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Subject[PATCH 45/52] use wait_for_init_deassert in x86_64
Date
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>
---
arch/x86/kernel/smpboot_64.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 9f4935e..4f6d976 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.)
--
1.5.0.6


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