sparc: Use generic init_task

Same code. Use the generic version.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: N"David S. Miller" <davem@davemloft.net>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: http://lkml.kernel.org/r/20120503085035.463573011@linutronix.de

arch/sparc/Kconfig

@@ -31,6 +31,7 @@ config SPARC
 	select GENERIC_PCI_IOMAP
 	select HAVE_NMI_WATCHDOG if SPARC64
 	select GENERIC_SMP_IDLE_THREAD
+	select HAVE_GENERIC_INIT_TASK
 
 config SPARC32
 	def_bool !64BIT

arch/sparc/Makefile

@@ -62,7 +62,6 @@ endif
 endif
 
 head-y                 := arch/sparc/kernel/head_$(BITS).o
-head-y                 += arch/sparc/kernel/init_task.o
 
 core-y                 += arch/sparc/kernel/
 core-y                 += arch/sparc/mm/ arch/sparc/math-emu/

arch/sparc/kernel/Makefile

@@ -6,7 +6,6 @@ asflags-y := -ansi
 ccflags-y := -Werror
 
 extra-y     := head_$(BITS).o
-extra-y     += init_task.o
 
 # Undefine sparc when processing vmlinux.lds - it is used
 # And teach CPP we are doing $(BITS) builds (for this case)

arch/sparc/kernel/init_task.c

-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
-
-/* .text section in head.S is aligned at 8k boundary and this gets linked
- * right after that so that the init_thread_union is aligned properly as well.
- * If this is not aligned on a 8k boundary, then you should change code
- * in etrap.S which assumes it.
- */
-union thread_union init_thread_union __init_task_data =
-	{ INIT_THREAD_INFO(init_task) };