1 What: /sys/devices/system/cpu/dscr_d 1 What: /sys/devices/system/cpu/dscr_default
2 Date: 13-May-2014 2 Date: 13-May-2014
3 KernelVersion: v3.15.0 3 KernelVersion: v3.15.0
4 Contact: 4 Contact:
5 Description: Writes are equivalent to writi 5 Description: Writes are equivalent to writing to
6 /sys/devices/system/cpu/cpuN/d 6 /sys/devices/system/cpu/cpuN/dscr on all CPUs.
7 Reads return the last written 7 Reads return the last written value or 0.
8 This value is not a global def 8 This value is not a global default: it is a way to set
9 all per-CPU defaults at the sa 9 all per-CPU defaults at the same time.
10 Values: 64 bit unsigned integer (bit f 10 Values: 64 bit unsigned integer (bit field)
11 11
12 What: /sys/devices/system/cpu/cpu[0- 12 What: /sys/devices/system/cpu/cpu[0-9]+/dscr
13 Date: 13-May-2014 13 Date: 13-May-2014
14 KernelVersion: v3.15.0 14 KernelVersion: v3.15.0
15 Contact: 15 Contact:
16 Description: Default value for the Data Str 16 Description: Default value for the Data Stream Control Register (DSCR) on
17 a CPU. 17 a CPU.
18 This default value is used whe 18 This default value is used when the kernel is executing and
19 for any process that has not s 19 for any process that has not set the DSCR itself.
20 If a process ever sets the DSC 20 If a process ever sets the DSCR (via direct access to the
21 SPR) that value will be persis 21 SPR) that value will be persisted for that process and used
22 on any CPU where it executes ( 22 on any CPU where it executes (overriding the value described
23 here). 23 here).
24 If set by a process it will be 24 If set by a process it will be inherited by child processes.
25 Values: 64 bit unsigned integer (bit f 25 Values: 64 bit unsigned integer (bit field)
26 26
27 What: /sys/devices/system/cpu/cpuX/t 27 What: /sys/devices/system/cpu/cpuX/topology/physical_package_id
28 Description: physical package id of cpuX. T 28 Description: physical package id of cpuX. Typically corresponds to a physical
29 socket number, but the actual 29 socket number, but the actual value is architecture and platform
30 dependent. 30 dependent.
31 Values: integer 31 Values: integer
32 32
33 What: /sys/devices/system/cpu/cpuX/t 33 What: /sys/devices/system/cpu/cpuX/topology/die_id
34 Description: the CPU die ID of cpuX. Typica 34 Description: the CPU die ID of cpuX. Typically it is the hardware platform's
35 identifier (rather than the ke 35 identifier (rather than the kernel's). The actual value is
36 architecture and platform depe 36 architecture and platform dependent.
37 Values: integer 37 Values: integer
38 38
39 What: /sys/devices/system/cpu/cpuX/t 39 What: /sys/devices/system/cpu/cpuX/topology/core_id
40 Description: the CPU core ID of cpuX. Typic 40 Description: the CPU core ID of cpuX. Typically it is the hardware platform's
41 identifier (rather than the ke 41 identifier (rather than the kernel's). The actual value is
42 architecture and platform depe 42 architecture and platform dependent.
43 Values: integer 43 Values: integer
44 44
45 What: /sys/devices/system/cpu/cpuX/t <<
46 Description: the cluster ID of cpuX. Typic <<
47 identifier (rather than the ke <<
48 architecture and platform depe <<
49 Values: integer <<
50 <<
51 What: /sys/devices/system/cpu/cpuX/t 45 What: /sys/devices/system/cpu/cpuX/topology/book_id
52 Description: the book ID of cpuX. Typically 46 Description: the book ID of cpuX. Typically it is the hardware platform's
53 identifier (rather than the ke 47 identifier (rather than the kernel's). The actual value is
54 architecture and platform depe 48 architecture and platform dependent. it's only used on s390.
55 Values: integer 49 Values: integer
56 50
57 What: /sys/devices/system/cpu/cpuX/t 51 What: /sys/devices/system/cpu/cpuX/topology/drawer_id
58 Description: the drawer ID of cpuX. Typical 52 Description: the drawer ID of cpuX. Typically it is the hardware platform's
59 identifier (rather than the ke 53 identifier (rather than the kernel's). The actual value is
60 architecture and platform depe 54 architecture and platform dependent. it's only used on s390.
