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static int | hwloc_cpuset_to_linux_libnuma_ulongs (hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, unsigned long *mask, unsigned long *maxnode) |
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static int | hwloc_nodeset_to_linux_libnuma_ulongs (hwloc_topology_t topology, hwloc_const_nodeset_t nodeset, unsigned long *mask, unsigned long *maxnode) |
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static int | hwloc_cpuset_from_linux_libnuma_ulongs (hwloc_topology_t topology, hwloc_cpuset_t cpuset, const unsigned long *mask, unsigned long maxnode) |
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static int | hwloc_nodeset_from_linux_libnuma_ulongs (hwloc_topology_t topology, hwloc_nodeset_t nodeset, const unsigned long *mask, unsigned long maxnode) |
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This interface helps converting between Linux libnuma unsigned long masks and hwloc cpusets and nodesets.
- Note
- Topology
topology must match the current machine.
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The behavior of libnuma is undefined if the kernel is not NUMA-aware. (when CONFIG_NUMA is not set in the kernel configuration). This helper and libnuma may thus not be strictly compatible in this case, which may be detected by checking whether numa_available() returns -1.
◆ hwloc_cpuset_from_linux_libnuma_ulongs()
static int hwloc_cpuset_from_linux_libnuma_ulongs |
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hwloc_topology_t |
topology, |
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hwloc_cpuset_t |
cpuset, |
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const unsigned long * |
mask, |
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unsigned long |
maxnode |
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inlinestatic |
Convert the array of unsigned long mask into hwloc CPU set.
mask is a array of unsigned long that will be read. maxnode contains the maximal node number that may be read in mask .
This function may be used after calling get_mempolicy or any other function that takes an array of unsigned long as output parameter (and possibly a maximal node number as input parameter).
- Returns
- 0 on success.
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-1 on error, for instance if failing an internal reallocation.
◆ hwloc_cpuset_to_linux_libnuma_ulongs()
Convert hwloc CPU set cpuset into the array of unsigned long mask .
mask is the array of unsigned long that will be filled. maxnode contains the maximal node number that may be stored in mask . maxnode will be set to the maximal node number that was found, plus one.
This function may be used before calling set_mempolicy, mbind, migrate_pages or any other function that takes an array of unsigned long and a maximal node number as input parameter.
- Returns
- 0.
◆ hwloc_nodeset_from_linux_libnuma_ulongs()
static int hwloc_nodeset_from_linux_libnuma_ulongs |
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hwloc_topology_t |
topology, |
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hwloc_nodeset_t |
nodeset, |
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const unsigned long * |
mask, |
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unsigned long |
maxnode |
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inlinestatic |
Convert the array of unsigned long mask into hwloc NUMA node set.
mask is a array of unsigned long that will be read. maxnode contains the maximal node number that may be read in mask .
This function may be used after calling get_mempolicy or any other function that takes an array of unsigned long as output parameter (and possibly a maximal node number as input parameter).
- Returns
- 0 on success.
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-1 with errno set to
ENOMEM if some internal reallocation failed.
◆ hwloc_nodeset_to_linux_libnuma_ulongs()
Convert hwloc NUMA node set nodeset into the array of unsigned long mask .
mask is the array of unsigned long that will be filled. maxnode contains the maximal node number that may be stored in mask . maxnode will be set to the maximal node number that was found, plus one.
This function may be used before calling set_mempolicy, mbind, migrate_pages or any other function that takes an array of unsigned long and a maximal node number as input parameter.
- Returns
- 0.
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