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Linux/Documentation/ABI/testing/sysfs-devices-mapping

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Diff markup

Differences between /Documentation/ABI/testing/sysfs-devices-mapping (Version linux-6.12-rc7) and /Documentation/ABI/testing/sysfs-devices-mapping (Version linux-2.6.32.71)


  1 What:           /sys/devices/uncore_iio_x/dieX    
  2 Date:           February 2020                     
  3 Contact:        Alexander Antonov <alexander.an    
  4 Description:                                      
  5                 Each IIO stack (PCIe root port    
  6                 each dieX file (where X is die    
  7                 for PCIe root port, which can     
  8                 block.                            
  9                 For example, on 4-die Xeon pla    
 10                 die and, therefore, 6 IIO PMON    
 11                 IIO PMON block 0 exposes as th    
 12                                                   
 13                     $ ls /sys/devices/uncore_i    
 14                     -r--r--r-- /sys/devices/un    
 15                     -r--r--r-- /sys/devices/un    
 16                     -r--r--r-- /sys/devices/un    
 17                     -r--r--r-- /sys/devices/un    
 18                                                   
 19                     $ tail /sys/devices/uncore    
 20                     ==> /sys/devices/uncore_ii    
 21                     0000:00                       
 22                     ==> /sys/devices/uncore_ii    
 23                     0000:40                       
 24                     ==> /sys/devices/uncore_ii    
 25                     0000:80                       
 26                     ==> /sys/devices/uncore_ii    
 27                     0000:c0                       
 28                                                   
 29                 Which means::                     
 30                                                   
 31                     IIO PMU 0 on die 0 belongs    
 32                     IIO PMU 0 on die 1 belongs    
 33                     IIO PMU 0 on die 2 belongs    
 34                     IIO PMU 0 on die 3 belongs    
 35                                                   
 36 What:           /sys/devices/uncore_upi_x/dieX    
 37 Date:           March 2022                        
 38 Contact:        Alexander Antonov <alexander.an    
 39 Description:                                      
 40                 Each /sys/devices/uncore_upi_X    
 41                 value that means UPI link numb    
 42                 link Z on die W and this link     
 43                 by UPI PMON block.                
 44                 For example, 4-die Sapphire Ra    
 45                 UPI 0 topology::                  
 46                                                   
 47                     # tail /sys/devices/uncore    
 48                     ==> /sys/devices/uncore_up    
 49                     upi_1,die_1                   
 50                     ==> /sys/devices/uncore_up    
 51                     upi_0,die_3                   
 52                     ==> /sys/devices/uncore_up    
 53                     upi_1,die_3                   
 54                     ==> /sys/devices/uncore_up    
 55                     upi_0,die_1                   
 56                                                   
 57                 Which means::                     
 58                                                   
 59                     UPI link 0 on die 0 is con    
 60                     UPI link 0 on die 1 is con    
 61                     UPI link 0 on die 2 is con    
 62                     UPI link 0 on die 3 is con    
                                                      

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