linux-kernel - [PATCH -mm] IOAT: fix for UP use of cpu_physical

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Date:	Mon, 20 Aug 2007 13:29:08 -0700
From:	Shannon Nelson <shannon.nelson@...el.com>
To:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Cc:	chris.leech@...il.com, ak@...e.de, tony.luck@...el.com,
	shannon.nelson@...el.com
Subject: [PATCH -mm] IOAT: fix for UP use of cpu_physical_id()

Make sure we can use cpu_physical_id() even when compiled for
uni-processor.

Cc: "Luck, Tony" <tony.luck@...el.com>
Cc: Andi Kleen <ak@...e.de>
Cc: Chris Leech <chris.leech@...il.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Shannon Nelson <shannon.nelson@...el.com>
---

 drivers/dma/ioat_dca.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/dma/ioat_dca.c b/drivers/dma/ioat_dca.c
index c3a500b..b1af49c 100644
--- a/drivers/dma/ioat_dca.c
+++ b/drivers/dma/ioat_dca.c
@@ -25,6 +25,14 @@
 #include <linux/smp.h>
 #include <linux/interrupt.h>
 #include <linux/dca.h>
+
+// either a kernel change is needed, or we need something like this in kernel
+#ifndef CONFIG_SMP
+#include <asm/smp.h>
+#undef cpu_physical_id
+#define cpu_physical_id(cpu) (cpuid_ebx(1) >> 24)
+#endif
+
 #include "ioatdma.h"
 #include "ioatdma_registers.h"
 
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