|author||Jan Beulich <firstname.lastname@example.org>||2008-12-16 11:28:14 +0000|
|committer||Sam Ravnborg <email@example.com>||2008-12-19 22:41:15 +0100|
kbuild: strip generated symbols from *.ko
This patch changes the way __crc_ symbols are being resolved from using ld to do so to using the assembler, thus allowing these symbols to be marked local (the linker creates then as global ones) and hence allow stripping (for modules) or ignoring (for vmlinux) them. While at this, also strip other generated symbols during module installation. One potentially debatable point is the handling of the flags passeed to gcc when translating the intermediate assembly file into an object: passing $(c_flags) unchanged doesn't work as gcc passes --gdwarf2 to gas whenever is sees any -g* option, even for -g0, and despite the fact that the compiler would have already produced all necessary debug info in the C->assembly translation phase. I took the approach of just filtering out all -g* options, but an alternative to such negative filtering might be to have a positive filter which might, in the ideal case allow just all the -Wa,* options to pass through. Signed-off-by: Jan Beulich <firstname.lastname@example.org> Signed-off-by: Sam Ravnborg <email@example.com>
Diffstat (limited to 'scripts/mksysmap')
1 files changed, 2 insertions, 5 deletions
diff --git a/scripts/mksysmap b/scripts/mksysmap
index 6e133a0bae7a..1db316a3712b 100644
@@ -37,9 +37,6 @@
# readprofile starts reading symbols when _stext is found, and
# continue until it finds a symbol which is not either of 'T', 't',
-# 'W' or 'w'. __crc_ are 'A' and placed in the middle
-# so we just ignore them to let readprofile continue to work.
-# (At least sparc64 has __crc_ in the middle).
-$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)' > $2
+# 'W' or 'w'.
+$NM -n $1 | grep -v '\( [aNUw] \)\|\( \$[adt]\)' > $2