[PATCH] i386: avoid checking for cpu gone when CONFIG_HOTPLUG_CPU not defined
Avoid checking for cpu gone in mm hot path when CONFIG_HOTPLUG_CPU is not defined. Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -359,10 +359,12 @@ void native_flush_tlb_others(const cpumask_t *cpumaskp, struct mm_struct *mm,
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BUG_ON(cpu_isset(smp_processor_id(), cpumask));
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BUG_ON(!mm);
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#ifdef CONFIG_HOTPLUG_CPU
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/* If a CPU which we ran on has gone down, OK. */
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cpus_and(cpumask, cpumask, cpu_online_map);
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if (cpus_empty(cpumask))
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if (unlikely(cpus_empty(cpumask)))
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return;
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#endif
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/*
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* i'm not happy about this global shared spinlock in the
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