Commit 4957089a authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by Vlastimil Babka
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locking/local_lock: Introduce local_lock_is_locked(). 



Introduce local_lock_is_locked() that returns true when
given local_lock is locked by current cpu (in !PREEMPT_RT) or
by current task (in PREEMPT_RT).
The goal is to detect a deadlock by the caller.

Reviewed-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
parent 4ec1a08d
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