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-rw-r--r--features/rt/lockdep-disable-self-test.patch34
1 files changed, 34 insertions, 0 deletions
diff --git a/features/rt/lockdep-disable-self-test.patch b/features/rt/lockdep-disable-self-test.patch
new file mode 100644
index 00000000..fae3936a
--- /dev/null
+++ b/features/rt/lockdep-disable-self-test.patch
@@ -0,0 +1,34 @@
+From 87bd0ee2b2c1a55ad355c37f1143996b0c9f654d Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Tue, 17 Oct 2017 16:36:18 +0200
+Subject: [PATCH 154/191] lockdep: disable self-test
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The self-test wasn't always 100% accurate for RT. We disabled a few
+tests which failed because they had a different semantic for RT. Some
+still reported false positives. Now the selftest locks up the system
+during boot and it needs to be investigated…
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ lib/Kconfig.debug | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
+index 2779c29d9981..74a0a9e54fdb 100644
+--- a/lib/Kconfig.debug
++++ b/lib/Kconfig.debug
+@@ -1392,7 +1392,7 @@ config DEBUG_ATOMIC_SLEEP
+
+ config DEBUG_LOCKING_API_SELFTESTS
+ bool "Locking API boot-time self-tests"
+- depends on DEBUG_KERNEL
++ depends on DEBUG_KERNEL && !PREEMPT_RT
+ help
+ Say Y here if you want the kernel to run a short self-test during
+ bootup. The self-test checks whether common types of locking bugs
+--
+2.19.1
+