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# openfabrics-verbs.h

    00001 /*
    00002  * Copyright © 2009 CNRS, INRIA, Université Bordeaux 1
    00003  * Copyright © 2009 Cisco Systems, Inc.  All rights reserved.
    00004  * See COPYING in top-level directory.
    00005  */
    00006
    00017 #ifndef HWLOC_OPENFABRICS_VERBS_H
    00018 #define HWLOC_OPENFABRICS_VERBS_H
    00019
    00020 #include <hwloc.h>
    00021 #include <hwloc/config.h>
    00022 #include <hwloc/linux.h>
    00023
    00024 #include <infiniband/verbs.h>
    00025
    00038 static __hwloc_inline int
    00039 hwloc_ibv_get_device_cpuset(hwloc_topology_t topology __hwloc_attribute_unused,
    00040                             struct ibv_device *ibdev, hwloc_cpuset_t set)
    00041 {
    00042 #ifdef HWLOC_LINUX_SYS
    00043   /* If we're on Linux, use the verbs-provided sysfs mechanism to
    00044      get the local cpus */
    00045 #define HWLOC_OPENFABRICS_VERBS_SYSFS_PATH_MAX 128
    00046   char path[HWLOC_OPENFABRICS_VERBS_SYSFS_PATH_MAX];
    00047   FILE *sysfile = NULL;
    00048
    00049   sprintf(path, "/sys/class/infiniband/%s/device/local_cpus",
    00050           ibv_get_device_name(ibdev));
    00051   sysfile = fopen(path, "r");
    00052   if (!sysfile)
    00053     return -1;
    00054
    00055   hwloc_linux_parse_cpumap_file(sysfile, set);
    00056
    00057   fclose(sysfile);
    00058 #else
    00059   /* Non-Linux systems simply get a full cpuset */
    00060   hwloc_cpuset_copy(set, hwloc_topology_get_complete_cpuset(topology));
    00061 #endif
    00062   return 0;
    00063 }
    00064
    00067 #endif /* HWLOC_OPENFABRICS_VERBS_H */