sched/wait: Add swq_has_sleeper()
authorDavidlohr Bueso <dave@stgolabs.net>
Wed, 13 Sep 2017 20:08:18 +0000 (13:08 -0700)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 15 Sep 2017 14:57:10 +0000 (16:57 +0200)
commit8cd641e3c7cbf86c7cbd2a17a160dd137d86c860
tree23ff1da546c321e16956cbc2456fc55fe7931008
parent3a8b0677fc6180a467e26cc32ce6b0c09a32f9bb
sched/wait: Add swq_has_sleeper()

Which is the equivalent of what we have in regular waitqueues.
I'm not crazy about the name, but this also helps us get both
apis closer -- which iirc comes originally from the -net folks.

We also duplicate the comments for the lockless swait_active(),
from wait.h. Future users will make use of this interface.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
include/linux/swait.h