What: /sys/bus/intel_th/devices/-msc/wrap Date: June 2015 KernelVersion: 4.3 Contact: Alexander Shishkin Description: (RW) Configure MSC buffer wrapping. 1 == wrapping enabled. What: /sys/bus/intel_th/devices/-msc/mode Date: June 2015 KernelVersion: 4.3 Contact: Alexander Shishkin 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; - any of the currently loaded buffer sinks. 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/-msc/nr_pages Date: June 2015 KernelVersion: 4.3 Contact: Alexander Shishkin 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. What: /sys/bus/intel_th/devices/-msc/win_switch Date: May 2019 KernelVersion: 5.2 Contact: Alexander Shishkin Description: (RW) Trigger window switch for the MSC's buffer, in multi-window mode. In "multi" mode, accepts writes of "1", thereby triggering a window switch for the buffer. Returns an error in any other operating mode or attempts to write something other than "1". What: /sys/bus/intel_th/devices/-msc/stop_on_full Date: March 2020 KernelVersion: 5.7 Contact: Alexander Shishkin Description: (RW) Configure whether trace stops when the last available window becomes full (1/y/Y) or wraps around and continues until the next window becomes available again (0/n/N).