The patch titled
Subject: mm: generalize HUGETLB_PAGE_SIZE_VARIABLE
has been added to the -mm tree. Its filename is
mm-generalize-hugetlb_page_size_variable.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-generalize-hugetlb_page_size_variable.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-generalize-hugetlb_page_size_variable.patch
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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm: generalize HUGETLB_PAGE_SIZE_VARIABLE
HUGETLB_PAGE_SIZE_VARIABLE need not be defined for each individual
platform subscribing it. Instead just make it generic.
Link: https://lkml.kernel.org/r/1614914928-22039-1-git-send-email-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Suggested-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> [powerpc]
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/ia64/Kconfig | 6 +-----
arch/powerpc/Kconfig | 6 +-----
mm/Kconfig | 7 +++++++
3 files changed, 9 insertions(+), 10 deletions(-)
--- a/arch/ia64/Kconfig~mm-generalize-hugetlb_page_size_variable
+++ a/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
--- a/arch/powerpc/Kconfig~mm-generalize-hugetlb_page_size_variable
+++ a/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
--- a/mm/Kconfig~mm-generalize-hugetlb_page_size_variable
+++ a/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
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
mm-generalize-hugetlb_page_size_variable.patch
