Kbuild, lto: Drop .number postfixes in modpost

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>

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 1f1b1549f33f095d3268a75f52f1c882b5eb2c69..f91dd4565b81165658ebcb038ff9f8ac4d8ccbec 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -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);

diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index 51207e4d5f8bcae0add675e31cf579f28763d1d4..168b43dc0a59b6be4edea0fc5768fb2d63cfa440 100644 (file)
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -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;