Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50, v6.5, v6.1.49, v6.1.48, v6.1.46, v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35, v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26 |
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#
ae7f2b5a |
| 25-Apr-2023 |
James Clark <james.clark@arm.com> |
coresight: Make refcount a property of the connection
This removes the need to do an additional lookup for the total number of ports used and also removes the need to allocate an array of refcounts
coresight: Make refcount a property of the connection
This removes the need to do an additional lookup for the total number of ports used and also removes the need to allocate an array of refcounts which is just another representation of a connection array.
This was only used for link type devices, for regular devices a single refcount on the coresight device is used.
There is a both an input and output refcount in case two link type devices are connected together so that they don't overwrite each other's counts.
Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230425143542.2305069-11-james.clark@arm.com
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#
9fa36828 |
| 25-Apr-2023 |
James Clark <james.clark@arm.com> |
coresight: Use enum type for cs_mode wherever possible
mode is stored as a local_t, but it is also passed around a lot as a plain u32, so use the correct type wherever local_t isn't currently used.
coresight: Use enum type for cs_mode wherever possible
mode is stored as a local_t, but it is also passed around a lot as a plain u32, so use the correct type wherever local_t isn't currently used. This helps a little bit with readability.
Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230425143542.2305069-3-james.clark@arm.com
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Revision tags: v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13, v6.2, v6.1.12, v6.1.11, v6.1.10, v6.1.9, v6.1.8, v6.1.7, v6.1.6, v6.1.5, v6.0.19, v6.0.18, v6.1.4, v6.1.3, v6.0.17, v6.1.2, v6.0.16, v6.1.1, v6.0.15, v6.0.14, v6.0.13, v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80, v6.0.9, v5.15.79, v6.0.8, v5.15.78, v6.0.7, v5.15.77, v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4, v6.0.3, v6.0.2, v5.15.74, v5.15.73, v6.0.1, v5.15.72, v6.0, v5.15.71, v5.15.70, v5.15.69, v5.15.68, v5.15.67, v5.15.66, v5.15.65, v5.15.64 |
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#
08e9fa5f |
| 30-Aug-2022 |
James Clark <james.clark@arm.com> |
coresight: Re-use same function for similar sysfs register accessors
Currently each accessor macro creates an identical function which wastes space in the text area and pollutes the ftrace function
coresight: Re-use same function for similar sysfs register accessors
Currently each accessor macro creates an identical function which wastes space in the text area and pollutes the ftrace function names. Change it so that the same function is used, but the register to access is passed in as parameter rather than baked into each function.
Signed-off-by: James Clark <james.clark@arm.com> Reviewed-by: Mike Leach <mike.leach@linaro.org> Link: https://lore.kernel.org/r/20220830172614.340962-4-james.clark@arm.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
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b6df1cbb |
| 30-Aug-2022 |
James Clark <james.clark@arm.com> |
coresight: Simplify sysfs accessors by using csdev_access abstraction
The coresight_device struct is available in the sysfs accessor, and this contains a csdev_access struct which can be used to acc
coresight: Simplify sysfs accessors by using csdev_access abstraction
The coresight_device struct is available in the sysfs accessor, and this contains a csdev_access struct which can be used to access registers. Use this instead of passing in the type of each drvdata so that a common function can be shared between all the cs drivers.
No functional changes.
Signed-off-by: James Clark <james.clark@arm.com> Reviewed-by: Mike Leach <mike.leach@linaro.org> Link: https://lore.kernel.org/r/20220830172614.340962-3-james.clark@arm.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
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Revision tags: v5.15.63, v5.15.62, v5.15.61, v5.15.60, v5.15.59, v5.19, v5.15.58, v5.15.57, v5.15.56, v5.15.55, v5.15.54, v5.15.53, v5.15.52, v5.15.51, v5.15.50, v5.15.49, v5.15.48, v5.15.47, v5.15.46, v5.15.45, v5.15.44, v5.15.43, v5.15.42, v5.18, v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34, v5.15.33, v5.15.32, v5.15.31, v5.17, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15, v5.16, v5.15.10, v5.15.9, v5.15.8, v5.15.7, v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15, v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10, v5.14.9, v5.14.8, v5.14.7, v5.14.6, v5.10.67, v5.10.66, v5.14.5, v5.14.4, v5.10.65 |
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#
7ba7ae1d |
| 12-Sep-2021 |
Leo Yan <leo.yan@linaro.org> |
coresight: Update comments for removing cs_etm_find_snapshot()
Commit 2f01c200d440 ("perf cs-etm: Remove callback cs_etm_find_snapshot()") has removed the function cs_etm_find_snapshot() from the pe
coresight: Update comments for removing cs_etm_find_snapshot()
Commit 2f01c200d440 ("perf cs-etm: Remove callback cs_etm_find_snapshot()") has removed the function cs_etm_find_snapshot() from the perf tool in the user space, now CoreSight trace directly uses the perf common function __auxtrace_mmap__read() to calcualte the head and size for AUX trace data in snapshot mode.
