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allow stripping of generated symbols under CONFIG_KALLSYMS_ALL

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Building upon parts of the module stripping patch, this patch
introduces similar stripping for vmlinux when CONFIG_KALLSYMS_ALL=y.
Using CONFIG_KALLSYMS_STRIP_GENERATED reduces the overhead of
CONFIG_KALLSYMS_ALL from 245k/310k to 65k/80k for the (i386/x86-64)
kernels I tested with.

The patch also does away with the need to special case the kallsyms-
internal symbols by making them available even in the first linking
stage.

While it is a generated file, the patch includes the changes to
scripts/genksyms/keywords.c_shipped, as I'm unsure what the procedure
here is.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Jan Beulich
2008-12-16 11:30:08 +00:00
committed by Sam Ravnborg
parent ad7a953c52
commit 9bb482476c
7 changed files with 176 additions and 149 deletions
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init/Kconfig
+7
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@@ -588,6 +588,13 @@ config KALLSYMS_ALL
Say N.
config KALLSYMS_STRIP_GENERATED
bool "Strip machine generated symbols from kallsyms"
depends on KALLSYMS_ALL
default y
help
Say N if you want kallsyms to retain even machine generated symbols.
config KALLSYMS_EXTRA_PASS
bool "Do an extra kallsyms pass"
depends on KALLSYMS