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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	npiggin@gmail.com, kaleshsingh@google.com,
	joel@joelfernandes.org,
	"Kirill A . Shutemov" <kirill@shutemov.name>,
	linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v8 3/3] powerpc/mm: Enable HAVE_MOVE_PMD support
Date: Wed, 16 Jun 2021 10:27:35 +0530	[thread overview]
Message-ID: <20210616045735.374532-4-aneesh.kumar@linux.ibm.com> (raw)
In-Reply-To: <20210616045735.374532-1-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:      2292772ns
1GB mremap - Source PMD-aligned, Destination PMD-aligned
  mremap time:      1158928ns
1GB mremap - Source PUD-aligned, Destination PUD-aligned
  mremap time:        63886ns

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 f998e655b570..be8ceb5bece4 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -101,6 +101,8 @@ config PPC_BOOK3S_64
 	select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
 	select ARCH_SUPPORTS_HUGETLBFS
 	select ARCH_SUPPORTS_NUMA_BALANCING
+	select HAVE_MOVE_PMD
+	select HAVE_MOVE_PUD
 	select IRQ_WORK
 	select PPC_MM_SLICES
 	select PPC_HAVE_KUEP
-- 
2.31.1


      parent reply	other threads:[~2021-06-16  4:59 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16  4:57 [PATCH v8 0/3] Speedup mremap on ppc64 Aneesh Kumar K.V
2021-06-16  4:57 ` [PATCH v8 1/3] mm/mremap: Allow arch runtime override Aneesh Kumar K.V
2021-06-16  4:57 ` [PATCH v8 2/3] powerpc/book3s64/mm: Update flush_tlb_range to flush page walk cache Aneesh Kumar K.V
2021-06-16  4:57 ` Aneesh Kumar K.V [this message]

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