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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
Download Patch File Download Diff File Expand all files Collapse all files

231
scripts/genksyms/keywords.c_shipped
View File

@@ -1,4 +1,4 @@
/* ANSI-C code produced by gperf version 3.0.2 */
/* ANSI-C code produced by gperf version 3.0.1 */
/* Command-line: gperf -L ANSI-C -a -C -E -g -H is_reserved_hash -k '1,3,$' -N is_reserved_word -p -t scripts/genksyms/keywords.gperf */
#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
@@ -32,7 +32,7 @@
#line 3 "scripts/genksyms/keywords.gperf"
struct resword { const char *name; int token; };
/* maximum key range = 62, duplicates = 0 */
/* maximum key range = 64, duplicates = 0 */
#ifdef __GNUC__
__inline
@@ -46,32 +46,32 @@ is_reserved_hash (register const char *str, register unsigned int len)
{
static const unsigned char asso_values[] =
{
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 5,
65, 65, 65, 65, 65, 65, 35, 65, 65, 65,
0, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 0, 65, 0, 65, 5,
20, 15, 10, 30, 65, 15, 65, 65, 20, 0,
10, 35, 20, 65, 10, 5, 0, 10, 5, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
65, 65, 65, 65, 65, 65
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 0,
67, 67, 67, 67, 67, 67, 15, 67, 67, 67,
0, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 0, 67, 0, 67, 5,
25, 20, 15, 30, 67, 15, 67, 67, 10, 0,
10, 40, 20, 67, 10, 5, 0, 10, 15, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67,
67, 67, 67, 67, 67, 67
};
return len + asso_values[(unsigned char)str[2]] + asso_values[(unsigned char)str[0]] + asso_values[(unsigned char)str[len - 1]];
}
@@ -84,116 +84,119 @@ is_reserved_word (register const char *str, register unsigned int len)
{
enum
{
TOTAL_KEYWORDS = 43,
TOTAL_KEYWORDS = 45,
MIN_WORD_LENGTH = 3,
MAX_WORD_LENGTH = 24,
MIN_HASH_VALUE = 3,
MAX_HASH_VALUE = 64
MAX_HASH_VALUE = 66
};
static const struct resword wordlist[] =
{
{""}, {""}, {""},
#line 26 "scripts/genksyms/keywords.gperf"
#line 28 "scripts/genksyms/keywords.gperf"
{"asm", ASM_KEYW},
{""},
#line 8 "scripts/genksyms/keywords.gperf"
#line 10 "scripts/genksyms/keywords.gperf"
{"__asm", ASM_KEYW},
{""},
#line 9 "scripts/genksyms/keywords.gperf"
#line 11 "scripts/genksyms/keywords.gperf"
{"__asm__", ASM_KEYW},
{""}, {""},
#line 52 "scripts/genksyms/keywords.gperf"
#line 54 "scripts/genksyms/keywords.gperf"
{"__typeof__", TYPEOF_KEYW},
{""},
#line 12 "scripts/genksyms/keywords.gperf"
{"__const", CONST_KEYW},
#line 11 "scripts/genksyms/keywords.gperf"
{"__attribute__", ATTRIBUTE_KEYW},
#line 13 "scripts/genksyms/keywords.gperf"
{"__const__", CONST_KEYW},
#line 18 "scripts/genksyms/keywords.gperf"
{"__signed__", SIGNED_KEYW},
#line 44 "scripts/genksyms/keywords.gperf"
{"static", STATIC_KEYW},
