linux-kernel - Re: [QUEUED v20180920 00/16] stm class/intel

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Date:   Thu, 27 Sep 2018 11:18:44 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [QUEUED v20180920 00/16] stm class/intel_th: Queued updates for
 v4.20

On Thu, Sep 20, 2018 at 03:45:37PM +0300, Alexander Shishkin wrote:
> Hi,
> 
> These are patches I have queued so far, that I'm planning to send to
> Greg for the next merge window. This is mainly support for MIPI SyS-T
> protocol and all the infrastructure changes to make it possible.
> 
> MIPI SyS-T is a public standard [0] for a software-level trace protocol
> that in this instance we use on top of STM devices (if we choose to) and
> MIPI STP protocol.
> 
> The old "protocol" is preserved for compatibility.

I have tested this set on my side and things work as advertised.  Since I do not
have a MIPI SyS-T decoder I can't validate the output, but the mechanic behind
the functionality is simple and trivial to use.  I think you have succeeded in
introducing something that could have otherwise been messy. 

Tested-by: Mathieu Poirier <mathieu.poirier@...aro.org>

> 
> [0] http://www.mipi.org/specifications/sys-t
> 
> Alexander Shishkin (16):
>   stm class: Rework policy node fallback
>   stm class: Clarify configfs root type/operations names
>   stm class: Clean up stp_configfs_init
>   stm class: Introduce framing protocol drivers
>   stm class: Add a helper for writing data packets
>   stm class: Factor out default framing protocol
>   stm class: Switch over to the protocol driver
>   stm class: Add MIPI SyS-T protocol support
>   stm class: p_sys-t: Add support for CLOCKSYNC packets
>   stm class: p_sys-t: Document the configfs interface
>   stm class: Document the MIPI SyS-T protocol usage
>   intel_th: SPDX-ify the documentation
>   stm class: SPDX-ify the documentation
>   stm class: heartbeat: Fix whitespace
>   lib: Add memcat_p(): paste 2 pointer arrays together
>   stm class: Use memcat_p()
> 
>  .../ABI/testing/configfs-stp-policy-p_sys-t   |  41 ++
>  Documentation/trace/intel_th.rst              |   2 +
>  Documentation/trace/stm.rst                   |   2 +
>  Documentation/trace/sys-t.rst                 |  62 +++
>  drivers/hwtracing/stm/Kconfig                 |  29 ++
>  drivers/hwtracing/stm/Makefile                |   6 +
>  drivers/hwtracing/stm/core.c                  | 292 +++++++++++---
>  drivers/hwtracing/stm/heartbeat.c             |   2 +-
>  drivers/hwtracing/stm/p_basic.c               |  47 +++
>  drivers/hwtracing/stm/p_sys-t.c               | 381 ++++++++++++++++++
>  drivers/hwtracing/stm/policy.c                | 148 +++++--
>  drivers/hwtracing/stm/stm.h                   |  57 ++-
>  include/linux/string.h                        |   7 +
>  lib/Kconfig.debug                             |   8 +
>  lib/Makefile                                  |   1 +
>  lib/string.c                                  |  31 ++
>  lib/test_memcat_p.c                           | 115 ++++++
>  17 files changed, 1138 insertions(+), 93 deletions(-)
>  create mode 100644 Documentation/ABI/testing/configfs-stp-policy-p_sys-t
>  create mode 100644 Documentation/trace/sys-t.rst
>  create mode 100644 drivers/hwtracing/stm/p_basic.c
>  create mode 100644 drivers/hwtracing/stm/p_sys-t.c
>  create mode 100644 lib/test_memcat_p.c
> 
> -- 
> 2.18.0
>