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/*
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2011 Cisco Systems, Inc. All rights reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
/* This component will only be compiled on Hwloc, where we are
guaranteed to have <unistd.h> and friends */
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "opal/constants.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/mca/maffinity/maffinity.h"
#include "opal/mca/maffinity/base/base.h"
#include "opal/mca/hwloc/base/base.h"
#include "maffinity_hwloc.h"
#include "opal/mca/hwloc/hwloc.h"
/*
* Local functions
*/
static int hwloc_module_init(void);
static int hwloc_module_set(opal_maffinity_base_segment_t *segments,
size_t num_segments);
static int hwloc_module_node_name_to_id(char *, int *);
static int hwloc_module_bind(opal_maffinity_base_segment_t *, size_t, int);
/*
* Hwloc maffinity module
*/
static const opal_maffinity_base_module_1_0_0_t local_module = {
/* Initialization function */
hwloc_module_init,
/* Module function pointers */
hwloc_module_set,
hwloc_module_node_name_to_id,
hwloc_module_bind
};
int opal_maffinity_hwloc_component_query(mca_base_module_t **module,
int *priority)
{
if (NULL == opal_hwloc_topology) {
return OPAL_ERROR;
}
*priority = mca_maffinity_hwloc_component.priority;
*module = (mca_base_module_t *) &local_module;
return OPAL_SUCCESS;
}
static int hwloc_module_init(void)
{
/* Nothing to do! */
return OPAL_SUCCESS;
}
static int hwloc_module_set(opal_maffinity_base_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 (NULL == opal_hwloc_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;
}
static int hwloc_module_node_name_to_id(char *node_name, int *id)
{
/* GLB: fix me */
*id = atoi(node_name + 3);
return OPAL_SUCCESS;
}
static int hwloc_module_bind(opal_maffinity_base_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 (NULL == opal_hwloc_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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