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: Waiman Long <longman@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240222150540.79981-5-longman@redhat.com

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 975a07f9f1cc08838d272f83d5f04a85ff2f5cd2..cb695bc76d304cc7bc65475a873823d84b4239dd 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -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.