Re: [PATCH] printk/tracing: Do not trace printk_nmi_enter()

[Steven Rostedt]

On Fri, 7 Sep 2018 15:45:32 +0200
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> Yes really, we should not muck with the IRQ state from NMI context.

Right, and we didn't. Your patch didn't change anything, but allow for
printk_nmi_enter/exit() to be traced by ftrace, but that's wrong to
begin with because it ftrace_nmi_enter() hasn't been called yet.

-- Steve