mirror of
https://github.com/Fishwaldo/Star64_linux.git
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Kbuild updates for v5.7
[Build system]
- add CONFIG_UNUSED_KSYMS_WHITELIST, which will be useful to define
a fixed set of export symbols for Generic Kernel Image (GKI)
- allow to run 'make dt_binding_check' without .config
- use full schema for checking DT examples in *.yaml files
- make modpost fail for missing MODULE_IMPORT_NS(), which makes more
sense because we know the produced modules are never loadable
- Remove unused 'AS' variable
[Kconfig]
- sanitize DEFCONFIG_LIST, and remove ARCH_DEFCONFIG from Kconfig files
- relax the 'imply' behavior so that symbols implied by y can become m
- make 'imply' obey 'depends on' in order to make 'imply' really weak
[Misc]
- add documentation on building the kernel with Clang/LLVM
- revive __HAVE_ARCH_STRLEN for 32bit sparc to use optimized strlen()
- fix warning from deb-pkg builds when CONFIG_DEBUG_INFO=n
- various script and Makefile cleanups
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Merge tag 'kbuild-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
"Build system:
- add CONFIG_UNUSED_KSYMS_WHITELIST, which will be useful to define a
fixed set of export symbols for Generic Kernel Image (GKI)
- allow to run 'make dt_binding_check' without .config
- use full schema for checking DT examples in *.yaml files
- make modpost fail for missing MODULE_IMPORT_NS(), which makes more
sense because we know the produced modules are never loadable
- Remove unused 'AS' variable
Kconfig:
- sanitize DEFCONFIG_LIST, and remove ARCH_DEFCONFIG from Kconfig
files
- relax the 'imply' behavior so that symbols implied by 'y' can
become 'm'
- make 'imply' obey 'depends on' in order to make 'imply' really weak
Misc:
- add documentation on building the kernel with Clang/LLVM
- revive __HAVE_ARCH_STRLEN for 32bit sparc to use optimized strlen()
- fix warning from deb-pkg builds when CONFIG_DEBUG_INFO=n
- various script and Makefile cleanups"
* tag 'kbuild-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
Makefile: Update kselftest help information
kbuild: deb-pkg: fix warning when CONFIG_DEBUG_INFO is unset
kbuild: add outputmakefile to no-dot-config-targets
kbuild: remove AS variable
net: wan: wanxl: refactor the firmware rebuild rule
net: wan: wanxl: use $(M68KCC) instead of $(M68KAS) for rebuilding firmware
net: wan: wanxl: use allow to pass CROSS_COMPILE_M68k for rebuilding firmware
kbuild: add comment about grouped target
kbuild: add -Wall to KBUILD_HOSTCXXFLAGS
kconfig: remove unused variable in qconf.cc
sparc: revive __HAVE_ARCH_STRLEN for 32bit sparc
kbuild: refactor Makefile.dtbinst more
kbuild: compute the dtbs_install destination more simply
Makefile: disallow data races on gcc-10 as well
kconfig: make 'imply' obey the direct dependency
kconfig: allow symbols implied by y to become m
net: drop_monitor: use IS_REACHABLE() to guard net_dm_hw_report()
modpost: return error if module is missing ns imports and MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n
modpost: rework and consolidate logging interface
kbuild: allow to run dt_binding_check without kernel configuration
...
This commit is contained in:
Linus Torvalds
commit
5b67fbfc32
35 changed files with 357 additions and 201 deletions
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@ -39,6 +39,8 @@ static int sec_mismatch_count = 0;
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static int sec_mismatch_fatal = 0;
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/* ignore missing files */
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static int ignore_missing_files;
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/* If set to 1, only warn (instead of error) about missing ns imports */
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static int allow_missing_ns_imports;
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enum export {
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export_plain, export_unused, export_gpl,
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@ -51,41 +53,33 @@ enum export {
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#define MODULE_NAME_LEN (64 - sizeof(Elf_Addr))
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#define PRINTF __attribute__ ((format (printf, 1, 2)))
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PRINTF void fatal(const char *fmt, ...)
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void __attribute__((format(printf, 2, 3)))
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modpost_log(enum loglevel loglevel, const char *fmt, ...)
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{
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va_list arglist;
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fprintf(stderr, "FATAL: ");
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switch (loglevel) {
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case LOG_WARN:
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fprintf(stderr, "WARNING: ");
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break;
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case LOG_ERROR:
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fprintf(stderr, "ERROR: ");
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break;
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case LOG_FATAL:
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fprintf(stderr, "FATAL: ");
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break;
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default: /* invalid loglevel, ignore */
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break;
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}
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fprintf(stderr, "modpost: ");
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va_start(arglist, fmt);
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vfprintf(stderr, fmt, arglist);
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va_end(arglist);
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exit(1);
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}
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PRINTF void warn(const char *fmt, ...)
