1ba82664cSAlexander ShishkinWhat: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/wrap 2ba82664cSAlexander ShishkinDate: June 2015 3ba82664cSAlexander ShishkinKernelVersion: 4.3 4ba82664cSAlexander ShishkinContact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 5ba82664cSAlexander ShishkinDescription: (RW) Configure MSC buffer wrapping. 1 == wrapping enabled. 6ba82664cSAlexander Shishkin 7ba82664cSAlexander ShishkinWhat: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/mode 8ba82664cSAlexander ShishkinDate: June 2015 9ba82664cSAlexander ShishkinKernelVersion: 4.3 10ba82664cSAlexander ShishkinContact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 11ba82664cSAlexander ShishkinDescription: (RW) Configure MSC operating mode: 12*34433332SMauro Carvalho Chehab 13ba82664cSAlexander Shishkin - "single", for contiguous buffer mode (high-order alloc); 14ba82664cSAlexander Shishkin - "multi", for multiblock mode; 15ba82664cSAlexander Shishkin - "ExI", for DCI handler mode; 16615c164dSAlexander Shishkin - "debug", for debug mode; 17615c164dSAlexander Shishkin - any of the currently loaded buffer sinks. 18*34433332SMauro Carvalho Chehab 19ba82664cSAlexander Shishkin If operating mode changes, existing buffer is deallocated, 20ba82664cSAlexander Shishkin provided there are no active users and tracing is not enabled, 21ba82664cSAlexander Shishkin otherwise the write will fail. 22ba82664cSAlexander Shishkin 23ba82664cSAlexander ShishkinWhat: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/nr_pages 24ba82664cSAlexander ShishkinDate: June 2015 25ba82664cSAlexander ShishkinKernelVersion: 4.3 26ba82664cSAlexander ShishkinContact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 27ba82664cSAlexander ShishkinDescription: (RW) Configure MSC buffer size for "single" or "multi" modes. 28*34433332SMauro Carvalho Chehab 29ba82664cSAlexander Shishkin In single mode, this is a single number of pages, has to be 30ba82664cSAlexander Shishkin power of 2. In multiblock mode, this is a comma-separated list 31ba82664cSAlexander Shishkin of numbers of pages for each window to be allocated. Number of 32ba82664cSAlexander Shishkin windows is not limited. 33*34433332SMauro Carvalho Chehab 34ba82664cSAlexander Shishkin Writing to this file deallocates existing buffer (provided 35ba82664cSAlexander Shishkin there are no active users and tracing is not enabled) and then 36ba82664cSAlexander Shishkin allocates a new one. 37ba82664cSAlexander Shishkin 386cac7866SAlexander ShishkinWhat: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/win_switch 396cac7866SAlexander ShishkinDate: May 2019 406cac7866SAlexander ShishkinKernelVersion: 5.2 416cac7866SAlexander ShishkinContact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 426cac7866SAlexander ShishkinDescription: (RW) Trigger window switch for the MSC's buffer, in 436cac7866SAlexander Shishkin multi-window mode. In "multi" mode, accepts writes of "1", thereby 446cac7866SAlexander Shishkin triggering a window switch for the buffer. Returns an error in any 456cac7866SAlexander Shishkin other operating mode or attempts to write something other than "1". 46ba82664cSAlexander Shishkin 478622dfefSAlexander ShishkinWhat: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/stop_on_full 488622dfefSAlexander ShishkinDate: March 2020 498622dfefSAlexander ShishkinKernelVersion: 5.7 508622dfefSAlexander ShishkinContact: Alexander Shishkin <alexander.shishkin@linux.intel.com> 518622dfefSAlexander ShishkinDescription: (RW) Configure whether trace stops when the last available window 528622dfefSAlexander Shishkin becomes full (1/y/Y) or wraps around and continues until the next 538622dfefSAlexander Shishkin window becomes available again (0/n/N). 548622dfefSAlexander Shishkin 55