linux-kernel - Re: [PATCH 2 2/3] sched: Fix the wakeup nomination for sched_mc/smt_power

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Date:	Tue, 03 Mar 2009 13:23:53 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Gautham R Shenoy <ego@...ibm.com>
Cc:	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ibm.com>, Ingo Molnar <mingo@...e.hu>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Dipankar Sarma <dipankar@...ibm.com>, efault@....de,
	andi@...stfloor.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2 2/3] sched: Fix the wakeup nomination for
 sched_mc/smt_power_savings.

On Tue, 2009-03-03 at 17:21 +0530, Gautham R Shenoy wrote:
> +/* Assign the sched-domain level which can nominate preferred wake-up cpu */
> +       rd->sched_mc_preferred_wakeup_cpu = UINT_MAX;
> +       rd->authorized_nomination_level = SD_LV_NONE;
> +
> +       if (active_power_savings_level >= POWERSAVINGS_BALANCE_WAKEUP) {
> +               struct sched_domain *sd;
> +               enum sched_domain_level authorized_nomination_level =
> +                                                               SD_LV_NONE;
> +
> +               for_each_domain(first_cpu(*cpu_map), sd) {
> +                       if (!(sd->flags & SD_POWERSAVINGS_BALANCE))
> +                               continue;
> +                       authorized_nomination_level = sd->level;
> +               }
> +
> +               rd->authorized_nomination_level = authorized_nomination_level;
> +       }

Very odd looking comments there, and that enum init wrapping looks
weird. Either exceed 80 chars, or write it in a second line like:

 enum sched_domain_level authorized_nomination_level;

 authorized_nomination_level = SD_LV_NONE;

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