Subject: Re: [PATCH v2 0/6] coresight: syscfg: Extend configfs for config load

From: Mathieu Poirier <[email-masked]>
Date: Mon, 10 Jan 2022 11:58:50 -0700

Good morning Mike,

On Tue, Nov 30, 2021 at 10:00:54PM +0000, Mike Leach wrote:
> This set extends the configfs support to allow loading and unloading of
> configurations as binary files via configfs.
> 
> Additional attributes - load, unload and last_load_status are provided to
> implement the load functionality.
> 
> Routines to generate binary configuration files are supplied in
> ./samples/coresight.
> 
> Example generator and reader applications are provided.
> 
> Additional Makefile.host supplied to build the generator and reader
> applications on the host system separate from a cross compiled kernel.
> 
> Documentation is updated to describe feature usage.
> 
> Applies and tested on latest coresight/next that includes the
> previous coresight configuration dynamic load patchset.
> 

I have started to review this set.

Thanks,
Mathieu

> Changes since v1:
> 1) Rebased to coresight/next - 5.16-rc1 with previous coresight config
> set applied.
> 2) Makefile.host fixed to default to all target.
> 
> Mike Leach (6):
>   coresight: configfs: Add in functionality for load via configfs
>   coresight: configfs: Add in binary attributes to load files
>   coresight: configfs: Modify config files to allow userspace use
>   coresight: samples: Add an example config writer for configfs load
>   coresight: samples: Add coresight file reader sample program
>   Documentation: coresight: docs for config load via configfs
> 
>  .../trace/coresight/coresight-config.rst      | 151 +++++-
>  drivers/hwtracing/coresight/Makefile          |   2 +-
>  .../coresight/coresight-config-file.c         | 472 ++++++++++++++++++
>  .../coresight/coresight-config-file.h         | 158 ++++++
>  .../hwtracing/coresight/coresight-config.h    |  38 ++
>  .../coresight/coresight-syscfg-configfs.c     | 148 +++++-
>  .../coresight/coresight-syscfg-configfs.h     |   8 +
>  .../hwtracing/coresight/coresight-syscfg.c    |  36 ++
>  .../hwtracing/coresight/coresight-syscfg.h    |   2 +
>  samples/coresight/Makefile                    |  23 +
>  samples/coresight/Makefile.host               |  47 ++
>  samples/coresight/coresight-cfg-bufw.c        | 302 +++++++++++
>  samples/coresight/coresight-cfg-bufw.h        |  24 +
>  samples/coresight/coresight-cfg-file-read.c   | 191 +++++++
>  samples/coresight/coresight-cfg-filegen.c     |  89 ++++
>  15 files changed, 1677 insertions(+), 14 deletions(-)
>  create mode 100644 drivers/hwtracing/coresight/coresight-config-file.c
>  create mode 100644 drivers/hwtracing/coresight/coresight-config-file.h
>  create mode 100644 samples/coresight/Makefile.host
>  create mode 100644 samples/coresight/coresight-cfg-bufw.c
>  create mode 100644 samples/coresight/coresight-cfg-bufw.h
>  create mode 100644 samples/coresight/coresight-cfg-file-read.c
>  create mode 100644 samples/coresight/coresight-cfg-filegen.c
> 
> -- 
> 2.17.1
> 

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