linux-kernel - [PATCH v3 0/3] kprobes: Remove MODULES dependency

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Message-Id: <20200714223239.1543716-1-jarkko.sakkinen@linux.intel.com>
Date:   Wed, 15 Jul 2020 01:32:26 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     linux-kernel@...r.kernel.org
Cc:     x86@...r.kernel.org,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Alexandre Ghiti <alex@...ti.fr>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>, Babu Moger <Babu.Moger@....com>,
        Borislav Petkov <bp@...e.de>, Brian Gerst <brgerst@...il.com>,
        "H. Peter Anvin" <hpa@...or.com>, Jiri Kosina <jkosina@...e.cz>,
        Joe Lawrence <joe.lawrence@...hat.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        live-patching@...r.kernel.org (open list:LIVE PATCHING),
        Marco Elver <elver@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Miroslav Benes <mbenes@...e.cz>,
        Nayna Jain <nayna@...ux.ibm.com>,
        Omar Sandoval <osandov@...com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Peter Collingbourne <pcc@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <will@...nel.org>
Subject: [PATCH v3 0/3] kprobes: Remove MODULES dependency

Remove MODULES dependency and migrate from module_alloc to the new
text_alloc() API Right now one has to compile LKM support only to enable
kprobes.  With this change applied, it is somewhat easier to create
custom test kernel's with a proper debugging capabilities, thus making
Linux more developer friendly.

Jarkko Sakkinen (3):
  kprobes: Add text_alloc() and text_free()
  module: Add lock_modules() and unlock_modules()
  kprobes: Flag out CONFIG_MODULES dependent code

 arch/Kconfig                |  2 +-
 arch/x86/Kconfig            |  3 ++
 arch/x86/kernel/Makefile    |  1 +
 arch/x86/kernel/module.c    | 49 -------------------------
 arch/x86/kernel/text.c      | 71 +++++++++++++++++++++++++++++++++++++
 include/linux/module.h      | 29 +++++++++++----
 include/linux/text.h        | 17 +++++++++
 kernel/kprobes.c            | 22 ++++++++++--
 kernel/livepatch/core.c     |  8 ++---
 kernel/module.c             | 70 ++++++++++++++++++++----------------
 kernel/trace/trace_kprobe.c | 20 +++++++++--
 11 files changed, 196 insertions(+), 96 deletions(-)
 create mode 100644 arch/x86/kernel/text.c
 create mode 100644 include/linux/text.h

-- 
2.25.1