From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: Jia He <hejianet@gmail.com>
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 3/5] mm/memblock: introduce memblock_search_pfn_regions()
Date: Mon, 2 Apr 2018 08:57:44 +0200 [thread overview]
Message-ID: <CAKv+Gu8dO=fn+MLvZEGzJMvw6u1vMaACz5utBzE4YLLFduGRFQ@mail.gmail.com> (raw)
In-Reply-To: <1522636236-12625-4-git-send-email-hejianet@gmail.com>
On 2 April 2018 at 04:30, Jia He <hejianet@gmail.com> wrote:
> This api is the preparation for further optimizing early_pfn_valid
>
Please add more explanatation here of what it is you are doing and why.
> Signed-off-by: Jia He <jia.he@hxt-semitech.com>
> ---
> include/linux/memblock.h | 2 ++
> mm/memblock.c | 9 +++++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/include/linux/memblock.h b/include/linux/memblock.h
> index 0257aee..a0127b3 100644
> --- a/include/linux/memblock.h
> +++ b/include/linux/memblock.h
> @@ -203,6 +203,8 @@ void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
> i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
> #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
>
> +int memblock_search_pfn_regions(unsigned long pfn);
> +
> /**
> * for_each_free_mem_range - iterate through free memblock areas
> * @i: u64 used as loop variable
> diff --git a/mm/memblock.c b/mm/memblock.c
> index ba7c878..0f4004c 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -1617,6 +1617,15 @@ static int __init_memblock memblock_search(struct memblock_type *type, phys_addr
> return -1;
> }
>
> +/* search memblock with the input pfn, return the region idx */
> +int __init_memblock memblock_search_pfn_regions(unsigned long pfn)
> +{
> + struct memblock_type *type = &memblock.memory;
> + int mid = memblock_search(type, PFN_PHYS(pfn));
> +
> + return mid;
> +}
> +
> bool __init memblock_is_reserved(phys_addr_t addr)
> {
> return memblock_search(&memblock.reserved, addr) != -1;
> --
> 2.7.4
>
next prev parent reply other threads:[~2018-04-02 6:57 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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAKv+Gu8dO=fn+MLvZEGzJMvw6u1vMaACz5utBzE4YLLFduGRFQ@mail.gmail.com' \
--to=ard.biesheuvel@linaro.org \
--cc=akpm@linux-foundation.org \
--cc=aryabinin@virtuozzo.com \
--cc=catalin.marinas@arm.com \
--cc=daniel.m.jordan@oracle.com \
--cc=erosca@de.adit-jv.com \
--cc=gi-oh.kim@profitbricks.com \
--cc=hannes@cmpxchg.org \
--cc=hejianet@gmail.com \
--cc=james.morse@arm.com \
--cc=jia.he@hxt-semitech.com \
--cc=keescook@chromium.org \
--cc=kemi.wang@intel.com \
--cc=labbott@redhat.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux@armlinux.org.uk \
--cc=mark.rutland@arm.com \
--cc=mgorman@suse.de \
--cc=mhocko@suse.com \
--cc=nborisov@suse.com \
--cc=neelx@redhat.com \
--cc=pasha.tatashin@oracle.com \
--cc=philip@cog.systems \
--cc=ptesarik@suse.com \
--cc=richard.weiyang@gmail.com \
--cc=steve.capper@arm.com \
--cc=takahiro.akashi@linaro.org \
--cc=vbabka@suse.cz \
--cc=vladimir.murzin@arm.com \
--cc=will.deacon@arm.com \
--cc=yasu.isimatu@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).