1What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/wrap 2Date: June 2015 3KernelVersion: 4.3 4Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 5Description: (RW) Configure MSC buffer wrapping. 1 == wrapping enabled. 6 7What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/mode 8Date: June 2015 9KernelVersion: 4.3 10Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 11Description: (RW) Configure MSC operating mode: 12 - "single", for contiguous buffer mode (high-order alloc); 13 - "multi", for multiblock mode; 14 - "ExI", for DCI handler mode; 15 - "debug", for debug mode. 16 If operating mode changes, existing buffer is deallocated, 17 provided there are no active users and tracing is not enabled, 18 otherwise the write will fail. 19 20What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/nr_pages 21Date: June 2015 22KernelVersion: 4.3 23Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 24Description: (RW) Configure MSC buffer size for "single" or "multi" modes. 25 In single mode, this is a single number of pages, has to be 26 power of 2. In multiblock mode, this is a comma-separated list 27 of numbers of pages for each window to be allocated. Number of 28 windows is not limited. 29 Writing to this file deallocates existing buffer (provided 30 there are no active users and tracing is not enabled) and then 31 allocates a new one. 32 33What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/win_switch 34Date: May 2019 35KernelVersion: 5.2 36Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 37Description: (RW) Trigger window switch for the MSC's buffer, in 38 multi-window mode. In "multi" mode, accepts writes of "1", thereby 39 triggering a window switch for the buffer. Returns an error in any 40 other operating mode or attempts to write something other than "1". 41 42