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{
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va_list arglist;
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fprintf(stderr, "WARNING: ");
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va_start(arglist, fmt);
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vfprintf(stderr, fmt, arglist);
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va_end(arglist);
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}
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PRINTF void merror(const char *fmt, ...)
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{
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va_list arglist;
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fprintf(stderr, "ERROR: ");
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va_start(arglist, fmt);
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vfprintf(stderr, fmt, arglist);
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va_end(arglist);
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if (loglevel == LOG_FATAL)
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exit(1);
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}
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static inline bool strends(const char *str, const char *postfix)
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@ -113,7 +107,7 @@ static int is_vmlinux(const char *modname)
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void *do_nofail(void *ptr, const char *expr)
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{
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if (!ptr)
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fatal("modpost: Memory allocation failure: %s.\n", expr);
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fatal("Memory allocation failure: %s.\n", expr);
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return ptr;
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}
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@ -2022,7 +2016,7 @@ static void read_symbols(const char *modname)
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license = get_modinfo(&info, "license");
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if (!license && !is_vmlinux(modname))
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warn("modpost: missing MODULE_LICENSE() in %s\n"
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warn("missing MODULE_LICENSE() in %s\n"
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"see include/linux/module.h for "
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"more information\n", modname);
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while (license) {
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@ -2153,15 +2147,15 @@ static void check_for_gpl_usage(enum export exp, const char *m, const char *s)
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switch (exp) {
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case export_gpl:
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fatal("modpost: GPL-incompatible module %s%s "
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fatal("GPL-incompatible module %s%s "
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"uses GPL-only symbol '%s'\n", m, e, s);
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break;
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case export_unused_gpl:
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fatal("modpost: GPL-incompatible module %s%s "
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fatal("GPL-incompatible module %s%s "
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"uses GPL-only symbol marked UNUSED '%s'\n", m, e, s);
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break;
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case export_gpl_future:
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warn("modpost: GPL-incompatible module %s%s "
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warn("GPL-incompatible module %s%s "
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"uses future GPL-only symbol '%s'\n", m, e, s);
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break;
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case export_plain:
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@ -2179,7 +2173,7 @@ static void check_for_unused(enum export exp, const char *m, const char *s)
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switch (exp) {
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case export_unused:
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case export_unused_gpl:
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warn("modpost: module %s%s "
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warn("module %s%s "
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"uses symbol '%s' marked UNUSED\n", m, e, s);
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break;
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default:
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@ -2198,14 +2192,11 @@ static int check_exports(struct module *mod)
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exp = find_symbol(s->name);
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if (!exp || exp->module == mod) {
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if (have_vmlinux && !s->weak) {
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if (warn_unresolved) {
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warn("\"%s\" [%s.ko] undefined!\n",
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s->name, mod->name);
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} else {
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merror("\"%s\" [%s.ko] undefined!\n",
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s->name, mod->name);
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modpost_log(warn_unresolved ? LOG_WARN : LOG_ERROR,
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"\"%s\" [%s.ko] undefined!\n",
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s->name, mod->name);
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if (!warn_unresolved)
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err = 1;
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}
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}
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continue;
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}
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@ -2217,8 +2208,11 @@ static int check_exports(struct module *mod)
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if (exp->namespace &&
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!module_imports_namespace(mod, exp->namespace)) {
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warn("module %s uses symbol %s from namespace %s, but does not import it.\n",
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basename, exp->name, exp->namespace);
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modpost_log(allow_missing_ns_imports ? LOG_WARN : LOG_ERROR,
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"module %s uses symbol %s from namespace %s, but does not import it.\n",
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basename, exp->name, exp->namespace);
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if (!allow_missing_ns_imports)
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err = 1;
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add_namespace(&mod->missing_namespaces, exp->namespace);
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}
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@ -2565,7 +2559,7 @@ int main(int argc, char **argv)
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struct ext_sym_list *extsym_iter;
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struct ext_sym_list *extsym_start = NULL;
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while ((opt = getopt(argc, argv, "i:e:mnsT:o:awEd:")) != -1) {
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while ((opt = getopt(argc, argv, "i:e:mnsT:o:awENd:")) != -1) {
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switch (opt) {
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case 'i':
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kernel_read = optarg;
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@ -2603,6 +2597,9 @@ int main(int argc, char **argv)
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case 'E':
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sec_mismatch_fatal = 1;
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break;
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case 'N':
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allow_missing_ns_imports = 1;
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break;
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case 'd':
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missing_namespace_deps = optarg;
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break;
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@ -2658,7 +2655,7 @@ int main(int argc, char **argv)
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if (dump_write)
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write_dump(dump_write);
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if (sec_mismatch_count && sec_mismatch_fatal)
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fatal("modpost: Section mismatches detected.\n"
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fatal("Section mismatches detected.\n"
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"Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n");
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for (n = 0; n < SYMBOL_HASH_SIZE; n++) {
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struct symbol *s;
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