Changes in sysfs-bus-intel_th-devices-msc

34433332 - docs: ABI: testing: make the files compatible with ReST output

Fri, 30 Oct 2020 07:40:39 +0000

docs: ABI: testing: make the files compatible with ReST outputSome files over there won't parse well by Sphinx.Fix them.Acked-by: Jonathan Cameron # for IIOAcked-by: Fabrice Gasnier Acked-by: Jonathan Corbet Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/58cf3c2d611e0197fb215652719ebd82ca2658db.1604042072.git.mchehab+huawei@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc

8622dfef - intel_th: msu: Make stopping the trace optional

Thu, 19 Mar 2020 08:51:52 +0000

intel_th: msu: Make stopping the trace optionalSome use cases prefer to keep collecting the trace data into the lastavailable window while the other windows are being offloaded instead ofstopping the trace. In this scenario, the window switch happensautomatically when the next window becomes available again.Add an option to allow this and a sysfs attribute to enable it.Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200319085152.52183-1-alexander.shishkin@linux.intel.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc

615c164d - intel_th: msu: Introduce buffer interface

Fri, 05 Jul 2019 14:14:21 +0000

intel_th: msu: Introduce buffer interfaceIntroduces a concept of external buffers, which is a mechanism for creatingtrace sinks that would receive trace data from MSC buffers and transfer itelsewhere.A external buffer can implement its own window allocation/deallocation ifit has to. It must provide a callback that's used to notify it when awindow fills up, so that it can then start a DMA transaction from thatwindow 'elsewhere'. This window remains in a 'locked' state and won't beused for storing new trace data until the buffer 'unlocks' it with aprovided API call, at which point the window can be used again for storingtrace data.This relies on a functional "last block" interrupt, so not all versions ofTrace Hub can use this feature, which does not reflect on existing users.Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20190705141425.19894-2-alexander.shishkin@linux.intel.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc

6cac7866 - intel_th: msu: Add a sysfs attribute to trigger window switch

Fri, 03 May 2019 08:44:50 +0000

intel_th: msu: Add a sysfs attribute to trigger window switchNow that we have the means to trigger a window switch for the MSU tracestore, add a sysfs file to allow triggering it from userspace.Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc

ba82664c - intel_th: Add Memory Storage Unit driver

Tue, 22 Sep 2015 12:47:18 +0000

intel_th: Add Memory Storage Unit driverMemory Storage Unit (MSU) is a trace output device that collects tracedata to system memory. It consists of 2 independent Memory StorageControllers (MSCs).This driver provides userspace interfaces to configure in-memory tracingparameters, such as contiguous (high-order allocation) buffer or multiblock(scatter list) buffer mode, wrapping (data overwrite) and number and sizesof windows in multiblock mode. Userspace can read the buffers via mmap()ingor read()ing of the corresponding device node.Signed-off-by: Laurent Fert Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc