Merge branches 'devel-stable', 'entry', 'fixes', 'mach-types', 'misc' and 'smp-hotplug' into for-linus

arch/arm/kernel/entry-common.S

@@ -35,12 +35,11 @@ ret_fast_syscall:
 	ldr	r1, [tsk, #TI_FLAGS]
 	tst	r1, #_TIF_WORK_MASK
 	bne	fast_work_pending
-#if defined(CONFIG_IRQSOFF_TRACER)
 	asm_trace_hardirqs_on
-#endif
 
 	/* perform architecture specific actions before user return */
 	arch_ret_to_user r1, lr
+	ct_user_enter
 
 	restore_user_regs fast = 1, offset = S_OFF
  UNWIND(.fnend		)
@@ -71,11 +70,11 @@ ENTRY(ret_to_user_from_irq)
 	tst	r1, #_TIF_WORK_MASK
 	bne	work_pending
 no_work_pending:
-#if defined(CONFIG_IRQSOFF_TRACER)
 	asm_trace_hardirqs_on
-#endif
+
 	/* perform architecture specific actions before user return */
 	arch_ret_to_user r1, lr
+	ct_user_enter save = 0
 
 	restore_user_regs fast = 0, offset = 0
 ENDPROC(ret_to_user_from_irq)
@@ -276,7 +275,13 @@ ENDPROC(ftrace_graph_caller_old)
  */
 
 .macro mcount_enter
+/*
+ * This pad compensates for the push {lr} at the call site.  Note that we are
+ * unable to unwind through a function which does not otherwise save its lr.
+ */
+ UNWIND(.pad	#4)
 	stmdb	sp!, {r0-r3, lr}
+ UNWIND(.save	{r0-r3, lr})
 .endm
 
 .macro mcount_get_lr reg
@@ -289,6 +294,7 @@ ENDPROC(ftrace_graph_caller_old)
 .endm
 
 ENTRY(__gnu_mcount_nc)
+UNWIND(.fnstart)
 #ifdef CONFIG_DYNAMIC_FTRACE
 	mov	ip, lr
 	ldmia	sp!, {lr}
@@ -296,17 +302,22 @@ ENTRY(__gnu_mcount_nc)
 #else
 	__mcount
 #endif
+UNWIND(.fnend)
 ENDPROC(__gnu_mcount_nc)
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 ENTRY(ftrace_caller)
+UNWIND(.fnstart)
 	__ftrace_caller
+UNWIND(.fnend)
 ENDPROC(ftrace_caller)
 #endif
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 ENTRY(ftrace_graph_caller)
+UNWIND(.fnstart)
 	__ftrace_graph_caller
+UNWIND(.fnend)
 ENDPROC(ftrace_graph_caller)
 #endif
 
@@ -394,6 +405,7 @@ ENTRY(vector_swi)
 	mcr	p15, 0, ip, c1, c0		@ update control register
 #endif
 	enable_irq
+	ct_user_exit
 
 	get_thread_info tsk
 	adr	tbl, sys_call_table		@ load syscall table pointer