[PATCH] More 2.5.6 sync up.

Take advantage of new per-CPU scheme.

arch/ia64/ia32/ia32_entry.S

 #include <asm/asmmacro.h>
 #include <asm/offsets.h>
 #include <asm/signal.h>
+#include <asm/thread_info.h>
 
 #include "../kernel/minstate.h"
 
@@ -87,18 +88,21 @@ END(sys32_sigsuspend)
 
 GLOBAL_ENTRY(ia32_ret_from_clone)
 	PT_REGS_UNWIND_INFO(0)
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 	/*
 	 * We need to call schedule_tail() to complete the scheduling process.
 	 * Called by ia64_switch_to after do_fork()->copy_thread().  r8 contains the
 	 * address of the previously executing task.
 	 */
 	br.call.sptk.many rp=ia64_invoke_schedule_tail
-.ret1:	adds r2=IA64_TASK_PTRACE_OFFSET,r13
+.ret1:
+#endif
+	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
-	ld8 r2=[r2]
+	ld4 r2=[r2]
 	;;
 	mov r8=0
-	tbit.nz p6,p0=r2,PT_SYSCALLTRACE_BIT
+	tbit.nz p6,p0=r2,TIF_SYSCALL_TRACE
 (p6)	br.cond.spnt .ia32_strace_check_retval
 	;;					// prevent RAW on r8
 END(ia32_ret_from_clone)

arch/ia64/kernel/entry.S

@@ -622,7 +622,7 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	shr.u r18=r19,16	// get byte size of existing "dirty" partition
 	;;
 	mov r16=ar.bsp		// get existing backing store pointer
-	movl r17=PERCPU_ADDR+IA64_CPU_PHYS_STACKED_SIZE_P8_OFFSET
+	movl r17=THIS_CPU(ia64_phys_stacked_size_p8)
 	;;
 	ld4 r17=[r17]		// r17 = cpu_data->phys_stacked_size_p8
 (pKern)	br.cond.dpnt skip_rbs_switch
@@ -758,6 +758,7 @@ ENTRY(handle_syscall_error)
 	br.cond.sptk ia64_leave_kernel
 END(handle_syscall_error)
 
+#ifdef CONFIG_SMP
 	/*
 	 * Invoke schedule_tail(task) while preserving in0-in7, which may be needed
 	 * in case a system call gets restarted.
@@ -774,6 +775,8 @@ GLOBAL_ENTRY(ia64_invoke_schedule_tail)
 	br.ret.sptk.many rp
 END(ia64_invoke_schedule_tail)
 
+#endif /* CONFIG_SMP */
+
 #if __GNUC__ < 3
 
 	/*

arch/ia64/kernel/ia64_ksyms.c

@@ -59,7 +59,7 @@ EXPORT_SYMBOL(clear_page);
 
 #include <asm/processor.h>
 # ifndef CONFIG_NUMA
-EXPORT_SYMBOL(_cpu_data);
+EXPORT_SYMBOL(cpu_info);
 # endif
 EXPORT_SYMBOL(kernel_thread);
 

arch/ia64/kernel/ivt.S

@@ -645,7 +645,6 @@ ENTRY(break_fault)
 
 	mov r3=255
 	adds r15=-1024,r15			// r15 contains the syscall number---subtract 1024
-	adds r2=IA64_TASK_PTRACE_OFFSET,r13	// r2 = &current->ptrace
 	;;
 	cmp.geu p6,p7=r3,r15		// (syscall > 0 && syscall <= 1024+255) ?
 	movl r16=sys_call_table