[RFC PATCH 2/7] printk: Simple implementation for NMI backtracing

[Steven Rostedt]

On Thu, 19 Mar 2015 18:48:10 +0000
Daniel Thompson <daniel.thompson at linaro.org> wrote:
\
> The barrier was not intended to have anything to do with put_cpu() 
> either though since the barrier was added before put_cpu() arrived:
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=554ec063982752e9a569ab9189eeffa3d96731b2
> 
> There's nothing in the commit comment explaining the barrier and I 
> really can't see what it is for.
> 

Looks like it wasn't needed then either.

-- Steve