locking/percpu-rwsem: Add percpu_is_write_locked() and percpu_is_read_locked()

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Implement simple accessors to probe percpu-rwsem's locked state:
percpu_is_write_locked(), percpu_is_read_locked().

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20220829124719.675715-11-elver@google.com

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Marco Elver 2022-08-29 14:47:15 +02:00 • committed by Peter Zijlstra

parent f95e5a3d59

commit 01fe8a3f81

2 changed files with 12 additions and 0 deletions

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include/linux/percpu-rwsem.h

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