linux-kernel - Re: [PATCH v2 07/32] sparc: reuse asm-generic/barrier.h

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Date:	Thu, 31 Dec 2015 14:43:47 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	mst@...hat.com
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, arnd@...db.de,
	linux-arch@...r.kernel.org, andrew.cooper3@...rix.com,
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Subject: Re: [PATCH v2 07/32] sparc: reuse asm-generic/barrier.h

From: "Michael S. Tsirkin" <mst@...hat.com>
Date: Thu, 31 Dec 2015 21:06:38 +0200

> On sparc 64 bit dma_rmb, dma_wmb, smp_store_mb, smp_mb, smp_rmb,
> smp_wmb, read_barrier_depends and smp_read_barrier_depends match the
> asm-generic variants exactly. Drop the local definitions and pull in
> asm-generic/barrier.h instead.
> 
> nop uses __asm__ __volatile but is otherwise identical to
> the generic version, drop that as well.
> 
> This is in preparation to refactoring this code area.
> 
> Note: nop() was in processor.h and not in barrier.h as on other
> architectures. Nothing seems to depend on it being there though.
> 
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> Acked-by: Arnd Bergmann <arnd@...db.de>

Acked-by: David S. Miller <davem@...emloft.net>
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