From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 00/25] mm: Preemptibility -v7
Date: Tue, 25 Jan 2011 20:28:53 +0100
Message-ID: <1295983733.28776.1072.camel@laptop>
References: <20110125173111.720927511@chello.nl>
	 <20110125183240.GA31346@merkur.ravnborg.org>
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To: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>, Avi Kivity <avi@redhat.com>, Thomas Gleixner <tglx@linutronix.de>, Rik van Riel <riel@redhat.com>, Ingo Molnar <mingo@elte.hu>, akpm@linux-foundation.org, Linus Torvalds <torvalds@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Benjamin Herrenschmidt <benh@kernel.crashing.org>, David Miller <davem@davemloft.net>, Hugh Dickins <hugh.dickins@tiscali.co.uk>, Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@kernel.dk>, Paul McKenney <paulmck@linux.vnet.ibm.com>, Yanmin Zhang <yanmin_zhang@linux.intel.com>
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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?
>=20
> A quick grep showed up only this in sparc32 specific files:
>=20
> mm/init_32.c:DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
>=20
> 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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Subject: Re: [PATCH 00/25] mm: Preemptibility -v7
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
In-Reply-To: <20110125183240.GA31346@merkur.ravnborg.org>
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	 <20110125183240.GA31346@merkur.ravnborg.org>
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Date: Tue, 25 Jan 2011 20:28:53 +0100
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To: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>, Avi Kivity <avi@redhat.com>, Thomas Gleixner <tglx@linutronix.de>, Rik van Riel <riel@redhat.com>, Ingo Molnar <mingo@elte.hu>, akpm@linux-foundation.org, Linus Torvalds <torvalds@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Benjamin Herrenschmidt <benh@kernel.crashing.org>, David Miller <davem@davemloft.net>, Hugh Dickins <hugh.dickins@tiscali.co.uk>, Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@kernel.dk>, Paul McKenney <paulmck@linux.vnet.ibm.com>, Yanmin Zhang <yanmin_zhang@linux.intel.com>
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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.