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/*
* sysinfo (sysget/sysmp) interface
* e.g. IRIX 6.x
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/hardware/cpu.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/sysmp.h>
#include <sys/sysinfo.h>
#include <sys/sysget.h>
int cpu_count;
int sinfo_ksize;
struct sysinfo* sinfo_cpus; /* individual cpu stats */
struct sysinfo* sinfo_gen; /* global stats */
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_sysinfo( void )
{
int i;
netsnmp_cpu_info *cpu;
char tstr[1024];
cpu_count = sysmp(MP_NPROCS);
/* fetch struct sysinfo size in kernel */
if ((sinfo_ksize = sysmp(MP_SASZ, MPSA_SINFO)) < 0) {
snmp_log_perror("init_cpu_sysinfo: sysinfo scall interface not supported");
exit(1);
}
if (sizeof(struct sysinfo) != sinfo_ksize)
{
snmp_log_perror("init_cpu_sysinfo: size mismatch between userland and kernel sysinfo struct");
exit(1);
}
/* allocate sysinfo for all cpus + global stats */
sinfo_cpus = (struct sysinfo *) calloc(cpu_count, sinfo_ksize);
if (!sinfo_cpus) {
snmp_log_perror("init_cpu_sysinfo: Couldn't allocate memory bytes for sinfo_cpus");
exit(1);
}
sinfo_gen = (struct sysinfo *) calloc(1, sinfo_ksize);
if (!sinfo_gen) {
snmp_log_perror("init_cpu_sysinfo: Couldn't allocate memory bytes for sinfo_gen");
exit(1);
}
/* register cpus */
cpu = netsnmp_cpu_get_byIdx(-1, 1);
strcpy(cpu->name, "Overall CPU statistics");
for (i = 0; i < cpu_count ; ++i)
{
cpu = netsnmp_cpu_get_byIdx(i, 1);
sprintf(tstr, "cpu%d",i);
strcpy(cpu->name, tstr);
strcpy(cpu->descr, "Central Processing Unit");
}
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic )
{
int i;
netsnmp_cpu_info* cpu;
sgt_cookie_t ck;
/* fetch global stats */
cpu = netsnmp_cpu_get_byIdx(-1, 0);
if (sysmp(MP_SAGET, MPSA_SINFO, (char *) sinfo_gen, sinfo_ksize) < 0)
{
snmp_log_perror("netsnmp_cpu_arch_load: sysmp() failed");
exit(1);
}
DEBUGMSGTL(("cpu_sysinfo", "total cpu kernel: %lu\n", sinfo_gen->cpu[CPU_KERNEL]));
cpu->sys2_ticks = (unsigned long long) sinfo_gen->cpu[CPU_KERNEL] + (unsigned long long) sinfo_gen->cpu[CPU_SXBRK] + (unsigned long long) sinfo_gen->cpu[CPU_INTR];
cpu->kern_ticks = (unsigned long long) sinfo_gen->cpu[CPU_KERNEL];
cpu->intrpt_ticks = (unsigned long long) sinfo_gen->cpu[CPU_INTR];
cpu->user_ticks = (unsigned long long) sinfo_gen->cpu[CPU_USER];
cpu->wait_ticks = (unsigned long long) sinfo_gen->cpu[CPU_WAIT];
cpu->idle_ticks = (unsigned long long) sinfo_gen->cpu[CPU_IDLE];
/* XXX - Do these really belong here ? */
cpu->pageIn = (unsigned long long)0;
cpu->pageOut = (unsigned long long)0;
cpu->swapIn = (unsigned long long)sinfo_gen->swapin;
cpu->swapOut = (unsigned long long)sinfo_gen->swapout;
cpu->nInterrupts = (unsigned long long)sinfo_gen->intr_svcd;
cpu->nCtxSwitches = (unsigned long long)sinfo_gen->pswitch;
/* fetch individual cpu stats */
SGT_COOKIE_INIT(&ck);
if (sysget(MPSA_SINFO, (char *) sinfo_cpus, sinfo_ksize * cpu_count, SGT_READ | SGT_CPUS | SGT_SUM, &ck) < 0)
{
snmp_log_perror("netsnmp_cpu_arch_load: sysget() failed");
exit(1);
}
for (i = 0; i < cpu_count ; ++i)
{
cpu = netsnmp_cpu_get_byIdx(i, 0);
DEBUGMSGTL(("cpu_sysinfo", "cpu %u kernel: %lu\n", i, sinfo_cpus[i].cpu[CPU_KERNEL]));
cpu->sys2_ticks = (unsigned long long)sinfo_cpus[i].cpu[CPU_KERNEL] + (unsigned long long) sinfo_cpus[i].cpu[CPU_SXBRK] + (unsigned long long)sinfo_cpus[i].cpu[CPU_INTR];
cpu->intrpt_ticks = (unsigned long long)sinfo_cpus[i].cpu[CPU_INTR];
cpu->user_ticks = (unsigned long long)sinfo_cpus[i].cpu[CPU_USER];
cpu->wait_ticks = (unsigned long long)sinfo_cpus[i].cpu[CPU_WAIT];
cpu->idle_ticks = (unsigned long long)sinfo_cpus[i].cpu[CPU_IDLE];
}
return 0;
}
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