Re: [PATCH 2/2] boot: add early NMI counter

[Fernando Luis VÃzquez Cao]

On 03/08/2012 01:50 PM, Eric W. Biederman wrote:
> Fernando Luis VÃzquez Cao<fernando@xxxxxxxxxxxxx>  writes:
>
> > Subject: [PATCH] boot: add early NMI counter
> >
> > From: Fernando Luis Vazquez Cao<fernando@xxxxxxxxxxxxx>
> >
> > We currently ignore early NMIs but it would be nice to be able to
> > know whether they actually occurred.
> >
> > This patch adds an early NMI counter and exports it trough
> > /proc/interrupts with the name of ENM (Early NMI).
> For a userspace interface I suspect we just want to dump the count
> into the NMI counter.
>
> It probably makes sense to have a separate variable in early boot like
> you do, but then about the time we setup the normal NMI handler move the
> NMI count over and possibly do something like reboot if that is our
> policy.

I am fine with either approach. I guess that is the x86 maintainers'
call. Ingo, Thomas, Peter, what do you think? Should I add a new
entry to /proc/interrupts or move over the early NMI count to the
existing per-cpu NMI counter?

Thanks,
Fernando
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