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-rw-r--r--arch/arm/include/asm/thread_notify.h1
-rw-r--r--arch/arm/kernel/process.c2
-rw-r--r--arch/arm/vfp/vfpmodule.c22
3 files changed, 18 insertions, 7 deletions
diff --git a/arch/arm/include/asm/thread_notify.h b/arch/arm/include/asm/thread_notify.h
index c4391ba2035..1dc98067589 100644
--- a/arch/arm/include/asm/thread_notify.h
+++ b/arch/arm/include/asm/thread_notify.h
@@ -43,6 +43,7 @@ static inline void thread_notify(unsigned long rc, struct thread_info *thread)
#define THREAD_NOTIFY_FLUSH 0
#define THREAD_NOTIFY_EXIT 1
#define THREAD_NOTIFY_SWITCH 2
+#define THREAD_NOTIFY_COPY 3
#endif
#endif
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 94bbedbed63..5e1e5419722 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -372,6 +372,8 @@ copy_thread(unsigned long clone_flags, unsigned long stack_start,
if (clone_flags & CLONE_SETTLS)
thread->tp_value = regs->ARM_r3;
+ thread_notify(THREAD_NOTIFY_COPY, thread);
+
return 0;
}
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index bbf3da012af..1c88bbdfd34 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -104,12 +104,17 @@ static void vfp_thread_exit(struct thread_info *thread)
static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
{
struct thread_info *thread = v;
+ u32 fpexc;
+#ifdef CONFIG_SMP
+ unsigned int cpu;
+#endif
- if (likely(cmd == THREAD_NOTIFY_SWITCH)) {
- u32 fpexc = fmrx(FPEXC);
+ switch (cmd) {
+ case THREAD_NOTIFY_SWITCH:
+ fpexc = fmrx(FPEXC);
#ifdef CONFIG_SMP
- unsigned int cpu = thread->cpu;
+ cpu = thread->cpu;
/*
* On SMP, if VFP is enabled, save the old state in
@@ -134,13 +139,16 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
* old state.
*/
fmxr(FPEXC, fpexc & ~FPEXC_EN);
- return NOTIFY_DONE;
- }
+ break;
- if (cmd == THREAD_NOTIFY_FLUSH)
+ case THREAD_NOTIFY_FLUSH:
vfp_thread_flush(thread);
- else
+ break;
+
+ case THREAD_NOTIFY_EXIT:
vfp_thread_exit(thread);
+ break;
+ }
return NOTIFY_DONE;
}