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authorDavid Woodhouse <dwmw2@infradead.org>2006-05-08 22:40:05 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2006-05-08 22:40:05 +0100
commit6f18a022fb311f07f3b32f2c0e1b5c9477dc4439 (patch)
tree5c0e66f14e02f53555bfc365098cc7e5eb85c343 /kernel/intermodule.c
parentRemove use of inter_module_crap in NOR flash chip drivers. (diff)
downloadlinux-dev-6f18a022fb311f07f3b32f2c0e1b5c9477dc4439.tar.xz
linux-dev-6f18a022fb311f07f3b32f2c0e1b5c9477dc4439.zip
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>
Diffstat (limited to '')
-rw-r--r--kernel/intermodule.c184
1 files changed, 0 insertions, 184 deletions
diff --git a/kernel/intermodule.c b/kernel/intermodule.c
deleted file mode 100644
index 55b1e5b85db9..000000000000
--- a/kernel/intermodule.c
+++ /dev/null
@@ -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");
-