Subject: + documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols.patch added to -mm tree
To: josh@xxxxxxxxxxxxxxxx,boyu.mt@xxxxxxxxxx,gregkh@xxxxxxxxxxxxxxxxxxx,hpa@xxxxxxxxx,richard.weinberger@xxxxxxxxx,rob@xxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 01 Nov 2013 14:36:06 -0700
The patch titled
Subject: Documentation/ABI: document the non-ABI status of Kconfig and symbols
has been added to the -mm tree. Its filename is
documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols.patch
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------------------------------------------------------
From: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Subject: Documentation/ABI: document the non-ABI status of Kconfig and symbols
Discussion at Kernel Summit made it clear that the presence or absence of
specific Kconfig symbols are not considered ABI, and that no userspace (or
bootloader, etc) should rely on them.
In addition, kernel-internal symbols are well established as non-ABI, per
Documentation/stable_api_nonsense.txt.
Document both of these in Documentation/ABI/README, in a new section for
notable bits of non-ABI.
Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Cc: Rob Landley <rob@xxxxxxxxxxx>
Cc: Tao Ma <boyu.mt@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Acked-by: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Richard Weinberger <richard.weinberger@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/ABI/README | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff -puN Documentation/ABI/README~documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols Documentation/ABI/README
--- a/Documentation/ABI/README~documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols
+++ a/Documentation/ABI/README
@@ -72,3 +72,16 @@ kernel tree without going through the ob
It's up to the developer to place their interfaces in the category they
wish for it to start out in.
+
+
+Notable bits of non-ABI, which should not under any circumstances be considered
+stable:
+
+- Kconfig. Userspace should not rely on the presence or absence of any
+ particular Kconfig symbol, in /proc/config.gz, in the copy of .config
+ commonly installed to /boot, or in any invocation of the kernel build
+ process.
+
+- Kernel-internal symbols. Do not rely on the presence, absence, location, or
+ type of any kernel symbol, either in System.map files or the kernel binary
+ itself. See Documentation/stable_api_nonsense.txt.
_
Patches currently in -mm which might be from josh@xxxxxxxxxxxxxxxx are
checkpatch-report-missing-spaces-around-trigraphs-with-strict.patch
checkpatchpl-check-for-the-fsf-mailing-address.patch
documentation-abi-document-the-non-abi-status-of-kconfig-and-symbols.patch
scripts-bloat-o-meter-ignore-changes-in-the-size-of-linux_banner.patch
scripts-bloat-o-meter-use-startswith-rather-than-fragile-slicing.patch
linux-next.patch
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