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authorRusty Russell <rusty@rustcorp.com.au>2007-10-16 23:26:27 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:49 -0700
commitaf49d9248fca6f26cbdb01918334f71d9040df80 (patch)
tree5d6a7f4d5ca55ff17fbfc98cacac37be62c7a4a3
parentext4: show all mount options (diff)
downloadlinux-dev-af49d9248fca6f26cbdb01918334f71d9040df80.tar.xz
linux-dev-af49d9248fca6f26cbdb01918334f71d9040df80.zip
Remove "unsafe" from module struct
Adrian Bunk points out that "unsafe" was used to mark modules touched by the deprecated MOD_INC_USE_COUNT interface, which has long gone. It's time to remove the member from the module structure, as well. If you want a module which can't unload, don't register an exit function. (Vlad Yasevich says SCTP is now safe to unload, so just remove the __unsafe there). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--drivers/dma/iop-adma.c9
-rw-r--r--include/linux/module.h15
-rw-r--r--kernel/module.c21
-rw-r--r--net/sctp/protocol.c1
4 files changed, 9 insertions, 37 deletions
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 5a1d426744d6..e5c62b75f36f 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1446,21 +1446,20 @@ static struct platform_driver iop_adma_driver = {
static int __init iop_adma_init (void)
{
- /* it's currently unsafe to unload this module */
- /* if forced, worst case is that rmmod hangs */
- __unsafe(THIS_MODULE);
-
return platform_driver_register(&iop_adma_driver);
}
+/* it's currently unsafe to unload this module */
+#if 0
static void __exit iop_adma_exit (void)
{
platform_driver_unregister(&iop_adma_driver);
return;
}
+module_exit(iop_adma_exit);
+#endif
module_init(iop_adma_init);
-module_exit(iop_adma_exit);
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION("IOP ADMA Engine Driver");
diff --git a/include/linux/module.h b/include/linux/module.h
index b6a646cea1cb..5523e10fb2f0 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -312,9 +312,6 @@ struct module
/* Arch-specific module values */
struct mod_arch_specific arch;
- /* Am I unsafe to unload? */
- int unsafe;
-
unsigned int taints; /* same bits as kernel:tainted */
#ifdef CONFIG_GENERIC_BUG
@@ -441,16 +438,6 @@ static inline void __module_get(struct module *module)
__mod ? __mod->name : "kernel"; \
})
-#define __unsafe(mod) \
-do { \
- if (mod && !(mod)->unsafe) { \
- printk(KERN_WARNING \
- "Module %s cannot be unloaded due to unsafe usage in" \
- " %s:%u\n", (mod)->name, __FILE__, __LINE__); \
- (mod)->unsafe = 1; \
- } \
-} while(0)
-
/* For kallsyms to ask for address resolution. NULL means not found. */
const char *module_address_lookup(unsigned long addr,
unsigned long *symbolsize,
@@ -518,8 +505,6 @@ static inline void module_put(struct module *module)
#define module_name(mod) "kernel"
-#define __unsafe(mod)
-
/* For kallsyms to ask for address resolution. NULL means not found. */
static inline const char *module_address_lookup(unsigned long addr,
unsigned long *symbolsize,
diff --git a/kernel/module.c b/kernel/module.c
index db0ead0363e2..35246a61a7e9 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -692,8 +692,7 @@ sys_delete_module(const char __user *name_user, unsigned int flags)
}
/* If it has an init func, it must have an exit func to unload */
- if ((mod->init != NULL && mod->exit == NULL)
- || mod->unsafe) {
+ if (mod->init && !mod->exit) {
forced = try_force_unload(flags);
if (!forced) {
/* This module can't be removed */
@@ -741,11 +740,6 @@ static void print_unload_info(struct seq_file *m, struct module *mod)
seq_printf(m, "%s,", use->module_which_uses->name);
}
- if (mod->unsafe) {
- printed_something = 1;
- seq_printf(m, "[unsafe],");
- }
-
if (mod->init != NULL && mod->exit == NULL) {
printed_something = 1;
seq_printf(m, "[permanent],");
@@ -2011,15 +2005,10 @@ sys_init_module(void __user *umod,
buggy refcounters. */
mod->state = MODULE_STATE_GOING;
synchronize_sched();
- if (mod->unsafe)
- printk(KERN_ERR "%s: module is now stuck!\n",
- mod->name);
- else {
- module_put(mod);
- mutex_lock(&module_mutex);
- free_module(mod);
- mutex_unlock(&module_mutex);
- }
+ module_put(mod);
+ mutex_lock(&module_mutex);
+ free_module(mod);
+ mutex_unlock(&module_mutex);
return ret;
}
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 81b26c5ffd4b..f5cd96f5fe74 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1228,7 +1228,6 @@ SCTP_STATIC __init int sctp_init(void)
if (status)
goto err_v6_add_protocol;
- __unsafe(THIS_MODULE);
status = 0;
out:
return status;