Re: [PATCH 9/9] x86/UV: Add ability to disable UV NMI handler

[Paul E. McKenney]

On Thu, Sep 12, 2013 at 08:48:33PM +0100, Hedi Berriche wrote:
> On Thu, Sep 12, 2013 at 19:59 Mike Travis wrote:
> | On 9/12/2013 10:27 AM, Paul E. McKenney wrote:
> |
> | > But what is it that you are looking for?  If you want to silence it
> | > completely, the rcu_cpu_stall_suppress boot/sysfs parameter is what
> | > you want to use.
> | 
> | We have by default rcutree.rcu_cpu_stall_suppress=1 on the kernel
> | cmdline.  I'll double check if it was set during my testing.
> 
> FWIW, for recent enough kernels the correct boot parameter is
> rcupdate.rcu_cpu_stall_suppress.
> 
> It used to be rcutree.rcu_cpu_stall_suppress, but that has changed after
> commit 6bfc09e.

Good point, Hedi!  That change happened when rcutiny gained RCU CPU
stall warning capability.

							Thanx, Paul

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