commit e420249d44d02e9fc110087ed8feddc38b13528c
author Nicholas Piggin <npiggin@gmail.com> Wed Apr 19 23:05:49 2017 +1000
committer Michael Ellerman <mpe@ellerman.id.au> Sun Apr 23 20:31:57 2017 +1000
tree eca13379193eb23bb9519d1a71d43414fb27dc88
parent adbcf8d74f4609e142b01520afa173bfe911122b

powerpc/64s: Idle do not hold reservation longer than required

When taking the core idle state lock, grab it immediately like a regular
lock, rather than adding more tests in there. Holding the lock keeps it
stable, so there is no need to do it whole holding the reservation.

Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>