powerpc: Export __spin_yield
authorSuresh E. Warrier <warrier@linux.vnet.ibm.com>
Wed, 25 Feb 2015 23:23:53 +0000 (17:23 -0600)
committerAlexander Graf <agraf@suse.de>
Tue, 21 Apr 2015 13:21:28 +0000 (15:21 +0200)
commitae75116efdc29bb42f1d99f8c51b5c52965b2413
tree6ed10196b120a4bc51c86a16381f445c7b51db09
parentb79013b2449c23f1f505bdf39c5a6c330338b244
powerpc: Export __spin_yield

Export __spin_yield so that the arch_spin_unlock() function can
be invoked from a module. This will be required for modules where
we want to take a lock that is also is acquired in hypervisor
real mode. Because we want to avoid running any lockdep code
(which may not be safe in real mode), this lock needs to be
an arch_spinlock_t instead of a normal spinlock.

Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
arch/powerpc/lib/locks.c