linux-kernel - Re: [PATCHv6 4/5] tracing: Add register read/write tracing support

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Date:   Fri, 7 Jan 2022 09:56:38 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Sai Prakash Ranjan <quic_saipraka@...cinc.com>
Cc:     Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Marc Zyngier <maz@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        gregkh <gregkh@...uxfoundation.org>, <quic_psodagud@...cinc.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>,
        Prasad Sodagudi <psodagud@...eaurora.org>
Subject: Re: [PATCHv6 4/5] tracing: Add register read/write tracing support

On Fri, 7 Jan 2022 10:40:05 +0530
Sai Prakash Ranjan <quic_saipraka@...cinc.com> wrote:

> Hi Steve,
> 
> On 1/6/2022 11:48 PM, Steven Rostedt wrote:
> > This should not be in the kernel/trace directory. It should be in the  
> 
> Hmm these are called from low level generic io header file 
> (include/asm-generic/) where
> we wouldn't have any Kconfig to control this feature flexibly and as we 
> can have this as
> a generic feature selectable by other architectures, wouldn't this be 
> suited in kernel/trace?

Isn't there a place for generic rwmmio code?

> I thought you were ok with the folder structure in the initial versions 
> of the series?

Sorry, I missed the C file in kernel/trace. The files in kernel/trace tend
to be specific for the internals of tracing. This C file is more to hold
helper functions for mmio, which to me should be someplace for mmio code.
Perhaps in mm/ ?

-- Steve