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    Subject[PATCH] x86_64: fix build without HOTPLUG_CPU (was Re: 2.6.19-rc6-mm1)
    On Thu, 23 Nov 2006, Reuben Farrelly wrote:

    > > http://userweb.kernel.org/~akpm/2.6.19-rc6-mm1/
    > arch/x86_64/kernel/vsyscall.c: In function 'vsyscall_init':
    > arch/x86_64/kernel/vsyscall.c:310: error: 'cpu_vsyscall_notifier' undeclared
    > (first use in this function)
    > arch/x86_64/kernel/vsyscall.c:310: error: (Each undeclared identifier is
    > reported only once
    > arch/x86_64/kernel/vsyscall.c:310: error: for each function it appears in.)
    > make[1]: *** [arch/x86_64/kernel/vsyscall.o] Error 1
    > make: *** [arch/x86_64/kernel] Error 2

    [PATCH] x86_64: fix build without HOTPLUG_CPU

    cpu_vsyscall_notifier() is defined only when CONFIG_HOTPLUG_CPU is
    defined.

    Signed-off-by: Jiri Kosina <jkosina@suse.cz>

    ---

    arch/x86_64/kernel/vsyscall.c | 2 ++
    1 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c
    index 3416462..e93ffcf 100644
    --- a/arch/x86_64/kernel/vsyscall.c
    +++ b/arch/x86_64/kernel/vsyscall.c
    @@ -307,7 +307,9 @@ #ifdef CONFIG_SYSCTL
    register_sysctl_table(kernel_root_table2, 0);
    #endif
    on_each_cpu(cpu_vsyscall_init, NULL, 0, 1);
    +#ifdef CONFIG_HOTPLUG_CPU
    hotcpu_notifier(cpu_vsyscall_notifier, 0);
    +#endif
    return 0;
    }

    --
    Jiri Kosina
    SUSE Labs

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