From: Yisheng Xie <xieyisheng1@xxxxxxxxxx> Subject: mm/hugetlb: introduce ARCH_HAS_GIGANTIC_PAGE Avoid making ifdef get pretty unwieldy if many ARCHs support gigantic page. No functional change with this patch. Link: http://lkml.kernel.org/r/1475227569-63446-2-git-send-email-xieyisheng1@xxxxxxxxxx Signed-off-by: Yisheng Xie <xieyisheng1@xxxxxxxxxx> Suggested-by: Michal Hocko <mhocko@xxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Acked-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> Acked-by: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx> Cc: Hanjun Guo <guohanjun@xxxxxxxxxx> Cc: Will Deacon <will.deacon@xxxxxxx> Cc: Dave Hansen <dave.hansen@xxxxxxxxx> Cc: Sudeep Holla <sudeep.holla@xxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/s390/Kconfig | 1 + arch/x86/Kconfig | 1 + fs/Kconfig | 3 +++ mm/hugetlb.c | 2 +- 4 files changed, 6 insertions(+), 1 deletion(-) diff -puN arch/s390/Kconfig~mm-hugetlb-introduce-arch_has_gigantic_page arch/s390/Kconfig --- a/arch/s390/Kconfig~mm-hugetlb-introduce-arch_has_gigantic_page +++ a/arch/s390/Kconfig @@ -71,6 +71,7 @@ config S390 select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV select ARCH_HAS_SG_CHAIN select ARCH_HAS_UBSAN_SANITIZE_ALL diff -puN arch/x86/Kconfig~mm-hugetlb-introduce-arch_has_gigantic_page arch/x86/Kconfig --- a/arch/x86/Kconfig~mm-hugetlb-introduce-arch_has_gigantic_page +++ a/arch/x86/Kconfig @@ -28,6 +28,7 @@ config X86 select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_GIGANTIC_PAGE if X86_64 select ARCH_HAS_KCOV if X86_64 select ARCH_HAS_PMEM_API if X86_64 select ARCH_HAS_MMIO_FLUSH diff -puN fs/Kconfig~mm-hugetlb-introduce-arch_has_gigantic_page fs/Kconfig --- a/fs/Kconfig~mm-hugetlb-introduce-arch_has_gigantic_page +++ a/fs/Kconfig @@ -200,6 +200,9 @@ config HUGETLBFS config HUGETLB_PAGE def_bool HUGETLBFS +config ARCH_HAS_GIGANTIC_PAGE + bool + source "fs/configfs/Kconfig" source "fs/efivarfs/Kconfig" diff -puN mm/hugetlb.c~mm-hugetlb-introduce-arch_has_gigantic_page mm/hugetlb.c --- a/mm/hugetlb.c~mm-hugetlb-introduce-arch_has_gigantic_page +++ a/mm/hugetlb.c @@ -1022,7 +1022,7 @@ static int hstate_next_node_to_free(stru ((node = hstate_next_node_to_free(hs, mask)) || 1); \ nr_nodes--) -#if (defined(CONFIG_X86_64) || defined(CONFIG_S390)) && \ +#if defined(CONFIG_ARCH_HAS_GIGANTIC_PAGE) && \ ((defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || \ defined(CONFIG_CMA)) static void destroy_compound_gigantic_page(struct page *page, _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
