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hwlocality_linux(3) Library Functions Manual hwlocality_linux(3) NAME hwlocality_linux - Linux-specific helpers SYNOPSIS Functions int hwloc_linux_set_tid_cpubind (hwloc_topology_t topology, pid_t tid, hwloc_const_cpuset_t set) int hwloc_linux_get_tid_cpubind (hwloc_topology_t topology, pid_t tid, hwloc_cpuset_t set) int hwloc_linux_get_tid_last_cpu_location (hwloc_topology_t topology, pid_t tid, hwloc_bitmap_t set) int hwloc_linux_read_path_as_cpumask (const char *path, hwloc_bitmap_t set) Detailed Description This includes helpers for manipulating Linux kernel cpumap files, and hwloc equivalents of the Linux sched_setaffinity and sched_getaffinity system calls. Function Documentation int hwloc_linux_get_tid_cpubind (hwloc_topology_t topology, pid_t tid, hwloc_cpuset_t set) Get the current binding of thread tid. The CPU-set set (previously allo- cated by the caller) is filled with the list of PUs which the thread was last bound to. The behavior is exactly the same as the Linux sched_getaffinity system call, but uses a hwloc cpuset. Returns 0 on success, -1 on error. Note This is equivalent to calling hwloc_get_proc_cpubind() with HWLOC_CPU- BIND_THREAD as flags. int hwloc_linux_get_tid_last_cpu_location (hwloc_topology_t topology, pid_t tid, hwloc_bitmap_t set) Get the last physical CPU where thread tid ran. The CPU-set set (previously allocated by the caller) is filled with the PU which the thread last ran on. Returns 0 on success, -1 on error. Note This is equivalent to calling hwloc_get_proc_last_cpu_location() with HWLOC_CPUBIND_THREAD as flags. int hwloc_linux_read_path_as_cpumask (const char * path, hwloc_bitmap_t set) Convert a linux kernel cpumask file path into a hwloc bitmap set. Might be used when reading CPU set from sysfs attributes such as topology and caches for processors, or local_cpus for devices. Returns 0 on success, -1 on error. Note This function ignores the HWLOC_FSROOT environment variable. int hwloc_linux_set_tid_cpubind (hwloc_topology_t topology, pid_t tid, hwloc_const_cpuset_t set) Bind a thread tid on cpus given in cpuset set. The behavior is exactly the same as the Linux sched_setaffinity system call, but uses a hwloc cpuset. Returns 0 on success, -1 on error. Note This is equivalent to calling hwloc_set_proc_cpubind() with HWLOC_CPU- BIND_THREAD as flags. Author Generated automatically by Doxygen for Hardware Locality (hwloc) from the source code. Hardware Locality (hwloc) Version 2.12.1 hwlocality_linux(3)
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