Currently, modpost manages unresolved in a singly liked list; it adds
a new node to the head, and traverses the list from new to old.
Use a doubly linked list to keep the order in the symbol table in the
ELF file.
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---
scripts/mod/modpost.c | 20 ++++++++++++++------
scripts/mod/modpost.h | 2 +-
2 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 1c7d2831e89d..e1eb188d6282 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -185,6 +185,8 @@ static struct module *new_module(const char *modname)
mod = NOFAIL(malloc(sizeof(*mod) + strlen(modname) + 1));
memset(mod, 0, sizeof(*mod));
+ INIT_LIST_HEAD(&mod->unresolved_symbols);
+
strcpy(mod->name, modname);
mod->is_vmlinux = (strcmp(modname, "vmlinux") == 0);
mod->gpl_compatible = true;
@@ -201,6 +203,7 @@ static struct module *new_module(const char *modname)
struct symbol {
struct symbol *next;
+ struct list_head list;
struct module *module;
unsigned int crc;
bool crc_valid;
@@ -255,8 +258,12 @@ static struct symbol *new_symbol(const char *name, struct module *module,
static void sym_add_unresolved(const char *name, struct module *mod, bool weak)
{
- mod->unres = alloc_symbol(name, mod->unres);
- mod->unres->weak = weak;
+ struct symbol *sym;
+
+ sym = alloc_symbol(name, NULL);
+ sym->weak = weak;
+
+ list_add_tail(&sym->list, &mod->unresolved_symbols);
}
static struct symbol *find_symbol(const char *name)
@@ -2147,7 +2154,7 @@ static void check_exports(struct module *mod)
{
struct symbol *s, *exp;
- for (s = mod->unres; s; s = s->next) {
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
const char *basename;
exp = find_symbol(s->name);
if (!exp) {
@@ -2268,7 +2275,7 @@ static void add_versions(struct buffer *b, struct module *mod)
buf_printf(b, "static const struct modversion_info ____versions[]\n");
buf_printf(b, "__used __section(\"__versions\") = {\n");
- for (s = mod->unres; s; s = s->next) {
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
if (!s->module)
continue;
if (!s->crc_valid) {
@@ -2294,13 +2301,14 @@ static void add_depends(struct buffer *b, struct module *mod)
int first = 1;
/* Clear ->seen flag of modules that own symbols needed by this. */
- for (s = mod->unres; s; s = s->next)
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
if (s->module)
s->module->seen = s->module->is_vmlinux;
+ }
buf_printf(b, "\n");
buf_printf(b, "MODULE_INFO(depends, \"");
- for (s = mod->unres; s; s = s->next) {
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
const char *p;
if (!s->module)
continue;
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index c3b5d2f0e2bb..6a90bfc08458 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -117,7 +117,7 @@ struct namespace_list {
struct module {
struct list_head list;
int gpl_compatible;
- struct symbol *unres;
+ struct list_head unresolved_symbols;
bool from_dump; /* true if module was loaded from *.symvers */
bool is_vmlinux;
bool seen;
--
2.32.0
