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| author | Jan Beulich <jbeulich@novell.com> | 2008-12-16 11:30:08 +0000 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2008-12-19 22:47:10 +0100 |
| commit | 9bb482476c6c9d1ae033306440c51ceac93ea80c (patch) | |
| tree | b5e415eee46b66d9cc39e31d29d0d02994321d11 /scripts/kallsyms.c | |
| parent | ad7a953c522ceb496611d127e51e278bfe0ff483 (diff) | |
| download | linux-9bb482476c6c9d1ae033306440c51ceac93ea80c.tar.bz2 | |
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.c | 21 |
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; |