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Message-Id: <87y35iovvg.fsf@linux.ibm.com>
Date: Thu, 14 Mar 2019 11:11:55 +0530
From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
To: Alexandre Ghiti <alex@...ti.fr>,
Andrew Morton <akpm@...ux-foundation.org>,
Vlastimil Babka <vbabka@...e.cz>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>,
Martin Schwidefsky <schwidefsky@...ibm.com>,
Heiko Carstens <heiko.carstens@...ibm.com>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Rich Felker <dalias@...c.org>,
"David S . Miller" <davem@...emloft.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
"H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Mike Kravetz <mike.kravetz@...cle.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
linux-mm@...ck.org
Cc: Alexandre Ghiti <alex@...ti.fr>
Subject: Re: [PATCH v6 3/4] mm: Simplify MEMORY_ISOLATION && COMPACTION || CMA into CONTIG_ALLOC
Alexandre Ghiti <alex@...ti.fr> writes:
> This condition allows to define alloc_contig_range, so simplify
> it into a more accurate naming.
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@...ux.ibm.com>
>
> Suggested-by: Vlastimil Babka <vbabka@...e.cz>
> Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
> Acked-by: Vlastimil Babka <vbabka@...e.cz>
> ---
> arch/arm64/Kconfig | 2 +-
> arch/powerpc/platforms/Kconfig.cputype | 2 +-
> arch/s390/Kconfig | 2 +-
> arch/sh/Kconfig | 2 +-
> arch/sparc/Kconfig | 2 +-
> arch/x86/Kconfig | 2 +-
> arch/x86/mm/hugetlbpage.c | 2 +-
> include/linux/gfp.h | 2 +-
> mm/Kconfig | 3 +++
> mm/page_alloc.c | 3 +--
> 10 files changed, 12 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index a4168d366127..091a513b93e9 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -18,7 +18,7 @@ config ARM64
> select ARCH_HAS_FAST_MULTIPLIER
> select ARCH_HAS_FORTIFY_SOURCE
> select ARCH_HAS_GCOV_PROFILE_ALL
> - select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
> + select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC
> select ARCH_HAS_KCOV
> select ARCH_HAS_MEMBARRIER_SYNC_CORE
> select ARCH_HAS_PTE_SPECIAL
> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> index 8c7464c3f27f..f677c8974212 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -319,7 +319,7 @@ config ARCH_ENABLE_SPLIT_PMD_PTLOCK
> config PPC_RADIX_MMU
> bool "Radix MMU Support"
> depends on PPC_BOOK3S_64
> - select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
> + select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC
> default y
> help
> Enable support for the Power ISA 3.0 Radix style MMU. Currently this
> diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> index ed554b09eb3f..1c57b83c76f5 100644
> --- a/arch/s390/Kconfig
> +++ b/arch/s390/Kconfig
> @@ -69,7 +69,7 @@ config S390
> select ARCH_HAS_ELF_RANDOMIZE
> select ARCH_HAS_FORTIFY_SOURCE
> select ARCH_HAS_GCOV_PROFILE_ALL
> - select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
> + select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC
> select ARCH_HAS_KCOV
> select ARCH_HAS_PTE_SPECIAL
> select ARCH_HAS_SET_MEMORY
> diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
> index 299a17bed67c..c7266302691c 100644
> --- a/arch/sh/Kconfig
> +++ b/arch/sh/Kconfig
> @@ -53,7 +53,7 @@ config SUPERH
> select HAVE_FUTEX_CMPXCHG if FUTEX
> select HAVE_NMI
> select NEED_SG_DMA_LENGTH
> - select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
> + select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC
>
> help
> The SuperH is a RISC processor targeted for use in embedded systems
> diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
> index 0b7f0e0fefa5..ca33c80870e2 100644
> --- a/arch/sparc/Kconfig
> +++ b/arch/sparc/Kconfig
> @@ -90,7 +90,7 @@ config SPARC64
> select ARCH_CLOCKSOURCE_DATA
> select ARCH_HAS_PTE_SPECIAL
> select PCI_DOMAINS if PCI
> - select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
> + select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC
>
> config ARCH_DEFCONFIG
> string
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 68261430fe6e..8ba90f3e0038 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -23,7 +23,7 @@ config X86_64
> def_bool y
> depends on 64BIT
> # Options that are inherently 64-bit kernel only:
> - select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
> + select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC
> select ARCH_SUPPORTS_INT128
> select ARCH_USE_CMPXCHG_LOCKREF
> select HAVE_ARCH_SOFT_DIRTY
> diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
> index 92e4c4b85bba..fab095362c50 100644
> --- a/arch/x86/mm/hugetlbpage.c
> +++ b/arch/x86/mm/hugetlbpage.c
> @@ -203,7 +203,7 @@ static __init int setup_hugepagesz(char *opt)
> }
> __setup("hugepagesz=", setup_hugepagesz);
>
> -#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
> +#ifdef CONFIG_CONTIG_ALLOC
> static __init int gigantic_pages_init(void)
> {
> /* With compaction or CMA we can allocate gigantic pages at runtime */
> diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> index 5f5e25fd6149..1f1ad9aeebb9 100644
> --- a/include/linux/gfp.h
> +++ b/include/linux/gfp.h
> @@ -585,7 +585,7 @@ static inline bool pm_suspended_storage(void)
> }
> #endif /* CONFIG_PM_SLEEP */
>
> -#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
> +#ifdef CONFIG_CONTIG_ALLOC
> /* The below functions must be run on a range from a single zone. */
> extern int alloc_contig_range(unsigned long start, unsigned long end,
> unsigned migratetype, gfp_t gfp_mask);
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 25c71eb8a7db..137eadc18732 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -258,6 +258,9 @@ config ARCH_ENABLE_HUGEPAGE_MIGRATION
> config ARCH_ENABLE_THP_MIGRATION
> bool
>
> +config CONTIG_ALLOC
> + def_bool (MEMORY_ISOLATION && COMPACTION) || CMA
> +
> config PHYS_ADDR_T_64BIT
> def_bool 64BIT
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 35fdde041f5c..ac9c45ffb344 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -8024,8 +8024,7 @@ bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
> return true;
> }
>
> -#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
> -
> +#ifdef CONFIG_CONTIG_ALLOC
> static unsigned long pfn_max_align_down(unsigned long pfn)
> {
> return pfn & ~(max_t(unsigned long, MAX_ORDER_NR_PAGES,
> --
> 2.20.1
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