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

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Date:   Sun, 28 Nov 2021 21:54:34 -0500
From:   Dennis Zhou <dennis@...nel.org>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
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 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.

Thanks,
Dennis