tree bbf780dbc1abca864c5d3ef071008478e991f601
parent 1945bc4549e5cb1f9aa873ec29191aa54dc851d2
author Nicholas Piggin <npiggin@gmail.com> 1492607148 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1492943509 +1000

powerpc/64s: Expand core idle state bits

In preparation for adding more bits to the core idle state word, move
the lock bit up, and unlock by flipping the lock bit rather than masking
off all but the thread bits.

Add branch hints for atomic operations while we're here.

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>