linux-kernel - [PATCH] x86_64: not set boot cpu in cpu_online_map at smp_prepare_boot

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Date:	Sun, 27 Jan 2008 18:28:05 -0800
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86_64: not set boot cpu in cpu_online_map at
 smp_prepare_boot_cpu

[PATCH] x86_64: not set boot cpu in cpu_online_map at smp_prepare_boot_cpu

in init/main.c boot_cpu_init() does that before

Signed-off-by: Yinghai Lu <yinghai.lu@....com>

Index: linux-2.6/arch/x86/kernel/smpboot_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/smpboot_64.c
+++ linux-2.6/arch/x86/kernel/smpboot_64.c
@@ -921,7 +921,7 @@ void __init smp_prepare_cpus(unsigned in
 void __init smp_prepare_boot_cpu(void)
 {
 	int me = smp_processor_id();
-	cpu_set(me, cpu_online_map);
+	/* already set me in cpu_online_map in boot_cpu_init() */
 	cpu_set(me, cpu_callout_map);
 	per_cpu(cpu_state, me) = CPU_ONLINE;
 }
--
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