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    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@goop.org>
    AuthorDate: Fri, 9 Aug 2013 19:51:52 +0530
    Committer: H. Peter Anvin <hpa@linux.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@goop.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@oracle.com>
    Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
    Acked-by: Ingo Molnar <mingo@kernel.org>
    Signed-off-by: H. Peter Anvin <hpa@linux.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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