1 What: /sys/devices/system/cpu/dscr_default
5 Description: Writes are equivalent to writing to
6 /sys/devices/system/cpu/cpuN/dscr on all CPUs.
7 Reads return the last written value or 0.
8 This value is not a global default: it is a way to set
9 all per-CPU defaults at the same time.
10 Values: 64 bit unsigned integer (bit field)
12 What: /sys/devices/system/cpu/cpu[0-9]+/dscr
14 KernelVersion: v3.15.0
16 Description: Default value for the Data Stream Control Register (DSCR) on
18 This default value is used when the kernel is executing and
19 for any process that has not set the DSCR itself.
20 If a process ever sets the DSCR (via direct access to the
21 SPR) that value will be persisted for that process and used
22 on any CPU where it executes (overriding the value described
24 If set by a process it will be inherited by child processes.
25 Values: 64 bit unsigned integer (bit field)
27 What: /sys/devices/system/cpu/cpuX/topology/physical_package_id
28 Description: physical package id of cpuX. Typically corresponds to a physical
29 socket number, but the actual value is architecture and platform
33 What: /sys/devices/system/cpu/cpuX/topology/die_id
34 Description: the CPU die ID of cpuX. Typically it is the hardware platform's
35 identifier (rather than the kernel's). The actual value is
36 architecture and platform dependent.
39 What: /sys/devices/system/cpu/cpuX/topology/core_id
40 Description: the CPU core ID of cpuX. Typically it is the hardware platform's
41 identifier (rather than the kernel's). The actual value is
42 architecture and platform dependent.
45 What: /sys/devices/system/cpu/cpuX/topology/book_id
46 Description: the book ID of cpuX. Typically it is the hardware platform's
47 identifier (rather than the kernel's). The actual value is
48 architecture and platform dependent. it's only used on s390.
51 What: /sys/devices/system/cpu/cpuX/topology/drawer_id
52 Description: the drawer ID of cpuX. Typically it is the hardware platform's
53 identifier (rather than the kernel's). The actual value is
54 architecture and platform dependent. it's only used on s390.
57 What: /sys/devices/system/cpu/cpuX/topology/core_cpus
58 Description: internal kernel map of CPUs within the same core.
59 (deprecated name: "thread_siblings")
60 Values: hexadecimal bitmask.
62 What: /sys/devices/system/cpu/cpuX/topology/core_cpus_list
63 Description: human-readable list of CPUs within the same core.
64 The format is like 0-3, 8-11, 14,17.
65 (deprecated name: "thread_siblings_list").
68 What: /sys/devices/system/cpu/cpuX/topology/package_cpus
69 Description: internal kernel map of the CPUs sharing the same physical_package_id.
70 (deprecated name: "core_siblings").
71 Values: hexadecimal bitmask.
73 What: /sys/devices/system/cpu/cpuX/topology/package_cpus_list
74 Description: human-readable list of CPUs sharing the same physical_package_id.
75 The format is like 0-3, 8-11, 14,17.
76 (deprecated name: "core_siblings_list")
79 What: /sys/devices/system/cpu/cpuX/topology/die_cpus
80 Description: internal kernel map of CPUs within the same die.
81 Values: hexadecimal bitmask.
83 What: /sys/devices/system/cpu/cpuX/topology/die_cpus_list
84 Description: human-readable list of CPUs within the same die.
85 The format is like 0-3, 8-11, 14,17.
88 What: /sys/devices/system/cpu/cpuX/topology/book_siblings
89 Description: internal kernel map of cpuX's hardware threads within the same
90 book_id. it's only used on s390.
91 Values: hexadecimal bitmask.
93 What: /sys/devices/system/cpu/cpuX/topology/book_siblings_list
94 Description: human-readable list of cpuX's hardware threads within the same
96 The format is like 0-3, 8-11, 14,17. it's only used on s390.
99 What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings
100 Description: internal kernel map of cpuX's hardware threads within the same
101 drawer_id. it's only used on s390.
102 Values: hexadecimal bitmask.
104 What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings_list
105 Description: human-readable list of cpuX's hardware threads within the same
107 The format is like 0-3, 8-11, 14,17. it's only used on s390.
108 Values: decimal list.