#line 20 "scripts/genksyms/keywords.gperf"
{"__volatile__", VOLATILE_KEYW},
#line 39 "scripts/genksyms/keywords.gperf"
{"int", INT_KEYW},
#line 32 "scripts/genksyms/keywords.gperf"
{"char", CHAR_KEYW},
#line 33 "scripts/genksyms/keywords.gperf"
{"const", CONST_KEYW},
#line 45 "scripts/genksyms/keywords.gperf"
{"struct", STRUCT_KEYW},
#line 24 "scripts/genksyms/keywords.gperf"
{"__restrict__", RESTRICT_KEYW},
#line 25 "scripts/genksyms/keywords.gperf"
{"restrict", RESTRICT_KEYW},
#line 23 "scripts/genksyms/keywords.gperf"
{"_restrict", RESTRICT_KEYW},
#line 16 "scripts/genksyms/keywords.gperf"
{"__inline__", INLINE_KEYW},
#line 10 "scripts/genksyms/keywords.gperf"
{"__attribute", ATTRIBUTE_KEYW},
{""},
#line 14 "scripts/genksyms/keywords.gperf"
{"__extension__", EXTENSION_KEYW},
#line 35 "scripts/genksyms/keywords.gperf"
{"enum", ENUM_KEYW},
#line 19 "scripts/genksyms/keywords.gperf"
{"__volatile", VOLATILE_KEYW},
#line 36 "scripts/genksyms/keywords.gperf"
{"extern", EXTERN_KEYW},
{"__const", CONST_KEYW},
#line 13 "scripts/genksyms/keywords.gperf"
{"__attribute__", ATTRIBUTE_KEYW},
#line 15 "scripts/genksyms/keywords.gperf"
{"__const__", CONST_KEYW},
#line 20 "scripts/genksyms/keywords.gperf"
{"__signed__", SIGNED_KEYW},
#line 46 "scripts/genksyms/keywords.gperf"
{"static", STATIC_KEYW},
{""},
#line 17 "scripts/genksyms/keywords.gperf"
{"__signed", SIGNED_KEYW},
#line 41 "scripts/genksyms/keywords.gperf"
{"int", INT_KEYW},
#line 34 "scripts/genksyms/keywords.gperf"
{"char", CHAR_KEYW},
#line 35 "scripts/genksyms/keywords.gperf"
{"const", CONST_KEYW},
#line 47 "scripts/genksyms/keywords.gperf"
{"struct", STRUCT_KEYW},
#line 26 "scripts/genksyms/keywords.gperf"
{"__restrict__", RESTRICT_KEYW},
#line 27 "scripts/genksyms/keywords.gperf"
{"restrict", RESTRICT_KEYW},
#line 7 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW},
{""},
#line 51 "scripts/genksyms/keywords.gperf"
{"typeof", TYPEOF_KEYW},
#line 46 "scripts/genksyms/keywords.gperf"
{"typedef", TYPEDEF_KEYW},
#line 15 "scripts/genksyms/keywords.gperf"
{"__inline", INLINE_KEYW},
#line 31 "scripts/genksyms/keywords.gperf"
{"auto", AUTO_KEYW},
#line 47 "scripts/genksyms/keywords.gperf"
{"union", UNION_KEYW},
{""}, {""},
#line 48 "scripts/genksyms/keywords.gperf"
{"unsigned", UNSIGNED_KEYW},
#line 49 "scripts/genksyms/keywords.gperf"
{"void", VOID_KEYW},
#line 42 "scripts/genksyms/keywords.gperf"
{"short", SHORT_KEYW},
{""}, {""},
#line 50 "scripts/genksyms/keywords.gperf"
{"volatile", VOLATILE_KEYW},
{""},
#line 37 "scripts/genksyms/keywords.gperf"
{"float", FLOAT_KEYW},
#line 34 "scripts/genksyms/keywords.gperf"
{"double", DOUBLE_KEYW},
{""},
#line 5 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW},
{""}, {""},
#line 38 "scripts/genksyms/keywords.gperf"
{"inline", INLINE_KEYW},
#line 6 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW},
