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/*
* Linux NUMA meminfo metrics cluster from sysfs
*
* Copyright (c) 2012 Red Hat.
* Copyright (c) 2009 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <dirent.h>
#include <sys/stat.h>
#include <string.h>
#include "pmapi.h"
#include "impl.h"
#include "pmda.h"
#include "indom.h"
#include "linux_table.h"
#include "proc_cpuinfo.h"
#include "proc_stat.h"
#include "numa_meminfo.h"
/* sysfs file for numa meminfo */
static struct linux_table numa_meminfo_table[] = {
{ field: "MemTotal:", maxval: 0x0 },
{ field: "MemFree:", maxval: 0x0 },
{ field: "MemUsed:", maxval: 0x0 },
{ field: "Active:", maxval: 0x0 },
{ field: "Inactive:", maxval: 0x0 },
{ field: "Active(anon):", maxval: 0x0 },
{ field: "Inactive(anon):", maxval: 0x0 },
{ field: "Active(file):", maxval: 0x0 },
{ field: "Inactive(file):", maxval: 0x0 },
{ field: "HighTotal:", maxval: 0x0 },
{ field: "HighFree:", maxval: 0x0 },
{ field: "LowTotal:", maxval: 0x0 },
{ field: "LowFree:", maxval: 0x0 },
{ field: "Unevictable:", maxval: 0x0 },
{ field: "Mlocked:", maxval: 0x0 },
{ field: "Dirty:", maxval: 0x0 },
{ field: "Writeback:", maxval: 0x0 },
{ field: "FilePages:", maxval: 0x0 },
{ field: "Mapped:", maxval: 0x0 },
{ field: "AnonPages:", maxval: 0x0 },
{ field: "Shmem:", maxval: 0x0 },
{ field: "KernelStack:", maxval: 0x0 },
{ field: "PageTables:", maxval: 0x0 },
{ field: "NFS_Unstable:", maxval: 0x0 },
{ field: "Bounce:", maxval: 0x0 },
{ field: "WritebackTmp:", maxval: 0x0 },
{ field: "Slab:", maxval: 0x0 },
{ field: "SReclaimable:", maxval: 0x0 },
{ field: "SUnreclaim:", maxval: 0x0 },
{ field: "HugePages_Total:", maxval: 0x0 },
{ field: "HugePages_Free:", maxval: 0x0 },
{ field: "HugePages_Surp:", maxval: 0x0 },
{ field: NULL }
};
/* sysfs file for numastat */
static struct linux_table numa_memstat_table[] = {
{ field: "numa_hit", maxval: ULONGLONG_MAX },
{ field: "numa_miss", maxval: ULONGLONG_MAX },
{ field: "numa_foreign", maxval: ULONGLONG_MAX },
{ field: "interleave_hit", maxval: ULONGLONG_MAX },
{ field: "local_node", maxval: ULONGLONG_MAX },
{ field: "other_node", maxval: ULONGLONG_MAX },
{ field: NULL }
};
int refresh_numa_meminfo(numa_meminfo_t *numa_meminfo, proc_cpuinfo_t *proc_cpuinfo, proc_stat_t *proc_stat)
{
int i;
FILE *fp;
pmdaIndom *idp = PMDAINDOM(NODE_INDOM);
static int started;
/* First time only */
if (!started) {
refresh_proc_stat(proc_cpuinfo, proc_stat);
if (!numa_meminfo->node_info) /* may have allocated this, but failed below */
numa_meminfo->node_info = (nodeinfo_t *)calloc(idp->it_numinst, sizeof(nodeinfo_t));
if (!numa_meminfo->node_info) {
fprintf(stderr, "%s: error allocating numa node_info: %s\n",
__FUNCTION__, osstrerror());
return -1;
}
for (i = 0; i < idp->it_numinst; i++) {
numa_meminfo->node_info[i].meminfo = linux_table_clone(numa_meminfo_table);
if (!numa_meminfo->node_info[i].meminfo) {
fprintf(stderr, "%s: error allocating meminfo: %s\n",
__FUNCTION__, osstrerror());
return -1;
}
numa_meminfo->node_info[i].memstat = linux_table_clone(numa_memstat_table);
if (!numa_meminfo->node_info[i].memstat) {
fprintf(stderr, "%s: error allocating memstat: %s\n",
__FUNCTION__, osstrerror());
return -1;
}
}
numa_meminfo->node_indom = idp;
started = 1;
}
/* Refresh */
for (i = 0; i < idp->it_numinst; i++) {
char buf[MAXPATHLEN];
snprintf(buf, sizeof(buf), "%s/sys/devices/system/node/node%d/meminfo",
linux_statspath, i);
if ((fp = fopen(buf, "r")) != NULL) {
linux_table_scan(fp, numa_meminfo->node_info[i].meminfo);
fclose(fp);
}
snprintf(buf, sizeof(buf), "%s/sys/devices/system/node/node%d/numastat",
linux_statspath, i);
if ((fp = fopen(buf, "r")) != NULL) {
linux_table_scan(fp, numa_meminfo->node_info[i].memstat);
fclose(fp);
}
}
return 0;
}
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