linux-kernel - [PATCH 0/2] sched: cleanup CONFIG_SCHED

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Date:   Fri,  8 Oct 2021 12:53:45 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-ia64@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>, aubrey.li@...ux.intel.com,
        song.bao.hua@...ilicon.com, tim.c.chen@...ux.intel.com,
        jonathan.cameron@...wei.com, Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Helge Deller <deller@....de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Mike Rapoport <rppt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ard Biesheuvel <ardb@...nel.org>,
        YiFei Zhu <yifeifz2@...inois.edu>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Sergei Trofimovich <slyfox@...too.org>,
        David Hildenbrand <david@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Chris Down <chris@...isdown.name>,
        Vipin Sharma <vipinsh@...gle.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Daniel Borkmann <daniel@...earbox.net>,
        Vlastimil Babka <vbabka@...e.cz>,
        Frederic Weisbecker <frederic@...nel.org>,
        Hugh Dickins <hughd@...gle.com>,
        Michal Hocko <mhocko@...nel.org>
Subject: [PATCH 0/2] sched: cleanup CONFIG_SCHED_MC & friends

Hi folks,

This stems from Barry introducing a new CONFIG_SCHED_CLUSTER which highlighted
the current state of similar Kconfigs isn't great:
  http://lore.kernel.org/r/CAGsJ_4xZD0sG0Df666f0bvHOzuPMjnw0dN_mArER5k1pJ6LPLw@mail.gmail.com

The changes happen all in one big patch; the alternative would be to have one
patch per arch that adds the ARCH_SUPPORTS_SCHED_* selection, then a final patch
that adds the generic definitions and removes the arch ones (which I can do if
that's a preferred approach).

Briefly tested by setting ARCH=foo and playing around with menuconfig.

Based on top of Peter's queue:
  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git -b sched/next

Patches are also available at:
  https://git.gitlab.arm.com/linux-arm/linux-vs.git -b mainline/sched/topo_kconfig_cleanup

Cheers,
Valentin

Valentin Schneider (2):
  sched: Move Kconfig.preempt to sched/Kconfig
  sched: Centralize SCHED_{SMT, MC, CLUSTER} definitions

 arch/arm/Kconfig                          | 18 ++--------
 arch/arm64/Kconfig                        | 26 ++------------
 arch/ia64/Kconfig                         |  9 +----
 arch/mips/Kconfig                         | 10 +-----
 arch/parisc/Kconfig                       |  9 +----
 arch/powerpc/Kconfig                      |  9 +----
 arch/s390/Kconfig                         |  8 ++---
 arch/sh/Kconfig                           |  1 +
 arch/sh/mm/Kconfig                        |  9 -----
 arch/sparc/Kconfig                        | 20 ++---------
 arch/x86/Kconfig                          | 26 ++------------
 init/Kconfig                              |  2 +-
 kernel/{Kconfig.preempt => sched/Kconfig} | 41 +++++++++++++++++++++++
 13 files changed, 59 insertions(+), 129 deletions(-)
 rename kernel/{Kconfig.preempt => sched/Kconfig} (79%)

--
2.25.1