* Daniel Thompson <daniel.thomp...@linaro.org> wrote:
> On Thu, 2015-03-05 at 01:54 +0100, Ingo Molnar wrote:
> > * Daniel Thompson <daniel.thomp...@linaro.org> wrote:
> >
> > > Much of the code sitting in arch/x86/kernel/apic/hw_nmi.c to support
> > > safe all-cpu backtracing from NMI has been copied to printk.c to
> > > make it accessible to other architectures.
> > >
> > > Port the x86 NMI backtrace to the generic code.
> >
> > Is there any difference between the generic and the x86 code as they
> > stand today?
>
> Shouldn't be any user observable change but there are some changes,
> mostly due to review comments.
>
> 1. The seq_buf structures are initialized at boot and *after* they
> are consumed (originally they were initialized just before use).
>
> 2. The generic code doesn't maintain an equivalent of backtrace_mask
> (which was essentially a copy of cpus_online made when backtracing
> was requested) and instead iterates using for_each_possible_cpu()
> to initialize and dump the seq_buf:s.
Ok, I have no fundamental objections:
Acked-by: Ingo Molnar <mi...@kernel.org>
I suspect you want to carry the x86 bits yourself?
Thanks,
Ingo
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