The patch titled
Subject: mm/hugetlb: introduce ARCH_HAS_GIGANTIC_PAGE
has been added to the -mm tree. Its filename is
mm-hugetlb-introduce-arch_has_gigantic_page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-introduce-arch_has_gigantic_page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-introduce-arch_has_gigantic_page.patch
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------------------------------------------------------
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>
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_HAVE_NMI_SAFE_CMPXCHG
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
@@ -199,6 +199,9 @@ 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,
_
Patches currently in -mm which might be from xieyisheng1@xxxxxxxxxx are
mm-page_isolation-fix-typo-paes-pages.patch
mm-hugetlb-introduce-arch_has_gigantic_page.patch
arm64-kconfig-select-gigantic-page.patch
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