linux-kernel - [PATCH 0/6] Add an asm-generic cpuinfo

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Message-Id: <20220821113512.2056409-1-mail@conchuod.ie>
Date:   Sun, 21 Aug 2022 12:35:07 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Michal Simek <monstr@...str.eu>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.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>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H . Peter Anvin" <hpa@...or.com>, Arnd Bergmann <arnd@...db.de>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Kees Cook <keescook@...omium.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-arch@...r.kernel.org
Subject: [PATCH 0/6] Add an asm-generic cpuinfo_op declaration

From: Conor Dooley <conor.dooley@...rochip.com>

RISC-V is missing a prototype for cpuinfo_op. Rather than adding yet
another `extern const struct seq_operations cpuinfo_op;` to an arch
specific header file, create an asm-generic variant and migrate the
existing arch variants there too. Obv. there are other archs that use
cpuinfo_op but don't declare it and surely also have the same warning?
I went for the minimum change here, but would be perfectly happy to
extend the change to all archs if this change is worthwhile. Or just
make a header in arch/riscv, any of the three work for me!

If this isn't the approach I should've gone for, any direction would
be great :) I tried pushing this last weekend to get LKP to test it but
I got neither a build success nor a build failure email from it, so
I figured I may as well just send the patches..

I wasn't too sure if this could be a single patch, so I split it out
into a patch fixing the issue on RISC-V & copy-paste patches for each
arch that I moved.

Thanks,
Conor.

Conor Dooley (6):
  asm-generic: add a cpuinfo_ops definition in shared code
  microblaze: use the asm-generic version of cpuinfo_op
  s390: use the asm-generic version of cpuinfo_op
  sh: use the asm-generic version of cpuinfo_op
  sparc: use the asm-generic version of cpuinfo_op
  x86: use the asm-generic version of cpuinfo_op

 arch/microblaze/include/asm/processor.h | 2 +-
 arch/riscv/include/asm/processor.h      | 1 +
 arch/s390/include/asm/processor.h       | 2 +-
 arch/sh/include/asm/processor.h         | 2 +-
 arch/sparc/include/asm/cpudata.h        | 3 +--
 arch/x86/include/asm/processor.h        | 2 +-
 include/asm-generic/processor.h         | 7 +++++++
 7 files changed, 13 insertions(+), 6 deletions(-)
 create mode 100644 include/asm-generic/processor.h

-- 
2.37.1