linux-kernel - [PATCH 57/79] [PATCH] call do_boot_cpu directly from native_cpu

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Date:	Wed, 19 Mar 2008 14:25:52 -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 57/79] [PATCH] call do_boot_cpu directly from native_cpu_up

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

We don't need __smp_prepare_cpu anymore.

Signed-off-by: Glauber Costa <gcosta@...hat.com>
---
 arch/x86/kernel/smpboot_32.c |   21 ++++++---------------
 1 files changed, 6 insertions(+), 15 deletions(-)

diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 5165b11..4ba5ab2 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -702,20 +702,6 @@ void cpu_exit_clear(void)
 }
 #endif
 
-static void __cpuinit __smp_prepare_cpu(int cpu)
-{
-	int	apicid;
-
-	apicid = per_cpu(x86_cpu_to_apicid, cpu);
-
-	/* init low mem mapping */
-	clone_pgd_range(swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS,
-			min_t(unsigned long, KERNEL_PGD_PTRS, USER_PGD_PTRS));
-	flush_tlb_all();
-
-	do_boot_cpu(apicid, cpu);
-}
-
 static int boot_cpu_logical_apicid;
 /* Where the IO area was mapped on multiquad, always 0 otherwise */
 void *xquad_portio;
@@ -872,7 +858,12 @@ int __cpuinit native_cpu_up(unsigned int cpu)
 
 	per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
 
-	__smp_prepare_cpu(cpu);
+	/* init low mem mapping */
+	clone_pgd_range(swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS,
+			min_t(unsigned long, KERNEL_PGD_PTRS, USER_PGD_PTRS));
+	flush_tlb_all();
+
+	do_boot_cpu(apicid, cpu);
 
 	/* In case one didn't come up */
 	if (!cpu_isset(cpu, cpu_callin_map)) {
-- 
1.5.0.6

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