Messages in this thread Patch in this message | | | Date | Fri, 21 Jan 2011 15:29:54 -0800 | From | Yinghai Lu <> | Subject | [PATCH] x86: Don't copy per_cpu cpuinfo for BSP two times |
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smp_store_cpu_info(0) will do that.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- arch/x86/kernel/smpboot.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
Index: linux-2.6/arch/x86/kernel/smpboot.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/smpboot.c +++ linux-2.6/arch/x86/kernel/smpboot.c @@ -1071,13 +1071,13 @@ void __init native_smp_prepare_cpus(unsi preempt_disable(); smp_cpu_index_default(); - memcpy(__this_cpu_ptr(&cpu_info), &boot_cpu_data, sizeof(cpu_info)); - cpumask_copy(cpu_callin_mask, cpumask_of(0)); - mb(); + /* * Setup boot CPU information */ smp_store_cpu_info(0); /* Final full version of the data */ + cpumask_copy(cpu_callin_mask, cpumask_of(0)); + mb(); #ifdef CONFIG_X86_32 boot_cpu_logical_apicid = logical_smp_processor_id(); #endif
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