- 02 May, 2019 5 commits
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Pierre-Louis Bossart authored
Use Linux style Reviewed-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pierre-Louis Bossart authored
use Linux style Reviewed-by:
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Vinod Koul authored
Some more headers had C++ style SDPX line, fix that and change copyright so that it is consistent with rest of the code in subsystem Signed-off-by:
Vinod Koul <vkoul@kernel.org> Signed-off-by:
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Pierre-Louis Bossart authored
No C++ comments in .h files Reviewed-by:
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Pierre-Louis Bossart authored
Move to the regular help format, --help-- is no longer recommended. Reviewed-by:
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- 29 Apr, 2019 1 commit
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Greg Kroah-Hartman authored
Merge tag 'soundwire-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next Vinod writes: soundwire updates for v5.2-rc1 This round saw interest from Intel, Linaro and Cadence in Soundwire. More patches are in pipeline (maybe next cycle) - removal of useless initialzation in core - couple of header and kcalloc inversion fixes on Intel driver * tag 'soundwire-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: soundwire: intel: fix implicit header use of module.h/export.h soundwire: stream: remove useless initialization of local variable soundwire: remove useless initializations soundwire: intel: fix inversion in devm_kcalloc parameters
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- 27 Apr, 2019 3 commits
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Greg Kroah-Hartman authored
Merge tag 'thunderbolt-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into char-misc-next Mika writes: thunderbolt: Changes for v5.2 merge window This improves software connection manager on older Apple systems with Thunderbolt 1 and 2 controller to support full PCIe daisy chains, Display Port tunneling and P2P networking. There are also fixes for potential NULL pointer dereferences at various places in the driver. * tag 'thunderbolt-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (44 commits) thunderbolt: Make priority unsigned in struct tb_path thunderbolt: Start firmware on Titan Ridge Apple systems thunderbolt: Reword output of tb_dump_hop() thunderbolt: Make rest of the logging to happen at debug level thunderbolt: Make __TB_[SW|PORT]_PRINT take const parameters thunderbolt: Add support for XDomain connections thunderbolt: Make tb_switch_alloc() return ERR_PTR() thunderbolt: Add support for DMA tunnels thunderbolt: Add XDomain UUID exchange support thunderbolt: Run tb_xdp_handle_request() in system workqueue thunderbolt: Do not tear down tunnels when driver is unloaded thunderbolt: Add support for Display Port tunnels thunderbolt: Rework NFC credits handling thunderbolt: Generalize port finding routines to support all port types thunderbolt: Scan only valid NULL adapter ports in hotplug thunderbolt: Add support for full PCIe daisy chains thunderbolt: Discover preboot PCIe paths the boot firmware established thunderbolt: Deactivate all paths before restarting them thunderbolt: Extend tunnel creation to more than 2 adjacent switches thunderbolt: Add helper function to iterate from one port to another ...
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Mariusz Bialonczyk authored
>From the DS2408 datasheet [1]: "Resume Command function checks the status of the RC flag and, if it is set, directly transfers control to the control functions, similar to a Skip ROM command. The only way to set the RC flag is through successfully executing the Match ROM, Search ROM, Conditional Search ROM, or Overdrive-Match ROM command" The function currently works perfectly fine in a multidrop bus, but when we have only a single slave connected, then only a Skip ROM is used and Match ROM is not called at all. This is leading to problems e.g. with single one DS2408 connected, as the Resume Command is not working properly and the device is responding with failing results after the Resume Command. This commit is fixing this by using a Skip ROM instead in those cases. The bandwidth / performance advantage is exactly the same. Refs: [1] https://datasheets.maximintegrated.com/en/ds/DS2408.pdfSigned-off-by:
Mariusz Bialonczyk <manio@skyboo.net> Reviewed-by:
Jean-Francois Dagenais <jeff.dagenais@gmail.com> Signed-off-by:
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Patrick Venture authored
Fix up mixed declarations and code in aspeed_p2a_mmap. Tested: Verified the build had the error and that this patch resolved it and there were no other warnings or build errors associated with compilation of this driver. Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Patrick Venture <venture@google.com> Signed-off-by:
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- 25 Apr, 2019 31 commits
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Patrick Venture authored
Fixup compiler warnings: - 108 warning: ISO C90 forbids mixed declarations and code - 264 warning: unused variable 'value' - 335 warning: unused variable 'res' Reported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
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Kangjie Lu authored
In case platform_device_alloc fails, the fix returns an error code to avoid the NULL pointer dereference. Signed-off-by:
Kangjie Lu <kjlu@umn.edu> Signed-off-by:
Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by:
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Young Xiao authored
There is an out-of-bounds access to "config[len - 1]" array when the variable "len" is zero. See commit dada6a43 ("kgdboc: fix KASAN global-out-of-bounds bug in param_set_kgdboc_var()") for details. Signed-off-by:
Young Xiao <YangX92@hotmail.com> Signed-off-by:
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Lucas Stach authored
Add compatible for i.MX8MQ and add i.MX7D/S, i.MX7ULP and i.M8MQ to the description. Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Reviewed-by:
Rob Herring <robh@kernel.org> Reviewed-by:
Abel Vesa <abel.vesa@nxp.com> Signed-off-by:
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Mathieu Poirier authored
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:
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Mathieu Poirier authored
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:
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Mathieu Poirier authored
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:
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Mathieu Poirier authored
This patch uses the PID of the process being traced to allocate and free ETR memory buffers for CPU-wide scenarios. The implementation is tailored to handle both N:1 and 1:1 source/sink HW topologies. Signed-off-by:
