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

[Daniel Thompson]

On 19/03/15 19:01, Steven Rostedt wrote:
> 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.

Agreed. I'll respin the patchset with the barrier removed.


Daniel.