Finally remove the obnoxious inter_module_xxx()

This was already a bad plan when I argued against adding it in the first
place. Good riddance.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

include/linux/module.h

@@ -557,13 +557,4 @@ static inline void module_remove_driver(struct device_driver *driver)
 
 #define __MODULE_STRING(x) __stringify(x)
 
-/* Use symbol_get and symbol_put instead.  You'll thank me. */
-#define HAVE_INTER_MODULE
-extern void __deprecated inter_module_register(const char *,
-		struct module *, const void *);
-extern void __deprecated inter_module_unregister(const char *);
-extern const void * __deprecated inter_module_get_request(const char *,
-		const char *);
-extern void __deprecated inter_module_put(const char *);
-
 #endif /* _LINUX_MODULE_H */

init/Kconfig

@@ -389,9 +389,6 @@ config SLOB
 	default !SLAB
 	bool
 
-config OBSOLETE_INTERMODULE
-	tristate
-
 menu "Loadable module support"
 
 config MODULES

kernel/Makefile

@@ -20,7 +20,6 @@ obj-$(CONFIG_SMP) += cpu.o spinlock.o
 obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
 obj-$(CONFIG_UID16) += uid16.o
 obj-$(CONFIG_MODULES) += module.o
-obj-$(CONFIG_OBSOLETE_INTERMODULE) += intermodule.o
 obj-$(CONFIG_KALLSYMS) += kallsyms.o
 obj-$(CONFIG_PM) += power/
 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o

kernel/intermodule.c

@@ -1,184 +0,0 @@
-/* Deprecated, do not use.  Moved from module.c to here. --RR */
-
-/* Written by Keith Owens <kaos@ocs.com.au> Oct 2000 */
-#include <linux/module.h>
-#include <linux/kmod.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-
-/* inter_module functions are always available, even when the kernel is
- * compiled without modules.  Consumers of inter_module_xxx routines
- * will always work, even when both are built into the kernel, this
- * approach removes lots of #ifdefs in mainline code.
- */
-
-static struct list_head ime_list = LIST_HEAD_INIT(ime_list);
-static DEFINE_SPINLOCK(ime_lock);
-static int kmalloc_failed;
-
-struct inter_module_entry {
-	struct list_head list;
-	const char *im_name;
-	struct module *owner;
-	const void *userdata;
-};
-
-/**
- * inter_module_register - register a new set of inter module data.
- * @im_name: an arbitrary string to identify the data, must be unique
- * @owner: module that is registering the data, always use THIS_MODULE
- * @userdata: pointer to arbitrary userdata to be registered
- *
- * Description: Check that the im_name has not already been registered,
- * complain if it has.  For new data, add it to the inter_module_entry
- * list.
- */
-void inter_module_register(const char *im_name, struct module *owner, const void *userdata)
-{
-	struct list_head *tmp;
-	struct inter_module_entry *ime, *ime_new;
-
-	if (!(ime_new = kzalloc(sizeof(*ime), GFP_KERNEL))) {
-		/* Overloaded kernel, not fatal */
-		printk(KERN_ERR
-			"Aiee, inter_module_register: cannot kmalloc entry for '%s'\n",
-			im_name);
-		kmalloc_failed = 1;
-		return;
-	}
-	ime_new->im_name = im_name;
-	ime_new->owner = owner;
-	ime_new->userdata = userdata;
-
-	spin_lock(&ime_lock);
-	list_for_each(tmp, &ime_list) {
-		ime = list_entry(tmp, struct inter_module_entry, list);
-		if (strcmp(ime->im_name, im_name) == 0) {
-			spin_unlock(&ime_lock);
-			kfree(ime_new);
-			/* Program logic error, fatal */
-			printk(KERN_ERR "inter_module_register: duplicate im_name '%s'", im_name);
-			BUG();
-		}
-	}
-	list_add(&(ime_new->list), &ime_list);
-	spin_unlock(&ime_lock);
-}
-
-/**
- * inter_module_unregister - unregister a set of inter module data.
- * @im_name: an arbitrary string to identify the data, must be unique
- *
- * Description: Check that the im_name has been registered, complain if
- * it has not.  For existing data, remove it from the
- * inter_module_entry list.
- */
-void inter_module_unregister(const char *im_name)
-{
-	struct list_head *tmp;
-	struct inter_module_entry *ime;
-
-	spin_lock(&ime_lock);
-	list_for_each(tmp, &ime_list) {
-		ime = list_entry(tmp, struct inter_module_entry, list);
-		if (strcmp(ime->im_name, im_name) == 0) {
-			list_del(&(ime->list));
-			spin_unlock(&ime_lock);
-			kfree(ime);
-			return;
-		}
-	}
-	spin_unlock(&ime_lock);
-	if (kmalloc_failed) {
-		printk(KERN_ERR
-			"inter_module_unregister: no entry for '%s', "
-			"probably caused by previous kmalloc failure\n",
-			im_name);
-		return;
-	}
-	else {
-		/* Program logic error, fatal */
-		printk(KERN_ERR "inter_module_unregister: no entry for '%s'", im_name);
-		BUG();
-	}
-}
-
-/**
- * inter_module_get - return arbitrary userdata from another module.
- * @im_name: an arbitrary string to identify the data, must be unique
- *
- * Description: If the im_name has not been registered, return NULL.
- * Try to increment the use count on the owning module, if that fails
- * then return NULL.  Otherwise return the userdata.
- */
-static const void *inter_module_get(const char *im_name)
-{
-	struct list_head *tmp;
-	struct inter_module_entry *ime;
-	const void *result = NULL;
-
-	spin_lock(&ime_lock);
-	list_for_each(tmp, &ime_list) {
-		ime = list_entry(tmp, struct inter_module_entry, list);
-		if (strcmp(ime->im_name, im_name) == 0) {
-			if (try_module_get(ime->owner))
-				result = ime->userdata;
-			break;
-		}
-	}
-	spin_unlock(&ime_lock);
-	return(result);
-}
-
-/**
- * inter_module_get_request - im get with automatic request_module.
- * @im_name: an arbitrary string to identify the data, must be unique
- * @modname: module that is expected to register im_name
- *
- * Description: If inter_module_get fails, do request_module then retry.
- */
-const void *inter_module_get_request(const char *im_name, const char *modname)
-{
-	const void *result = inter_module_get(im_name);
-	if (!result) {
-		request_module("%s", modname);
-		result = inter_module_get(im_name);
-	}
-	return(result);
-}
-
-/**
- * inter_module_put - release use of data from another module.
- * @im_name: an arbitrary string to identify the data, must be unique
- *
- * Description: If the im_name has not been registered, complain,
- * otherwise decrement the use count on the owning module.
- */
-void inter_module_put(const char *im_name)
-{
-	struct list_head *tmp;
-	struct inter_module_entry *ime;
-
-	spin_lock(&ime_lock);
-	list_for_each(tmp, &ime_list) {
-		ime = list_entry(tmp, struct inter_module_entry, list);
-		if (strcmp(ime->im_name, im_name) == 0) {
-			if (ime->owner)
-				module_put(ime->owner);
-			spin_unlock(&ime_lock);
-			return;
-		}
-	}
-	spin_unlock(&ime_lock);
-	printk(KERN_ERR "inter_module_put: no entry for '%s'", im_name);
-	BUG();
-}
-
-EXPORT_SYMBOL(inter_module_register);
-EXPORT_SYMBOL(inter_module_unregister);
-EXPORT_SYMBOL(inter_module_get_request);
-EXPORT_SYMBOL(inter_module_put);
-
-MODULE_LICENSE("GPL");
-