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Mathieu Poirier authored
In CPU-wide scenarios with an N:1 source/sink topology, sources share the same sink. In order to reuse the same sink for all sources an IDR is needed to archive events that have already been accounted for. Signed-off-by:
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Mathieu Poirier authored
This patch adds reference counting to struct etr_buf so that, in CPU-wide trace scenarios, shared buffers can be disposed of when no longer used. Signed-off-by:
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Mathieu Poirier authored
In preparation to support CPU-wide trace scenarios, introduce the notion of process ID to ETR devices. That way events monitoring the same process can use the same etr_buf, allowing multiple CPUs to use the same sink. Signed-off-by:
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Mathieu Poirier authored
Buffer allocation is different when dealing with per-thread and CPU-wide sessions. In preparation to support CPU-wide trace scenarios simplify things by keeping allocation functions for both type separate. Signed-off-by:
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Mathieu Poirier authored
Refactoring function tmc_etr_setup_perf_buf() so that it only deals with the high level etr_perf_buffer, leaving the allocation of the backend buffer (i.e etr_buf) to another function. That way the backend buffer allocation function can decide if it wants to reuse an existing buffer (CPU-wide trace scenarios) or simply create a new one. Signed-off-by:
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Mathieu Poirier authored
Make struct perf_event available to sink buffer allocation functions in order to use the pid they carry to allocate and free buffer memory along with regimenting access to what source a sink can collect data for. Signed-off-by:
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Mathieu Poirier authored
Function free_event_data() is already busy and is bound to become worse with the addition of CPU-wide trace scenarios. As such spin off a new function to strickly take care of the sink buffers. Signed-off-by:
Suzuki K Poulose <suzuki.poulose@arm.com> Tested-by:
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Mathieu Poirier authored
There is no point in allocating sink memory for a trace session if there is not a way to free it once it is no longer needed. As such make sure the sink API function to allocate and free memory have been implemented before moving ahead with the establishment of a trace session. Signed-off-by:
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Mathieu Poirier authored
When operating in CPU-wide trace scenarios and working with an N:1 source/sink HW topology, update() functions need to be made atomic in order to avoid racing with start and stop operations. Signed-off-by:
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Mathieu Poirier authored
When disabling a sink the reference counter ensures the operation goes through if nobody else is using it. As such if drvdata::mode is already set do CS_MODE_DISABLED, it is an error and should be reported as such. Signed-off-by:
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Mathieu Poirier authored
When operating in CPU-wide mode with an N:1 source/sink HW topology, multiple CPUs can access a sink concurrently. As such reference counting needs to happen when the device's spinlock is held to avoid racing with other operations (start(), update(), stop()), such as: session A Session B ----- ------- enable_sink atomic_inc(refcount) = 1 ... atomic_dec(refcount) = 0 enable_sink if (refcount == 0) disable_sink atomic_inc() Signed-off-by:
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Mathieu Poirier authored
In preparation to handle device reference counting inside of the sink drivers, add a return code to the sink::disable() operation so that proper action can be taken if a sink has not been disabled. Signed-off-by:
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Mathieu Poirier authored
Configure timestamps to be emitted at regular intervals in the trace stream to temporally correlate instructions executed on different CPUs. Signed-off-by:
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Mathieu Poirier authored
Resource selector pair 0 is always implemented and reserved. As such it should not be explicitly programmed. Signed-off-by:
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Mathieu Poirier authored
Set the proper bit in the configuration register when contextID tracing has been requested by user space. That way PE_CONTEXT elements are generated by the tracers when a process is installed on a CPU. Signed-off-by:
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Mathieu Poirier authored
Add to the capabilities the ITRACE property so that ITRACE START events are generated when the PMU is switched on by the core. Signed-off-by:
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Suzuki K Poulose authored
Drop the power only if we were successful in probing the device. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
Drop the power handle only if we were successful. Otherwise the AMBA bus code would do the rest. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
Drop the power only when we have successfully probed. Otherwise leave it to the amba probe to do the rest. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
We drop the power before we complete the probe successfully. We are supposed to drop it only when we are successful. Also, probing the etb_buffer_length happens with the power turned up. So we don't need to do that again in the helper. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
With commit c2c72941 ("coresight: platform: Cleanup coresight connection handling"), we switched to re-using coresight_connections for the coresight_device. However, that introduced a mismatch in the alloc/free of the connections. The allocation is made using devm_*, while we use kfree() to release the memory when a device is released (even though we don't support this at the moment). Fix this by leaving it to the automatic freeing of the memory. Fixes: c2c72941 ("coresight: platform: Cleanup coresight connection handling") Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
Merge the drivers for the two varieties of replicators into a singel one. The dynamic replicator has programming base which can be programmed to filter the trace data. The driver detects the type based on the "base" address value of the device, which is NULL for the static device. Also, while at it, remove the now obsolete DYNAMIC_REPLICATOR config entry. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
Rename the dynamic replicator specific routines for merging with the replicator driver. Also re-arrange the probe routine to make it easier to merge. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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