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Subject[PATCH 2/3] genksyms: Do not expand internal types
Date
Consider structures, unions and enums defined in the source file as
internal and do not expand them. This way, changes to e.g. struct
serial_private in drivers/tty/serial/8250_pci.c will not affect the
checksum of the pciserial_* exports.
---
scripts/genksyms/genksyms.c | 3 ++-
scripts/genksyms/genksyms.h | 4 +++-
scripts/genksyms/lex.l | 8 ++++++++
scripts/genksyms/parse.y | 7 +++++++
4 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c
index 6d3fda0..8a10649 100644
--- a/scripts/genksyms/genksyms.c
+++ b/scripts/genksyms/genksyms.c
@@ -40,7 +40,8 @@ static struct symbol *symtab[HASH_BUCKETS];
static FILE *debugfile;

int cur_line = 1;
-char *cur_filename;
+char *cur_filename, *source_file;
+int in_source_file;

static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
flag_preserve, flag_warnings;
diff --git a/scripts/genksyms/genksyms.h b/scripts/genksyms/genksyms.h
index 7ec52ae..3bffdca 100644
--- a/scripts/genksyms/genksyms.h
+++ b/scripts/genksyms/genksyms.h
@@ -37,6 +37,7 @@ enum symbol_status {
struct string_list {
struct string_list *next;
enum symbol_type tag;
+ int in_source_file;
char *string;
};

@@ -57,7 +58,8 @@ typedef struct string_list **yystype;
#define YYSTYPE yystype

extern int cur_line;
-extern char *cur_filename;
+extern char *cur_filename, *source_file;
+extern int in_source_file;

struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact);
struct symbol *add_symbol(const char *name, enum symbol_type type,
diff --git a/scripts/genksyms/lex.l b/scripts/genksyms/lex.l
index 400ae06..f770071 100644
--- a/scripts/genksyms/lex.l
+++ b/scripts/genksyms/lex.l
@@ -116,6 +116,7 @@ MC_TOKEN ([~%^&*+=|<>/-]=)|(&&)|("||")|(->)|(<<)|(>>)
cur_node->tag = \
find_symbol(cur_node->string, SYM_ENUM_CONST, 1)?\
SYM_ENUM_CONST : SYM_NORMAL ; \
+ cur_node->in_source_file = in_source_file; \
} while (0)

#define APP _APP(yytext, yyleng)
@@ -166,6 +167,13 @@ repeat:
cur_filename = memcpy(xmalloc(e-file+1), file, e-file+1);
cur_line = atoi(yytext+2);

+ if (!source_file) {
+ source_file = xstrdup(cur_filename);
+ in_source_file = 1;
+ } else {
+ in_source_file = (strcmp(cur_filename, source_file) == 0);
+ }
+
goto repeat;
}

diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
index a783ad4..23c3999 100644
--- a/scripts/genksyms/parse.y
+++ b/scripts/genksyms/parse.y
@@ -58,6 +58,13 @@ static void record_compound(struct string_list **keyw,
enum symbol_type type)
{
struct string_list *b = *body, *i = *ident, *r;
+
+ if (i->in_source_file) {
+ remove_node(keyw);
+ (*ident)->tag = type;
+ remove_list(body, ident);
+ return;
+ }
r = copy_node(i); r->tag = type;
r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
add_symbol(i->string, type, b, is_extern);
--
1.7.6.1


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