Commit f22f7132 authored by Waiman Long's avatar Waiman Long Committed by Ingo Molnar
Browse files

locking/rwsem: Make DEBUG_RWSEMS and PREEMPT_RT mutually exclusive 



The debugging code enabled by CONFIG_DEBUG_RWSEMS=y will only be
compiled in when CONFIG_PREEMPT_RT isn't set. There is no point to
allow CONFIG_DEBUG_RWSEMS to be set in a kernel configuration where
CONFIG_PREEMPT_RT is also set. Make them mutually exclusive.

Signed-off-by: default avatarWaiman Long <longman@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Reviewed-by: default avatarBoqun Feng <boqun.feng@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240222150540.79981-5-longman@redhat.com
parent d566c786

lib/Kconfig.debug

+2 −2
Original line number Diff line number Diff line
@@ -1303,7 +1303,7 @@ config PROVE_LOCKING 
	select DEBUG_SPINLOCK

	select DEBUG_MUTEXES if !PREEMPT_RT

	select DEBUG_RT_MUTEXES if RT_MUTEXES

	select DEBUG_RWSEMS

	select DEBUG_RWSEMS if !PREEMPT_RT

	select DEBUG_WW_MUTEX_SLOWPATH

	select DEBUG_LOCK_ALLOC

	select PREEMPT_COUNT if !ARCH_NO_PREEMPT
@@ -1426,7 +1426,7 @@ config DEBUG_WW_MUTEX_SLOWPATH 


config DEBUG_RWSEMS

	bool "RW Semaphore debugging: basic checks"

	depends on DEBUG_KERNEL

	depends on DEBUG_KERNEL && !PREEMPT_RT

	help

	  This debugging feature allows mismatched rw semaphore locks

	  and unlocks to be detected and reported.