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init/version.c: remove Version_<LINUX_VERSION_CODE> symbol

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This code hunk creates a Version_<LINUX_VERSION_CODE> symbol if
CONFIG_KALLSYMS is disabled.  For example, building the kernel v5.10 for
allnoconfig creates the following symbol:

  $ nm vmlinux | grep Version_
  c116b028 B Version_330240

There is no in-tree user of this symbol.

Commit 197dcffc8b ("init/version.c: define version_string only if
CONFIG_KALLSYMS is not defined") mentions that Version_* is only used
with ksymoops.

However, a commit in the pre-git era [1] had added the statement,
"ksymoops is useless on 2.6.  Please use the Oops in its original format".

That statement existed until commit 4eb9241127 ("Documentation:
admin-guide: update bug-hunting.rst") finally removed the stale
ksymoops information.

This symbol is no longer needed.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=ad68b2f085f5c79e4759ca2d13947b3c885ee831

Link: https://lkml.kernel.org/r/20210120033452.2895170-1-masahiroy@kernel.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Daniel Guilak <guilak@linux.vnet.ibm.com>
Cc: Lee Revell <rlrevell@joe-job.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Masahiro Yamada 2021-02-25 17:22:11 -08:00 committed by Linus Torvalds
parent 5b8f82e1a1
commit 073a9ecb3a
1 changed files with 0 additions and 8 deletions
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8
init/version.c
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@ -16,14 +16,6 @@
#include <linux/version.h>
#include <linux/proc_ns.h>
#ifndef CONFIG_KALLSYMS
#define version(a) Version_ ## a
#define version_string(a) version(a)
extern int version_string(LINUX_VERSION_CODE);
int version_string(LINUX_VERSION_CODE);
#endif
struct uts_namespace init_uts_ns = {
.ns.count = REFCOUNT_INIT(2),
.name = {