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-rw-r--r--scripts/genksyms/genksyms.c34
-rw-r--r--scripts/genksyms/genksyms.h1
2 files changed, 31 insertions, 4 deletions
diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c
index ddac1746908..3a8297b5184 100644
--- a/scripts/genksyms/genksyms.c
+++ b/scripts/genksyms/genksyms.c
@@ -191,11 +191,26 @@ struct symbol *__add_symbol(const char *name, enum symbol_type type,
/* fall through */ ;
else if (sym->type == type &&
equal_list(sym->defn, defn)) {
+ if (!sym->is_declared && sym->is_override) {
+ print_location();
+ print_type_name(type, name);
+ fprintf(stderr, " modversion is "
+ "unchanged\n");
+ }
sym->is_declared = 1;
return sym;
} else if (!sym->is_declared) {
- status = is_unknown_symbol(sym) ?
- STATUS_DEFINED : STATUS_MODIFIED;
+ if (sym->is_override && flag_preserve) {
+ print_location();
+ fprintf(stderr, "ignoring ");
+ print_type_name(type, name);
+ fprintf(stderr, " modversion change\n");
+ sym->is_declared = 1;
+ return sym;
+ } else {
+ status = is_unknown_symbol(sym) ?
+ STATUS_DEFINED : STATUS_MODIFIED;
+ }
} else {
error_with_pos("redefinition of %s", name);
return sym;
@@ -229,6 +244,7 @@ struct symbol *__add_symbol(const char *name, enum symbol_type type,
sym->is_declared = !is_reference;
sym->status = status;
+ sym->is_override = 0;
if (flag_debug) {
fprintf(debugfile, "Defn for %s %s == <",
@@ -348,9 +364,16 @@ static void read_reference(FILE *f)
while (!feof(f)) {
struct string_list *defn = NULL;
struct string_list *sym, *def;
- int is_extern = 0;
+ int is_extern = 0, is_override = 0;
+ struct symbol *subsym;
sym = read_node(f);
+ if (sym && sym->tag == SYM_NORMAL &&
+ !strcmp(sym->string, "override")) {
+ is_override = 1;
+ free_node(sym);
+ sym = read_node(f);
+ }
if (!sym)
continue;
def = read_node(f);
@@ -365,8 +388,9 @@ static void read_reference(FILE *f)
defn = def;
def = read_node(f);
}
- add_reference_symbol(xstrdup(sym->string), sym->tag,
+ subsym = add_reference_symbol(xstrdup(sym->string), sym->tag,
defn, is_extern);
+ subsym->is_override = is_override;
free_node(sym);
}
}
@@ -743,6 +767,8 @@ int main(int argc, char **argv)
while (visited_symbols != (struct symbol *)-1L) {
struct symbol *sym = visited_symbols;
+ if (sym->is_override)
+ fputs("override ", dumpfile);
if (sym->type != SYM_NORMAL) {
putc(symbol_type_name[sym->type][0], dumpfile);
putc('#', dumpfile);
diff --git a/scripts/genksyms/genksyms.h b/scripts/genksyms/genksyms.h
index 2831158426c..25c4d40cefc 100644
--- a/scripts/genksyms/genksyms.h
+++ b/scripts/genksyms/genksyms.h
@@ -49,6 +49,7 @@ struct symbol {
int is_extern;
int is_declared;
enum symbol_status status;
+ int is_override;
};
typedef struct string_list **yystype;