linux-kernel - Re: [PATCH v1] percpu: use raw_local_irq_* in _this

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Date:	Wed, 15 Feb 2012 05:59:07 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Christoph Lameter <cl@...ux.com>, Tejun Heo <tj@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] percpu: use raw_local_irq_* in _this_cpu op

Le mercredi 15 février 2012 à 12:36 +0800, Ming Lei a écrit :
> It doesn't make sense to trace irq off or do irq flags
> lock proving inside 'this_cpu' operations, so replace local_irq_*
> with raw_local_irq_* in 'this_cpu' op.
...
> Acked-by: Christoph Lameter <cl@...ux.com>
> Signed-off-by: Ming Lei <tom.leiming@...il.com>
> ---
>  include/linux/percpu.h |   20 ++++++++++----------
>  1 files changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/include/linux/percpu.h b/include/linux/percpu.h
> index 6e68d05..5ed1e38 100644
> --- a/include/linux/percpu.h
> +++ b/include/linux/percpu.h
> @@ -294,9 +294,9 @@ do {									\
>  #define _this_cpu_generic_to_op(pcp, val, op)				\
>  do {									\
>  	unsigned long flags;						\
> -	local_irq_save(flags);						\
> +	raw_local_irq_save(flags);						\
>  	*__this_cpu_ptr(&(pcp)) op val;					\
> -	local_irq_restore(flags);					\
> +	raw_local_irq_restore(flags);					\
>  } while (0)
>  

Could you check the alignement of trailing '\' ?




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