1 files changed, 0 insertions, 96 deletions
diff --git a/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch b/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch
deleted file mode 100644
index 2b023a452..000000000
--- a/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch
+++ /dev/null
@@ -1,96 +0,0 @@
-From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
-Date: Fri, 4 Aug 2017 18:31:00 +0200
-Subject: [PATCH] hotplug: duct-tape RT-rwlock usage for non-RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz
-
-This type is only available on -RT. We need to craft something for
-non-RT. Since the only migrate_disable() user is -RT only, there is no
-damage.
-
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- kernel/cpu.c |   14 +++++++++++++-
- 1 file changed, 13 insertions(+), 1 deletion(-)
-
---- a/kernel/cpu.c
-+++ b/kernel/cpu.c
-@@ -76,7 +76,7 @@ static DEFINE_PER_CPU(struct cpuhp_cpu_s
- 	.fail = CPUHP_INVALID,
- };
- 
--#ifdef CONFIG_HOTPLUG_CPU
-+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PREEMPT_RT_FULL)
- static DEFINE_PER_CPU(struct rt_rw_lock, cpuhp_pin_lock) = \
- 	__RWLOCK_RT_INITIALIZER(cpuhp_pin_lock);
- #endif
-@@ -292,6 +292,7 @@ static int cpu_hotplug_disabled;
-  */
- void pin_current_cpu(void)
- {
-+#ifdef CONFIG_PREEMPT_RT_FULL
- 	struct rt_rw_lock *cpuhp_pin;
- 	unsigned int cpu;
- 	int ret;
-@@ -314,6 +315,7 @@ void pin_current_cpu(void)
- 		goto again;
- 	}
- 	current->pinned_on_cpu = cpu;
-+#endif
- }
- 
- /**
-@@ -321,6 +323,7 @@ void pin_current_cpu(void)
-  */
- void unpin_current_cpu(void)
- {
-+#ifdef CONFIG_PREEMPT_RT_FULL
- 	struct rt_rw_lock *cpuhp_pin = this_cpu_ptr(&cpuhp_pin_lock);
- 
- 	if (WARN_ON(current->pinned_on_cpu != smp_processor_id()))
-@@ -328,6 +331,7 @@ void unpin_current_cpu(void)
- 
- 	current->pinned_on_cpu = -1;
- 	__read_rt_unlock(cpuhp_pin);
-+#endif
- }
- 
- DEFINE_STATIC_PERCPU_RWSEM(cpu_hotplug_lock);
-@@ -918,7 +922,9 @@ static int take_cpu_down(void *_param)
- 
- static int takedown_cpu(unsigned int cpu)
- {
-+#ifdef CONFIG_PREEMPT_RT_FULL
- 	struct rt_rw_lock *cpuhp_pin = per_cpu_ptr(&cpuhp_pin_lock, cpu);
-+#endif
- 	struct cpuhp_cpu_state *st = per_cpu_ptr(&cpuhp_state, cpu);
- 	int err;
- 
-@@ -931,14 +937,18 @@ static int takedown_cpu(unsigned int cpu
- 	 */
- 	irq_lock_sparse();
- 
-+#ifdef CONFIG_PREEMPT_RT_FULL
- 	__write_rt_lock(cpuhp_pin);
-+#endif
- 
- 	/*
- 	 * So now all preempt/rcu users must observe !cpu_active().
- 	 */
- 	err = stop_machine_cpuslocked(take_cpu_down, NULL, cpumask_of(cpu));
- 	if (err) {
-+#ifdef CONFIG_PREEMPT_RT_FULL
- 		__write_rt_unlock(cpuhp_pin);
-+#endif
- 		/* CPU refused to die */
- 		irq_unlock_sparse();
- 		/* Unpark the hotplug thread so we can rollback there */
-@@ -957,7 +967,9 @@ static int takedown_cpu(unsigned int cpu
- 	wait_for_ap_thread(st, false);
- 	BUG_ON(st->state != CPUHP_AP_IDLE_DEAD);
- 
-+#ifdef CONFIG_PREEMPT_RT_FULL
- 	__write_rt_unlock(cpuhp_pin);
-+#endif
- 	/* Interrupts are moved away from the dying cpu, reenable alloc/free */
- 	irq_unlock_sparse();
-