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kbuild: do not do section mismatch checks on vmlinux in 2nd pass

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We already check and warn about section mismatches from vmlinux
(build as vmlinux.o) during first pass so skip the checks
during the 2nd pass where we process modules.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg 2007-07-20 22:36:56 +02:00
parent 80492cc797
commit 8d8d8289df
2 changed files with 20 additions and 12 deletions
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19
scripts/Makefile.modpost
View file

@ -56,23 +56,24 @@ _modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
# Step 2), invoke modpost # Step 2), invoke modpost
# Includes step 3,4 # Includes step 3,4
modpost = scripts/mod/modpost \
$(if $(CONFIG_MODVERSIONS),-m) \
$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,) \
$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
$(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
$(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w)
quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules
cmd_modpost = scripts/mod/modpost \ cmd_modpost = $(modpost) -s
$(if $(CONFIG_MODVERSIONS),-m) \
$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,) \
$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
$(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
$(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w)
PHONY += __modpost PHONY += __modpost
__modpost: $(modules:.ko=.o) FORCE __modpost: $(modules:.ko=.o) FORCE
$(call cmd,modpost) $(wildcard vmlinux) $(filter-out FORCE,$^) $(call cmd,modpost) $(wildcard vmlinux) $(filter-out FORCE,$^)
quiet_cmd_kernel-mod = MODPOST $@ quiet_cmd_kernel-mod = MODPOST $@
cmd_kernel-mod = $(cmd_modpost) $@ cmd_kernel-mod = $(modpost) $@
PHONY += vmlinux
vmlinux.o: FORCE vmlinux.o: FORCE
$(call cmd,kernel-mod) $(call cmd,kernel-mod)

13
scripts/mod/modpost.c
View file

@ -23,6 +23,8 @@ int have_vmlinux = 0;
static int all_versions = 0; static int all_versions = 0;
/* If we are modposting external module set to 1 */ /* If we are modposting external module set to 1 */
static int external_module = 0; static int external_module = 0;
/* Warn about section mismatch in vmlinux if set to 1 */
static int vmlinux_section_warnings = 1;
/* Only warn about unresolved symbols */ /* Only warn about unresolved symbols */
static int warn_unresolved = 0; static int warn_unresolved = 0;
/* How a symbol is exported */ /* How a symbol is exported */
@ -1257,8 +1259,10 @@ static void read_symbols(char *modname)
handle_modversions(mod, &info, sym, symname); handle_modversions(mod, &info, sym, symname);
handle_moddevtable(mod, &info, sym, symname); handle_moddevtable(mod, &info, sym, symname);
} }
check_sec_ref(mod, modname, &info, init_section, init_section_ref_ok); if (is_vmlinux(modname) && vmlinux_section_warnings) {
check_sec_ref(mod, modname, &info, exit_section, exit_section_ref_ok); check_sec_ref(mod, modname, &info, init_section, init_section_ref_ok);
check_sec_ref(mod, modname, &info, exit_section, exit_section_ref_ok);
}
version = get_modinfo(info.modinfo, info.modinfo_len, "version"); version = get_modinfo(info.modinfo, info.modinfo_len, "version");
if (version) if (version)
@ -1626,7 +1630,7 @@ int main(int argc, char **argv)
int opt; int opt;
int err; int err;
while ((opt = getopt(argc, argv, "i:I:mo:aw")) != -1) { while ((opt = getopt(argc, argv, "i:I:mso:aw")) != -1) {
switch(opt) { switch(opt) {
case 'i': case 'i':
kernel_read = optarg; kernel_read = optarg;
@ -1644,6 +1648,9 @@ int main(int argc, char **argv)
case 'a': case 'a':
all_versions = 1; all_versions = 1;
break; break;
case 's':
vmlinux_section_warnings = 0;
break;
case 'w': case 'w':
warn_unresolved = 1; warn_unresolved = 1;
break; break;