From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH v6 6/7] powerpc/mm: update radix__pte_update to not do full mm tlb flush
Date: Fri, 25 Nov 2016 21:32:56 +0530 [thread overview]
Message-ID: <20161125160257.9158-7-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <20161125160257.9158-1-aneesh.kumar@linux.vnet.ibm.com>
When we are updating pte, we just need to flush the tlb mapping for
that pte. Right now we do a full mm flush because we don't track page
size. Now that we have page size details in pte use that to do the
optimized flush
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/book3s/64/radix.h | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h
index 08eaceb430ee..c0d43766ec63 100644
--- a/arch/powerpc/include/asm/book3s/64/radix.h
+++ b/arch/powerpc/include/asm/book3s/64/radix.h
@@ -145,13 +145,7 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm,
* new value of pte
*/
new_pte = (old_pte | set) & ~clr;
-
- /*
- * For now let's do heavy pid flush
- * radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize);
- */
- radix__flush_tlb_mm(mm);
-
+ radix__flush_tlb_pte(old_pte, mm, addr);
__radix_pte_update(ptep, 0, new_pte);
} else
old_pte = __radix_pte_update(ptep, clr, set);
--
2.10.2
next prev parent reply other threads:[~2016-11-25 16:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-25 16:02 [PATCH v6 0/7] Radix pte update tlbflush optimizations Aneesh Kumar K.V
2016-11-25 16:02 ` [PATCH v6 1/7] powerpc/mm: Rename hugetlb-radix.h to hugetlb.h Aneesh Kumar K.V
2016-11-25 16:02 ` [PATCH v6 2/7] powerpc/mm/hugetlb: Handle hugepage size supported by hash config Aneesh Kumar K.V
2016-11-25 16:02 ` [PATCH v6 3/7] powerpc/mm: Introduce _PAGE_GIGANTIC and _PAGE_LARGE software pte bits Aneesh Kumar K.V
2016-11-25 16:02 ` [PATCH v6 4/7] powerpc/mm: Add radix__tlb_flush_pte Aneesh Kumar K.V
2016-11-25 16:02 ` [PATCH v6 5/7] powerpc/mm: update radix__ptep_set_access_flag to not do full mm tlb flush Aneesh Kumar K.V
2016-11-25 16:02 ` Aneesh Kumar K.V [this message]
2016-11-25 16:02 ` [PATCH v6 7/7] powerpc/mm: Batch tlb flush when invalidating pte entries Aneesh Kumar K.V
2016-11-26 13:44 ` [PATCH v6 0/7] Radix pte update tlbflush optimizations Aneesh Kumar K.V
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