Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2007032



commit f8635d509d807c0a9deb273e19bc5a8a19c52895
Author: Peter Zijlstra <peterz@infradead.org>
Date:   Sun, 15 Aug 2021 23:29:00 +0200

    locking/ww_mutex: Implement rtmutex based ww_mutex API functions

    Add the actual ww_mutex API functions which replace the mutex based variant
    on RT enabled kernels.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Link: https://lore.kernel.org/r/20210815211305.024057938@linutronix.de



Signed-off-by: Waiman Long <longman@redhat.com>