linux-kernel - [PATCH] affinity is not defined in non-smp kernels

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Date:	Wed, 28 Feb 2007 16:17:22 +0900
From:	Fernando Luis Vázquez Cao 
	<fernando@....ntt.co.jp>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ebiederm@...ssion.com, ak@...e.de, akpm@...ux-foundation.org
Subject: [PATCH] affinity is not defined in non-smp kernels - x86_64

Initialize affinity only when building SMP kernels.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@....ntt.co.jp>
---

--- linux-2.6.21-rc2-dtt/arch/x86_64/kernel/io_apic.c	2007-03-06 15:20:14.000000000 +0900
+++ linux-2.6.21-rc2-kdump/arch/x86_64/kernel/io_apic.c	2007-03-06 15:48:52.000000000 +0900
@@ -832,7 +832,9 @@ static void setup_IO_APIC_irq(int apic, 
 	ioapic_write_entry(apic, pin, entry);
 
 	spin_lock_irqsave(&ioapic_lock, flags);
+#ifdef CONFIG_SMP
 	irq_desc[irq].affinity = TARGET_CPUS;
+#endif
 	spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 


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