kobject: define common logging prefix

All log messages start with the prefix "kobject: ".
Deduplicate this by using the pr_fmt() facility.

This makes the very long log strings shorter.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20230311-kobject-warning-v1-1-1ebba4f71fb5@weissschuh.netSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lib/kobject.c

@@ -10,6 +10,8 @@
  * about using the kobject interface.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kobject.h>
 #include <linux/string.h>
 #include <linux/export.h>
@@ -127,7 +129,7 @@ static int fill_kobj_path(const struct kobject *kobj, char *path, int length)
 		*(path + --length) = '/';
 	}
 
-	pr_debug("kobject: '%s' (%p): %s: path = '%s'\n", kobject_name(kobj),
+	pr_debug("'%s' (%p): %s: path = '%s'\n", kobject_name(kobj),
 		 kobj, __func__, path);
 
 	return 0;
@@ -223,7 +225,7 @@ static int kobject_add_internal(struct kobject *kobj)
 		kobj->parent = parent;
 	}
 
-	pr_debug("kobject: '%s' (%p): %s: parent: '%s', set: '%s'\n",
+	pr_debug("'%s' (%p): %s: parent: '%s', set: '%s'\n",
 		 kobject_name(kobj), kobj, __func__,
 		 parent ? kobject_name(parent) : "<NULL>",
 		 kobj->kset ? kobject_name(&kobj->kset->kobj) : "<NULL>");
@@ -359,7 +361,7 @@ static __printf(3, 0) int kobject_add_varg(struct kobject *kobj,
 
 	retval = kobject_set_name_vargs(kobj, fmt, vargs);
 	if (retval) {
-		pr_err("kobject: can not set name properly!\n");
+		pr_err("can not set name properly!\n");
 		return retval;
 	}
 	kobj->parent = parent;
@@ -588,7 +590,7 @@ static void __kobject_del(struct kobject *kobj)
 
 	/* send "remove" if the caller did not do it but sent "add" */
 	if (kobj->state_add_uevent_sent && !kobj->state_remove_uevent_sent) {
-		pr_debug("kobject: '%s' (%p): auto cleanup 'remove' event\n",
+		pr_debug("'%s' (%p): auto cleanup 'remove' event\n",
 			 kobject_name(kobj), kobj);
 		kobject_uevent(kobj, KOBJ_REMOVE);
 	}
@@ -658,16 +660,16 @@ static void kobject_cleanup(struct kobject *kobj)
 	const struct kobj_type *t = get_ktype(kobj);
 	const char *name = kobj->name;
 
-	pr_debug("kobject: '%s' (%p): %s, parent %p\n",
+	pr_debug("'%s' (%p): %s, parent %p\n",
 		 kobject_name(kobj), kobj, __func__, kobj->parent);
 
 	if (t && !t->release)
-		pr_debug("kobject: '%s' (%p): does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst.\n",
+		pr_debug("'%s' (%p): does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst.\n",
 			 kobject_name(kobj), kobj);
 
 	/* remove from sysfs if the caller did not do it */
 	if (kobj->state_in_sysfs) {
-		pr_debug("kobject: '%s' (%p): auto cleanup kobject_del\n",
+		pr_debug("'%s' (%p): auto cleanup kobject_del\n",
 			 kobject_name(kobj), kobj);
 		__kobject_del(kobj);
 	} else {
@@ -676,14 +678,14 @@ static void kobject_cleanup(struct kobject *kobj)
 	}
 
 	if (t && t->release) {
-		pr_debug("kobject: '%s' (%p): calling ktype release\n",
+		pr_debug("'%s' (%p): calling ktype release\n",
 			 kobject_name(kobj), kobj);
 		t->release(kobj);
 	}
 
 	/* free name if we allocated it */
 	if (name) {
-		pr_debug("kobject: '%s': free name\n", name);
+		pr_debug("'%s': free name\n", name);
 		kfree_const(name);
 	}
 
@@ -703,8 +705,8 @@ static void kobject_release(struct kref *kref)
 	struct kobject *kobj = container_of(kref, struct kobject, kref);
 #ifdef CONFIG_DEBUG_KOBJECT_RELEASE
 	unsigned long delay = HZ + HZ * get_random_u32_below(4);
-	pr_info("kobject: '%s' (%p): %s, parent %p (delayed %ld)\n",
-		 kobject_name(kobj), kobj, __func__, kobj->parent, delay);
+	pr_info("'%s' (%p): %s, parent %p (delayed %ld)\n",
+		kobject_name(kobj), kobj, __func__, kobj->parent, delay);
 	INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);
 
 	schedule_delayed_work(&kobj->release, delay);
@@ -733,7 +735,7 @@ EXPORT_SYMBOL(kobject_put);
 
 static void dynamic_kobj_release(struct kobject *kobj)
 {
-	pr_debug("kobject: (%p): %s\n", kobj, __func__);
+	pr_debug("(%p): %s\n", kobj, __func__);
 	kfree(kobj);
 }
 
@@ -910,7 +912,7 @@ EXPORT_SYMBOL_GPL(kset_find_obj);
 static void kset_release(struct kobject *kobj)
 {
 	struct kset *kset = container_of(kobj, struct kset, kobj);
-	pr_debug("kobject: '%s' (%p): %s\n",
+	pr_debug("'%s' (%p): %s\n",
 		 kobject_name(kobj), kobj, __func__);
 	kfree(kset);
 }