rcuwait: Introduce rcuwait_active()

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This call is lockless and thus should not be trusted blindly.
For example, the return value of rcuwait_wakeup() should be used to
track whether a process was woken up.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Message-Id: <20200424054837.5138-5-dave@stgolabs.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Davidlohr Bueso 2020-04-23 22:48:36 -07:00 • committed by Paolo Bonzini

parent 5c21f7b322

commit 191a43be61

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include/linux/rcuwait.h

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