[PATCH 1/1] lockdep: Enable PROVE_RAW_LOCK_NESTING with PROVE_LOCKING.

Sebastian Andrzej Siewior
2024-10-09T16:10:45Z

With the printk issues solved, the last known splat created by
PROVE_RAW_LOCK_NESTING is gone.

Enable PROVE_RAW_LOCK_NESTING by default as part of PROVE_LOCKING. Keep
the defines around in case something serious pops up and it needs to be
disabled.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
lib/Kconfig.debug | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 7315f643817ae..5b67816f4a62f 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1409,22 +1409,14 @@ config PROVE_LOCKING
For more details, see Documentation/locking/lockdep-design.rst.

config PROVE_RAW_LOCK_NESTING
- bool "Enable raw_spinlock - spinlock nesting checks"
+ bool
depends on PROVE_LOCKING
- default n
+ default y
help
Enable the raw_spinlock vs. spinlock nesting checks which ensure
that the lock nesting rules for PREEMPT_RT enabled kernels are
not violated.

- NOTE: There are known nesting problems. So if you enable this
- option expect lockdep splats until these problems have been fully
- addressed which is work in progress. This config switch allows to
- identify and analyze these problems. It will be removed and the
- check permanently enabled once the main issues have been fixed.
-
- If unsure, select N.
-
config LOCK_STAT
bool "Lock usage statistics"
depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT
--
2.45.2