61 Values: integer 55 Values: integer
62 56
63 What: /sys/devices/system/cpu/cpuX/t 57 What: /sys/devices/system/cpu/cpuX/topology/core_cpus
64 Description: internal kernel map of CPUs wi 58 Description: internal kernel map of CPUs within the same core.
65 (deprecated name: "thread_sibl 59 (deprecated name: "thread_siblings")
66 Values: hexadecimal bitmask. 60 Values: hexadecimal bitmask.
67 61
68 What: /sys/devices/system/cpu/cpuX/t 62 What: /sys/devices/system/cpu/cpuX/topology/core_cpus_list
69 Description: human-readable list of CPUs wi 63 Description: human-readable list of CPUs within the same core.
70 The format is like 0-3, 8-11, 64 The format is like 0-3, 8-11, 14,17.
71 (deprecated name: "thread_sibl 65 (deprecated name: "thread_siblings_list").
72 Values: decimal list. 66 Values: decimal list.
73 67
74 What: /sys/devices/system/cpu/cpuX/t 68 What: /sys/devices/system/cpu/cpuX/topology/package_cpus
75 Description: internal kernel map of the CPU 69 Description: internal kernel map of the CPUs sharing the same physical_package_id.
76 (deprecated name: "core_siblin 70 (deprecated name: "core_siblings").
77 Values: hexadecimal bitmask. 71 Values: hexadecimal bitmask.
78 72
79 What: /sys/devices/system/cpu/cpuX/t 73 What: /sys/devices/system/cpu/cpuX/topology/package_cpus_list
80 Description: human-readable list of CPUs sh 74 Description: human-readable list of CPUs sharing the same physical_package_id.
81 The format is like 0-3, 8-11, 75 The format is like 0-3, 8-11, 14,17.
82 (deprecated name: "core_siblin 76 (deprecated name: "core_siblings_list")
83 Values: decimal list. 77 Values: decimal list.
84 78
85 What: /sys/devices/system/cpu/cpuX/t 79 What: /sys/devices/system/cpu/cpuX/topology/die_cpus
86 Description: internal kernel map of CPUs wi 80 Description: internal kernel map of CPUs within the same die.
87 Values: hexadecimal bitmask. 81 Values: hexadecimal bitmask.
88 82
89 What: /sys/devices/system/cpu/cpuX/t <<
90 Description: per-socket protected processor <<
91 Values: hexadecimal. <<
92 <<
93 What: /sys/devices/system/cpu/cpuX/t 83 What: /sys/devices/system/cpu/cpuX/topology/die_cpus_list
94 Description: human-readable list of CPUs wi 84 Description: human-readable list of CPUs within the same die.
95 The format is like 0-3, 8-11, <<
96 Values: decimal list. <<
97 <<
98 What: /sys/devices/system/cpu/cpuX/t <<
99 Description: internal kernel map of CPUs wi <<
100 Values: hexadecimal bitmask. <<
101 <<
102 What: /sys/devices/system/cpu/cpuX/t <<
103 Description: human-readable list of CPUs wi <<
104 The format is like 0-3, 8-11, 85 The format is like 0-3, 8-11, 14,17.
105 Values: decimal list. 86 Values: decimal list.
106 87
107 What: /sys/devices/system/cpu/cpuX/t 88 What: /sys/devices/system/cpu/cpuX/topology/book_siblings
108 Description: internal kernel map of cpuX's 89 Description: internal kernel map of cpuX's hardware threads within the same
109 book_id. it's only used on s39 90 book_id. it's only used on s390.
110 Values: hexadecimal bitmask. 91 Values: hexadecimal bitmask.
111 92
112 What: /sys/devices/system/cpu/cpuX/t 93 What: /sys/devices/system/cpu/cpuX/topology/book_siblings_list
113 Description: human-readable list of cpuX's 94 Description: human-readable list of cpuX's hardware threads within the same
114 book_id. 95 book_id.
115 The format is like 0-3, 8-11, 96 The format is like 0-3, 8-11, 14,17. it's only used on s390.
116 Values: decimal list. 97 Values: decimal list.
117 98
118 What: /sys/devices/system/cpu/cpuX/t 99 What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings
119 Description: internal kernel map of cpuX's 100 Description: internal kernel map of cpuX's hardware threads within the same
120 drawer_id. it's only used on s 101 drawer_id. it's only used on s390.
121 Values: hexadecimal bitmask. 102 Values: hexadecimal bitmask.
122 103
123 What: /sys/devices/system/cpu/cpuX/t 104 What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings_list
124 Description: human-readable list of cpuX's 105 Description: human-readable list of cpuX's hardware threads within the same
125 drawer_id. 106 drawer_id.
126 The format is like 0-3, 8-11, 107 The format is like 0-3, 8-11, 14,17. it's only used on s390.
127 Values: decimal list. 108 Values: decimal list.
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