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From: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
To: Jia He <hejianet@gmail.com>, 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>
Cc: 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-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	Jia He <jia.he@hxt-semitech.com>
Subject: Re: [RESEND PATCH v10 3/6] mm: page_alloc: reduce unnecessary binary search in memblock_next_valid_pfn()
Date: Fri, 17 Aug 2018 01:08:50 +0000	[thread overview]
Message-ID: <61ca29b9-a985-cce0-03e9-d216791c802c@microsoft.com> (raw)
In-Reply-To: <1530867675-9018-4-git-send-email-hejianet@gmail.com>


> Signed-off-by: Jia He <jia.he@hxt-semitech.com>
> ---
>  mm/memblock.c | 37 +++++++++++++++++++++++++++++--------
>  1 file changed, 29 insertions(+), 8 deletions(-)
> 
> diff --git a/mm/memblock.c b/mm/memblock.c
> index ccad225..84f7fa7 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -1140,31 +1140,52 @@ int __init_memblock memblock_set_node(phys_addr_t base, phys_addr_t size,
>  #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
>  
>  #ifdef CONFIG_HAVE_MEMBLOCK_PFN_VALID
> +static int early_region_idx __init_memblock = -1;

One comment:

This should be __initdata, but even better bring it inside the function
as local static variable.

>  ulong __init_memblock memblock_next_valid_pfn(ulong pfn)
>  {

Otherwise looks good:

Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com>


  reply	other threads:[~2018-08-17  1:08 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-06  9:01 [RESEND PATCH v10 0/6] optimize memblock_next_valid_pfn and early_pfn_valid on arm and arm64 Jia He
2018-07-06  9:01 ` [RESEND PATCH v10 1/6] arm: arm64: introduce CONFIG_HAVE_MEMBLOCK_PFN_VALID Jia He
2018-08-17 14:50   ` Catalin Marinas
2018-08-20  6:27     ` Jia He
2018-07-06  9:01 ` [RESEND PATCH v10 2/6] mm: page_alloc: remain memblock_next_valid_pfn() on arm/arm64 Jia He
2018-07-06 22:37   ` Andrew Morton
2018-07-09  3:30     ` Jia He
2018-08-16 22:54   ` Pasha Tatashin
2018-07-06  9:01 ` [RESEND PATCH v10 3/6] mm: page_alloc: reduce unnecessary binary search in memblock_next_valid_pfn() Jia He
2018-08-17  1:08   ` Pasha Tatashin [this message]
2018-08-17  1:22     ` Pasha Tatashin
2018-08-21  6:14     ` Jia He
2018-08-21 21:08       ` Andrew Morton
2018-08-22  1:38         ` Jia He
2018-07-06  9:01 ` [RESEND PATCH v10 4/6] mm/memblock: introduce memblock_search_pfn_regions() Jia He
2018-07-06  9:01 ` [RESEND PATCH v10 5/6] mm/memblock: introduce pfn_valid_region() Jia He
2018-07-06  9:01 ` [RESEND PATCH v10 6/6] mm: page_alloc: reduce unnecessary binary search in early_pfn_valid() Jia He
2018-08-17  1:35   ` Pasha Tatashin
2018-08-17  1:38     ` Pavel Tatashin
2018-08-17  5:38     ` Jia He
2018-07-06 22:41 ` [RESEND PATCH v10 0/6] optimize memblock_next_valid_pfn and early_pfn_valid on arm and arm64 Andrew Morton
2018-08-15 22:34 ` Andrew Morton
2018-08-16 19:02   ` Pasha Tatashin

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