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- 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/ppin
- Description: per-socket protected processor inventory number
- Values: hexadecimal.
- 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.
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