The patch titled
Subject: thp, x86: introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE
has been added to the -mm tree. Its filename is
thp-x86-introduce-have_arch_transparent_hugepage.patch
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------------------------------------------------------
From: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Subject: thp, x86: introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE
Cleanup patch in preparation for transparent hugepage support on s390.
Adding new architectures to the TRANSPARENT_HUGEPAGE config option can
make the "depends" line rather ugly, like "depends on (X86 || (S390 &&
64BIT)) && MMU".
This patch adds a HAVE_ARCH_TRANSPARENT_HUGEPAGE instead. x86 already has
MMU "def_bool y", so the MMU check is superfluous there and
HAVE_ARCH_TRANSPARENT_HUGEPAGE can be selected in arch/x86/Kconfig.
Signed-off-by: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Hillf Danton <dhillf@xxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/Kconfig | 3 +++
arch/x86/Kconfig | 1 +
mm/Kconfig | 2 +-
3 files changed, 5 insertions(+), 1 deletion(-)
diff -puN arch/Kconfig~thp-x86-introduce-have_arch_transparent_hugepage arch/Kconfig
--- a/arch/Kconfig~thp-x86-introduce-have_arch_transparent_hugepage
+++ a/arch/Kconfig
@@ -326,4 +326,7 @@ config HAVE_RCU_USER_QS
are already protected inside rcu_irq_enter/rcu_irq_exit() but
preemption or signal handling on irq exit still need to be protected.
+config HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ bool
+
source "kernel/gcov/Kconfig"
diff -puN arch/x86/Kconfig~thp-x86-introduce-have_arch_transparent_hugepage arch/x86/Kconfig
--- a/arch/x86/Kconfig~thp-x86-introduce-have_arch_transparent_hugepage
+++ a/arch/x86/Kconfig
@@ -83,6 +83,7 @@ config X86
select IRQ_FORCED_THREADING
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_BPF_JIT if X86_64
+ select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select CLKEVT_I8253
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
diff -puN mm/Kconfig~thp-x86-introduce-have_arch_transparent_hugepage mm/Kconfig
--- a/mm/Kconfig~thp-x86-introduce-have_arch_transparent_hugepage
+++ a/mm/Kconfig
@@ -318,7 +318,7 @@ config NOMMU_INITIAL_TRIM_EXCESS
config TRANSPARENT_HUGEPAGE
bool "Transparent Hugepage Support"
- depends on X86 && MMU
+ depends on HAVE_ARCH_TRANSPARENT_HUGEPAGE
select COMPACTION
help
Transparent Hugepages allows the kernel to use huge pages and
_
Patches currently in -mm which might be from gerald.schaefer@xxxxxxxxxx are
linux-next.patch
thp-x86-introduce-have_arch_transparent_hugepage.patch
thp-remove-assumptions-on-pgtable_t-type.patch
thp-introduce-pmdp_invalidate.patch
thp-make-madv_hugepage-check-for-mm-def_flags.patch
thp-s390-thp-splitting-backend-for-s390.patch
thp-s390-thp-pagetable-pre-allocation-for-s390.patch
thp-s390-disable-thp-for-kvm-host-on-s390.patch
thp-s390-architecture-backend-for-thp-on-s390.patch
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