ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooks
This patch adds THREAD_NOTIFY_COPY for calling registered handlers
during the copy_thread() function call. It also changes the VFP handler
to use a switch statement rather than if..else and ignore this event.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index bbf3da0..1c88bbd 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -104,12 +104,17 @@
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 @@
* 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;
}