linux-kernel - Re: [PATCH] ACPI: Unneccessary to scan the PCI bus already scanned.

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Date:	Mon, 3 Mar 2008 11:11:51 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Greg KH <gregkh@...e.de>, Muli Ben-Yehuda <muli@...ibm.com>,
	Zhao Yakui <yakui.zhao@...el.com>, lenb@...nel.org,
	linux-acpi@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ACPI: Unneccessary to scan the PCI bus already scanned.


i also had to hand-merge the x86.git#testing patch below - could you 
double-check that it's needed in this form?

	Ingo

----------->
Subject: x86/acpi: make dev_to_node return online node
From: Yinghai Lu <Yinghai.Lu@....COM>
Date: Wed, 20 Feb 2008 12:41:52 -0800

some numa system (with multi HT chains) may return node without ram. aka it
is not online. Try to get an online node, otherwise return -1

Signed-off-by: Yinghai Lu <yinghai.lu@....com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/pci/acpi.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux-x86.q/arch/x86/pci/acpi.c
===================================================================
--- linux-x86.q.orig/arch/x86/pci/acpi.c
+++ linux-x86.q/arch/x86/pci/acpi.c
@@ -213,6 +213,9 @@ struct pci_bus * __devinit pci_acpi_scan
 		set_mp_bus_to_node(busnum, node);
 	else
 		node = get_mp_bus_to_node(busnum);
+
+	if (node != -1 && !node_online(node))
+		node = -1;
 #endif
 
 	bus = pci_find_bus(domain, busnum);

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