linux-kernel - Re: [PATCH -v4 1/2] lib, Make gen

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Date:	Thu, 18 Nov 2010 09:57:54 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Paul Mundt <lethal@...ux-sh.org>
Cc:	Huang Ying <ying.huang@...el.com>,
	huang ying <huang.ying.caritas@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Len Brown <lenb@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: Re: [PATCH -v4 1/2] lib, Make gen_pool memory allocator lockless

On Thu, 2010-11-18 at 17:43 +0900, Paul Mundt wrote:
> 
> The only cause for concern really is SH-2A which supports hardware
> breakpoints (and perf events by proxy) but doesn't contain a PMU, and
> only uses an IRQs disabled cmpxchg for the moment. It also supports
> ftrace. I suppose I'll need to come up with a hack for this case.. 

Well, as long as it doesn't actually have NMIs it doesn't matter.. If it
does and they're actually used by linux, then yes that needs fixing.
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