#line 41 "scripts/genksyms/keywords.gperf"
{"register", REGISTER_KEYW},
#line 18 "scripts/genksyms/keywords.gperf"
{"__inline__", INLINE_KEYW},
{""},
#line 22 "scripts/genksyms/keywords.gperf"
{"_Bool", BOOL_KEYW},
#line 43 "scripts/genksyms/keywords.gperf"
{"signed", SIGNED_KEYW},
{"__volatile__", VOLATILE_KEYW},
#line 5 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW},
#line 25 "scripts/genksyms/keywords.gperf"
{"_restrict", RESTRICT_KEYW},
{""},
#line 12 "scripts/genksyms/keywords.gperf"
{"__attribute", ATTRIBUTE_KEYW},
#line 6 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW},
#line 16 "scripts/genksyms/keywords.gperf"
{"__extension__", EXTENSION_KEYW},
#line 37 "scripts/genksyms/keywords.gperf"
{"enum", ENUM_KEYW},
#line 8 "scripts/genksyms/keywords.gperf"
{"EXPORT_UNUSED_SYMBOL", EXPORT_SYMBOL_KEYW},
#line 38 "scripts/genksyms/keywords.gperf"
{"extern", EXTERN_KEYW},
{""},
#line 19 "scripts/genksyms/keywords.gperf"
{"__signed", SIGNED_KEYW},
#line 9 "scripts/genksyms/keywords.gperf"
{"EXPORT_UNUSED_SYMBOL_GPL", EXPORT_SYMBOL_KEYW},
#line 49 "scripts/genksyms/keywords.gperf"
{"union", UNION_KEYW},
#line 53 "scripts/genksyms/keywords.gperf"
{"typeof", TYPEOF_KEYW},
#line 48 "scripts/genksyms/keywords.gperf"
{"typedef", TYPEDEF_KEYW},
#line 17 "scripts/genksyms/keywords.gperf"
{"__inline", INLINE_KEYW},
#line 33 "scripts/genksyms/keywords.gperf"
{"auto", AUTO_KEYW},
#line 21 "scripts/genksyms/keywords.gperf"
{"__volatile", VOLATILE_KEYW},
{""}, {""},
#line 50 "scripts/genksyms/keywords.gperf"
{"unsigned", UNSIGNED_KEYW},
{""},
#line 44 "scripts/genksyms/keywords.gperf"
{"short", SHORT_KEYW},
#line 40 "scripts/genksyms/keywords.gperf"
{"long", LONG_KEYW}
{"inline", INLINE_KEYW},
{""},
#line 52 "scripts/genksyms/keywords.gperf"
{"volatile", VOLATILE_KEYW},
#line 42 "scripts/genksyms/keywords.gperf"
{"long", LONG_KEYW},
#line 24 "scripts/genksyms/keywords.gperf"
{"_Bool", BOOL_KEYW},
{""}, {""},
#line 43 "scripts/genksyms/keywords.gperf"
{"register", REGISTER_KEYW},
#line 51 "scripts/genksyms/keywords.gperf"
{"void", VOID_KEYW},
#line 39 "scripts/genksyms/keywords.gperf"
{"float", FLOAT_KEYW},
#line 36 "scripts/genksyms/keywords.gperf"
{"double", DOUBLE_KEYW},
{""}, {""}, {""}, {""},
#line 45 "scripts/genksyms/keywords.gperf"
{"signed", SIGNED_KEYW}
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)

2
scripts/genksyms/keywords.gperf
View File

@@ -5,6 +5,8 @@ struct resword { const char *name; int token; }
EXPORT_SYMBOL, EXPORT_SYMBOL_KEYW
EXPORT_SYMBOL_GPL, EXPORT_SYMBOL_KEYW
EXPORT_SYMBOL_GPL_FUTURE, EXPORT_SYMBOL_KEYW
EXPORT_UNUSED_SYMBOL, EXPORT_SYMBOL_KEYW
EXPORT_UNUSED_SYMBOL_GPL, EXPORT_SYMBOL_KEYW
__asm, ASM_KEYW
__asm__, ASM_KEYW
__attribute, ATTRIBUTE_KEYW

21
scripts/kallsyms.c
View File

@@ -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;