These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / ABI / testing / sysfs-bus-intel_th-devices-msc

diff --git a/kernel/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc b/kernel/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc
new file mode 100644 (file)
index 0000000..b940c5d
--- /dev/null
+++ b/kernel/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc
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+What:          /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/wrap
+Date:          June 2015
+KernelVersion: 4.3
+Contact:       Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Description:   (RW) Configure MSC buffer wrapping. 1 == wrapping enabled.
+
+What:          /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/mode
+Date:          June 2015
+KernelVersion: 4.3
+Contact:       Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Description:   (RW) Configure MSC operating mode:
+                 - "single", for contiguous buffer mode (high-order alloc);
+                 - "multi", for multiblock mode;
+                 - "ExI", for DCI handler mode;
+                 - "debug", for debug mode.
+               If operating mode changes, existing buffer is deallocated,
+               provided there are no active users and tracing is not enabled,
+               otherwise the write will fail.
+
+What:          /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/nr_pages
+Date:          June 2015
+KernelVersion: 4.3
+Contact:       Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Description:   (RW) Configure MSC buffer size for "single" or "multi" modes.
+               In single mode, this is a single number of pages, has to be
+               power of 2. In multiblock mode, this is a comma-separated list
+               of numbers of pages for each window to be allocated. Number of
+               windows is not limited.
+               Writing to this file deallocates existing buffer (provided
+               there are no active users and tracing is not enabled) and then
+               allocates a new one.
+
+