Re: [PATCH ftrace.git] Immedate Values Optimized Jump Fix

From: Mathieu Desnoyers
Date: Fri Jul 18 2008 - 14:31:39 EST

* Ingo Molnar (mingo@xxxxxxx) wrote:
> * Mathieu Desnoyers <compudj@xxxxxxxxxxxxxxxxxx> wrote:
> > Hi Ingo,
> >
> > This fix would apply to the ftrace tree which contains the jump-based
> > immediate values. I don't know if this tree is still under active
> > development, but I guess that it wouldn't hurt to fix it.
> >
> > Caused a kernel OOPS when loading the tracepoint probes once in a
> > while on a 8-way x86_64.
> We've still got tip/tracing/immediates, with these commits from you:
> $ git-log-line linus.. arch/x86/kernel/immediate.c
> ee563d6: immediate values: jump liveliness
> e26875a: Immediate Values - Jump
> 3fc8d03: Immediate Values - x86 Optimization NMI and MCE support
> ... but the topic is stalled right now, due to hpa having had
> objections. Have those concerns been resolved? (Peter Cc:-ed)
> i'd have applied this fix, but it does not apply. The first chunk seems
> already be present (in a different form), the second chunk looks much
> different.
> Ingo

Hrm, I've edited directly the immediate values: jump liveliness patches,
which explains why it does not apply. I'll try to unapply/reapply/fold
the patches and see what it gives.

Plus, I've noticed that the "Text Edit Lock" patches are not in the
immediates branch, thus it fails to compile. Immediate values depends on
the Text Edit Lock patches.


Mathieu Desnoyers
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