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authorJan Beulich <jbeulich@novell.com>2008-12-16 11:30:08 +0000
committerSam Ravnborg <sam@ravnborg.org>2008-12-19 22:47:10 +0100
commit9bb482476c6c9d1ae033306440c51ceac93ea80c (patch)
treeb5e415eee46b66d9cc39e31d29d0d02994321d11 /scripts/kallsyms.c
parentad7a953c522ceb496611d127e51e278bfe0ff483 (diff)
downloadlinux-9bb482476c6c9d1ae033306440c51ceac93ea80c.tar.gz
allow stripping of generated symbols under CONFIG_KALLSYMS_ALL
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>
Diffstat (limited to 'scripts/kallsyms.c')
-rw-r--r--scripts/kallsyms.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index ad2434b26970..92758120a767 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -130,18 +130,9 @@ static int read_symbol(FILE *in, struct sym_entry *s)
static int symbol_valid(struct sym_entry *s)
{
/* Symbols which vary between passes. Passes 1 and 2 must have
- * identical symbol lists. The kallsyms_* symbols below are only added
- * after pass 1, they would be included in pass 2 when --all-symbols is
- * specified so exclude them to get a stable symbol list.
+ * identical symbol lists.
*/
static char *special_symbols[] = {
- "kallsyms_addresses",
- "kallsyms_num_syms",
- "kallsyms_names",
- "kallsyms_markers",
- "kallsyms_token_table",
- "kallsyms_token_index",
-
/* Exclude linker generated symbols which vary between passes */
"_SDA_BASE_", /* ppc */
"_SDA2_BASE_", /* ppc */
@@ -173,7 +164,9 @@ static int symbol_valid(struct sym_entry *s)
}
/* Exclude symbols which vary between passes. */
- if (strstr((char *)s->sym + offset, "_compiled."))
+ if (strstr((char *)s->sym + offset, "_compiled.") ||
+ strncmp((char*)s->sym + offset, "__compound_literal.", 19) == 0 ||
+ strncmp((char*)s->sym + offset, "__compound_literal$", 19) == 0)
return 0;
for (i = 0; special_symbols[i]; i++)
@@ -550,8 +543,10 @@ int main(int argc, char **argv)
usage();
read_map(stdin);
- sort_symbols();
- optimize_token_table();
+ if (table_cnt) {
+ sort_symbols();
+ optimize_token_table();
+ }
write_src();
return 0;