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Message-ID: <CANLsYkwhypfEkmhg=wK+_F6TxxGiuoSqpgGR0REqsOqC-X-3mg@mail.gmail.com>
Date: Tue, 8 Sep 2020 11:53:51 -0600
From: Mathieu Poirier <mathieu.poirier@...aro.org>
To: Tingwei Zhang <tingwei@...eaurora.org>
Cc: Suzuki K Poulose <suzuki.poulose@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Mike Leach <mike.leach@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Leo Yan <leo.yan@...aro.org>,
Randy Dunlap <rdunlap@...radead.org>,
Russell King <linux@...linux.org.uk>,
Kim Phillips <kim.phillips@....com>,
Mian Yousaf Kaukab <ykaukab@...e.de>,
tsoni <tsoni@...eaurora.org>,
Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
Mao Jinlong <jinlmao@...eaurora.org>,
Coresight ML <coresight@...ts.linaro.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v9 00/24] coresight: allow to build coresight as modules
Hi Tingwei,
Apologies for the untimely response to this set, I am hoping to get to
it in the next two weeks.
Thanks,
Mathieu
On Wed, 19 Aug 2020 at 23:47, Tingwei Zhang <tingwei@...eaurora.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 v8:
> Protect etmdrvdata[] by modifying it on relevant CPU (Mathieu and Suzuki)
> Grab the device before allocating memory for the node (Mathieu)
> Add author of coresight core driver (Mathieu)
>
> Change from v7:
> Depends on below change for ETM hotplug (Sai)
> https://lore.kernel.org/linux-arm-kernel/20200729051310.18436-1-saiprakash.ranjan@codeaurora.org/
> Add mutex lock to protect etmdrvdata[] (Suzuki)
> Add helper function coresight_get_ref() (Suzuki)
> Reorg replicator and funnel change. Use two patches to support these
> two drivers. (Suzuki)
> Add fix tag to "coresight: etm: perf: Fix warning caused by etm_setup_aux
> failure" (Suzuki)
> Update author of "coresight: cti: Fix bug clearing sysfs links on callback"
>
> Change from v6:
> Correct module description for CATU (Mike)
> Check ect_ret equals 0 and set ect_enabled flag (Mike)
> Add Tested-by and Reviewed-by from Mike
>
> Change from v5:
> Add below CTI clean up change from Mike into series
> -https://lists.linaro.org/pipermail/coresight/2020-July/004349.html
> Increase module reference count when enabling CTI device (Mike)
>
> Change from v4:
> Fix error handling in coresight_grab_devicei() (Greg)
> Add coresight: cti: Fix remove sysfs link error from Mike
> -https://lists.linaro.org/pipermail/coresight/2020-July/004275.html
> Move cti_remove_conn_xrefs() into cti_remove() (Mike)
> Align patch subject to coresight: <component>: <description> (Mike)
>
> 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 (8):
> coresight: use IS_ENABLED for CONFIGs that may be modules
> coresight: etm3x: allow etm3x to be built as a module
> coresight: etm4x: allow etm4x to be built as a module
> coresight: etb: allow etb to be built as a module
> coresight: tpiu: allow tpiu to be built as a module
> coresight: tmc: allow tmc to be built as a module
> coresight: allow funnel driver to be built as module
> coresight: allow replicator driver to be built as module
>
> Mian Yousaf Kaukab (2):
> coresight: export global symbols
> coresight: tmc-etr: add function to register catu ops
>
> Mike Leach (2):
> coresight: cti: Fix remove sysfs link error
> coresight: cti: Fix bug clearing sysfs links on callback
>
> Tingwei Zhang (12):
> 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()
> coresight: stm: allow to build coresight-stm as a module
> coresight: etm: perf: Fix warning caused by etm_setup_aux failure
> coresight: cti: add function to register cti associate ops
> coresight: cti: don't disable ect device if it's not enabled
> coresight: cti: increase reference count when enabling cti
> coresight: cti: allow cti to be built as a module
> coresight: catu: 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} | 154 +++++++++++++++---
> .../hwtracing/coresight/coresight-cpu-debug.c | 2 +
> .../{coresight-cti.c => coresight-cti-core.c} | 63 ++++++-
> drivers/hwtracing/coresight/coresight-etb10.c | 28 +++-
> .../hwtracing/coresight/coresight-etm-perf.c | 13 +-
> .../hwtracing/coresight/coresight-etm-perf.h | 5 +-
> ...resight-etm3x.c => coresight-etm3x-core.c} | 28 +++-
> ...resight-etm4x.c => coresight-etm4x-core.c} | 84 +++++++---
> .../hwtracing/coresight/coresight-funnel.c | 64 +++++++-
> .../hwtracing/coresight/coresight-platform.c | 1 +
> drivers/hwtracing/coresight/coresight-priv.h | 24 ++-
> .../coresight/coresight-replicator.c | 65 +++++++-
> drivers/hwtracing/coresight/coresight-stm.c | 20 ++-
> drivers/hwtracing/coresight/coresight-sysfs.c | 2 +
> .../{coresight-tmc.c => coresight-tmc-core.c} | 25 ++-
> .../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 | 20 ++-
> include/linux/coresight.h | 3 +-
> 24 files changed, 634 insertions(+), 108 deletions(-)
> rename drivers/hwtracing/coresight/{coresight.c => coresight-core.c} (92%)
> rename drivers/hwtracing/coresight/{coresight-cti.c => coresight-cti-core.c} (94%)
> rename drivers/hwtracing/coresight/{coresight-etm3x.c => coresight-etm3x-core.c} (97%)
> rename drivers/hwtracing/coresight/{coresight-etm4x.c => coresight-etm4x-core.c} (96%)
> rename drivers/hwtracing/coresight/{coresight-tmc.c => coresight-tmc-core.c} (95%)
>
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
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