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Subject: Re: [PATCH v5 4/5] thermal: devfreq_cooling: Refactor code and switch
 to use Energy Model
To:     Lukasz Luba <lukasz.luba@arm.com>, linux-kernel@vger.kernel.org,
        linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org,
        linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org,
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Cc:     Morten.Rasmussen@arm.com, Dietmar.Eggemann@arm.com,
        javi.merino@arm.com, cw00.choi@samsung.com,
        b.zolnierkie@samsung.com, rjw@rjwysocki.net, sudeep.holla@arm.com,
        viresh.kumar@linaro.org, nm@ti.com, sboyd@kernel.org,
        rui.zhang@intel.com, amit.kucheria@verdurent.com, mingo@redhat.com,
        peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, rostedt@goodmis.org,
        qperret@google.com, bsegall@google.com, mgorman@suse.de,
        shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com,
        kernel@pengutronix.de, khilman@kernel.org, agross@kernel.org,
        bjorn.andersson@linaro.org, robh@kernel.org,
        matthias.bgg@gmail.com, steven.price@arm.com,
        tomeu.vizoso@collabora.com, alyssa.rosenzweig@collabora.com,
        airlied@linux.ie, daniel@ffwll.ch, liviu.dudau@arm.com,
        lorenzo.pieralisi@arm.com, patrick.bellasi@matbug.net,
        orjan.eide@arm.com, rdunlap@infradead.org, mka@chromium.org
References: <20200318114548.19916-1-lukasz.luba@arm.com>
 <20200318114548.19916-5-lukasz.luba@arm.com>
From:   Daniel Lezcano <daniel.lezcano@linaro.org>
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Message-ID: <f3e9f127-47b1-9f30-2148-3c95a5933a92@linaro.org>
Date:   Fri, 3 Apr 2020 19:44:17 +0200
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In-Reply-To: <20200318114548.19916-5-lukasz.luba@arm.com>
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Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On 18/03/2020 12:45, Lukasz Luba wrote:
> The overhauled Energy Model (EM) framework support also devfreq devices.
> The unified API interface of the EM can be used in the thermal subsystem to
> not duplicate code. The power table now is taken from EM structure and
> there is no need to maintain calculation for it locally. In case when the
> EM is not provided by the device a simple interface for cooling device is
> used.
> 
> There is also an improvement in code related to enabling/disabling OPPs,
> which prevents from race condition with devfreq governors.
> 
> [lkp: Reported the build warning]
> Reported-by: kbuild test robot <lkp@intel.com>
> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> # for tracing code
> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>

The changes are too big, please split this patch into smaller chunks.

> ---
>  drivers/thermal/devfreq_cooling.c | 474 ++++++++++++++++--------------
>  include/linux/devfreq_cooling.h   |  39 +--
>  include/trace/events/thermal.h    |  19 +-
>  3 files changed, 277 insertions(+), 255 deletions(-)
> 
> diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c

[ ... ]

>  struct devfreq_cooling_device {
>  	int id;
>  	struct thermal_cooling_device *cdev;
>  	struct devfreq *devfreq;
>  	unsigned long cooling_state;
> -	u32 *power_table;
>  	u32 *freq_table;
> -	size_t freq_table_size;
> +	size_t max_level;

Could you rename it to 'max_state' ?


[ ... ]


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