Commit d387ceb1 authored by Waiman Long's avatar Waiman Long Committed by Peter Zijlstra
Browse files

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: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWaiman Long <longman@redhat.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20241128020009.83347-1-longman@redhat.com
parent 0302d2fd

lib/Kconfig.debug

+2 −2
Original line number Diff line number Diff line
@@ -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