linux-kernel - [PATCH 44/79] [PATCH] don't initialize sibling and core maps during preparation

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Date:	Wed, 19 Mar 2008 14:25:39 -0300
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, tglx@...utronix.de, mingo@...e.hu,
	ak@...e.de, Glauber Costa <gcosta@...hat.com>
Subject: [PATCH 44/79] [PATCH] don't initialize sibling and core maps during preparation

From: Glauber Costa <gcosta@...hat.com>

it is redundant, since it is already done by set_cpu_sibling_map()

Signed-off-by: Glauber Costa <gcosta@...hat.com>
---
 arch/x86/kernel/smpboot_32.c |   12 ------------
 1 files changed, 0 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index a350553..5cae17f 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -855,18 +855,6 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 			++kicked;
 	}
 
-	/*
-	 * construct cpu_sibling_map, so that we can tell sibling CPUs
-	 * efficiently.
-	 */
-	for_each_possible_cpu(cpu) {
-		cpus_clear(per_cpu(cpu_sibling_map, cpu));
-		cpus_clear(per_cpu(cpu_core_map, cpu));
-	}
-
-	cpu_set(0, per_cpu(cpu_sibling_map, 0));
-	cpu_set(0, per_cpu(cpu_core_map, 0));
-
 	smpboot_setup_io_apic();
 
 	setup_boot_clock();
-- 
1.5.0.6

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