linux-kernel - Re: [RFC v1 2/3] interconnect: Add Qualcomm msm8916 interconnect provider driver

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Message-ID: <5bd5fbd9-ee12-a414-88ce-32b286318616@linaro.org>
Date:   Tue, 16 May 2017 17:59:02 +0300
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Linux PM list <linux-pm@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Rob Herring <robh+dt@...nel.org>,
        Kevin Hilman <khilman@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        skannan@...eaurora.org, Stephen Boyd <sboyd@...eaurora.org>,
        Andy Gross <andy.gross@...aro.org>, seansw@....qualcomm.com,
        davidai@...cinc.com,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [RFC v1 2/3] interconnect: Add Qualcomm msm8916 interconnect
 provider driver

On 05/15/2017 07:01 PM, Geert Uytterhoeven wrote:
> Hi Georgi,
> 
> On Mon, May 15, 2017 at 5:35 PM, Georgi Djakov <georgi.djakov@...aro.org> wrote:
>> --- /dev/null
>> +++ b/drivers/interconnect/qcom/interconnect_msm8916.c
> 
>> +struct qcom_interconnect_node {
>> +       struct interconnect_node node;
>> +       unsigned int id;
> 
> 4 byte gap due to alignment rules on 64-bit.
> 
>> +       unsigned char *name;
>> +       struct interconnect_node *links[8];
>> +       int num_links;
>> +       int port;
>> +       int buswidth;
> 
> 4 byte gap due to alignment rules.
> 
>> +       u64 ib;
>> +       u64 ab;
>> +       u64 rate;
>> +};
> 
> You can avoid the gaps by putting members of the same size and alignment
> together.

Thanks Geert, i will rearrange this to reduce the padding bytes!

BR,
Georgi