aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/module.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c30
1 files changed, 11 insertions, 19 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 1016b75b026a..333fbcc96978 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -59,8 +59,6 @@
59#define CREATE_TRACE_POINTS 59#define CREATE_TRACE_POINTS
60#include <trace/events/module.h> 60#include <trace/events/module.h>
61 61
62EXPORT_TRACEPOINT_SYMBOL(module_get);
63
64#if 0 62#if 0
65#define DEBUGP printk 63#define DEBUGP printk
66#else 64#else
@@ -79,6 +77,10 @@ EXPORT_TRACEPOINT_SYMBOL(module_get);
79DEFINE_MUTEX(module_mutex); 77DEFINE_MUTEX(module_mutex);
80EXPORT_SYMBOL_GPL(module_mutex); 78EXPORT_SYMBOL_GPL(module_mutex);
81static LIST_HEAD(modules); 79static LIST_HEAD(modules);
80#ifdef CONFIG_KGDB_KDB
81struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */
82#endif /* CONFIG_KGDB_KDB */
83
82 84
83/* Block module loading/unloading? */ 85/* Block module loading/unloading? */
84int modules_disabled = 0; 86int modules_disabled = 0;
@@ -178,8 +180,6 @@ extern const struct kernel_symbol __start___ksymtab_gpl[];
178extern const struct kernel_symbol __stop___ksymtab_gpl[]; 180extern const struct kernel_symbol __stop___ksymtab_gpl[];
179extern const struct kernel_symbol __start___ksymtab_gpl_future[]; 181extern const struct kernel_symbol __start___ksymtab_gpl_future[];
180extern const struct kernel_symbol __stop___ksymtab_gpl_future[]; 182extern const struct kernel_symbol __stop___ksymtab_gpl_future[];
181extern const struct kernel_symbol __start___ksymtab_gpl_future[];
182extern const struct kernel_symbol __stop___ksymtab_gpl_future[];
183extern const unsigned long __start___kcrctab[]; 183extern const unsigned long __start___kcrctab[];
184extern const unsigned long __start___kcrctab_gpl[]; 184extern const unsigned long __start___kcrctab_gpl[];
185extern const unsigned long __start___kcrctab_gpl_future[]; 185extern const unsigned long __start___kcrctab_gpl_future[];
@@ -515,6 +515,9 @@ MODINFO_ATTR(srcversion);
515static char last_unloaded_module[MODULE_NAME_LEN+1]; 515static char last_unloaded_module[MODULE_NAME_LEN+1];
516 516
517#ifdef CONFIG_MODULE_UNLOAD 517#ifdef CONFIG_MODULE_UNLOAD
518
519EXPORT_TRACEPOINT_SYMBOL(module_get);
520
518/* Init the unload section of the module. */ 521/* Init the unload section of the module. */
519static void module_unload_init(struct module *mod) 522static void module_unload_init(struct module *mod)
520{ 523{
@@ -723,16 +726,8 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user,
723 return -EFAULT; 726 return -EFAULT;
724 name[MODULE_NAME_LEN-1] = '\0'; 727 name[MODULE_NAME_LEN-1] = '\0';
725 728
726 /* Create stop_machine threads since free_module relies on 729 if (mutex_lock_interruptible(&module_mutex) != 0)
727 * a non-failing stop_machine call. */ 730 return -EINTR;
728 ret = stop_machine_create();
729 if (ret)
730 return ret;
731
732 if (mutex_lock_interruptible(&module_mutex) != 0) {
733 ret = -EINTR;
734 goto out_stop;
735 }
736 731
737 mod = find_module(name); 732 mod = find_module(name);
738 if (!mod) { 733 if (!mod) {
@@ -792,8 +787,6 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user,
792 787
793 out: 788 out:
794 mutex_unlock(&module_mutex); 789 mutex_unlock(&module_mutex);
795out_stop:
796 stop_machine_destroy();
797 return ret; 790 return ret;
798} 791}
799 792
@@ -867,8 +860,7 @@ void module_put(struct module *module)
867 smp_wmb(); /* see comment in module_refcount */ 860 smp_wmb(); /* see comment in module_refcount */
868 __this_cpu_inc(module->refptr->decs); 861 __this_cpu_inc(module->refptr->decs);
869 862
870 trace_module_put(module, _RET_IP_, 863 trace_module_put(module, _RET_IP_);
871 __this_cpu_read(module->refptr->decs));
872 /* Maybe they're waiting for us to drop reference? */ 864 /* Maybe they're waiting for us to drop reference? */
873 if (unlikely(!module_is_live(module))) 865 if (unlikely(!module_is_live(module)))
874 wake_up_process(module->waiter); 866 wake_up_process(module->waiter);
@@ -1192,7 +1184,7 @@ struct module_notes_attrs {
1192 struct bin_attribute attrs[0]; 1184 struct bin_attribute attrs[0];
1193}; 1185};
1194 1186
1195static ssize_t module_notes_read(struct kobject *kobj, 1187static ssize_t module_notes_read(struct file *filp, struct kobject *kobj,
1196 struct bin_attribute *bin_attr, 1188 struct bin_attribute *bin_attr,
1197 char *buf, loff_t pos, size_t count) 1189 char *buf, loff_t pos, size_t count)
1198{ 1190{