hwlocality_linux_libnuma_biHardware Localithwlocality_linux_libnuma_bitmask(3)NAME
hwlocality_linux_libnuma_bitmask - Interoperability with Linux libnuma
bitmask
Functions
static struct bitmask * hwloc_cpuset_to_linux_libnuma_bitmask
(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset)
static struct bitmask * hwloc_nodeset_to_linux_libnuma_bitmask
(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset)
static int hwloc_cpuset_from_linux_libnuma_bitmask (hwloc_topology_t
topology, hwloc_cpuset_t cpuset, const struct bitmask *bitmask)
static int hwloc_nodeset_from_linux_libnuma_bitmask (hwloc_topology_t
topology, hwloc_nodeset_t nodeset, const struct bitmask *bitmask)
Detailed Description
This interface helps converting between Linux libnuma bitmasks and
hwloc cpusets and nodesets.
It also offers a consistent behavior on non-NUMA machines or non-NUMA-
aware kernels by assuming that the machines have a single NUMA node.
Note:
Topology topology must match the current machine.
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.
Function Documentation
static int hwloc_cpuset_from_linux_libnuma_bitmask (hwloc_topology_t
topology, hwloc_cpuset_t cpuset, const struct bitmask * bitmask)
[inline], [static]
Convert libnuma bitmask bitmask into hwloc CPU set cpuset. This
function may be used after calling many numa_ functions that use a
struct bitmask as an output parameter.
static struct bitmask * hwloc_cpuset_to_linux_libnuma_bitmask
(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset) [static]
Convert hwloc CPU set cpuset into the returned libnuma bitmask. The
returned bitmask should later be freed with numa_bitmask_free.
This function may be used before calling many numa_ functions that use
a struct bitmask as an input parameter.
Returns:
newly allocated struct bitmask.
static int hwloc_nodeset_from_linux_libnuma_bitmask (hwloc_topology_t
topology, hwloc_nodeset_t nodeset, const struct bitmask * bitmask)
[inline], [static]
Convert libnuma bitmask bitmask into hwloc NUMA node set nodeset. This
function may be used after calling many numa_ functions that use a
struct bitmask as an output parameter.
static struct bitmask * hwloc_nodeset_to_linux_libnuma_bitmask
(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset) [static]
Convert hwloc NUMA node set nodeset into the returned libnuma bitmask.
The returned bitmask should later be freed with numa_bitmask_free.
This function may be used before calling many numa_ functions that use
a struct bitmask as an input parameter.
Returns:
newly allocated struct bitmask.
Author
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the source code.
Version 1.11.1 Thu Oct 15 hwlocality_linux_libnuma_bitmask(3)
