linux-kernel - [PATCH v2 0/1] Introduce CONFIG_DEBUG_INFO

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Date:   Wed, 25 Oct 2023 15:36:39 -0700
From:   Stephen Brennan <stephen.s.brennan@...cle.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Stephen Brennan <stephen.s.brennan@...cle.com>,
        linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-debuggers@...r.kernel.org
Subject: [PATCH v2 0/1] Introduce CONFIG_DEBUG_INFO_IKCONFIG

Hello All,

This is an updated submission of the patch to add an alternative for
CONFIG_IKCONFIG. I wanted to bring it up again for consideration, and I also
made one small but important update.

v1: https://lore.kernel.org/linux-debuggers/20231004165804.659482-1-stephen.s.brennan@oracle.com/T/#t

Changes since v1:

* I added "default y if IKCONFIG!=y". The result is that whenever DEBUG_INFO=y
  is enabled, and IKCONFIG is not built-in, then DEBUG_INFO_IKCONFIG will get
  enabled automatically. The whole point of this patch is for kernel debuggers
  to be able to rely on having kernel configuration information. The IKCONFIG
  data is quite small compared to kernel debuginfo, and it doesn't change
  anything at runtime. It's safe to enable this automatically, and it's
  important so that distributions (who create debuginfo explicitly to allow
  kernel debugging) will automatically begin creating this info for debuggers.

* Randy Dunlap did review this, but I didn't apply that tag with the update,
  since I understand changing defaults is a major update, and it's a small patch
  to begin with, so I didn't want to misrepresent the review.

Stephen Brennan (1):
  kernel/config: Introduce CONFIG_DEBUG_INFO_IKCONFIG

 include/asm-generic/vmlinux.lds.h |  3 ++-
 kernel/Makefile                   |  1 +
 kernel/configs-debug.S            | 18 ++++++++++++++++++
 lib/Kconfig.debug                 | 15 +++++++++++++++
 4 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 kernel/configs-debug.S

-- 
2.39.3