1 files changed, 0 insertions, 46 deletions
diff --git a/patches/sched-migrate_dis-enable-Use-sleeping_lock-to-annota.patch b/patches/sched-migrate_dis-enable-Use-sleeping_lock-to-annota.patch
deleted file mode 100644
index 530649e30789..000000000000
--- a/patches/sched-migrate_dis-enable-Use-sleeping_lock-to-annota.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From: Scott Wood <swood@redhat.com>
-Date: Tue, 24 Sep 2019 14:36:41 +0200
-Subject: [PATCH] =?UTF-8?q?sched:=20migrate=5Fdis/enable:=20Use=20sl?=
- =?UTF-8?q?eeping=5Flock=E2=80=A6()=20to=20annotate=20sleeping=20points?=
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Without this, rcu_note_context_switch() will complain if an RCU read lock
-is held when migrate_enable() calls stop_one_cpu().  Likewise when
-migrate_disable() calls pin_current_cpu() which calls __read_rt_lock() --
-which bypasses the part of the mutex code that calls sleeping_lock_inc().
-
-Signed-off-by: Scott Wood <swood@redhat.com>
-[bigeasy: use sleeping_lock_…() ]
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- kernel/cpu.c        |    2 ++
- kernel/sched/core.c |    3 +++
- 2 files changed, 5 insertions(+)
-
---- a/kernel/cpu.c
-+++ b/kernel/cpu.c
-@@ -307,7 +307,9 @@ void pin_current_cpu(void)
- 	cpu = smp_processor_id();
- 	preempt_enable();
- 
-+	sleeping_lock_inc();
- 	__read_rt_lock(cpuhp_pin);
-+	sleeping_lock_dec();
- 
- 	preempt_disable();
- 	if (cpu != smp_processor_id()) {
---- a/kernel/sched/core.c
-+++ b/kernel/sched/core.c
-@@ -7355,7 +7355,10 @@ void migrate_enable(void)
- 
- 			unpin_current_cpu();
- 			preempt_enable();
-+
-+			sleeping_lock_inc();
- 			stop_one_cpu(task_cpu(p), migration_cpu_stop, &arg);
-+			sleeping_lock_dec();
- 			return;
- 		}
- 	}