Commit d2883fa1 authored Jul 26, 2017 by John David Anglin Committed by Helge Deller Aug 22, 2017

parisc: Optimize switch_mm



We only need to switch contexts when prev != next, and we don't need to
disable interrupts to do the check.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

parent 42593e70

arch/parisc/include/asm/mmu_context.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -63,6 +63,9 @@ static inline void switch_mm(struct mm_struct *prev,
		{
		unsigned long flags;

		if (prev == next)
		return;

		local_irq_save(flags);
		switch_mm_irqs_off(prev, next, tsk);
		local_irq_restore(flags);

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