linux-kernel - Re: [PATCH RFC 0/4] mm: percpu: Cleanup percpu first chunk funciton

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Date:   Mon, 29 Nov 2021 11:06:23 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Dennis Zhou <dennis@...nel.org>
CC:     <akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <linux-mm@...ck.org>, <tj@...nel.org>,
        <gregkh@...uxfoundation.org>, <cl@...ux.com>,
        <catalin.marinas@....com>, <will@...nel.org>,
        <tsbogend@...ha.franken.de>, <mpe@...erman.id.au>,
        <benh@...nel.crashing.org>, <paulus@...ba.org>,
        <paul.walmsley@...ive.com>, <palmer@...belt.com>,
        <aou@...s.berkeley.edu>, <davem@...emloft.net>,
        <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
        <dave.hansen@...ux.intel.com>, <hpa@...or.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-ia64@...r.kernel.org>, <linux-mips@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-riscv@...ts.infradead.org>,
        <sparclinux@...r.kernel.org>, <x86@...nel.org>
Subject: Re: [PATCH RFC 0/4] mm: percpu: Cleanup percpu first chunk funciton


On 2021/11/29 10:54, Dennis Zhou wrote:
> On Mon, Nov 29, 2021 at 10:51:18AM +0800, Kefeng Wang wrote:
>> Hi Dennis and all maintainers, any comments about the changes, many thanks.
>>
>> On 2021/11/21 17:35, Kefeng Wang wrote:
>>> When support page mapping percpu first chunk allocator on arm64, we
>>> found there are lots of duplicated codes in percpu embed/page first
>>> chunk allocator. This patchset is aimed to cleanup them and should
>>> no funciton change, only test on arm64.
>>>
>>> Kefeng Wang (4):
>>>     mm: percpu: Generalize percpu related config
>>>     mm: percpu: Add pcpu_fc_cpu_to_node_fn_t typedef
>>>     mm: percpu: Add generic pcpu_fc_alloc/free funciton
>>>     mm: percpu: Add generic pcpu_populate_pte() function
>>>
>>>    arch/arm64/Kconfig             |  20 +----
>>>    arch/ia64/Kconfig              |   9 +--
>>>    arch/mips/Kconfig              |  10 +--
>>>    arch/mips/mm/init.c            |  14 +---
>>>    arch/powerpc/Kconfig           |  17 +---
>>>    arch/powerpc/kernel/setup_64.c |  92 +--------------------
>>>    arch/riscv/Kconfig             |  10 +--
>>>    arch/sparc/Kconfig             |  12 +--
>>>    arch/sparc/kernel/smp_64.c     | 105 +-----------------------
>>>    arch/x86/Kconfig               |  17 +---
>>>    arch/x86/kernel/setup_percpu.c |  66 ++-------------
>>>    drivers/base/arch_numa.c       |  68 +---------------
>>>    include/linux/percpu.h         |  13 +--
>>>    mm/Kconfig                     |  12 +++
>>>    mm/percpu.c                    | 143 +++++++++++++++++++++++++--------
>>>    15 files changed, 165 insertions(+), 443 deletions(-)
>>>
> Hi Kefang,
>
> I apologize for the delay. It's a holiday week in the US + I had some
> personal things come up at the beginning of last week. I'll have it
> reviewed by tomorrow.
It's great to hear about your reply,  thanks.
>
> Thanks,
> Dennis
> .