linux-kernel - [tip:x86/spinlocks] xen: Defer spinlock setup until boot CPU setup

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Date:	Sat, 10 Aug 2013 09:13:48 -0700
From:	tip-bot for Jeremy Fitzhardinge <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	konrad.wilk@...cle.com, jeremy@...p.org,
	raghavendra.kt@...ux.vnet.ibm.com, tglx@...utronix.de,
	hpa@...ux.intel.com
Subject: [tip:x86/spinlocks] xen:
  Defer spinlock setup until boot CPU setup

Commit-ID:  bf7aab3ad4b4364a293421d628a912a2153ee1ee
Gitweb:     http://git.kernel.org/tip/bf7aab3ad4b4364a293421d628a912a2153ee1ee
Author:     Jeremy Fitzhardinge <jeremy@...p.org>
AuthorDate: Fri, 9 Aug 2013 19:51:52 +0530
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Fri, 9 Aug 2013 07:53:18 -0700

xen: Defer spinlock setup until boot CPU setup

There's no need to do it at very early init, and doing it there
makes it impossible to use the jump_label machinery.

Signed-off-by: Jeremy Fitzhardinge <jeremy@...p.org>
Link: http://lkml.kernel.org/r/1376058122-8248-5-git-send-email-raghavendra.kt@linux.vnet.ibm.com
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Signed-off-by: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Acked-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 arch/x86/xen/smp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index ca92754..3b52d80 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -279,6 +279,7 @@ static void __init xen_smp_prepare_boot_cpu(void)
 
 	xen_filter_cpu_maps();
 	xen_setup_vcpu_info_placement();
+	xen_init_spinlocks();
 }
 
 static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
@@ -680,7 +681,6 @@ void __init xen_smp_init(void)
 {
 	smp_ops = xen_smp_ops;
 	xen_fill_possible_map();
-	xen_init_spinlocks();
 }
 
 static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
--
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