Commit e8a72ffa authored May 02, 2007 by Keshavamurthy, Anil S Committed by Andi Kleen May 02, 2007

[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>

parent 141a892f

arch/i386/kernel/smp.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -359,10 +359,12 @@ void native_flush_tlb_others(const cpumask_t cpumaskp, struct mm_struct mm,
		BUG_ON(cpu_isset(smp_processor_id(), cpumask));
		BUG_ON(!mm);

		#ifdef CONFIG_HOTPLUG_CPU
		/* If a CPU which we ran on has gone down, OK. */
		cpus_and(cpumask, cpumask, cpu_online_map);
		if (cpus_empty(cpumask))
		if (unlikely(cpus_empty(cpumask)))
		return;
		#endif

		/*
		* i'm not happy about this global shared spinlock in the