Re: [PATCH v3] printk: Add console owner and waiter logic to load balance console writes

[Steven Rostedt]

On Fri, 3 Nov 2017 07:54:04 -0400
Steven Rostedt <rost...@goodmis.org> wrote:

> The new waiter gets set only if there isn't already a waiter *and*
> there is an owner that is not current (and with the printk_safe_enter I
> don't think that is even needed).
> 
> +                             while (!READ_ONCE(console_waiter))
> +                                     cpu_relax();

I still need to fix the patch. I cut and pasted the bad version. This
should have been:

        while (READ_ONCE(console_waiter))
                cpu_relax();

-- Steve