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-rw-r--r--arch/arm/kernel/process.c85
1 files changed, 45 insertions, 40 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 7df6e1aaa323..e1c77ee885a7 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -28,10 +28,12 @@
#include <linux/init.h>
#include <linux/cpu.h>
#include <linux/elfcore.h>
+#include <linux/pm.h>
#include <asm/leds.h>
#include <asm/processor.h>
#include <asm/system.h>
+#include <asm/thread_notify.h>
#include <asm/uaccess.h>
#include <asm/mach/time.h>
@@ -71,8 +73,36 @@ static int __init hlt_setup(char *__unused)
__setup("nohlt", nohlt_setup);
__setup("hlt", hlt_setup);
+void arm_machine_restart(char mode)
+{
+ /*
+ * Clean and disable cache, and turn off interrupts
+ */
+ cpu_proc_fin();
+
+ /*
+ * Tell the mm system that we are going to reboot -
+ * we may need it to insert some 1:1 mappings so that
+ * soft boot works.
+ */
+ setup_mm_for_reboot(mode);
+
+ /*
+ * Now call the architecture specific reboot code.
+ */
+ arch_reset(mode);
+
+ /*
+ * Whoops - the architecture was unable to reboot.
+ * Tell the user!
+ */
+ mdelay(1000);
+ printk("Reboot failed -- System halted\n");
+ while (1);
+}
+
/*
- * The following aren't currently used.
+ * Function pointers to optional machine specific functions
*/
void (*pm_idle)(void);
EXPORT_SYMBOL(pm_idle);
@@ -80,6 +110,10 @@ EXPORT_SYMBOL(pm_idle);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
+void (*arm_pm_restart)(char str) = arm_machine_restart;
+EXPORT_SYMBOL_GPL(arm_pm_restart);
+
+
/*
* This is our default idle handler. We need to disable
* interrupts here to ensure we don't miss a wakeup call.
@@ -151,33 +185,9 @@ void machine_power_off(void)
pm_power_off();
}
-
void machine_restart(char * __unused)
{
- /*
- * Clean and disable cache, and turn off interrupts
- */
- cpu_proc_fin();
-
- /*
- * Tell the mm system that we are going to reboot -
- * we may need it to insert some 1:1 mappings so that
- * soft boot works.
- */
- setup_mm_for_reboot(reboot_mode);
-
- /*
- * Now call the architecture specific reboot code.
- */
- arch_reset(reboot_mode);
-
- /*
- * Whoops - the architecture was unable to reboot.
- * Tell the user!
- */
- mdelay(1000);
- printk("Reboot failed -- System halted\n");
- while (1);
+ arm_pm_restart(reboot_mode);
}
void __show_regs(struct pt_regs *regs)
@@ -329,13 +339,9 @@ void exit_thread(void)
{
}
-static void default_fp_init(union fp_state *fp)
-{
- memset(fp, 0, sizeof(union fp_state));
-}
+ATOMIC_NOTIFIER_HEAD(thread_notify_head);
-void (*fp_init)(union fp_state *) = default_fp_init;
-EXPORT_SYMBOL(fp_init);
+EXPORT_SYMBOL_GPL(thread_notify_head);
void flush_thread(void)
{
@@ -344,22 +350,21 @@ void flush_thread(void)
memset(thread->used_cp, 0, sizeof(thread->used_cp));
memset(&tsk->thread.debug, 0, sizeof(struct debug_info));
+ memset(&thread->fpstate, 0, sizeof(union fp_state));
+
+ thread_notify(THREAD_NOTIFY_FLUSH, thread);
#if defined(CONFIG_IWMMXT)
iwmmxt_task_release(thread);
#endif
- fp_init(&thread->fpstate);
-#if defined(CONFIG_VFP)
- vfp_flush_thread(&thread->vfpstate);
-#endif
}
void release_thread(struct task_struct *dead_task)
{
-#if defined(CONFIG_VFP)
- vfp_release_thread(&task_thread_info(dead_task)->vfpstate);
-#endif
+ struct thread_info *thread = task_thread_info(dead_task);
+
+ thread_notify(THREAD_NOTIFY_RELEASE, thread);
#if defined(CONFIG_IWMMXT)
- iwmmxt_task_release(task_thread_info(dead_task));
+ iwmmxt_task_release(thread);
#endif
}