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1What: /sys/devices/system/cpu/dscr_default2Date: 13-May-20143KernelVersion: v3.15.04Contact:5Description: Writes are equivalent to writing to6 /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 set9 all per-CPU defaults at the same time.10Values: 64 bit unsigned integer (bit field)11 12What: /sys/devices/system/cpu/cpu[0-9]+/dscr13Date: 13-May-201414KernelVersion: v3.15.015Contact:16Description: Default value for the Data Stream Control Register (DSCR) on17 a CPU.18 This default value is used when the kernel is executing and19 for any process that has not set the DSCR itself.20 If a process ever sets the DSCR (via direct access to the21 SPR) that value will be persisted for that process and used22 on any CPU where it executes (overriding the value described23 here).24 If set by a process it will be inherited by child processes.25Values: 64 bit unsigned integer (bit field)26 27What: /sys/devices/system/cpu/cpuX/topology/physical_package_id28Description: physical package id of cpuX. Typically corresponds to a physical29 socket number, but the actual value is architecture and platform30 dependent.31Values: integer32 33What: /sys/devices/system/cpu/cpuX/topology/die_id34Description: the CPU die ID of cpuX. Typically it is the hardware platform's35 identifier (rather than the kernel's). The actual value is36 architecture and platform dependent.37Values: integer38 39What: /sys/devices/system/cpu/cpuX/topology/core_id40Description: the CPU core ID of cpuX. Typically it is the hardware platform's41 identifier (rather than the kernel's). The actual value is42 architecture and platform dependent.43Values: integer44 45What: /sys/devices/system/cpu/cpuX/topology/cluster_id46Description: the cluster ID of cpuX. Typically it is the hardware platform's47 identifier (rather than the kernel's). The actual value is48 architecture and platform dependent.49Values: integer50 51What: /sys/devices/system/cpu/cpuX/topology/book_id52Description: the book ID of cpuX. Typically it is the hardware platform's53 identifier (rather than the kernel's). The actual value is54 architecture and platform dependent. it's only used on s390.55Values: integer56 57What: /sys/devices/system/cpu/cpuX/topology/drawer_id58Description: the drawer ID of cpuX. Typically it is the hardware platform's59 identifier (rather than the kernel's). The actual value is60 architecture and platform dependent. it's only used on s390.61Values: integer62 63What: /sys/devices/system/cpu/cpuX/topology/core_cpus64Description: internal kernel map of CPUs within the same core.65 (deprecated name: "thread_siblings")66Values: hexadecimal bitmask.67 68What: /sys/devices/system/cpu/cpuX/topology/core_cpus_list69Description: human-readable list of CPUs within the same core.70 The format is like 0-3, 8-11, 14,17.71 (deprecated name: "thread_siblings_list").72Values: decimal list.73 74What: /sys/devices/system/cpu/cpuX/topology/package_cpus75Description: internal kernel map of the CPUs sharing the same physical_package_id.76 (deprecated name: "core_siblings").77Values: hexadecimal bitmask.78 79What: /sys/devices/system/cpu/cpuX/topology/package_cpus_list80Description: human-readable list of CPUs sharing the same physical_package_id.81 The format is like 0-3, 8-11, 14,17.82 (deprecated name: "core_siblings_list")83Values: decimal list.84 85What: /sys/devices/system/cpu/cpuX/topology/die_cpus86Description: internal kernel map of CPUs within the same die.87Values: hexadecimal bitmask.88 89What: /sys/devices/system/cpu/cpuX/topology/ppin90Description: per-socket protected processor inventory number91Values: hexadecimal.92 93What: /sys/devices/system/cpu/cpuX/topology/die_cpus_list94Description: human-readable list of CPUs within the same die.95 The format is like 0-3, 8-11, 14,17.96Values: decimal list.97 98What: /sys/devices/system/cpu/cpuX/topology/cluster_cpus99Description: internal kernel map of CPUs within the same cluster.100Values: hexadecimal bitmask.101 102What: /sys/devices/system/cpu/cpuX/topology/cluster_cpus_list103Description: human-readable list of CPUs within the same cluster.104 The format is like 0-3, 8-11, 14,17.105Values: decimal list.106 107What: /sys/devices/system/cpu/cpuX/topology/book_siblings108Description: internal kernel map of cpuX's hardware threads within the same109 book_id. it's only used on s390.110Values: hexadecimal bitmask.111 112What: /sys/devices/system/cpu/cpuX/topology/book_siblings_list113Description: human-readable list of cpuX's hardware threads within the same114 book_id.115 The format is like 0-3, 8-11, 14,17. it's only used on s390.116Values: decimal list.117 118What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings119Description: internal kernel map of cpuX's hardware threads within the same120 drawer_id. it's only used on s390.121Values: hexadecimal bitmask.122 123What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings_list124Description: human-readable list of cpuX's hardware threads within the same125 drawer_id.126 The format is like 0-3, 8-11, 14,17. it's only used on s390.127Values: decimal list.128