[PATCH 2/6] powerpc/mm: Avoid double irq save/restore in activate_mm

Benjamin Herrenschmidt benh at kernel.crashing.org
Mon Jul 24 14:27:59 AEST 2017


It calls switch_mm() which already does the irq save/restore
these days.

Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
---
 arch/powerpc/include/asm/mmu_context.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
index 603b0e5cdec0..ed9a36ee3107 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -158,11 +158,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
  */
 static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
 {
-	unsigned long flags;
-
-	local_irq_save(flags);
 	switch_mm(prev, next, current);
-	local_irq_restore(flags);
 }
 
 /* We don't currently use enter_lazy_tlb() for anything */
-- 
2.13.3



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