linux-kernel - Re: [PATCH v10 08/26] gunyah: rsc_mgr: Add resource manager RPC core

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Message-ID: <e75b8b9e-c870-6342-f7e4-32492d5f77be@linaro.org>
Date:   Mon, 27 Feb 2023 18:52:03 -0600
From:   Alex Elder <alex.elder@...aro.org>
To:     Elliot Berman <quic_eberman@...cinc.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Alex Elder <elder@...aro.org>,
        Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>
Cc:     Murali Nalajala <quic_mnalajal@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>,
        Carl van Schaik <quic_cvanscha@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v10 08/26] gunyah: rsc_mgr: Add resource manager RPC core

On 2/23/23 5:13 PM, Elliot Berman wrote:
>> TBH, gunyah.c should be merged as part of resource manager, and check 
>> if uuids and features in probe before proceeding further.
>>
> 
> 
> Ah -- gunyah_rsc_mgr.ko has symbol dependency on gunyah-msgq.ko. 
> gunyah-msgq.ko has symbol dependency on gunyah.ko. gunyah.ko doesn't 
> have any probe and does all its work on module_init.
> 
> In order to merge gunyah.c with resource manager, I would need to 
> incorporate message queue mailbox into resource manager. IMO, this 
> rapidly moves towards a mega-module which was discouraged previously.

I missed this discussion; why was it discouraged?

I can think of some reasons why I guess.  But I don't see what
problem comes from linking together a "mega module" that's made
up of well-isolated source files that expose minimal APIs to
one another.  All inter-dependent modules will required at once
anyway; I don't understand the benefit of implementing them
separately.  Can you explain, or provide some context?  Thanks.

					-Alex