This patch updates the comments in drivers to make them generic and not stick to any specific function from perf tool.
Signed-off-by: Leo Yan <leo.yan@linaro.org> Link: https://lore.kernel.org/r/20210912125748.2816606-3-leo.yan@linaro.org Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
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Revision tags: v5.14.3, v5.10.64, v5.14.2, v5.10.63, v5.14.1, v5.10.62, v5.14, v5.10.61, v5.10.60, v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46, v5.10.43, v5.10.42, v5.10.41, v5.10.40, v5.10.39, v5.4.119, v5.10.36, v5.10.35, v5.10.34, v5.4.116, v5.10.33, v5.12, v5.10.32, v5.10.31, v5.10.30, v5.10.27, v5.10.26, v5.10.25, v5.10.24, v5.10.23, v5.10.22, v5.10.21, v5.10.20, v5.10.19, v5.4.101, v5.10.18, v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14 |
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#
8ce00296 |
| 01-Feb-2021 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Convert claim/disclaim operations to use access wrappers
Convert the generic CLAIM tag management APIs to use the device access layer abstraction.
Link: https://lore.kernel.org/r/2021011
coresight: Convert claim/disclaim operations to use access wrappers
Convert the generic CLAIM tag management APIs to use the device access layer abstraction.
Link: https://lore.kernel.org/r/20210110224850.1880240-7-suzuki.poulose@arm.com Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210201181351.1475223-9-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
02005282 |
| 01-Feb-2021 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Convert coresight_timeout to use access abstraction
Convert the generic routines to use the new access abstraction layer gradually, starting with coresigth_timeout.
Link: https://lore.ke
coresight: Convert coresight_timeout to use access abstraction
Convert the generic routines to use the new access abstraction layer gradually, starting with coresigth_timeout.
Link: https://lore.kernel.org/r/20210110224850.1880240-6-suzuki.poulose@arm.com Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210201181351.1475223-8-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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6e736c60 |
| 01-Feb-2021 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Introduce device access abstraction
We are about to introduce support for sysreg access to ETMv4.4+ component. Since there are generic routines that access the registers (e.g, CS_LOCK/UNL
coresight: Introduce device access abstraction
We are about to introduce support for sysreg access to ETMv4.4+ component. Since there are generic routines that access the registers (e.g, CS_LOCK/UNLOCK , claim/disclaim operations, timeout) and in order to preserve the logic of these operations at a single place we introduce an abstraction layer for the accesses to a given device.
Link: https://lore.kernel.org/r/20210110224850.1880240-4-suzuki.poulose@arm.com Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210201181351.1475223-6-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3fd269e7 |
| 26-Jan-2021 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
amba: Make the remove callback return void
All amba drivers return 0 in their remove callback. Together with the driver core ignoring the return value anyhow, it doesn't make sense to return a value
amba: Make the remove callback return void
All amba drivers return 0 in their remove callback. Together with the driver core ignoring the return value anyhow, it doesn't make sense to return a value here.
Change the remove prototype to return void, which makes it explicit that returning an error value doesn't work as expected. This simplifies changing the core remove callback to return void, too.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> # for hwtracing/coresight Acked-By: Vinod Koul <vkoul@kernel.org> # for dmaengine Acked-by: Guenter Roeck <linux@roeck-us.net> # for watchdog Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C Acked-by: Takashi Iwai <tiwai@suse.de> # for sound Acked-by: Vladimir Zapolskiy <vz@mleia.com> # for memory/pl172 Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210126165835.687514-5-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Revision tags: v5.10 |
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#
45fe7bef |
| 08-Dec-2020 |
Arnd Bergmann <arnd@arndb.de> |
coresight: remove broken __exit annotations
Functions that are annotated __exit are discarded for built-in drivers, but the .remove callback in a device driver must still be kept around to allow bin
coresight: remove broken __exit annotations
Functions that are annotated __exit are discarded for built-in drivers, but the .remove callback in a device driver must still be kept around to allow bind/unbind operations.
