Merge tag 'kbuild-fixes-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Move warnings about linux/export.h from W=1 to W=2

 - Fix structure type overrides in gendwarfksyms

* tag 'kbuild-fixes-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  gendwarfksyms: Fix structure type overrides
  kbuild: move warnings about linux/export.h from W=1 to W=2

Author: torvalds

Makefile

@@ -1832,12 +1832,9 @@ rustfmtcheck: rustfmt
 # Misc
 # ---------------------------------------------------------------------------
 
-# Run misc checks when ${KBUILD_EXTRA_WARN} contains 1
 PHONY += misc-check
-ifneq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
 misc-check:
 	$(Q)$(srctree)/scripts/misc-check
-endif
 
 all: misc-check
 

scripts/gendwarfksyms/gendwarfksyms.h

@@ -216,24 +216,14 @@ int cache_get(struct cache *cache, unsigned long key);
 void cache_init(struct cache *cache);
 void cache_free(struct cache *cache);
 
-static inline void __cache_mark_expanded(struct cache *cache, uintptr_t addr)
-{
-	cache_set(cache, addr, 1);
-}
-
-static inline bool __cache_was_expanded(struct cache *cache, uintptr_t addr)
-{
-	return cache_get(cache, addr) == 1;
-}
-
 static inline void cache_mark_expanded(struct cache *cache, void *addr)
 {
-	__cache_mark_expanded(cache, (uintptr_t)addr);
+	cache_set(cache, (unsigned long)addr, 1);
 }
 
 static inline bool cache_was_expanded(struct cache *cache, void *addr)
 {
-	return __cache_was_expanded(cache, (uintptr_t)addr);
+	return cache_get(cache, (unsigned long)addr) == 1;
 }
 
 /*

scripts/gendwarfksyms/types.c

@@ -333,37 +333,11 @@ static void calculate_version(struct version *version,
 	cache_free(&expansion_cache);
 }
 
-static void __type_expand(struct die *cache, struct type_expansion *type,
-			  bool recursive);
-
-static void type_expand_child(struct die *cache, struct type_expansion *type,
-			      bool recursive)
-{
-	struct type_expansion child;
-	char *name;
-
-	name = get_type_name(cache);
-	if (!name) {
-		__type_expand(cache, type, recursive);
-		return;
-	}
-
-	if (recursive && !__cache_was_expanded(&expansion_cache, cache->addr)) {
-		__cache_mark_expanded(&expansion_cache, cache->addr);
-		type_expansion_init(&child);
-		__type_expand(cache, &child, true);
-		type_map_add(name, &child);
-		type_expansion_free(&child);
-	}
-
-	type_expansion_append(type, name, name);
-}
-
-static void __type_expand(struct die *cache, struct type_expansion *type,
-			  bool recursive)
+static void __type_expand(struct die *cache, struct type_expansion *type)
 {
 	struct die_fragment *df;
 	struct die *child;
+	char *name;
 
 	list_for_each_entry(df, &cache->fragments, list) {
 		switch (df->type) {
@@ -379,7 +353,12 @@ static void __type_expand(struct die *cache, struct type_expansion *type,
 				error("unknown child: %" PRIxPTR,
 				      df->data.addr);
 
-			type_expand_child(child, type, recursive);
+			name = get_type_name(child);
+			if (name)
+				type_expansion_append(type, name, name);
+			else
+				__type_expand(child, type);
+
 			break;
 		case FRAGMENT_LINEBREAK:
 			/*
@@ -397,12 +376,17 @@ static void __type_expand(struct die *cache, struct type_expansion *type,
 	}
 }
 
-static void type_expand(struct die *cache, struct type_expansion *type,
-			bool recursive)
+static void type_expand(const char *name, struct die *cache,
+			struct type_expansion *type)
 {
+	const char *override;
+
 	type_expansion_init(type);
-	__type_expand(cache, type, recursive);
-	cache_free(&expansion_cache);
+
+	if (stable && kabi_get_type_string(name, &override))
+		type_parse(name, override, type);
+	else
+		__type_expand(cache, type);
 }
 
 static void type_parse(const char *name, const char *str,
@@ -416,8 +400,6 @@ static void type_parse(const char *name, const char *str,
 	if (!*str)
 		error("empty type string override for '%s'", name);
 
-	type_expansion_init(type);
-
 	for (pos = 0; str[pos]; ++pos) {
 		bool empty;
 		char marker = ' ';
@@ -478,7 +460,6 @@ static void type_parse(const char *name, const char *str,
 static void expand_type(struct die *cache, void *arg)
 {
 	struct type_expansion type;
-	const char *override;
 	char *name;
 
 	if (cache->mapped)
@@ -504,11 +485,7 @@ static void expand_type(struct die *cache, void *arg)
 
 	debug("%s", name);
 
-	if (stable && kabi_get_type_string(name, &override))
-		type_parse(name, override, &type);
-	else
-		type_expand(cache, &type, true);
-
+	type_expand(name, cache, &type);
 	type_map_add(name, &type);
 	type_expansion_free(&type);
 	free(name);
@@ -518,7 +495,6 @@ static void expand_symbol(struct symbol *sym, void *arg)
 {
 	struct type_expansion type;
 	struct version version;
-	const char *override;
 	struct die *cache;
 
 	/*
@@ -532,10 +508,7 @@ static void expand_symbol(struct symbol *sym, void *arg)
 	if (__die_map_get(sym->die_addr, DIE_SYMBOL, &cache))
 		return; /* We'll warn about missing CRCs later. */
 
-	if (stable && kabi_get_type_string(sym->name, &override))
-		type_parse(sym->name, override, &type);
-	else
-		type_expand(cache, &type, false);
+	type_expand(sym->name, cache, &type);
 
 	/* If the symbol already has a version, don't calculate it again. */
 	if (sym->state != SYMBOL_PROCESSED) {

scripts/misc-check

@@ -62,6 +62,15 @@ check_unnecessary_include_linux_export_h () {
 	xargs -r printf "%s: warning: EXPORT_SYMBOL() is not used, but #include <linux/export.h> is present\n" >&2
 }
 
-check_tracked_ignored_files
-check_missing_include_linux_export_h
-check_unnecessary_include_linux_export_h
+case "${KBUILD_EXTRA_WARN}" in
+*1*)
+	check_tracked_ignored_files
+	;;
+esac
+
+case "${KBUILD_EXTRA_WARN}" in
+*2*)
+	check_missing_include_linux_export_h
+	check_unnecessary_include_linux_export_h
+	;;
+esac