From: Glauber Costa <gcosta@redhat.com>
Date: Mon, 3 Mar 2008 17:13:13 +0000 (-0300)
Subject: x86: use wait_for_init_deassert in x86_64
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e90009bcc1137c51d677262417f16c00ad2ce9a9;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

x86: use wait_for_init_deassert in x86_64

wraps the busy loop for wait_for_init_deasserted() in a function,
so smp_callin in x86_64 looks like more i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 9f4935e70e72..4f6d9768648f 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -100,6 +100,13 @@ static void __cpuinit smp_store_cpu_info(int id)
 	print_cpu_info(c);
 }
 
+static inline void wait_for_init_deassert(atomic_t *deassert)
+{
+	while (!atomic_read(deassert))
+		cpu_relax();
+	return;
+}
+
 static atomic_t init_deasserted __cpuinitdata;
 
 /*
@@ -117,8 +124,7 @@ void __cpuinit smp_callin(void)
 	 * our local APIC.  We have to wait for the IPI or we'll
 	 * lock up on an APIC access.
 	 */
-	while (!atomic_read(&init_deasserted))
-		cpu_relax();
+	wait_for_init_deassert(&init_deasserted);
 
 	/*
 	 * (This works even if the APIC is not enabled.)