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/*
* Copyright (c) 2011-2017 Cisco Systems, Inc. All rights reserved
* Copyright (c) 2016 Intel, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "opal/constants.h"
#include "opal/mca/hwloc/hwloc-internal.h"
#include "opal/mca/hwloc/base/base.h"
/*
* Don't use show_help() here (or print any error message at all).
* Let the upper layer output a relevant message, because doing so may
* be complicated (e.g., this might be called from the ORTE ODLS,
* which has to do some extra steps to get error messages to be
* displayed).
*/
int opal_hwloc_base_set_process_membind_policy(void)
{
int rc = 0, flags;
hwloc_membind_policy_t policy;
hwloc_cpuset_t cpuset;
/* Make sure opal_hwloc_topology has been set by the time we've
been called */
if (OPAL_SUCCESS != opal_hwloc_base_get_topology()) {
return OPAL_ERR_BAD_PARAM;
}
/* Set the default memory allocation policy according to MCA
param */
switch (opal_hwloc_base_map) {
case OPAL_HWLOC_BASE_MAP_LOCAL_ONLY:
policy = HWLOC_MEMBIND_BIND;
flags = HWLOC_MEMBIND_STRICT;
break;
case OPAL_HWLOC_BASE_MAP_NONE:
default:
policy = HWLOC_MEMBIND_DEFAULT;
flags = 0;
break;
}
cpuset = hwloc_bitmap_alloc();
if (NULL == cpuset) {
rc = OPAL_ERR_OUT_OF_RESOURCE;
} else {
int e;
hwloc_get_cpubind(opal_hwloc_topology, cpuset, 0);
rc = hwloc_set_membind(opal_hwloc_topology,
cpuset, policy, flags);
e = errno;
hwloc_bitmap_free(cpuset);
/* See if hwloc was able to do it. If hwloc failed due to
ENOSYS, but the base_map == NONE, then it's not really an
error. */
if (0 != rc && ENOSYS == e &&
OPAL_HWLOC_BASE_MAP_NONE == opal_hwloc_base_map) {
rc = 0;
}
}
return (0 == rc) ? OPAL_SUCCESS : OPAL_ERROR;
}
int opal_hwloc_base_memory_set(opal_hwloc_base_memory_segment_t *segments,
size_t num_segments)
{
int rc = OPAL_SUCCESS;
char *msg = NULL;
size_t i;
hwloc_cpuset_t cpuset = NULL;
/* bozo check */
if (OPAL_SUCCESS != opal_hwloc_base_get_topology()) {
msg = "hwloc_set_area_membind() failure - topology not available";
return opal_hwloc_base_report_bind_failure(__FILE__, __LINE__,
msg, rc);
}
/* This module won't be used unless the process is already
processor-bound. So find out where we're processor bound, and
bind our memory there, too. */
cpuset = hwloc_bitmap_alloc();
if (NULL == cpuset) {
rc = OPAL_ERR_OUT_OF_RESOURCE;
msg = "hwloc_bitmap_alloc() failure";
goto out;
}
hwloc_get_cpubind(opal_hwloc_topology, cpuset, 0);
for (i = 0; i < num_segments; ++i) {
if (0 != hwloc_set_area_membind(opal_hwloc_topology,
segments[i].mbs_start_addr,
segments[i].mbs_len, cpuset,
HWLOC_MEMBIND_BIND,
HWLOC_MEMBIND_STRICT)) {
rc = OPAL_ERROR;
msg = "hwloc_set_area_membind() failure";
goto out;
}
}
out:
if (NULL != cpuset) {
hwloc_bitmap_free(cpuset);
}
if (OPAL_SUCCESS != rc) {
return opal_hwloc_base_report_bind_failure(__FILE__, __LINE__, msg, rc);
}
return OPAL_SUCCESS;
}
int opal_hwloc_base_node_name_to_id(char *node_name, int *id)
{
/* GLB: fix me */
*id = atoi(node_name + 3);
return OPAL_SUCCESS;
}
int opal_hwloc_base_membind(opal_hwloc_base_memory_segment_t *segs,
size_t count, int node_id)
{
size_t i;
int rc = OPAL_SUCCESS;
char *msg = NULL;
hwloc_cpuset_t cpuset = NULL;
/* bozo check */
if (OPAL_SUCCESS != opal_hwloc_base_get_topology()) {
msg = "hwloc_set_area_membind() failure - topology not available";
return opal_hwloc_base_report_bind_failure(__FILE__, __LINE__,
msg, rc);
}
cpuset = hwloc_bitmap_alloc();
if (NULL == cpuset) {
rc = OPAL_ERR_OUT_OF_RESOURCE;
msg = "hwloc_bitmap_alloc() failure";
goto out;
}
hwloc_bitmap_set(cpuset, node_id);
for(i = 0; i < count; i++) {
if (0 != hwloc_set_area_membind(opal_hwloc_topology,
segs[i].mbs_start_addr,
segs[i].mbs_len, cpuset,
HWLOC_MEMBIND_BIND,
HWLOC_MEMBIND_STRICT)) {
rc = OPAL_ERROR;
msg = "hwloc_set_area_membind() failure";
goto out;
}
}
out:
if (NULL != cpuset) {
hwloc_bitmap_free(cpuset);
}
if (OPAL_SUCCESS != rc) {
return opal_hwloc_base_report_bind_failure(__FILE__, __LINE__, msg, rc);
}
return OPAL_SUCCESS;
}
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