[PATCH v4 00/20] coresight: allow to build coresight as modules

Mike Leach mike.leach at linaro.org
Thu Jul 23 07:03:10 EDT 2020


Hi Tingwei,

Minor Nit: can we get some consistency with the patch naming.
coresight: <component>: <description>
e.g. coresight: cti: allow build as module
where specific components are used. This makes identifying patches for
specific components a lot easier.

Also it would be good to add my patch [1] to this series as requested
by Mathieu - it will ensure that the patch set works as a complete
set.

Thanks and Regards

Mike

[1] https://lists.linaro.org/pipermail/coresight/2020-July/004275.html

On Thu, 23 Jul 2020 at 05:28, Tingwei Zhang <tingwei at codeaurora.org> wrote:
>
> Allow to build coresight as modules. This gives developers the feasibility to
> test their code without reboot.
>
> This series is based on below two series.
>
>  - "coresight: allow to build components as modules"
>    https://lkml.org/lkml/2018/6/5/989
>  - "coresight: make drivers modular"
>    https://lkml.org/lkml/2020/1/17/468
>
> Change from v3:
> Rebase to coresight-next (Mike and Mathieu)
> Reorder try_get_module() (Suzuki)
> Clean up etmdrvdata[] in device remote path (Mike)
> Move cti_remove_conn_xrefs to cti_remove (Mike)
>
> Change from v2:
> Rebase to 5.8-rc5. Export coresight_add_sysfs_link and
> coresight_remove_sysfs_link
> Fix one cut and paste error on MODULE_DESCRIPTION of CTI
>
> Change from v1:
> Use try_module_get() to avoid module to be unloaded when device is used
> in active trace session. (Mathieu P)
>
> Change from above two series.
> This series adds the support to dynamically remove module when the device in
> that module is enabled and used by some trace path. It disables all trace
> paths with that device and release the trace path.
>
> Kim Phillips (7):
>   coresight: use IS_ENABLED for CONFIGs that may be modules
>   coresight: allow etm3x to be built as a module
>   coresight: allow etm4x to be built as a module
>   coresight: allow etb to be built as a module
>   coresight: allow tpiu to be built as a module
>   coresight: allow tmc to be built as a module
>   coresight: allow funnel and replicator drivers to be built as modules
>
> Mian Yousaf Kaukab (4):
>   coresight: export global symbols
>   coresight: remove multiple init calls from funnel driver
>   coresight: remove multiple init calls from replicator driver
>   coresight: tmc-etr: add function to register catu ops
>
> Tingwei Zhang (9):
>   coresight: cpu_debug: add module name in Kconfig
>   coresight: cpu_debug: define MODULE_DEVICE_TABLE
>   coresight: add coresight prefix to barrier_pkt
>   coresight: add try_get_module() in coresight_grab_device()
>   allow to build coresight-stm as a module, for ease of development.
>   coresight: cti: add function to register cti associate ops
>   coresight: allow cti to be built as a module
>   coresight: allow catu drivers to be built as modules
>   coresight: allow the coresight core driver to be built as a module
>
>  drivers/hwtracing/coresight/Kconfig           |  54 ++++++++--
>  drivers/hwtracing/coresight/Makefile          |  22 ++--
>  drivers/hwtracing/coresight/coresight-catu.c  |  37 ++++++-
>  drivers/hwtracing/coresight/coresight-catu.h  |   2 -
>  .../{coresight.c => coresight-core.c}         | 102 ++++++++++++++----
>  .../hwtracing/coresight/coresight-cpu-debug.c |   2 +
>  .../{coresight-cti.c => coresight-cti-core.c} |  51 ++++++++-
>  drivers/hwtracing/coresight/coresight-etb10.c |  22 +++-
>  .../hwtracing/coresight/coresight-etm-perf.c  |   9 +-
>  .../hwtracing/coresight/coresight-etm-perf.h  |   5 +-
>  ...resight-etm3x.c => coresight-etm3x-core.c} |  27 ++++-
>  ...resight-etm4x.c => coresight-etm4x-core.c} |  26 ++++-
>  .../hwtracing/coresight/coresight-funnel.c    |  62 ++++++++++-
>  .../hwtracing/coresight/coresight-platform.c  |   1 +
>  drivers/hwtracing/coresight/coresight-priv.h  |  24 ++---
>  .../coresight/coresight-replicator.c          |  63 ++++++++++-
>  drivers/hwtracing/coresight/coresight-stm.c   |  20 +++-
>  drivers/hwtracing/coresight/coresight-sysfs.c |   2 +
>  .../{coresight-tmc.c => coresight-tmc-core.c} |  19 +++-
>  .../hwtracing/coresight/coresight-tmc-etf.c   |   2 +-
>  .../hwtracing/coresight/coresight-tmc-etr.c   |  21 +++-
>  drivers/hwtracing/coresight/coresight-tmc.h   |   3 +
>  drivers/hwtracing/coresight/coresight-tpiu.c  |  19 +++-
>  include/linux/coresight.h                     |   2 +-
>  24 files changed, 520 insertions(+), 77 deletions(-)
>  rename drivers/hwtracing/coresight/{coresight.c => coresight-core.c} (95%)
>  rename drivers/hwtracing/coresight/{coresight-cti.c => coresight-cti-core.c} (96%)
>  rename drivers/hwtracing/coresight/{coresight-etm3x.c => coresight-etm3x-core.c} (97%)
>  rename drivers/hwtracing/coresight/{coresight-etm4x.c => coresight-etm4x-core.c} (98%)
>  rename drivers/hwtracing/coresight/{coresight-tmc.c => coresight-tmc-core.c} (96%)
>
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
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-- 
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK



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