linux-kernel - Re: [PATCH v4 3/3] media: atomisp: Only use trace

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Message-ID: <20200820102347.15d2f610@oasis.local.home>
Date:   Thu, 20 Aug 2020 10:23:47 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Nicolas Boichat <drinkcat@...omium.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: Re: [PATCH v4 3/3] media: atomisp: Only use trace_printk if allowed

On Thu, 20 Aug 2020 17:14:12 +0800
Nicolas Boichat <drinkcat@...omium.org> wrote:

> Technically, we could only initialize the trace_printk buffers
> when the print env is switched, to avoid the build error and
> unconditional boot-time warning, but I assume this printing
> framework will eventually get removed when the driver moves out
> of staging?

Perhaps this should be converting into a trace event. Look at what bpf
did for their bpf_trace_printk().

The more I think about it, the less I like this series.

-- Steve