HUGETLB_PAGE_SIZE_VARIABLE need not be defined for each individual platform subscribing it. Instead just make it generic. Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: linux-ia64@xxxxxxxxxxxxxxx Cc: linuxppc-dev@xxxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Suggested-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx> --- This change was originally suggested in an earilier discussion. This applies on v5.12-rc1 and has been build tested on all applicable platforms i.e ia64 and powerpc. https://patchwork.kernel.org/project/linux-mm/patch/1613024531-19040-3-git-send-email-anshuman.khandual@xxxxxxx/ Changes in V2: - Added a description for HUGETLB_PAGE_SIZE_VARIABLE - Added HUGETLB_PAGE dependency while selecting HUGETLB_PAGE_SIZE_VARIABLE Changes in V1: https://patchwork.kernel.org/project/linux-mm/patch/1614577853-7452-1-git-send-email-anshuman.khandual@xxxxxxx/ arch/ia64/Kconfig | 6 +----- arch/powerpc/Kconfig | 6 +----- mm/Kconfig | 9 +++++++++ 3 files changed, 11 insertions(+), 10 deletions(-) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 2ad7a8d29fcc..dccf5bfebf48 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -32,6 +32,7 @@ config IA64 select TTY select HAVE_ARCH_TRACEHOOK select HAVE_VIRT_CPU_ACCOUNTING + select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_PENDING_IRQ if SMP @@ -82,11 +83,6 @@ config STACKTRACE_SUPPORT config GENERIC_LOCKBREAK def_bool n -config HUGETLB_PAGE_SIZE_VARIABLE - bool - depends on HUGETLB_PAGE - default y - config GENERIC_CALIBRATE_DELAY bool default y diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3778ad17f56a..3fdec3e53256 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -232,6 +232,7 @@ config PPC select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP + select HUGETLB_PAGE_SIZE_VARIABLE if PPC_BOOK3S_64 && HUGETLB_PAGE select MMU_GATHER_RCU_TABLE_FREE select MMU_GATHER_PAGE_SIZE select HAVE_REGS_AND_STACK_ACCESS_API @@ -416,11 +417,6 @@ config HIGHMEM source "kernel/Kconfig.hz" -config HUGETLB_PAGE_SIZE_VARIABLE - bool - depends on HUGETLB_PAGE && PPC_BOOK3S_64 - default y - config MATH_EMULATION bool "Math emulation" depends on 4xx || PPC_8xx || PPC_MPC832x || BOOKE diff --git a/mm/Kconfig b/mm/Kconfig index 24c045b24b95..64f1e0503e4f 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -274,6 +274,15 @@ config ARCH_ENABLE_HUGEPAGE_MIGRATION config ARCH_ENABLE_THP_MIGRATION bool +config HUGETLB_PAGE_SIZE_VARIABLE + bool "Allows dynamic pageblock_order" + def_bool n + depends on HUGETLB_PAGE + help + Allows the pageblock_order value to be dynamic instead of just standard + HUGETLB_PAGE_ORDER when there are multiple HugeTLB page sizes available + on a platform. + config CONTIG_ALLOC def_bool (MEMORY_ISOLATION && COMPACTION) || CMA -- 2.20.1
