1 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/wrap
4 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
5 Description: (RW) Configure MSC buffer wrapping. 1 == wrapping enabled.
7 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/mode
10 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
11 Description: (RW) Configure MSC operating mode:
13 - "single", for contiguous buffer mode (high-order alloc);
14 - "multi", for multiblock mode;
15 - "ExI", for DCI handler mode;
16 - "debug", for debug mode;
17 - any of the currently loaded buffer sinks.
19 If operating mode changes, existing buffer is deallocated,
20 provided there are no active users and tracing is not enabled,
21 otherwise the write will fail.
23 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/nr_pages
26 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
27 Description: (RW) Configure MSC buffer size for "single" or "multi" modes.
29 In single mode, this is a single number of pages, has to be
30 power of 2. In multiblock mode, this is a comma-separated list
31 of numbers of pages for each window to be allocated. Number of
32 windows is not limited.
34 Writing to this file deallocates existing buffer (provided
35 there are no active users and tracing is not enabled) and then
38 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/win_switch
41 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
42 Description: (RW) Trigger window switch for the MSC's buffer, in
43 multi-window mode. In "multi" mode, accepts writes of "1", thereby
44 triggering a window switch for the buffer. Returns an error in any
45 other operating mode or attempts to write something other than "1".
47 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/stop_on_full
50 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
51 Description: (RW) Configure whether trace stops when the last available window
52 becomes full (1/y/Y) or wraps around and continues until the next
53 window becomes available again (0/n/N).