linux-kernel - Re: [PATCH] ARC: [plat-eznps] add missing atomic_fetch

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Date:   Mon, 19 Sep 2016 10:08:28 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Noam Camus <noamca@...lanox.com>
CC:     "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARC: [plat-eznps] add missing atomic_fetch_xxx operations

On 09/18/2016 10:34 PM, Noam Camus wrote:
> From: Noam Camus <noamca@...lanox.com>
>
> Build brekeage since last changes to generic atomic operations.
> Added couple of missing macros which are now mandatory
>
> Signed-off-by: Noam Camus <noamca@...lanox.com>

Added to for-next !

Thx,
-Vineet



> ---
>  arch/arc/include/asm/atomic.h |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
> index 4e3c1b6..4f732bf 100644
> --- a/arch/arc/include/asm/atomic.h
> +++ b/arch/arc/include/asm/atomic.h
> @@ -284,6 +284,7 @@ static inline int atomic_fetch_##op(int i, atomic_t *v)			\
>  ATOMIC_OPS(add, +=, CTOP_INST_AADD_DI_R2_R2_R3)
>  #define atomic_sub(i, v) atomic_add(-(i), (v))
>  #define atomic_sub_return(i, v) atomic_add_return(-(i), (v))
> +#define atomic_fetch_sub(i, v) atomic_fetch_add(-(i), (v))
>  
>  #undef ATOMIC_OPS
>  #define ATOMIC_OPS(op, c_op, asm_op)					\
> @@ -292,6 +293,7 @@ ATOMIC_OPS(add, +=, CTOP_INST_AADD_DI_R2_R2_R3)
>  
>  ATOMIC_OPS(and, &=, CTOP_INST_AAND_DI_R2_R2_R3)
>  #define atomic_andnot(mask, v) atomic_and(~(mask), (v))
> +#define atomic_fetch_andnot(mask, v) atomic_fetch_and(~(mask), (v))
>  ATOMIC_OPS(or, |=, CTOP_INST_AOR_DI_R2_R2_R3)
>  ATOMIC_OPS(xor, ^=, CTOP_INST_AXOR_DI_R2_R2_R3)
>