1 files changed, 0 insertions, 86 deletions
diff --git a/debian/patches-rt/sched-delay-put-task.patch b/debian/patches-rt/sched-delay-put-task.patch
deleted file mode 100644
index d4460d64f..000000000
--- a/debian/patches-rt/sched-delay-put-task.patch
+++ /dev/null
@@ -1,86 +0,0 @@
-Subject: sched: Move task_struct cleanup to RCU
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Tue, 31 May 2011 16:59:16 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz
-
-__put_task_struct() does quite some expensive work. We don't want to
-burden random tasks with that.
-
-Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
----
- include/linux/sched.h      |    3 +++
- include/linux/sched/task.h |   12 +++++++++++-
- kernel/fork.c              |   14 ++++++++++++++
- 3 files changed, 28 insertions(+), 1 deletion(-)
-
---- a/include/linux/sched.h
-+++ b/include/linux/sched.h
-@@ -1199,6 +1199,9 @@ struct task_struct {
- 	unsigned int			sequential_io;
- 	unsigned int			sequential_io_avg;
- #endif
-+#ifdef CONFIG_PREEMPT_RT_BASE
-+	struct rcu_head			put_rcu;
-+#endif
- #ifdef CONFIG_DEBUG_ATOMIC_SLEEP
- 	unsigned long			task_state_change;
- #endif
---- a/include/linux/sched/task.h
-+++ b/include/linux/sched/task.h
-@@ -91,6 +91,16 @@ extern void sched_exec(void);
- 
- #define get_task_struct(tsk) do { refcount_inc(&(tsk)->usage); } while(0)
- 
-+#ifdef CONFIG_PREEMPT_RT_BASE
-+extern void __put_task_struct_cb(struct rcu_head *rhp);
-+
-+static inline void put_task_struct(struct task_struct *t)
-+{
-+	if (refcount_dec_and_test(&t->usage))
-+		call_rcu(&t->put_rcu, __put_task_struct_cb);
-+}
-+#else
-+
- extern void __put_task_struct(struct task_struct *t);
- 
- static inline void put_task_struct(struct task_struct *t)
-@@ -98,7 +108,7 @@ static inline void put_task_struct(struc
- 	if (refcount_dec_and_test(&t->usage))
- 		__put_task_struct(t);
- }
--
-+#endif
- struct task_struct *task_rcu_dereference(struct task_struct **ptask);
- 
- #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT
---- a/kernel/fork.c
-+++ b/kernel/fork.c
-@@ -720,6 +720,9 @@ static inline void put_signal_struct(str
- 		free_signal_struct(sig);
- }
- 
-+#ifdef CONFIG_PREEMPT_RT_BASE
-+static
-+#endif
- void __put_task_struct(struct task_struct *tsk)
- {
- 	WARN_ON(!tsk->exit_state);
-@@ -736,7 +739,18 @@ void __put_task_struct(struct task_struc
- 	if (!profile_handoff_task(tsk))
- 		free_task(tsk);
- }
-+#ifndef CONFIG_PREEMPT_RT_BASE
- EXPORT_SYMBOL_GPL(__put_task_struct);
-+#else
-+void __put_task_struct_cb(struct rcu_head *rhp)
-+{
-+	struct task_struct *tsk = container_of(rhp, struct task_struct, put_rcu);
-+
-+	__put_task_struct(tsk);
-+
-+}
-+EXPORT_SYMBOL_GPL(__put_task_struct_cb);
-+#endif
- 
- void __init __weak arch_task_cache_init(void) { }
-