powerpc/mm/radix: Don't do page walk cache flush when doing full mm flush
For fullmm tlb flush, we do a flush with RIC_FLUSH_ALL which will invalidate all related caches (radix__tlb_flush()). Hence the pwc flush is not needed. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -129,6 +129,12 @@ void radix__local_flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr)
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{
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{
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unsigned long pid;
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unsigned long pid;
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struct mm_struct *mm = tlb->mm;
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struct mm_struct *mm = tlb->mm;
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/*
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* If we are doing a full mm flush, we will do a tlb flush
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* with RIC_FLUSH_ALL later.
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*/
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if (tlb->fullmm)
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return;
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preempt_disable();
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preempt_disable();
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@ -195,6 +201,12 @@ void radix__flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr)
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unsigned long pid;
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unsigned long pid;
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struct mm_struct *mm = tlb->mm;
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struct mm_struct *mm = tlb->mm;
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/*
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* If we are doing a full mm flush, we will do a tlb flush
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* with RIC_FLUSH_ALL later.
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*/
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if (tlb->fullmm)
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return;
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preempt_disable();
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preempt_disable();
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pid = mm->context.id;
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pid = mm->context.id;
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