linux-kernel - Re: [RFC][PATCH 02/14] sched: Simplify cpu

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Date:	Mon, 14 Mar 2011 17:35:59 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Anton Blanchard <anton@....ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Venkatesh Pallipadi <venki@...gle.com>,
	Paul Turner <pjt@...gle.com>, Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Andreas Herrmann <andreas.herrmann3@....com>
Subject: Re: [RFC][PATCH 02/14] sched: Simplify cpu_power initialization

On Mon, Mar 14, 2011 at 04:06:15PM +0100, Peter Zijlstra wrote:
> The code in update_group_power() does what init_sched_groups_power()
> does and more, so remove the special init_ code and call the generic
> code instead.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> LKML-Reference: <new-submission>
> ---
>  kernel/sched.c |   44 +++++---------------------------------------
>  1 file changed, 5 insertions(+), 39 deletions(-)
> 
> Index: linux-2.6/kernel/sched.c
> ===================================================================
> --- linux-2.6.orig/kernel/sched.c
> +++ linux-2.6/kernel/sched.c
> @@ -6655,9 +6655,6 @@ cpu_attach_domain(struct sched_domain *s
>  	struct rq *rq = cpu_rq(cpu);
>  	struct sched_domain *tmp;
>  
> -	for (tmp = sd; tmp; tmp = tmp->parent)
> -		tmp->span_weight = cpumask_weight(sched_domain_span(tmp));
> -
>  	/* Remove the sched domains which do not contribute to scheduling. */
>  	for (tmp = sd; tmp; ) {
>  		struct sched_domain *parent = tmp->parent;

This and ...

[ snip what was explained in change log ]

>  
>  /*
> @@ -7483,7 +7446,7 @@ static int __build_sched_domains(const s
>  {
>  	enum s_alloc alloc_state = sa_none;
>  	struct s_data d;
> -	struct sched_domain *sd;
> +	struct sched_domain *sd, *tmp;
>  	int i;
>  #ifdef CONFIG_NUMA
>  	d.sd_allnodes = 0;
> @@ -7506,6 +7469,9 @@ static int __build_sched_domains(const s
>  		sd = __build_book_sched_domain(&d, cpu_map, attr, sd, i);
>  		sd = __build_mc_sched_domain(&d, cpu_map, attr, sd, i);
>  		sd = __build_smt_sched_domain(&d, cpu_map, attr, sd, i);
> +
> +		for (tmp = sd; tmp; tmp = tmp->parent)
> +			tmp->span_weight = cpumask_weight(sched_domain_span(tmp));
>  	}
>  
>  	for_each_cpu(i, cpu_map) {
> 

this, looks like a separate change than what was explained in the change
log. Did you forget a "quilt new" between these two changes?

-- Steve

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