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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org
Cc: kaleshsingh@google.com, npiggin@gmail.com,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
	joel@joelfernandes.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v4 9/9] powerpc/mm: Enable move pmd/pud
Date: Wed, 14 Apr 2021 14:29:15 +0530
Message-ID: <20210414085915.301189-10-aneesh.kumar@linux.ibm.com> (raw)
In-Reply-To: <20210414085915.301189-1-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:      1127034ns
1GB mremap - Source PMD-aligned, Destination PMD-aligned
  mremap time:       508817ns
1GB mremap - Source PUD-aligned, Destination PUD-aligned
  mremap time:        23046ns

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
-- 
2.30.2


      parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14  8:59 [PATCH v4 0/9] Speedup mremap on ppc64 Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 1/9] selftest/mremap_test: Update the test to handle pagesize other than 4K Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 2/9] selftest/mremap_test: Avoid crash with static build Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 3/9] mm/mremap: Use pmd/pud_poplulate to update page table entries Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 4/9] powerpc/mm/book3s64: Fix possible build error Aneesh Kumar K.V
2021-04-20  3:43   ` Michael Ellerman
2021-04-14  8:59 ` [PATCH v4 5/9] powerpc/mm/book3s64: Update tlb flush routines to take a page walk cache flush argument Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 6/9] mm/mremap: Use range flush that does TLB and page walk cache flush Aneesh Kumar K.V
2021-04-20  3:47   ` Michael Ellerman
2021-04-20  4:17     ` Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 7/9] mm/mremap: Move TLB flush outside page table lock Aneesh Kumar K.V
2021-04-14  8:59 ` [PATCH v4 8/9] mm/mremap: Allow arch runtime override Aneesh Kumar K.V
2021-04-20  3:52   ` Michael Ellerman
2021-04-20  4:30     ` Aneesh Kumar K.V
2021-04-14  8:59 ` Aneesh Kumar K.V [this message]

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