linux-kernel - Re: [PATCH 1/2] riscv/bitops: Remove smp_mb__{before,after}_clear

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Date:   Tue, 25 Sep 2018 10:19:24 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...ive.com>
To:     andrea.parri@...rulasolutions.com
CC:     linux-kernel@...r.kernel.org, andrea.parri@...rulasolutions.com,
        aou@...s.berkeley.edu, linux-riscv@...ts.infradead.org
Subject:     Re: [PATCH 1/2] riscv/bitops: Remove smp_mb__{before,after}_clear_bit()

On Tue, 25 Sep 2018 05:12:24 PDT (-0700), andrea.parri@...rulasolutions.com wrote:
> The barriers are unused; remove their definition.
>
> Signed-off-by: Andrea Parri <andrea.parri@...rulasolutions.com>
> Cc: Palmer Dabbelt <palmer@...ive.com>
> Cc: Albert Ou <aou@...s.berkeley.edu>
> Cc: <linux-riscv@...ts.infradead.org>
> ---
>  arch/riscv/include/asm/bitops.h | 5 -----
>  1 file changed, 5 deletions(-)
>
> diff --git a/arch/riscv/include/asm/bitops.h b/arch/riscv/include/asm/bitops.h
> index f30daf26f08f4..01db98dfd0435 100644
> --- a/arch/riscv/include/asm/bitops.h
> +++ b/arch/riscv/include/asm/bitops.h
> @@ -23,11 +23,6 @@
>  #include <asm/barrier.h>
>  #include <asm/bitsperlong.h>
>
> -#ifndef smp_mb__before_clear_bit
> -#define smp_mb__before_clear_bit()  smp_mb()
> -#define smp_mb__after_clear_bit()   smp_mb()
> -#endif /* smp_mb__before_clear_bit */
> -
>  #include <asm-generic/bitops/__ffs.h>
>  #include <asm-generic/bitops/ffz.h>
>  #include <asm-generic/bitops/fls.h>

Reviewed-by: Palmer Dabbelt <palmer@...ive.com>

Do you want me to take this via the RISC-V tree?  I only ended up with patch 
1/2 in my inbox, and I probably shouldn't take both.

Thanks!