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yaml
---
r: 75838
b: refs/heads/master
c: c63469a
h: refs/heads/master
v: v3
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Greg Kroah-Hartman committed Jan 25, 2008
1 parent 74b5bba commit 90f3804
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Showing 6 changed files with 105 additions and 103 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: cbe9c595f1de2e2a98403be2c14bfbc2486e84c4
refs/heads/master: c63469a3985a9771c18a916b8d42845d044ea0b1
1 change: 1 addition & 0 deletions trunk/drivers/base/Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ obj-$(CONFIG_FW_LOADER) += firmware_class.o
obj-$(CONFIG_NUMA) += node.o
obj-$(CONFIG_MEMORY_HOTPLUG_SPARSE) += memory.o
obj-$(CONFIG_SMP) += topology.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o

ifeq ($(CONFIG_DEBUG_DRIVER),y)
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9 changes: 9 additions & 0 deletions trunk/drivers/base/base.h
Original file line number Diff line number Diff line change
Expand Up @@ -73,3 +73,12 @@ extern char *make_class_name(const char *name, struct kobject *kobj);
extern int devres_release_all(struct device *dev);

extern struct kset *devices_kset;

#ifdef CONFIG_MODULES
extern void module_add_driver(struct module *mod, struct device_driver *drv);
extern void module_remove_driver(struct device_driver *drv);
#else
static inline void module_add_driver(struct module *mod,
struct device_driver *drv) { }
static inline void module_remove_driver(struct device_driver *drv) { }
#endif
94 changes: 94 additions & 0 deletions trunk/drivers/base/module.c
Original file line number Diff line number Diff line change
@@ -0,0 +1,94 @@
/*
* module.c - module sysfs fun for drivers
*
* This file is released under the GPLv2
*
*/
#include <linux/device.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/string.h>
#include "base.h"

static char *make_driver_name(struct device_driver *drv)
{
char *driver_name;

driver_name = kmalloc(strlen(drv->name) + strlen(drv->bus->name) + 2,
GFP_KERNEL);
if (!driver_name)
return NULL;

sprintf(driver_name, "%s:%s", drv->bus->name, drv->name);
return driver_name;
}

static void module_create_drivers_dir(struct module_kobject *mk)
{
if (!mk || mk->drivers_dir)
return;

mk->drivers_dir = kobject_create_and_add("drivers", &mk->kobj);
}

void module_add_driver(struct module *mod, struct device_driver *drv)
{
char *driver_name;
int no_warn;
struct module_kobject *mk = NULL;

if (!drv)
return;

if (mod)
mk = &mod->mkobj;
else if (drv->mod_name) {
struct kobject *mkobj;

/* Lookup built-in module entry in /sys/modules */
mkobj = kset_find_obj(module_kset, drv->mod_name);
if (mkobj) {
mk = container_of(mkobj, struct module_kobject, kobj);
/* remember our module structure */
drv->mkobj = mk;
/* kset_find_obj took a reference */
kobject_put(mkobj);
}
}

if (!mk)
return;

/* Don't check return codes; these calls are idempotent */
no_warn = sysfs_create_link(&drv->kobj, &mk->kobj, "module");
driver_name = make_driver_name(drv);
if (driver_name) {
module_create_drivers_dir(mk);
no_warn = sysfs_create_link(mk->drivers_dir, &drv->kobj,
driver_name);
kfree(driver_name);
}
}

void module_remove_driver(struct device_driver *drv)
{
struct module_kobject *mk = NULL;
char *driver_name;

if (!drv)
return;

sysfs_remove_link(&drv->kobj, "module");

if (drv->owner)
mk = &drv->owner->mkobj;
else if (drv->mkobj)
mk = drv->mkobj;
if (mk && mk->drivers_dir) {
driver_name = make_driver_name(drv);
if (driver_name) {
sysfs_remove_link(mk->drivers_dir, driver_name);
kfree(driver_name);
}
}
}
15 changes: 0 additions & 15 deletions trunk/include/linux/module.h
Original file line number Diff line number Diff line change
Expand Up @@ -609,21 +609,6 @@ static inline void module_remove_modinfo_attrs(struct module *mod)

#endif /* CONFIG_SYSFS */

#if defined(CONFIG_SYSFS) && defined(CONFIG_MODULES)

void module_add_driver(struct module *mod, struct device_driver *drv);
void module_remove_driver(struct device_driver *drv);

#else /* not both CONFIG_SYSFS && CONFIG_MODULES */

static inline void module_add_driver(struct module *mod, struct device_driver *drv)
{ }

static inline void module_remove_driver(struct device_driver *drv)
{ }

#endif

#define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)

/* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
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87 changes: 0 additions & 87 deletions trunk/kernel/module.c
Original file line number Diff line number Diff line change
Expand Up @@ -2501,93 +2501,6 @@ void print_modules(void)
printk("\n");
}

#ifdef CONFIG_SYSFS
static char *make_driver_name(struct device_driver *drv)
{
char *driver_name;

driver_name = kmalloc(strlen(drv->name) + strlen(drv->bus->name) + 2,
GFP_KERNEL);
if (!driver_name)
return NULL;

sprintf(driver_name, "%s:%s", drv->bus->name, drv->name);
return driver_name;
}

static void module_create_drivers_dir(struct module_kobject *mk)
{
if (!mk || mk->drivers_dir)
return;

mk->drivers_dir = kobject_create_and_add("drivers", &mk->kobj);
}

void module_add_driver(struct module *mod, struct device_driver *drv)
{
char *driver_name;
int no_warn;
struct module_kobject *mk = NULL;

if (!drv)
return;

if (mod)
mk = &mod->mkobj;
else if (drv->mod_name) {
struct kobject *mkobj;

/* Lookup built-in module entry in /sys/modules */
mkobj = kset_find_obj(module_kset, drv->mod_name);
if (mkobj) {
mk = container_of(mkobj, struct module_kobject, kobj);
/* remember our module structure */
drv->mkobj = mk;
/* kset_find_obj took a reference */
kobject_put(mkobj);
}
}

if (!mk)
return;

/* Don't check return codes; these calls are idempotent */
no_warn = sysfs_create_link(&drv->kobj, &mk->kobj, "module");
driver_name = make_driver_name(drv);
if (driver_name) {
module_create_drivers_dir(mk);
no_warn = sysfs_create_link(mk->drivers_dir, &drv->kobj,
driver_name);
kfree(driver_name);
}
}
EXPORT_SYMBOL(module_add_driver);

void module_remove_driver(struct device_driver *drv)
{
struct module_kobject *mk = NULL;
char *driver_name;

if (!drv)
return;

sysfs_remove_link(&drv->kobj, "module");

if (drv->owner)
mk = &drv->owner->mkobj;
else if (drv->mkobj)
mk = drv->mkobj;
if (mk && mk->drivers_dir) {
driver_name = make_driver_name(drv);
if (driver_name) {
sysfs_remove_link(mk->drivers_dir, driver_name);
kfree(driver_name);
}
}
}
EXPORT_SYMBOL(module_remove_driver);
#endif

#ifdef CONFIG_MODVERSIONS
/* Generate the signature for struct module here, too, for modversions. */
void struct_module(struct module *mod) { return; }
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