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From: Jia He <hejianet@gmail.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.com>,
Wei Yang <richard.weiyang@gmail.com>,
Kees Cook <keescook@chromium.org>,
Laura Abbott <labbott@redhat.com>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Philip Derrin <philip@cog.systems>,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
James Morse <james.morse@arm.com>,
Steve Capper <steve.capper@arm.com>,
Pavel Tatashin <pasha.tatashin@oracle.com>,
Gioh Kim <gi-oh.kim@profitbricks.com>,
Vlastimil Babka <vbabka@suse.cz>, Mel Gorman <mgorman@suse.de>,
Johannes Weiner <hannes@cmpxchg.org>,
Kemi Wang <kemi.wang@intel.com>, Petr Tesarik <ptesarik@suse.com>,
YASUAKI ISHIMATSU <yasu.isimatu@gmail.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Nikolay Borisov <nborisov@suse.com>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
Daniel Vacek <neelx@redhat.com>,
Eugeniu Rosca <erosca@de.adit-jv.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Jia He <jia.he@hxt-semitech.com>
Subject: Re: [PATCH v7 1/5] mm: page_alloc: remain memblock_next_valid_pfn() on arm and arm64
Date: Thu, 5 Apr 2018 20:29:30 +0800 [thread overview]
Message-ID: <fda3d3d4-b1da-6020-4257-1c8819800930@gmail.com> (raw)
In-Reply-To: <20180405112357.GA2647@bombadil.infradead.org>
Thanks, Matthew
On 4/5/2018 7:23 PM, Matthew Wilcox Wrote:
> On Thu, Apr 05, 2018 at 01:04:34AM -0700, Jia He wrote:
>> create mode 100644 include/linux/arm96_common.h
> 'arm96_common'?! No. Just no.
>
> The right way to share common code is to create a header file (or use
> an existing one), either in asm-generic or linux, with a #ifdef CONFIG_foo
> block and then 'select foo' in the arm Kconfig files. That allows this
> common code to be shared, maybe with powerpc or x86 or ... in the future.
>
ok
How about include/asm-generic/early_pfn.h ?
And could I use CONFIG_HAVE_ARCH_PFN_VALID and CONFIG_HAVE_MEMBLOCKin
this case?
Currently, arm/arm64 have memblock enable by default. When other arches
implement
their HAVE_MEMBLOCK and HAVE_ARCH_PFN_VALID, they can include this file?
--
Cheers,
Jia
next prev parent reply other threads:[~2018-04-05 12:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-05 8:04 [PATCH v7 0/5] optimize memblock_next_valid_pfn and early_pfn_valid " Jia He
2018-04-05 8:04 ` [PATCH v7 1/5] mm: page_alloc: remain memblock_next_valid_pfn() " Jia He
2018-04-05 11:23 ` Matthew Wilcox
2018-04-05 12:29 ` Jia He [this message]
2018-04-05 8:04 ` [PATCH v7 2/5] arm: arm64: page_alloc: reduce unnecessary binary search in memblock_next_valid_pfn() Jia He
2018-04-05 11:34 ` Matthew Wilcox
2018-04-05 12:44 ` Jia He
2018-04-05 12:50 ` Matthew Wilcox
2018-04-06 9:09 ` Russell King - ARM Linux
2018-04-06 10:23 ` Daniel Vacek
2018-04-08 2:05 ` Jia He
2018-04-05 8:04 ` [PATCH v7 3/5] mm/memblock: introduce memblock_search_pfn_regions() Jia He
2018-04-05 8:04 ` [PATCH v7 4/5] arm: arm64: introduce pfn_valid_region() Jia He
2018-04-05 8:04 ` [PATCH v7 5/5] mm: page_alloc: reduce unnecessary binary search in early_pfn_valid() Jia He
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