On Thu, Jun 29, 2017 at 05:01:20PM -0700, Paul E. McKenney wrote:

There is no agreed-upon definition of spin_unlock_wait()'s semantics,
and it appears that all callers could do just as well with a lock/unlock
pair.  This commit therefore removes the underlying arch-specific
arch_spin_unlock_wait().

Signed-off-by: Paul E. McKenney <redacted>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <redacted>
Cc: <redacted>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/arm64/include/asm/spinlock.h | 58 ++++-----------------------------------
 1 file changed, 5 insertions(+), 53 deletions(-)

I'm going to miss this code.

Acked-by: Will Deacon <redacted>

Will