The following commit has been merged into the locking/core branch of tip:
Commit-ID: d387ceb17149fed4d85a1ec01b3d65ae0204060d
Gitweb: https://git.kernel.org/tip/d387ceb17149fed4d85a1ec01b3d65ae0204060d
Author: Waiman Long <longman@redhat.com>
AuthorDate: Wed, 27 Nov 2024 21:00:09 -05:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Mon, 02 Dec 2024 12:16:58 +01:00
locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT
Relax the rule to set PROVE_RAW_LOCK_NESTING by default only for arches
that supports PREEMPT_RT. For arches that do not support PREEMPT_RT,
they will not be forced to address unimportant raw lock nesting issues
when they want to enable PROVE_LOCKING. They do have the option
to enable it to look for these raw locking nesting problems if they
choose to.
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20241128020009.83347-1-longman@redhat.com
---
lib/Kconfig.debug | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index f3d7237..49a3819 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1397,9 +1397,9 @@ config PROVE_LOCKING
For more details, see Documentation/locking/lockdep-design.rst.
config PROVE_RAW_LOCK_NESTING
- bool
+ bool "Enable raw_spinlock - spinlock nesting checks" if !ARCH_SUPPORTS_RT
depends on PROVE_LOCKING
- default y
+ default y if ARCH_SUPPORTS_RT
help
Enable the raw_spinlock vs. spinlock nesting checks which ensure
that the lock nesting rules for PREEMPT_RT enabled kernels are