linux-kernel - Re: [PATCH RFC 01/10] rcu: Make CONFIG

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Date:   Wed, 8 Aug 2018 12:46:39 +0300
From:   Kirill Tkhai <ktkhai@...tuozzo.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     akpm@...ux-foundation.org, gregkh@...uxfoundation.org,
        rafael@...nel.org, viro@...iv.linux.org.uk,
        darrick.wong@...cle.com, paulmck@...ux.vnet.ibm.com,
        josh@...htriplett.org, rostedt@...dmis.org,
        mathieu.desnoyers@...icios.com, jiangshanlai@...il.com,
        hughd@...gle.com, shuah@...nel.org, robh@...nel.org,
        ulf.hansson@...aro.org, aspriel@...il.com,
        vivek.gautam@...eaurora.org, robin.murphy@....com, joe@...ches.com,
        heikki.krogerus@...ux.intel.com, vdavydov.dev@...il.com,
        mhocko@...e.com, chris@...is-wilson.co.uk,
        penguin-kernel@...ove.SAKURA.ne.jp, aryabinin@...tuozzo.com,
        willy@...radead.org, ying.huang@...el.com, shakeelb@...gle.com,
        jbacik@...com, mingo@...nel.org, mhiramat@...nel.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH RFC 01/10] rcu: Make CONFIG_SRCU unconditionally enabled

On 08.08.2018 04:05, Stephen Rothwell wrote:
> Hi Kirill,
> 
> On Tue, 07 Aug 2018 18:37:36 +0300 Kirill Tkhai <ktkhai@...tuozzo.com> wrote:
>>
>> This patch kills all CONFIG_SRCU defines and
>> the code under !CONFIG_SRCU.
>>
>> Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>
>> ---
>>  drivers/base/core.c                                |   42 --------------------
>>  include/linux/device.h                             |    2 -
>>  include/linux/rcutiny.h                            |    4 --
>>  include/linux/srcu.h                               |    5 --
>>  kernel/notifier.c                                  |    3 -
>>  kernel/rcu/Kconfig                                 |   12 +-----
>>  kernel/rcu/tree.h                                  |    5 --
>>  kernel/rcu/update.c                                |    4 --
>>  .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt  |    5 --
>>  9 files changed, 3 insertions(+), 79 deletions(-)
> 
> You left quite a few "select SRCU" statements scattered across Kconfig
> files:
> 
> $ git grep -l 'select SRCU' '*Kconfig*'
> arch/arm/kvm/Kconfig
> arch/arm64/kvm/Kconfig
> arch/mips/kvm/Kconfig
> arch/powerpc/kvm/Kconfig
> arch/s390/kvm/Kconfig
> arch/x86/Kconfig
> arch/x86/kvm/Kconfig
> block/Kconfig
> drivers/clk/Kconfig
> drivers/cpufreq/Kconfig
> drivers/dax/Kconfig
> drivers/devfreq/Kconfig
> drivers/hwtracing/stm/Kconfig
> drivers/md/Kconfig
> drivers/net/Kconfig
> drivers/opp/Kconfig
> fs/btrfs/Kconfig
> fs/notify/Kconfig
> fs/quota/Kconfig
> init/Kconfig
> kernel/rcu/Kconfig
> kernel/rcu/Kconfig.debug
> mm/Kconfig
> security/tomoyo/Kconfig

Yeah, thanks, Stephen.