linux-kernel - Re: [PATCH v3 5/9] platform/surface: aggregator: Add error injection capabilities

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Message-ID: <20201222172140.38afad6c@gandalf.local.home>
Date:   Tue, 22 Dec 2020 17:21:40 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Maximilian Luz <luzmaximilian@...il.com>
Cc:     linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Barnabás Pőcze <pobrn@...tonmail.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ingo Molnar <mingo@...hat.com>,
        Blaž Hrastnik <blaz@...n.io>,
        Dorian Stoll <dorian.stoll@...p.io>,
        platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v3 5/9] platform/surface: aggregator: Add error
 injection capabilities

On Mon, 21 Dec 2020 19:39:55 +0100
Maximilian Luz <luzmaximilian@...il.com> wrote:

> This commit adds error injection hooks to the Surface Serial Hub
> communication protocol implementation, to:
> 
>  - simulate simple serial transmission errors,
> 
>  - drop packets, requests, and responses, simulating communication
>    failures and potentially trigger retransmission timeouts, as well as
> 
>  - inject invalid data into submitted and received packets.
> 
> Together with the trace points introduced in the previous commit, these
> facilities are intended to aid in testing, validation, and debugging of
> the Surface Aggregator communication layer.
> 
> Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>
> Reviewed-by: Hans de Goede <hdegoede@...hat.com>
> ---
> 
> Changes in v1 (from RFC):
>  - remove unnecessary default in Kconfig entry
> 
> Changes in v2:
>  - use dedicated trace event class for data error injection
>  - spell check comments and strings, fix typos
>  - unify comment style
>  - run checkpatch --strict, fix warnings and style issues
> 

>From a tracing point of view:

Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org>

-- Steve

> ---
>  drivers/platform/surface/aggregator/Kconfig   |  14 +
>  .../surface/aggregator/ssh_packet_layer.c     | 296 +++++++++++++++++-
>  .../surface/aggregator/ssh_request_layer.c    |  35 +++
>  drivers/platform/surface/aggregator/trace.h   |  31 ++
>  4 files changed, 375 insertions(+), 1 deletion(-)
>