There is now a linker warning for the discarded symbol references:
`tmc_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-tmc-core.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-tmc-core.o `tpiu_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-tpiu.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-tpiu.o `etb_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-etb10.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-etb10.o `static_funnel_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-funnel.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-funnel.o `dynamic_funnel_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-funnel.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-funnel.o `static_replicator_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-replicator.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-replicator.o `dynamic_replicator_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-replicator.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-replicator.o `catu_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-catu.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-catu.o
Remove all those annotations.
Fixes: 8b0cf82677d1 ("coresight: stm: Allow to build coresight-stm as a module") Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201208182651.1597945-3-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
22b2beaa |
| 27-Nov-2020 |
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> |
coresight: etb10: Fix possible NULL ptr dereference in etb_enable_perf()
There was a report of NULL pointer dereference in ETF enable path for perf CS mode with PID monitoring. It is almost 100% rep
coresight: etb10: Fix possible NULL ptr dereference in etb_enable_perf()
There was a report of NULL pointer dereference in ETF enable path for perf CS mode with PID monitoring. It is almost 100% reproducible when the process to monitor is something very active such as chrome and with ETF as the sink, not ETR.
But code path shows that ETB has a similar path as ETF, so there could be possible NULL pointer dereference crash in ETB as well. Currently in a bid to find the pid, the owner is dereferenced via task_pid_nr() call in etb_enable_perf() and with owner being NULL, we can get a NULL pointer dereference, so have a similar fix as ETF where we cache PID in alloc_buffer() callback which is called as the part of etm_setup_aux().
Fixes: 75d7dbd38824 ("coresight: etb10: Add support for CPU-wide trace scenarios") Cc: stable@vger.kernel.org Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-11-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
939b32e1 |
| 08-Dec-2020 |
Arnd Bergmann <arnd@arndb.de> |
coresight: remove broken __exit annotations
[ Upstream commit 45fe7befe0db5e61cd3c846315f0ac48541e8445 ]
Functions that are annotated __exit are discarded for built-in drivers, but the .remove call
coresight: remove broken __exit annotations
[ Upstream commit 45fe7befe0db5e61cd3c846315f0ac48541e8445 ]
Functions that are annotated __exit are discarded for built-in drivers, but the .remove callback in a device driver must still be kept around to allow bind/unbind operations.
There is now a linker warning for the discarded symbol references:
`tmc_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-tmc-core.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-tmc-core.o `tpiu_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-tpiu.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-tpiu.o `etb_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-etb10.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-etb10.o `static_funnel_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-funnel.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-funnel.o `dynamic_funnel_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-funnel.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-funnel.o `static_replicator_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-replicator.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-replicator.o `dynamic_replicator_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-replicator.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-replicator.o `catu_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-catu.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-catu.o
Remove all those annotations.
Fixes: 8b0cf82677d1 ("coresight: stm: Allow to build coresight-stm as a module") Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201208182651.1597945-3-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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#
3e89c7f9 |
| 27-Nov-2020 |
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> |
coresight: etb10: Fix possible NULL ptr dereference in etb_enable_perf()
commit 22b2beaa7f166f550424cbb3b988aeaa7ef0425a upstream.
There was a report of NULL pointer dereference in ETF enable path
coresight: etb10: Fix possible NULL ptr dereference in etb_enable_perf()
commit 22b2beaa7f166f550424cbb3b988aeaa7ef0425a upstream.
There was a report of NULL pointer dereference in ETF enable path for perf CS mode with PID monitoring. It is almost 100% reproducible when the process to monitor is something very active such as chrome and with ETF as the sink, not ETR.
But code path shows that ETB has a similar path as ETF, so there could be possible NULL pointer dereference crash in ETB as well. Currently in a bid to find the pid, the owner is dereferenced via task_pid_nr() call in etb_enable_perf() and with owner being NULL, we can get a NULL pointer dereference, so have a similar fix as ETF where we cache PID in alloc_buffer() callback which is called as the part of etm_setup_aux().
Fixes: 75d7dbd38824 ("coresight: etb10: Add support for CPU-wide trace scenarios") Cc: stable@vger.kernel.org Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-11-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v5.8.17, v5.8.16, v5.8.15, v5.9, v5.8.14, v5.8.13 |
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#
529c4451 |
| 28-Sep-2020 |
Kim Phillips <kim.phillips@arm.com> |
coresight: etb: Allow etb to be built as a module
Allow to build coresight-etb10 as a module, for ease of development.
- Kconfig becomes a tristate, to allow =m - add an etb_remove function, for mo
coresight: etb: Allow etb to be built as a module
Allow to build coresight-etb10 as a module, for ease of development.
