mirror of https://github.com/xzeldon/htop.git
82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/*
|
|
* Copyright © 2009 CNRS
|
|
* Copyright © 2009-2010 INRIA. All rights reserved.
|
|
* Copyright © 2009-2010 Université Bordeaux 1
|
|
* Copyright © 2009-2011 Cisco Systems, Inc. All rights reserved.
|
|
* See COPYING in top-level directory.
|
|
*/
|
|
|
|
/** \file
|
|
* \brief Macros to help interaction between hwloc and OpenFabrics
|
|
* verbs.
|
|
*
|
|
* Applications that use both hwloc and OpenFabrics verbs may want to
|
|
* include this file so as to get topology information for OpenFabrics
|
|
* hardware.
|
|
*
|
|
*/
|
|
|
|
#ifndef HWLOC_OPENFABRICS_VERBS_H
|
|
#define HWLOC_OPENFABRICS_VERBS_H
|
|
|
|
#include <hwloc.h>
|
|
#include <hwloc/autogen/config.h>
|
|
#include <hwloc/linux.h>
|
|
|
|
#include <infiniband/verbs.h>
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/** \defgroup hwlocality_openfabrics OpenFabrics-Specific Functions
|
|
* @{
|
|
*/
|
|
|
|
/** \brief Get the CPU set of logical processors that are physically
|
|
* close to device \p ibdev.
|
|
*
|
|
* For the given OpenFabrics device \p ibdev, read the corresponding
|
|
* kernel-provided cpumap file and return the corresponding CPU set.
|
|
* This function is currently only implemented in a meaningful way for
|
|
* Linux; other systems will simply get a full cpuset.
|
|
*/
|
|
static __hwloc_inline int
|
|
hwloc_ibv_get_device_cpuset(hwloc_topology_t topology __hwloc_attribute_unused,
|
|
struct ibv_device *ibdev, hwloc_cpuset_t set)
|
|
{
|
|
#ifdef HWLOC_LINUX_SYS
|
|
/* If we're on Linux, use the verbs-provided sysfs mechanism to
|
|
get the local cpus */
|
|
#define HWLOC_OPENFABRICS_VERBS_SYSFS_PATH_MAX 128
|
|
char path[HWLOC_OPENFABRICS_VERBS_SYSFS_PATH_MAX];
|
|
FILE *sysfile = NULL;
|
|
|
|
sprintf(path, "/sys/class/infiniband/%s/device/local_cpus",
|
|
ibv_get_device_name(ibdev));
|
|
sysfile = fopen(path, "r");
|
|
if (!sysfile)
|
|
return -1;
|
|
|
|
hwloc_linux_parse_cpumap_file(sysfile, set);
|
|
|
|
fclose(sysfile);
|
|
#else
|
|
/* Non-Linux systems simply get a full cpuset */
|
|
hwloc_bitmap_copy(set, hwloc_topology_get_complete_cpuset(topology));
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/** @} */
|
|
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
|
|
#endif /* HWLOC_OPENFABRICS_VERBS_H */
|