
>
> Paul Gortmaker found some problems with no-CBs-CPU support in 3.8
> mainline, and kindly supplied fixes. The first problem is soft-lockup
> complaints that can occur on systems running with no-CBs CPUs that have
> long periods of time where RCU is completely idle, which can happen on
> some embedded systems. The second problem is a documentation error
> for the "rcutree.rcu_nocb_poll" boot parameter. In this case, Paul Gortmaker
> (rightly) noted that the need for "rcutree." was inconsistent with the
> "rcu_nocbs=<cpumap>" boot parameter. The fix therefore to make the boot
> parameter named "rcu_nocb_poll".
>
> These problems only affect kernels built with the new CONFIG_RCU_NOCB_CPU
> kernel parameter, but still should be fixed.
>
> These fixes are available in the git repository at:
> git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
> rcu/urgent
>
> Thanx, Paul
>
> ------------------>
> Paul Gortmaker (2):
> rcu: Prevent soft-lockup complaints about no-CBs CPUs
> rcu: Make rcu_nocb_poll an early_param instead of module_param
>
> Documentation/kernel-parameters.txt | 2 +-
> kernel/rcutree_plugin.h | 13 ++++++++++---
> 2 files changed, 11 insertions(+), 4 deletions(-)
Pulled, thanks a lot Paul!
Ingo
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