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# cpu pinning separators and constants

CPU_PINNING_SEP = ":"

CPU_PINNING_ALL = "all"

# internal representation of "all"

CPU_PINNING_ALL_VAL = -1

# one "all" entry in a CPU list means CPU pinning is off

CPU_PINNING_OFF = [CPU_PINNING_ALL_VAL]

# A Xen-specific implementation detail - there is no way to actually say

# "use any cpu for pinning" in a Xen configuration file, as opposed to the

# command line, where you can say "xm vcpu-pin <domain> <vcpu> all".

# The workaround used in Xen is "0-63" (see source code function

# xm_vcpu_pin in <xen-source>/tools/python/xen/xm/main.py).

# To support future changes, the following constant is treated as a

# blackbox string that simply means use-any-cpu-for-pinning-under-xen.

CPU_PINNING_ALL_XEN = "0-63"

# A KVM-specific implementation detail - the following value is used

# to set CPU affinity to all processors (#0 through #31), per taskset

# man page.

# FIXME: This only works for machines with up to 32 CPU cores

CPU_PINNING_ALL_KVM = 0xFFFFFFFF

# Wipe