kbuild: support loading extra symbols in modpost

[safe/jmp/linux-2.6] / scripts / mod / modpost.c

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 843f6fa..f8b42ab 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2019,6 +2019,11 @@ static void write_markers(const char *fname)
        write_if_changed(&buf, fname);
 }
 
+struct ext_sym_list {
+       struct ext_sym_list *next;
+       const char *file;
+};
+
 int main(int argc, char **argv)
 {
        struct module *mod;
@@ -2029,8 +2034,10 @@ int main(int argc, char **argv)
        char *markers_write = NULL;
        int opt;
        int err;
+       struct ext_sym_list *extsym_iter;
+       struct ext_sym_list *extsym_start = NULL;
 
-       while ((opt = getopt(argc, argv, "i:I:cmsSo:awM:K:")) != -1) {
+       while ((opt = getopt(argc, argv, "i:I:e:cmsSo:awM:K:")) != -1) {
                switch (opt) {
                case 'i':
                        kernel_read = optarg;
@@ -2042,6 +2049,14 @@ int main(int argc, char **argv)
                case 'c':
                        cross_build = 1;
                        break;
+               case 'e':
+                       external_module = 1;
+                       extsym_iter =
+                          NOFAIL(malloc(sizeof(*extsym_iter)));
+                       extsym_iter->next = extsym_start;
+                       extsym_iter->file = optarg;
+                       extsym_start = extsym_iter;
+                       break;
                case 'm':
                        modversions = 1;
                        break;
@@ -2075,6 +2090,12 @@ int main(int argc, char **argv)
                read_dump(kernel_read, 1);
        if (module_read)
                read_dump(module_read, 0);
+       while (extsym_start) {
+               read_dump(extsym_start->file, 0);
+               extsym_iter = extsym_start->next;
+               free(extsym_start);
+               extsym_start = extsym_iter;
+       }
 
        while (optind < argc)
                read_symbols(argv[optind++]);