Commit 15626062 authored by Gerald Schaefer's avatar Gerald Schaefer Committed by Linus Torvalds

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: default avatarGerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ca42b26a
...@@ -313,4 +313,7 @@ config HAVE_IRQ_TIME_ACCOUNTING ...@@ -313,4 +313,7 @@ config HAVE_IRQ_TIME_ACCOUNTING
Archs need to ensure they use a high enough resolution clock to Archs need to ensure they use a high enough resolution clock to
support irq time accounting and then call enable_sched_clock_irqtime(). support irq time accounting and then call enable_sched_clock_irqtime().
config HAVE_ARCH_TRANSPARENT_HUGEPAGE
bool
source "kernel/gcov/Kconfig" source "kernel/gcov/Kconfig"
...@@ -88,6 +88,7 @@ config X86 ...@@ -88,6 +88,7 @@ config X86
select IRQ_FORCED_THREADING select IRQ_FORCED_THREADING
select USE_GENERIC_SMP_HELPERS if SMP select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_BPF_JIT if X86_64 select HAVE_BPF_JIT if X86_64
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select CLKEVT_I8253 select CLKEVT_I8253
select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP select GENERIC_IOMAP
......
...@@ -318,7 +318,7 @@ config NOMMU_INITIAL_TRIM_EXCESS ...@@ -318,7 +318,7 @@ config NOMMU_INITIAL_TRIM_EXCESS
config TRANSPARENT_HUGEPAGE config TRANSPARENT_HUGEPAGE
bool "Transparent Hugepage Support" bool "Transparent Hugepage Support"
depends on X86 && MMU depends on HAVE_ARCH_TRANSPARENT_HUGEPAGE
select COMPACTION select COMPACTION
help help
Transparent Hugepages allows the kernel to use huge pages and Transparent Hugepages allows the kernel to use huge pages and
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment