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authorSam Ravnborg <sam@ravnborg.org>2009-01-14 21:38:20 +0100
committerSam Ravnborg <sam@ravnborg.org>2009-01-14 21:38:20 +0100
commit2ea038917bbdd51a7ae4a898c6a04641324dd033 (patch)
tree6a6f8b1db4d097d260449f88c267e39ab9d2bb3f /kernel/kallsyms.c
parenta6525042bfdfcab128bd91fad264de10fd24a55e (diff)
Revert "kbuild: strip generated symbols from *.ko"
This reverts commit ad7a953c522ceb496611d127e51e278bfe0ff483. And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL") 9bb482476c6c9d1ae033306440c51ceac93ea80c These stripping patches has caused a set of issues: 1) People have reported compatibility issues with binutils due to lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2 Reported by: Wenji 2) ccache and distcc no longer works as expeced Reported by: Ted, Roland, + others 3) The installed modules increased a lot in size Reported by: Ted, Davej + others Reported-by: Wenji Huang <wenji.huang@oracle.com> Reported-by: "Theodore Ts'o" <tytso@mit.edu> Reported-by: Dave Jones <davej@redhat.com> Reported-by: Roland McGrath <roland@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'kernel/kallsyms.c')
-rw-r--r--kernel/kallsyms.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index e694afa0eb8..7b8b0f21a5b 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -30,19 +30,20 @@
#define all_var 0
#endif
-extern const unsigned long kallsyms_addresses[];
-extern const u8 kallsyms_names[];
+/* These will be re-linked against their real values during the second link stage */
+extern const unsigned long kallsyms_addresses[] __attribute__((weak));
+extern const u8 kallsyms_names[] __attribute__((weak));
/* tell the compiler that the count isn't in the small data section if the arch
* has one (eg: FRV)
*/
extern const unsigned long kallsyms_num_syms
- __attribute__((__section__(".rodata")));
+__attribute__((weak, section(".rodata")));
-extern const u8 kallsyms_token_table[];
-extern const u16 kallsyms_token_index[];
+extern const u8 kallsyms_token_table[] __attribute__((weak));
+extern const u16 kallsyms_token_index[] __attribute__((weak));
-extern const unsigned long kallsyms_markers[];
+extern const unsigned long kallsyms_markers[] __attribute__((weak));
static inline int is_kernel_inittext(unsigned long addr)
{
@@ -167,6 +168,9 @@ static unsigned long get_symbol_pos(unsigned long addr,
unsigned long symbol_start = 0, symbol_end = 0;
unsigned long i, low, high, mid;
+ /* This kernel should never had been booted. */
+ BUG_ON(!kallsyms_addresses);
+
/* do a binary search on the sorted kallsyms_addresses array */
low = 0;
high = kallsyms_num_syms;