From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org
Cc: peterz@infradead.org, kaleshsingh@google.com,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
joel@joelfernandes.org, linuxppc-dev@lists.ozlabs.org
Subject: [RFC PATCH 6/6] powerpc/mm: Enable move pmd/pud
Date: Tue, 2 Feb 2021 14:41:16 +0530 [thread overview]
Message-ID: <20210202091116.196134-6-aneesh.kumar@linux.ibm.com> (raw)
In-Reply-To: <20210202091116.196134-1-aneesh.kumar@linux.ibm.com>
mremap HAVE_MOVE_PMD/PUD optimization time comparison for 1GB region:
1GB mremap - Source PTE-aligned, Destination PTE-aligned
mremap time: 1114318ns
1GB mremap - Source PMD-aligned, Destination PMD-aligned
mremap time: 1097715ns
1GB mremap - Source PUD-aligned, Destination PUD-aligned
mremap time: 26851ns
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
---
arch/powerpc/platforms/Kconfig.cputype | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 3ce907523b1e..2e666e569fdf 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -97,6 +97,8 @@ config PPC_BOOK3S_64
select PPC_HAVE_PMU_SUPPORT
select SYS_SUPPORTS_HUGETLBFS
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ select HAVE_MOVE_PMD
+ select HAVE_MOVE_PUD
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_SUPPORTS_NUMA_BALANCING
select IRQ_WORK
--
2.29.2
next prev parent reply other threads:[~2021-02-03 0:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 9:11 [RFC PATCH 1/6] selftest/mremap_test: Update the test to handle pagesize other than 4K Aneesh Kumar K.V
2021-02-02 9:11 ` [RFC PATCH 2/6] selftest/mremap_test: Avoid crash with static build Aneesh Kumar K.V
2021-02-02 9:11 ` [RFC PATCH 3/6] mm/mremap: Use pmd/pud_poplulate to update page table entries Aneesh Kumar K.V
2021-02-02 10:47 ` Peter Zijlstra
2021-02-02 14:50 ` Aneesh Kumar K.V
2021-02-02 9:11 ` [RFC PATCH 4/6] mm/mremap: Use mmu gather interface instead of flush_tlb_range Aneesh Kumar K.V
2021-02-02 9:11 ` [RFC PATCH 5/6] mm/mremap: Allow arch runtime override Aneesh Kumar K.V
2021-02-02 9:11 ` Aneesh Kumar K.V [this message]
2021-02-02 13:29 ` [RFC PATCH 1/6] selftest/mremap_test: Update the test to handle pagesize other than 4K Li Xinhai
2021-02-02 14:51 ` Aneesh Kumar K.V
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