linux-kernel - [RFC PATCH 0/5] kexec: use IS_ENABLED(CONFIG_KEXEC

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Date:   Fri,  3 Dec 2021 13:11:52 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Will Deacon <will@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        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,
        hpa@...or.com, Eric Biederman <ebiederm@...ssion.com>,
        Alexandre Ghiti <alex@...ti.fr>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, kexec@...ts.infradead.org
Subject: [RFC PATCH 0/5] kexec: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef

Replace the conditional compilation using "#ifdef CONFIG_KEXEC_CORE"
by a check for "IS_ENABLED(CONFIG_BLK_DEV_INITRD)", to simplify the
code and increase compile coverage.

I only modifies x86, arm, arm64 and riscv, other arch are not touched.
If the idea is accepted, I will modify all architectures code.

Jisheng Zhang (5):
  kexec: make crashk_res, crashk_low_res and crash_notes symbols always
    visible
  riscv: mm: init: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
  x86/setup: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
  arm64: mm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
  arm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef

 arch/arm/kernel/setup.c |  7 +++----
 arch/arm64/mm/init.c    |  9 +++------
 arch/riscv/mm/init.c    |  6 ++----
 arch/x86/kernel/setup.c | 10 +++-------
 include/linux/kexec.h   | 12 ++++++------
 5 files changed, 17 insertions(+), 27 deletions(-)

-- 
2.34.1