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Kbuild, lto: Drop .number postfixes in modpost

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LTO turns all global symbols effectively into statics. This
has the side effect that they all have a .NUMBER postfix to make
them unique. In modpost drop this postfix because it confuses
it.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1391846481-31491-8-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Andi Kleen 2014-02-08 09:01:12 +01:00 committed by H. Peter Anvin
parent 77ab21adae
commit 7d02b490e9
2 changed files with 15 additions and 2 deletions
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15
scripts/mod/modpost.c
View File

@ -1684,6 +1684,19 @@ static void check_sec_ref(struct module *mod, const char *modname,
}
}
static char *remove_dot(char *s)
{
char *end;
int n = strcspn(s, ".");
if (n > 0 && s[n] != 0) {
strtoul(s + n + 1, &end, 10);
if (end > s + n + 1 && (*end == '.' || *end == 0))
s[n] = 0;
}
return s;
}
static void read_symbols(char *modname)
{
const char *symname;
@ -1722,7 +1735,7 @@ static void read_symbols(char *modname)
}
for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
symname = info.strtab + sym->st_name;
symname = remove_dot(info.strtab + sym->st_name);
handle_modversions(mod, &info, sym, symname);
handle_moddevtable(mod, &info, sym, symname);

2
scripts/mod/modpost.h
View File

@ -127,7 +127,7 @@ struct elf_info {
Elf_Section export_gpl_sec;
Elf_Section export_unused_gpl_sec;
Elf_Section export_gpl_future_sec;
const char *strtab;
char *strtab;
char *modinfo;
unsigned int modinfo_len;