| What: /sys/devices/system/cpu/dscr_default |
| Date: 13-May-2014 |
| KernelVersion: v3.15.0 |
| Contact: |
| Description: Writes are equivalent to writing to |
| /sys/devices/system/cpu/cpuN/dscr on all CPUs. |
| Reads return the last written value or 0. |
| This value is not a global default: it is a way to set |
| all per-CPU defaults at the same time. |
| Values: 64 bit unsigned integer (bit field) |
| |
| What: /sys/devices/system/cpu/cpu[0-9]+/dscr |
| Date: 13-May-2014 |
| KernelVersion: v3.15.0 |
| Contact: |
| Description: Default value for the Data Stream Control Register (DSCR) on |
| a CPU. |
| This default value is used when the kernel is executing and |
| for any process that has not set the DSCR itself. |
| If a process ever sets the DSCR (via direct access to the |
| SPR) that value will be persisted for that process and used |
| on any CPU where it executes (overriding the value described |
| here). |
| If set by a process it will be inherited by child processes. |
| Values: 64 bit unsigned integer (bit field) |
| |
| What: /sys/devices/system/cpu/cpuX/topology/physical_package_id |
| Description: physical package id of cpuX. Typically corresponds to a physical |
| socket number, but the actual value is architecture and platform |
| dependent. |
| Values: integer |
| |
| What: /sys/devices/system/cpu/cpuX/topology/die_id |
| Description: the CPU die ID of cpuX. Typically it is the hardware platform's |
| identifier (rather than the kernel's). The actual value is |
| architecture and platform dependent. |
| Values: integer |
| |
| What: /sys/devices/system/cpu/cpuX/topology/core_id |
| Description: the CPU core ID of cpuX. Typically it is the hardware platform's |
| identifier (rather than the kernel's). The actual value is |
| architecture and platform dependent. |
| Values: integer |
| |
| What: /sys/devices/system/cpu/cpuX/topology/cluster_id |
| Description: the cluster ID of cpuX. Typically it is the hardware platform's |
| identifier (rather than the kernel's). The actual value is |
| architecture and platform dependent. |
| Values: integer |
| |
| What: /sys/devices/system/cpu/cpuX/topology/book_id |
| Description: the book ID of cpuX. Typically it is the hardware platform's |
| identifier (rather than the kernel's). The actual value is |
| architecture and platform dependent. it's only used on s390. |
| Values: integer |
| |
| What: /sys/devices/system/cpu/cpuX/topology/drawer_id |
| Description: the drawer ID of cpuX. Typically it is the hardware platform's |
| identifier (rather than the kernel's). The actual value is |
| architecture and platform dependent. it's only used on s390. |
| Values: integer |
| |
| What: /sys/devices/system/cpu/cpuX/topology/core_cpus |
| Description: internal kernel map of CPUs within the same core. |
| (deprecated name: "thread_siblings") |
| Values: hexadecimal bitmask. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/core_cpus_list |
| Description: human-readable list of CPUs within the same core. |
| The format is like 0-3, 8-11, 14,17. |
| (deprecated name: "thread_siblings_list"). |
| Values: decimal list. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/package_cpus |
| Description: internal kernel map of the CPUs sharing the same physical_package_id. |
| (deprecated name: "core_siblings"). |
| Values: hexadecimal bitmask. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/package_cpus_list |
| Description: human-readable list of CPUs sharing the same physical_package_id. |
| The format is like 0-3, 8-11, 14,17. |
| (deprecated name: "core_siblings_list") |
| Values: decimal list. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/die_cpus |
| Description: internal kernel map of CPUs within the same die. |
| Values: hexadecimal bitmask. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/die_cpus_list |
| Description: human-readable list of CPUs within the same die. |
| The format is like 0-3, 8-11, 14,17. |
| Values: decimal list. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/cluster_cpus |
| Description: internal kernel map of CPUs within the same cluster. |
| Values: hexadecimal bitmask. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/cluster_cpus_list |
| Description: human-readable list of CPUs within the same cluster. |
| The format is like 0-3, 8-11, 14,17. |
| Values: decimal list. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/book_siblings |
| Description: internal kernel map of cpuX's hardware threads within the same |
| book_id. it's only used on s390. |
| Values: hexadecimal bitmask. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/book_siblings_list |
| Description: human-readable list of cpuX's hardware threads within the same |
| book_id. |
| The format is like 0-3, 8-11, 14,17. it's only used on s390. |
| Values: decimal list. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings |
| Description: internal kernel map of cpuX's hardware threads within the same |
| drawer_id. it's only used on s390. |
| Values: hexadecimal bitmask. |
| |
| What: /sys/devices/system/cpu/cpuX/topology/drawer_siblings_list |
| Description: human-readable list of cpuX's hardware threads within the same |
| drawer_id. |
| The format is like 0-3, 8-11, 14,17. it's only used on s390. |
| Values: decimal list. |