- Kconfig becomes a tristate, to allow =m - add an etb_remove function, for module unload - add a MODULE_DEVICE_TABLE for autoloading on boot
Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Russell King <linux@armlinux.org.uk> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-12-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
92fc7d81 |
| 28-Sep-2020 |
Tingwei Zhang <tingwei@codeaurora.org> |
coresight: Add coresight prefix to barrier_pkt
Add coresight prefix to make it specific. It will be a export symbol.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mian Yousa
coresight: Add coresight prefix to barrier_pkt
Add coresight prefix to make it specific. It will be a export symbol.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-5-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v5.8.12, v5.8.11, v5.8.10, v5.8.9, v5.8.8, v5.8.7, v5.8.6, v5.4.62, v5.8.5, v5.8.4, v5.4.61, v5.8.3, v5.4.60, v5.8.2, v5.4.59, v5.8.1, v5.4.58, v5.4.57, v5.4.56, v5.8, v5.7.12, v5.4.55, v5.7.11, v5.4.54, v5.7.10, v5.4.53, v5.4.52, v5.7.9, v5.7.8, v5.4.51, v5.4.50, v5.7.7, v5.4.49, v5.7.6, v5.7.5, v5.4.48, v5.7.4, v5.7.3, v5.4.47, v5.4.46, v5.7.2, v5.4.45, v5.7.1, v5.4.44, v5.7, v5.4.43, v5.4.42 |
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1c33c65c |
| 18-May-2020 |
Jason Yan <yanaijie@huawei.com> |
coresight: etb10: Make coresight_etb_groups static
Fix the following sparse warning:
drivers/hwtracing/coresight/coresight-etb10.c:720:30: warning: symbol 'coresight_etb_groups' was not declared. S
coresight: etb10: Make coresight_etb_groups static
Fix the following sparse warning:
drivers/hwtracing/coresight/coresight-etb10.c:720:30: warning: symbol 'coresight_etb_groups' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200518180242.7916-12-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v5.4.41, v5.4.40, v5.4.39, v5.4.38, v5.4.37, v5.4.36, v5.4.35, v5.4.34, v5.4.33, v5.4.32, v5.4.31, v5.4.30, v5.4.29, v5.6, v5.4.28, v5.4.27, v5.4.26, v5.4.25, v5.4.24, v5.4.23, v5.4.22, v5.4.21, v5.4.20, v5.4.19, v5.4.18, v5.4.17, v5.4.16, v5.5, v5.4.15, v5.4.14, v5.4.13, v5.4.12, v5.4.11, v5.4.10, v5.4.9, v5.4.8, v5.4.7, v5.4.6, v5.4.5, v5.4.4, v5.4.3, v5.3.15, v5.4.2, v5.4.1, v5.3.14, v5.4, v5.3.13, v5.3.12, v5.3.11, v5.3.10, v5.3.9, v5.3.8, v5.3.7, v5.3.6, v5.3.5, v5.3.4, v5.3.3, v5.3.2, v5.3.1, v5.3, v5.2.14, v5.3-rc8, v5.2.13, v5.2.12, v5.2.11, v5.2.10, v5.2.9, v5.2.8, v5.2.7, v5.2.6, v5.2.5, v5.2.4, v5.2.3, v5.2.2, v5.2.1, v5.2, v5.1.16, v5.1.15, v5.1.14, v5.1.13 |
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730766ba |
| 20-Jun-2019 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: etb10: Do not call smp_processor_id from preemptible
During a perf session we try to allocate buffers on the "node" associated with the CPU the event is bound to. If it is not bound to a
coresight: etb10: Do not call smp_processor_id from preemptible
During a perf session we try to allocate buffers on the "node" associated with the CPU the event is bound to. If it is not bound to a CPU, we use the current CPU node, using smp_processor_id(). However this is unsafe in a pre-emptible context and could generate the splats as below :
BUG: using smp_processor_id() in preemptible [00000000] code: perf/2544
Use NUMA_NO_NODE hint instead of using the current node for events not bound to CPUs.
Fixes: 2997aa4063d97fdb39 ("coresight: etb10: implementing AUX API") Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: stable <stable@vger.kernel.org> # 4.6+ Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20190620221237.3536-5-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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0f5f9b6b |
| 19-Jun-2019 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Use platform agnostic names
So far we have reused the name of the "platform" device for the CoreSight device. But this is not very intuitive when we move to ACPI. Also, the ACPI device na
coresight: Use platform agnostic names
So far we have reused the name of the "platform" device for the CoreSight device. But this is not very intuitive when we move to ACPI. Also, the ACPI device names have ":" in them (e.g, ARMHC97C:01), which the perf tool doesn't like very much. This patch introduces a generic naming scheme, givin more intuitive names for the devices that appear on the CoreSight bus. The names follow the pattern "prefix" followed by "index" (e.g, etm5). We maintain a list of allocated devices per "prefix" to make sure we don't allocate a new name when it is reprobed (e.g, due to unsatisifed device dependencies). So, we maintain the list of "fwnodes" of the parent devices to allocate a consistent name. All devices except the ETMs get an index allocated in the order of probing. ETMs get an index based on the CPU they are attached to.
