Re: [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@xxxxxxxxxx> 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.
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