HUGETLB_PAGE_SIZE_VARIABLE need not be defined for each individual platform subscribing it. Instead just make it generic.
Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org> Cc: Paul Mackerras <pau...@samba.org> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Christoph Hellwig <h...@lst.de> Cc: Christophe Leroy <christophe.le...@csgroup.eu> Cc: linux-i...@vger.kernel.org Cc: linuxppc-...@lists.ozlabs.org Cc: linux...@kvack.org Cc: linux-kernel@vger.kernel.org Suggested-by: Christoph Hellwig <h...@lst.de> Signed-off-by: Anshuman Khandual <anshuman.khand...@arm.com> --- 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.khand...@arm.com/ Changes in V3: - Dropped the bool desciption that enabled user selection - Dropped the dependency on HUGETLB_PAGE for HUGETLB_PAGE_SIZE_VARIABLE Changes in V2: https://patchwork.kernel.org/project/linux-mm/patch/1614661987-23881-1-git-send-email-anshuman.khand...@arm.com/ - 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.khand...@arm.com/ arch/ia64/Kconfig | 6 +----- arch/powerpc/Kconfig | 6 +----- mm/Kconfig | 7 +++++++ 3 files changed, 9 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 386ae12d8523..11fea95a1f2c 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -231,6 +231,7 @@ 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 @@ -415,11 +416,6 @@ 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..4413a69e7850 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -274,6 +274,13 @@ config ARCH_ENABLE_HUGEPAGE_MIGRATION config ARCH_ENABLE_THP_MIGRATION bool +config HUGETLB_PAGE_SIZE_VARIABLE + def_bool n + 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
