117 lines
4.3 KiB
Diff
117 lines
4.3 KiB
Diff
From: Andreas Gruenbacher <agruen@suse.de>
|
|
Subject: genksyms: add --override flag
|
|
Patch-mainline: not yet
|
|
|
|
Add --override flag to genksyms to allow overriding types with old
|
|
definitions using the 'override' keyword. This is similar to -p --preserve,
|
|
but it doesn't abort the build if a symtype cannot be preserved
|
|
|
|
[mmarek: added KBUILD_OVERRIDE env var to set this globally for the entire
|
|
build]
|
|
---
|
|
scripts/Makefile.build | 1 +
|
|
scripts/genksyms/genksyms.c | 21 +++++++++++++++------
|
|
2 files changed, 16 insertions(+), 6 deletions(-)
|
|
|
|
--- a/scripts/Makefile.build
|
|
+++ b/scripts/Makefile.build
|
|
@@ -161,6 +161,7 @@ cmd_gensymtypes =
|
|
$(CPP) -D__GENKSYMS__ $(c_flags) $< | \
|
|
$(GENKSYMS) $(if $(1), -T $(2)) -a $(ARCH) \
|
|
$(if $(KBUILD_PRESERVE),-p) \
|
|
+ $(if $(KBUILD_OVERRIDE),-o) \
|
|
-r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
|
|
|
|
quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
|
|
--- a/scripts/genksyms/genksyms.c
|
|
+++ b/scripts/genksyms/genksyms.c
|
|
@@ -43,7 +43,7 @@ int cur_line = 1;
|
|
char *cur_filename;
|
|
|
|
static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
|
|
- flag_preserve, flag_warnings;
|
|
+ flag_override, flag_preserve, flag_warnings;
|
|
static const char *arch = "";
|
|
static const char *mod_prefix = "";
|
|
|
|
@@ -200,7 +200,7 @@ static struct symbol *__add_symbol(const
|
|
sym->is_declared = 1;
|
|
return sym;
|
|
} else if (!sym->is_declared) {
|
|
- if (sym->is_override && flag_preserve) {
|
|
+ if (sym->is_override && flag_override) {
|
|
print_location();
|
|
fprintf(stderr, "ignoring ");
|
|
print_type_name(type, name);
|
|
@@ -586,11 +586,13 @@ void export_symbol(const char *name)
|
|
struct symbol *n = sym->expansion_trail;
|
|
|
|
if (sym->status != STATUS_UNCHANGED) {
|
|
+ int fail = sym->is_override && flag_preserve;
|
|
+
|
|
if (!has_changed) {
|
|
print_location();
|
|
fprintf(stderr, "%s: %s: modversion "
|
|
"changed because of changes "
|
|
- "in ", flag_preserve ? "error" :
|
|
+ "in ", fail ? "error" :
|
|
"warning", name);
|
|
} else
|
|
fprintf(stderr, ", ");
|
|
@@ -598,7 +600,7 @@ void export_symbol(const char *name)
|
|
if (sym->status == STATUS_DEFINED)
|
|
fprintf(stderr, " (became defined)");
|
|
has_changed = 1;
|
|
- if (flag_preserve)
|
|
+ if (fail)
|
|
errors++;
|
|
}
|
|
sym->expansion_trail = 0;
|
|
@@ -655,6 +657,7 @@ static void genksyms_usage(void)
|
|
" -D, --dump Dump expanded symbol defs (for debugging only)\n"
|
|
" -r, --reference file Read reference symbols from a file\n"
|
|
" -T, --dump-types file Dump expanded types into file\n"
|
|
+ " -o, --override Allow to override reference modversions\n"
|
|
" -p, --preserve Preserve reference modversions or fail\n"
|
|
" -w, --warnings Enable warnings\n"
|
|
" -q, --quiet Disable warnings (default)\n"
|
|
@@ -666,6 +669,7 @@ static void genksyms_usage(void)
|
|
" -D Dump expanded symbol defs (for debugging only)\n"
|
|
" -r file Read reference symbols from a file\n"
|
|
" -T file Dump expanded types into file\n"
|
|
+ " -o Allow to override reference modversions\n"
|
|
" -p Preserve reference modversions or fail\n"
|
|
" -w Enable warnings\n"
|
|
" -q Disable warnings (default)\n"
|
|
@@ -690,15 +694,16 @@ int main(int argc, char **argv)
|
|
{"reference", 1, 0, 'r'},
|
|
{"dump-types", 1, 0, 'T'},
|
|
{"preserve", 0, 0, 'p'},
|
|
+ {"override", 0, 0, 'o'},
|
|
{"version", 0, 0, 'V'},
|
|
{"help", 0, 0, 'h'},
|
|
{0, 0, 0, 0}
|
|
};
|
|
|
|
- while ((o = getopt_long(argc, argv, "a:dwqVDr:T:ph",
|
|
+ while ((o = getopt_long(argc, argv, "a:dwqVDr:T:oph",
|
|
&long_opts[0], NULL)) != EOF)
|
|
#else /* __GNU_LIBRARY__ */
|
|
- while ((o = getopt(argc, argv, "a:dwqVDr:T:ph")) != EOF)
|
|
+ while ((o = getopt(argc, argv, "a:dwqVDr:T:oph")) != EOF)
|
|
#endif /* __GNU_LIBRARY__ */
|
|
switch (o) {
|
|
case 'a':
|
|
@@ -735,7 +740,11 @@ int main(int argc, char **argv)
|
|
return 1;
|
|
}
|
|
break;
|
|
+ case 'o':
|
|
+ flag_override = 1;
|
|
+ break;
|
|
case 'p':
|
|
+ flag_override = 1;
|
|
flag_preserve = 1;
|
|
break;
|
|
case 'h':
|