Initial file dump from open source releaseHEADmaster

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/include/asm/switch_to.h b/arch/arm/include/asm/switch_to.h
new file mode 100644
index 00000000..63ca408d
--- /dev/null
+++ b/arch/arm/include/asm/switch_to.h
@@ -0,0 +1,25 @@
+#ifndef __ASM_ARM_SWITCH_TO_H
+#define __ASM_ARM_SWITCH_TO_H
+
+#include <linux/thread_info.h>
+
+/*
+ * switch_to(prev, next) should switch from task `prev' to `next'
+ * `prev' will never be the same as `next'.  schedule() itself
+ * contains the memory barrier to tell GCC not to cache `current'.
+ */
+extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *);
+#if defined(CONFIG_SPRD_DEBUG_CPU_RATE) && defined(CONFIG_SPRD_DEBUG)
+extern void update_cpu_usage(struct task_struct *prev, struct task_struct *next);
+#define sprd_update_cpu_usage(prev, next)	update_cpu_usage(prev, next)
+#else
+#define sprd_update_cpu_usage(prev, next)
+#endif
+
+#define switch_to(prev,next,last)					\
+do {									\
+	sprd_update_cpu_usage(prev, next);				\
+	last = __switch_to(prev,task_thread_info(prev), task_thread_info(next));	\
+} while (0)
+
+#endif /* __ASM_ARM_SWITCH_TO_H */