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[RFC,6/6] powerpc/mm: Enable move pmd/pud

Message ID 20210202091116.196134-6-aneesh.kumar@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series [RFC,1/6] selftest/mremap_test: Update the test to handle pagesize other than 4K | expand

Commit Message

Aneesh Kumar K.V Feb. 2, 2021, 9:11 a.m. UTC 
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(+)
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Patch

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