TMC devices are named using "tmc_etf", "tmc_etb", and "tmc_etr" prefixes depending on the configuration of the device.
The replicators and funnels are not classified as dynamic/static anymore. One could easily figure that out by checking the presence of "mgmt" registers under sysfs.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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af7cfd0f |
| 19-Jun-2019 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Rearrange platform data probing
We are about to introduce methods to clean up the platform data as we switch to tracking the device reference from "name" to "fwnode handles" for device co
coresight: Rearrange platform data probing
We are about to introduce methods to clean up the platform data as we switch to tracking the device reference from "name" to "fwnode handles" for device connections. This requires us to drop the fwnode handle references when the data is no longer required - i.e, when the device probe fails or the device gets unregistered.
In order to consolidate the invocation of the cleanup, we delay the platform probing to the very last minute, possibly before invoking the coresight_register. Then, we leave the coresight core code to do the clean up. i.e, if the coresight_register fails, it takes care of freeing the data. Otherwise, coresight_unregister will do the necessary operations.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2ede79a6 |
| 19-Jun-2019 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Remove name from platform description
We are about to use a name independent of the parent AMBA device name. As such, there is no need to have it in the platform description. Let us move
coresight: Remove name from platform description
We are about to use a name independent of the parent AMBA device name. As such, there is no need to have it in the platform description. Let us move this to coresight description instead.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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f03631da |
| 19-Jun-2019 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: Introduce generic platform data helper
So far we have hard coded the DT platform parsing code in every driver. Introduce generic helper to parse the information provided by the firmware i
coresight: Introduce generic platform data helper
So far we have hard coded the DT platform parsing code in every driver. Introduce generic helper to parse the information provided by the firmware in a platform agnostic manner, in preparation for the ACPI support.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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7f84712a |
| 19-Jun-2019 |
Suzuki K Poulose <suzuki.poulose@arm.com> |
coresight: etb10: Clean up device specific data
Track the coresight device instead of the real device.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathi
coresight: etb10: Clean up device specific data
Track the coresight device instead of the real device.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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5aafd9bf |
| 19-Jun-2019 |
Mathieu Poirier <mathieu.poirier@linaro.org> |
coresight: perf: Don't set the truncated flag in snapshot mode
This patch avoids setting the truncated flag when operating in snapshot mode since the trace buffer is expected to be truncated and dis
coresight: perf: Don't set the truncated flag in snapshot mode
This patch avoids setting the truncated flag when operating in snapshot mode since the trace buffer is expected to be truncated and discontinuous from one snapshot to another. Moreover when the truncated flag is set the perf core stops enabling the event, waiting for user space to consume the data. In snapshot mode this is clearly not what we want since it results in stale data.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Tested-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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514e5150 |
| 19-Jun-2019 |
Mathieu Poirier <mathieu.poirier@linaro.org> |
coresight: etb10: Properly set AUX buffer head in snapshot mode
Unify amongst sink drivers how the AUX ring buffer head is communicated to user space. That way the same algorithm in user space can
coresight: etb10: Properly set AUX buffer head in snapshot mode
Unify amongst sink drivers how the AUX ring buffer head is communicated to user space. That way the same algorithm in user space can be used to determine where the latest data is and how much of it to access.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Tested-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v5.1.12, v5.1.11, v5.1.10, v5.1.9, v5.1.8, v5.1.7, v5.1.6, v5.1.5, v5.1.4, v5.1.3, v5.1.2, v5.1.1, v5.0.14, v5.1, v5.0.13, v5.0.12, v5.0.11, v5.0.10 |
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75d7dbd3 |
| 25-Apr-2019 |
Mathieu Poirier <mathieu.poirier@linaro.org> |
coresight: etb10: Add support for CPU-wide trace scenarios
This patch adds support for CPU-wide trace scenarios by making sure that only the sources monitoring the same process have access to a comm
coresight: etb10: Add support for CPU-wide trace scenarios
This patch adds support for CPU-wide trace scenarios by making sure that only the sources monitoring the same process have access to a common sink. Because the sink is shared between sources, the first source to use the sink switches it on while the last one does the cleanup. Any attempt to modify the HW is overlooked for as long as more than one source is using a sink.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Tested-by: Robert Walker <robert.walker@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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