linux-kernel - Re: [PATCH]kernel/sched_fair.c: the comment of the calc_delta

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Message-ID: <20090407165736.GI12226@hack>
Date:	Wed, 8 Apr 2009 00:57:36 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	"figo.zhang" <figo.zhang@...orific.com>
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org, rdunlap@...otime.net
Subject: Re: [PATCH]kernel/sched_fair.c: the comment of the
	calc_delta_fair() maybe not correctly

On Tue, Apr 07, 2009 at 02:33:06PM +0800, figo.zhang wrote:
>the comment of the calc_delta_fair() maybe not correctly, should be
>delta *= NICE_O_LOAD/se->load
>
>Signed-off-by: figo.zhang <figo.zhang@...orific.com>

Agreed.

But...


>
>diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
>index 3816f21..5134b45 100644
>--- a/kernel/sched_fair.c
>+++ b/kernel/sched_fair.c
>@@ -386,7 +386,7 @@ int sched_nr_latency_handler(struct ctl_table
>*table, int write, #endif
> 
> /*
>- * delta /= w
>+ * delta *= NICE_O_LOAD/se->load

Is that an 'O' or '0'(zero)? It looks like an 'O' for me ...
Obviously, it should be '0' (zero). :)


>  */
> static inline unsigned long
> calc_delta_fair(unsigned long delta, struct sched_entity *se)
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