linux-kernel - Re: mmotm 2010-01-28-01-36 uploaded (sched.c + percpu)

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Date:	Fri, 29 Jan 2010 09:35:58 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Anton Blanchard <anton@...ba.org>
CC:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: mmotm 2010-01-28-01-36 uploaded (sched.c + percpu)

On 01/28/10 15:41, Anton Blanchard wrote:
>
> Hi Randy,
>
>> when CONFIG_SMP is not enabled:
>>
>> kernel/sched.c:10915: error: 'percpu_counter_batch' undeclared (first use in this function)
>
> Did 1/2 make it into mmotm?

I only see one patch from you in mmotm.


> Anton
>
> ---
>
> [PATCH 1/2] percpu_counter: Make __percpu_counter_add an inline function on UP
>
> Even though batch isn't used on UP, we may want to pass one in to keep the
> SMP and UP code paths similar. Convert __percpu_counter_add to an inline
> function so we wont get variable unused warnings if we do.
>
> Signed-off-by: Anton Blanchard<anton@...ba.org>
> ---
>
> diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
> index a7684a5..794662b 100644
> --- a/include/linux/percpu_counter.h
> +++ b/include/linux/percpu_counter.h
> @@ -98,9 +98,6 @@ static inline void percpu_counter_set(struct percpu_counter *fbc, s64 amount)
>   	fbc->count = amount;
>   }
>
> -#define __percpu_counter_add(fbc, amount, batch) \
> -	percpu_counter_add(fbc, amount)
> -
>   static inline void
>   percpu_counter_add(struct percpu_counter *fbc, s64 amount)
>   {
> @@ -109,6 +106,12 @@ percpu_counter_add(struct percpu_counter *fbc, s64 amount)
>   	preempt_enable();
>   }
>
> +static inline void
> +__percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch)
> +{
> +	percpu_counter_add(fbc, amount);
> +}
> +
>   static inline s64 percpu_counter_read(struct percpu_counter *fbc)
>   {
>   	return fbc->count;
>


-- 
~Randy
--
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