From: Steve Capper <steve.capper@linaro.org>
To: linux-mm@kvack.org, x86@kernel.org, linux-arch@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: Michal Hocko <mhocko@suse.cz>, Ken Chen <kenchen@google.com>,
Mel Gorman <mgorman@suse.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
patches@linaro.org, Steve Capper <steve.capper@linaro.org>
Subject: [PATCH 10/11] ARM64: mm: Raise MAX_ORDER for 64KB pages and THP.
Date: Thu, 23 May 2013 18:07:57 +0100 [thread overview]
Message-ID: <1369328878-11706-11-git-send-email-steve.capper@linaro.org> (raw)
In-Reply-To: <1369328878-11706-1-git-send-email-steve.capper@linaro.org>
The buddy allocator has a default MAX_ORDER of 11, which is too
low to allocate enough memory for 512MB Transparent HugePages if
our base page size is 64KB.
This patch introduces MAX_ZONE_ORDER and sets it to 14 when 64KB
pages are used in conjuction with THP, otherwise the default value
of 11 is used.
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm64/Kconfig | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index cd6eca8..10607d6 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -191,6 +191,11 @@ config ARCH_WANT_HUGE_PMD_SHARE
source "mm/Kconfig"
+config FORCE_MAX_ZONEORDER
+ int
+ default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
+ default "11"
+
endmenu
menu "Boot options"
--
1.8.1.4
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next prev parent reply other threads:[~2013-05-23 17:08 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 17:07 [PATCH 00/11] HugeTLB and THP support for ARM64 Steve Capper
2013-05-23 17:07 ` [PATCH 01/11] mm: hugetlb: Copy huge_pmd_share from x86 to mm Steve Capper
2013-05-24 11:11 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 02/11] x86: mm: Remove x86 version of huge_pmd_share Steve Capper
2013-05-24 11:13 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 03/11] mm: hugetlb: Copy general hugetlb code from x86 to mm Steve Capper
2013-05-24 11:14 ` Catalin Marinas
2013-05-24 11:18 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 04/11] x86: mm: Remove general hugetlb code from x86 Steve Capper
2013-05-24 11:14 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 05/11] mm: thp: Correct the HPAGE_PMD_ORDER check Steve Capper
2013-05-24 11:18 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 06/11] ARM64: mm: Restore memblock limit when map_mem finished Steve Capper
2013-05-23 17:07 ` [PATCH 07/11] ARM64: mm: Make PAGE_NONE pages read only and no-execute Steve Capper
2013-05-24 11:21 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 08/11] ARM64: mm: Swap PTE_FILE and PTE_PROT_NONE bits Steve Capper
2013-05-23 17:07 ` [PATCH 09/11] ARM64: mm: HugeTLB support Steve Capper
2013-05-24 11:23 ` Catalin Marinas
2013-05-23 17:07 ` Steve Capper [this message]
2013-05-23 17:07 ` [PATCH 11/11] ARM64: mm: THP support Steve Capper
2013-06-11 9:07 ` [PATCH 00/11] HugeTLB and THP support for ARM64 Steve Capper
2013-06-12 8:25 ` Steve Capper
2013-06-13 21:20 ` Andrew Morton
2013-06-14 12:55 ` Steve Capper
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