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Date:   Wed, 26 Aug 2020 02:47:51 +0200
From:   Thomas Gleixner <>
To:     Peter Zijlstra <>,,,
Subject: Re: [PATCH v2 10/11] lockdep: Only trace IRQ edges

On Fri, Aug 21 2020 at 10:47, Peter Zijlstra wrote:
> Now, given that the only reason to use the raw_* variant is because you don't
> want tracing, A) seems like a weird option (although it can be done), so we
> pick B) and declare any code that ends up doing:
> 	raw_local_irq_save()
> 	local_irq_save()
> 	lockdep_assert_irqs_disabled();
> broken. AFAICT this problem has existed forever, the only reason it came
> up is because I changed IRQ tracing vs lockdep recursion and the first

Who is 'I'? I know you made that change and you also rewrote the
changelog, but I only figured that out after scrolling further down. As
this patch is authored by Nick, the above is simply inconsistent. Can we
please have just a reference to the commit which changed that code
instead of a puzzle?

Other than that:

Reviewed-by: Thomas Gleixner <>

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