Subject: Re: [PATCH RFC 12/26] arm64: Remove spin_unlock_wait() arch-specific definitions

From: Will Deacon <[email-masked]>
Date: Fri, 30 Jun 2017 10:20:57 +0100

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 <[email-masked]>
> Cc: Catalin Marinas <[email-masked]>
> Cc: Will Deacon <[email-masked]>
> Cc: <[email-masked]>
> Cc: Peter Zijlstra <[email-masked]>
> Cc: Alan Stern <[email-masked]>
> Cc: Andrea Parri <[email-masked]>
> Cc: Linus Torvalds <[email-masked]>
> ---
>  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 <[email-masked]>

Will