openfabrics-verbs.h

    00001 /*
    00002  * Copyright © 2009 CNRS
    00003  * Copyright © 2009-2010 INRIA.  All rights reserved.
    00004  * Copyright © 2009-2010 Université Bordeaux 1
    00005  * Copyright © 2009-2011 Cisco Systems, Inc.  All rights reserved.
    00006  * See COPYING in top-level directory.
    00007  */
    00008
    00019 #ifndef HWLOC_OPENFABRICS_VERBS_H
    00020 #define HWLOC_OPENFABRICS_VERBS_H
    00021
    00022 #include <hwloc.h>
    00023 #include <hwloc/autogen/config.h>
    00024 #include <hwloc/linux.h>
    00025
    00026 #include <infiniband/verbs.h>
    00027
    00028
    00029 #ifdef __cplusplus
    00030 extern "C" {
    00031 #endif
    00032
    00033
    00046 static inline int
    00047 hwloc_ibv_get_device_cpuset(hwloc_topology_t topology ,
    00048                             struct ibv_device *ibdev, hwloc_cpuset_t set)
    00049 {
    00050 #ifdef HWLOC_LINUX_SYS
    00051   /* If we're on Linux, use the verbs-provided sysfs mechanism to
    00052      get the local cpus */
    00053 #define HWLOC_OPENFABRICS_VERBS_SYSFS_PATH_MAX 128
    00054   char path[HWLOC_OPENFABRICS_VERBS_SYSFS_PATH_MAX];
    00055   FILE *sysfile = NULL;
    00056
    00057   sprintf(path, "/sys/class/infiniband/%s/device/local_cpus",
    00058           ibv_get_device_name(ibdev));
    00059   sysfile = fopen(path, "r");
    00060   if (!sysfile)
    00061     return -1;
    00062
    00063   hwloc_linux_parse_cpumap_file(sysfile, set);
    00064
    00065   fclose(sysfile);
    00066 #else
    00067   /* Non-Linux systems simply get a full cpuset */
    00068   hwloc_bitmap_copy(set, hwloc_topology_get_complete_cpuset(topology));
    00069 #endif
    00070   return 0;
    00071 }
    00072
    00076 #ifdef __cplusplus
    00077 } /* extern "C" */
    00078 #endif
    00079
    00080
    00081 #endif /* HWLOC_OPENFABRICS_VERBS_H */