From 25542c646afbf14c43fa7d2b443055cadb73b07a Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Tue, 15 Mar 2011 09:57:37 +0800 Subject: [PATCH] x86, tlb, UV: Do small micro-optimization for native_flush_tlb_others() native_flush_tlb_others() is called from: flush_tlb_current_task() flush_tlb_mm() flush_tlb_page() All these functions disable preemption explicitly, so we can use smp_processor_id() instead of get_cpu() and put_cpu(). Signed-off-by: Xiao Guangrong Cc: Cliff Wickman LKML-Reference: <4D7EC791.4040003@cn.fujitsu.com> Signed-off-by: Ingo Molnar --- arch/x86/mm/tlb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 55272d7c3b0b..d6c0418c3e47 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -208,11 +208,10 @@ void native_flush_tlb_others(const struct cpumask *cpumask, if (is_uv_system()) { unsigned int cpu; - cpu = get_cpu(); + cpu = smp_processor_id(); cpumask = uv_flush_tlb_others(cpumask, mm, va, cpu); if (cpumask) flush_tlb_others_ipi(cpumask, mm, va); - put_cpu(); return; } flush_tlb_others_ipi(cpumask, mm, va); -- 2.30.2