uml: remove code made redundant by CHOOSE_MODE removal

This patch makes a number of simplifications enabled by the removal of
CHOOSE_MODE.  There were lots of functions that looked like

	int foo(args){
		foo_skas(args);
	}

The bodies of foo_skas are now folded into foo, and their declarations (and
sometimes entire header files) are deleted.

In addition, the union uml_pt_regs, which was a union between the tt and skas
register formats, is now a struct, with the tt-mode arm of the union being
removed.

It turns out that usr2_handler was unused, so it is gone.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 9 deletions

diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h
index be3ffec3a6a6..126df73f5401 100644
--- a/include/asm-um/processor-generic.h
+++ b/include/asm-um/processor-generic.h
@@ -32,12 +32,8 @@ struct thread_struct {
         unsigned long temp_stack;
         void *exec_buf;
         struct arch_thread arch;
-        union {
-                struct {
-                        jmp_buf switch_buf;
-                        int mm_count;
-                } skas;
-        } mode;
+        jmp_buf switch_buf;
+        int mm_count;
         struct {
                 int op;
                 union {
@@ -75,7 +71,10 @@ typedef struct {
 
 extern struct task_struct *alloc_task_struct(void);
 
-extern void release_thread(struct task_struct *);
+static inline void release_thread(struct task_struct *task)
+{
+}
+
 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 
 static inline void prepare_to_copy(struct task_struct *tsk)
@@ -125,8 +124,7 @@ extern struct cpuinfo_um cpu_data[];
 #endif
 
 
-#define KSTK_REG(tsk, reg) \
-        get_thread_reg(reg, &tsk->thread.mode.skas.switch_buf)
+#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
 #define get_wchan(p) (0)
 
 #endif