linux-kernel - Re: [PATCH 00/25] mm: Preemptibility -v7

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Message-ID: <1295983733.28776.1072.camel@laptop>
Date:	Tue, 25 Jan 2011 20:28:53 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Avi Kivity <avi@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Rik van Riel <riel@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	akpm@...ux-foundation.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-mm@...ck.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	David Miller <davem@...emloft.net>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Mel Gorman <mel@....ul.ie>, Nick Piggin <npiggin@...nel.dk>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Yanmin Zhang <yanmin_zhang@...ux.intel.com>
Subject: Re: [PATCH 00/25] mm: Preemptibility -v7

On Tue, 2011-01-25 at 19:32 +0100, Sam Ravnborg wrote:

> Foregive me my ignorance..
> Why is this relevant for sparc64 but not for sparc32?
> 
> A quick grep showed up only this in sparc32 specific files:
> 
> mm/init_32.c:DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
> 
> Maybe this is just something sparc32 does not support?

sparc32 uses include/asm-generic/tlb.h, whereas sparc64 implements its
own variant.
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