From: Jia He <hejianet@gmail.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.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>,
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 <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>, Jia He <jia.he@hxt-semitech.com>
Subject: Re: [PATCH v5 5/5] mm: page_alloc: reduce unnecessary binary search in early_pfn_valid()
Date: Mon, 2 Apr 2018 16:15:09 +0800 [thread overview]
Message-ID: <75088758-f59c-c65a-6e88-116c1e6b6675@gmail.com> (raw)
In-Reply-To: <CAKv+Gu9jSXq7YN68Mk7WV4+aLr=nRtHmuQnHMdM8YhgeA-SYsg@mail.gmail.com>
On 4/2/2018 3:00 PM, Ard Biesheuvel Wrote:
> How much does it improve the performance? And in which cases?
>
> I guess it improves boot time on systems with physical address spaces
> that are sparsely populated with DRAM, but you really have to quantify
> this if you want other people to care.
Yes, I write the performance in patch 0/5. I will write it in the patch
description later.
--
Cheers,
Jia
prev parent reply other threads:[~2018-04-02 8:15 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-02 2:30 [PATCH v5 0/5] optimize memblock_next_valid_pfn and early_pfn_valid on arm and arm64 Jia He
2018-04-02 2:30 ` [PATCH v5 1/5] mm: page_alloc: remain memblock_next_valid_pfn() " Jia He
2018-04-02 6:55 ` Ard Biesheuvel
2018-04-02 7:49 ` Jia He
2018-04-02 7:53 ` Ard Biesheuvel
2018-04-03 3:07 ` Jia He
2018-04-11 4:47 ` Jia He
2018-04-02 7:50 ` kbuild test robot
2018-04-02 2:30 ` [PATCH v5 2/5] arm: arm64: page_alloc: reduce unnecessary binary search in memblock_next_valid_pfn() Jia He
2018-04-02 6:57 ` Ard Biesheuvel
2018-04-02 8:43 ` Daniel Vacek
2018-04-02 8:01 ` Daniel Vacek
2018-04-02 15:07 ` kbuild test robot
2018-04-02 2:30 ` [PATCH v5 3/5] mm/memblock: introduce memblock_search_pfn_regions() Jia He
2018-04-02 6:57 ` Ard Biesheuvel
2018-04-02 2:30 ` [PATCH v5 4/5] arm64: introduce pfn_valid_region() Jia He
2018-04-02 6:59 ` Ard Biesheuvel
2018-04-02 18:53 ` kbuild test robot
2018-04-02 2:30 ` [PATCH v5 5/5] mm: page_alloc: reduce unnecessary binary search in early_pfn_valid() Jia He
2018-04-02 7:00 ` Ard Biesheuvel
2018-04-02 8:15 ` Jia He [this message]
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