linux-kernel - Re: [patch 1/5] avoid tlb gather restarts.

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Message-Id: <20070715232031.5479614e.akpm@linux-foundation.org>
Date:	Sun, 15 Jul 2007 23:20:31 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>
Cc:	hugh@...itas.com, peterz@...radead.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch 1/5] avoid tlb gather restarts.

On Tue, 03 Jul 2007 13:18:23 +0200 Martin Schwidefsky <schwidefsky@...ibm.com> wrote:

> From: Martin Schwidefsky <schwidefsky@...ibm.com>
> 
> If need_resched() is false in the inner loop of unmap_vmas it is
> unnecessary to do a full blown tlb_finish_mmu / tlb_gather_mmu for
> each ZAP_BLOCK_SIZE ptes. Do a tlb_flush_mmu() instead. That gives
> architectures with a non-generic tlb flush implementation room for
> optimization. The tlb_flush_mmu primitive is a available with the
> generic tlb flush code, the ia64_tlb_flush_mm needs to be renamed
> and a dummy function is added to arm and arm26.
> 
> Signed-off-by: Martin Schwidefsky <schwidefsky@...ibm.com>
> ---
> 
>  include/asm-arm/tlb.h   |    5 +++++
>  include/asm-arm26/tlb.h |    5 +++++
>  include/asm-ia64/tlb.h  |    6 +++---
>  mm/memory.c             |   16 ++++++----------
>  4 files changed, 19 insertions(+), 13 deletions(-)

sparc64 broke:

mm/memory.c: In function `unmap_vmas':
mm/memory.c:862: error: too many arguments to function `tlb_flush_mmu'

grep, please.
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