Unset LOCKDEP and TRACE_IRQFLAGS_SUPPORT

[vibnwis]

So what *exactly* happened when it failed to work? The patch didn't apply?
The kernel wouldn't compile?  won't boot? Boots but no realtime?  Any
error messages?

What suggested that TRACE_IRQFLAGS would make a difference?

Xenomai patching succeeded but when running one of is test apps, "latency"
showing
> > > > > > >> > 0"000.000| BUG in low_init(): [main] mlockall: Cannot
allocate
> > > > memory
And the mailing list member suggested the following

"The problematic option is CONFIG_TRACE_IRQFLAGS, not
> > CONFIG_CONTEXT_TRACKING, and you have it enabled, since without it,
> > you would not be able to enable CONFIG_LOCKDEP. Please disable
> > CONFIG_TRACE_IRQFLAGS. You will need to disable all the options
> > depending on that option, such as CONFIG_LOCKDEP."

First thing to do is to verify that you *really* need the patch at all.
95% of people who think they need special real-time patches don't actually
need them.  Linux already has fairly good soft real-time support, which
is good for most stuff.

Experimenting for automation and for educational purposes.
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