Re: [RFC PATCH 10/16] mips: locks: remove unused arch_*_relax operations

[David Daney <ddaney@caviumnetworks.com>]

On 06/21/2013 10:17 AM, Will Deacon wrote:
> The arch_{spin,read,write}_relax macros are not used anywhere in the
> kernel and are typically just aliases for cpu_relax().
>
> This patch removes the unused definitions for MIPS.
>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: David Daney <david.daney@cavium.com>

FWIW: Acked-by: David Daney <david.daney@cavium.com>

> Signed-off-by: Will Deacon <will.deacon@arm.com>
> ---
>   arch/mips/include/asm/spinlock.h | 4 ----
>   1 file changed, 4 deletions(-)
>
> diff --git a/arch/mips/include/asm/spinlock.h b/arch/mips/include/asm/spinlock.h
> index 78d201f..7bd850a 100644
> --- a/arch/mips/include/asm/spinlock.h
> +++ b/arch/mips/include/asm/spinlock.h
> @@ -419,8 +419,4 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
>   #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
>   #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
>
> -#define arch_spin_relax(lock)	cpu_relax()
> -#define arch_read_relax(lock)	cpu_relax()
> -#define arch_write_relax(lock)	cpu_relax()
> -
>   #endif /* _ASM_SPINLOCK_H */
>