[rt] Refresh patches and re-enable

debian/config/defines

@@ -121,7 +121,7 @@ debug-info: true
 signed-code: false
 
 [featureset-rt_base]
-enabled: false
+enabled: true
 
 [description]
 part-long-up: This kernel is not suitable for SMP (multi-processor,

debian/patches/features/all/rt/printk-kill.patch

@@ -88,9 +88,9 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  #ifdef CONFIG_PRINTK
  DECLARE_WAIT_QUEUE_HEAD(log_wait);
  /* the next printk record to read by syslog(READ) or /proc/kmsg */
-@@ -1836,6 +1888,13 @@ asmlinkage int vprintk_emit(int facility
- 	int printed_len;
+@@ -1886,6 +1938,13 @@ asmlinkage int vprintk_emit(int facility
  	bool in_sched = false;
+ 	unsigned long flags;
  
 +	/*
 +	 * Fall back to early_printk if a debugging subsystem has
@@ -102,7 +102,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  	if (level == LOGLEVEL_SCHED) {
  		level = LOGLEVEL_DEFAULT;
  		in_sched = true;
-@@ -2017,26 +2076,6 @@ static bool suppress_message_printing(in
+@@ -2026,26 +2085,6 @@ static bool suppress_message_printing(in
  
  #endif /* CONFIG_PRINTK */
  

debian/patches/features/all/rt/x86-preempt-lazy.patch

@@ -24,8 +24,8 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  	select HAVE_PERF_USER_STACK_DUMP
 +	select HAVE_PREEMPT_LAZY
  	select HAVE_RCU_TABLE_FREE
+ 	select HAVE_RCU_TABLE_INVALIDATE	if HAVE_RCU_TABLE_FREE
  	select HAVE_REGS_AND_STACK_ACCESS_API
- 	select HAVE_RELIABLE_STACKTRACE		if X86_64 && UNWINDER_FRAME_POINTER && STACK_VALIDATION
 --- a/arch/x86/entry/common.c
 +++ b/arch/x86/entry/common.c
 @@ -133,7 +133,7 @@ static long syscall_trace_enter(struct p
@@ -76,7 +76,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  	call	preempt_schedule_irq
 --- a/arch/x86/entry/entry_64.S
 +++ b/arch/x86/entry/entry_64.S
-@@ -704,7 +704,23 @@ GLOBAL(swapgs_restore_regs_and_return_to
+@@ -704,7 +704,23 @@ retint_kernel:
  	bt	$9, EFLAGS(%rsp)		/* were interrupts off? */
  	jnc	1f
  0:	cmpl	$0, PER_CPU_VAR(__preempt_count)