Date: Tue, 8 Oct 2013 22:35:27 +0200
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
        x86@kernel.org, linux-kernel@vger.kernel.org,
        Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 6/6] x86: Allow disabling HW_BREAKPOINTS and PERF_EVENTS
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On Tue, Oct 08, 2013 at 10:05:21PM +0200, Peter Zijlstra wrote:
> On Tue, Oct 08, 2013 at 09:55:59PM +0200, Frederic Weisbecker wrote:
> > 1) make breakpoints independant from perf. The drawback is that we must then
> > add seperate hooks on context switch for ptrace breakpoints. OTOH we get
> > rid of the perf -> breakpoint -> perf circular dependency, which is the very
> > controversial thing.
> 
> we used to have this in __switch_to_xtra(), right?

Right.

And then it got replaced by perf events scheduling.
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