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2021-08-18Documentation: coresight: Add documentation for CoreSight configMike Leach2-0/+259
Adds documentation for the CoreSight System configuration manager. Link: https://lore.kernel.org/r/20210723165444.1048-11-mike.leach@linaro.org [Fixed coresight-config.rst documentation link] Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-11-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: syscfg: Add initial configfs supportMike Leach6-1/+527
Adds configfs subsystem and attributes to the configuration manager to enable the listing of loaded configurations and features. The default values of feature parameters can be accessed and altered from these attributes to affect all installed devices using the feature. Link: https://lore.kernel.org/r/20210723165444.1048-10-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-10-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: config: Add preloaded configurationsMike Leach7-1/+224
Preload set of configurations. This patch creates a small set of preloaded configurations and features that are available immediately after coresight has been initialised. The current set provides a strobing feature for ETMv4, that creates a periodic sampling of trace by switching trace generation on and off using counters in the ETM. A configuration called "autofdo" is also provided that uses the 'strobing' feature and provides a couple of preset values, selectable on the perf command line. Link: https://lore.kernel.org/r/20210723165444.1048-9-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-9-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: etm4x: Add complex configuration handlers to etmv4Mike Leach5-3/+238
Adds in handlers to allow the ETMv4 to use the complex configuration support. Features and configurations can be loaded and selected in the device. Link: https://lore.kernel.org/r/20210723165444.1048-8-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-8-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: etm-perf: Update to activate selected configurationMike Leach2-1/+15
Add calls to activate the selected configuration as perf starts and stops the tracing session. Link: https://lore.kernel.org/r/20210723165444.1048-7-mike.leach@linaro.org Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-7-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: syscfg: Add API to activate and enable configurationsMike Leach4-0/+227
Configurations are first activated, then when any coresight device is enabled, the active configurations are checked and any matching one is enabled. This patch provides the activation / enable API. Link: https://lore.kernel.org/r/20210723165444.1048-6-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-6-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: etm-perf: Update to handle configuration selectionMike Leach4-28/+127
Loaded coresight configurations are registered in the cs_etm\events sub directory. This extends the etm-perf code to handle these registrations, and the cs_syscfg driver to perform the registration on load. Link: https://lore.kernel.org/r/20210723165444.1048-5-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-5-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: config: Add configuration and feature generic functionsMike Leach4-2/+284
Adds a set of generic support functions that allow devices to set and save features values on the device, and enable and disable configurations. Additional functions for other common operations including feature reset. Link: https://lore.kernel.org/r/20210723165444.1048-4-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-4-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: syscfg: Add registration and feature loading for cs devicesMike Leach4-1/+461
API for individual devices to register with the syscfg management system is added. Devices register with matching information, and any features or configurations that match will be loaded into the device. The feature and configuration loading is extended so that on load these are loaded into any currently registered devices. This allows configuration loading after devices have been registered. Link: https://lore.kernel.org/r/20210723165444.1048-3-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-3-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18coresight: syscfg: Initial coresight system configurationMike Leach7-4/+401
Creates an system management API to allow complex configurations and features to be programmed into a CoreSight infrastructure. A feature is defined as a programming set for a device or class of devices. A configuration is a set of features across the system that are enabled for a trace session. The API will manage system wide configuration, and allow complex programmed features to be added to individual device instances, and provide for system wide configuration selection on trace capture operations. This patch creates the initial data object and the initial API for loading configurations and features. Link: https://lore.kernel.org/r/20210723165444.1048-2-mike.leach@linaro.org Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210818194022.379573-2-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18lkdtm/heap: Avoid __alloc_size hint warning for VMALLOC_LINEAR_OVERFLOWKees Cook1-1/+8
Once __alloc_size hints have been added, the compiler will (correctly!) see this as an overflow. We are, however, trying to test for this condition at run-time (not compile-time), so work around it with a volatile int offset. Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210818174855.2307828-5-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18lkdtm: Add kernel version to failure hintsKees Cook1-8/+12
In an effort to keep as much information in once place as possible in CI logs, report the kernel version and architecture in the failure hints. Cc: Arnd Bergmann <arnd@arndb.de> Cc: kernelci@groups.io Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210818174855.2307828-4-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18lkdtm/fortify: Consolidate FORTIFY_SOURCE testsKees Cook5-54/+59
The FORTIFY_SOURCE tests were split between bugs.c and fortify.c. Move tests into fortify.c, standardize their naming, add CONFIG hints, and add them to the lkdtm selftests. Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210818174855.2307828-3-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18lkdtm/bugs: Add ARRAY_BOUNDS to selftestsKees Cook3-0/+4
Add CONFIG hints about why the ARRAY_BOUNDS test might fail, and similarly include the CONFIGs needed to pass the ARRAY_BOUNDS test via the selftests, and add to selftests. Cc: kernelci@groups.io Suggested-by: Guillaume Tucker <guillaume.tucker@collabora.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210818174855.2307828-2-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18firmware: raspberrypi: Fix a leak in 'rpi_firmware_get()'Christophe JAILLET1-2/+8
The reference taken by 'of_find_device_by_node()' must be released when not needed anymore. Add the corresponding 'put_device()' in the normal and error handling paths. Fixes: 4e3d60656a72 ("ARM: bcm2835: Add the Raspberry Pi firmware driver") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/5e17e5409b934cd08bf6f9279c73be5c1cb11cce.1628232242.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-16char: move RANDOM_TRUST_CPU & RANDOM_TRUST_BOOTLOADER into the Character devices menuRandy Dunlap1-2/+2
Include RANDOM_TRUST_CPU and RANDOM_TRUST_BOOTLOADER inside the "Character devices" menu so that they are listed (presented) with other Character devices. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hsin-Yi Wang <hsinyi@chromium.org> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20210816000531.17934-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-16misc: gehc-achc: Fix spelling mistake "Verfication" -> "Verification"Colin Ian King1-1/+1
There is a spelling mistake in a dev_dbg debug message. Fix it. Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20210815214206.47970-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-13nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTPEmmanuel Gil Peyrot3-0/+137
This OTP is read-only and contains various keys used by the console to decrypt, encrypt or verify various pieces of storage. Its size depends on the console, it is 128 bytes on the Wii and 1024 bytes on the Wii U (split into eight 128 bytes banks). It can be used directly by writing into one register and reading from the other one, without any additional synchronisation. This driver was written based on reversed documentation, see: https://wiiubrew.org/wiki/Hardware/OTP Tested-by: Jonathan Neuschäfer <j.ne@posteo.net> # on Wii Tested-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> # on Wii U Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20210810153036.1494-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>