| /* |
| * sysctl() interface |
| * e.g. BSD/OS, NetBSD, OpenBSD, later Darwin releases |
| */ |
| #include <net-snmp/net-snmp-config.h> |
| #include <net-snmp/net-snmp-features.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 <stdlib.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| |
| #if defined(__FreeBSD__) |
| #include <sys/resource.h> |
| #if !defined(CPUSTATES) |
| #include <sys/dkstat.h> |
| #endif |
| #else |
| #include <sys/sched.h> |
| #endif |
| |
| #include <sys/param.h> |
| #include <sys/sysctl.h> |
| #include <sys/vmmeter.h> |
| #ifdef HAVE_VM_VM_PARAM_H |
| #include <vm/vm_param.h> |
| #endif |
| #ifdef HAVE_VM_VM_EXTERN_H |
| #include <vm/vm_extern.h> |
| #endif |
| |
| netsnmp_feature_require(hardware_cpu_copy_stats) |
| |
| void _cpu_copy_stats( netsnmp_cpu_info *cpu ); |
| |
| /* |
| * Initialise the list of CPUs on the system |
| * (including descriptions) |
| */ |
| void init_cpu_sysctl( void ) { |
| int i, n; |
| size_t siz; |
| int ncpu_mib[] = { CTL_HW, HW_NCPU }; |
| #if !(defined(__NetBSD__) && ( defined(__i386__) || defined(__x86_64__) ) ) |
| int model_mib[] = { CTL_HW, HW_MODEL }; |
| #endif |
| char descr[ SNMP_MAXBUF ]; |
| netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 ); |
| strcpy(cpu->name, "Overall CPU statistics"); |
| |
| siz = sizeof(n); |
| sysctl(ncpu_mib, 2, &n, &siz, NULL, 0); |
| if ( n <= 0 ) |
| n = 1; /* Single CPU system */ |
| siz = sizeof(descr); |
| #if defined(__NetBSD__) && ( defined(__i386__) || defined(__x86_64__) ) |
| sysctlbyname("machdep.cpu_brand", descr, &siz, NULL, 0); |
| #else |
| sysctl(model_mib, 2, descr, &siz, NULL, 0); |
| #endif |
| for ( i = 0; i < n; i++ ) { |
| cpu = netsnmp_cpu_get_byIdx( i, 1 ); |
| cpu->status = 2; /* running */ |
| sprintf( cpu->name, "cpu%d", i ); |
| sprintf( cpu->descr, "%s", descr ); |
| } |
| cpu_num = n; |
| } |
| |
| |
| #if defined(__NetBSD__) |
| #define NETSNMP_CPU_STATS uint64_t |
| #else |
| #define NETSNMP_CPU_STATS long |
| #endif |
| |
| #if defined(__NetBSD__) |
| #define NETSNMP_KERN_CPU KERN_CP_TIME |
| #define NETSNMP_KERN_MCPU |
| #define NETSNMP_KERN_MCPU_TYPE NETSNMP_CPU_STATS |
| #elif defined(KERN_CPUSTATS) /* BSDi */ |
| #define NETSNMP_KERN_CPU KERN_CPUSTATS |
| #elif defined(KERN_CPTIME2) /* OpenBSD */ |
| #define NETSNMP_KERN_CPU KERN_CPTIME |
| #define NETSNMP_KERN_MCPU |
| #define NETSNMP_KERN_MCPU_TYPE u_int64_t |
| #elif defined(KERN_CPTIME) /* OpenBSD */ |
| #define NETSNMP_KERN_CPU KERN_CPTIME |
| |
| #elif defined(__FreeBSD__) |
| #define NETSNMP_KERN_MCPU 1 /* Enable support for multi-cpu stats. Valid for FreeBSD >=6.4, >=7.1, >=8.0 and beyond */ |
| #define NETSNMP_KERN_MCPU_TYPE NETSNMP_CPU_STATS |
| |
| #else |
| #error "No CPU statistics sysctl token" |
| #endif |
| |
| /* |
| Need to check details before enabling this! |
| #if defined(KERN_MPCPUSTATS) |
| #define NETSNMP_KERN_MCPU KERN_MPCPUSTATS |
| #define NETSNMP_KERN_MCPU_TYPE struct mpcpustats |
| #elif defined(KERN_MP_CPUSTATS) |
| #define NETSNMP_KERN_MCPU KERN_MP_CPUSTATS |
| #define NETSNMP_KERN_MCPU_TYPE struct cpustats |
| #endif |
| */ |
| |
| #if defined(VM_UVMEXP2) || defined(VM_UVMEXP) |
| #define NS_VM_INTR intrs |
| #define NS_VM_SWTCH swtch |
| #define NS_VM_PAGEIN pageins |
| #define NS_VM_PAGEOUT pdpageouts |
| #ifdef HAVE_STRUCT_UVMEXP_PGSWAPIN |
| #define NS_VM_SWAPIN pgswapin |
| #define NS_VM_SWAPOUT pgswapout |
| #else |
| #define NS_VM_SWAPIN swapins |
| #define NS_VM_SWAPOUT swapouts |
| #endif |
| |
| #if defined(VM_UVMEXP2) /* NetBSD 1.6+ */ |
| #define NETSNMP_VM_STATS VM_UVMEXP2 |
| #define NETSNMP_VM_STATS_TYPE struct uvmexp_sysctl |
| #else /* VM_UVMEXP */ /* OpenBSD 3+, NetBSD 1.6+ */ |
| #define NETSNMP_VM_STATS VM_UVMEXP |
| #define NETSNMP_VM_STATS_TYPE struct uvmexp |
| #endif /* VM_UVMEXP2 || VM_UVMEXP */ |
| |
| #elif defined(__FreeBSD__) /* FreeBSD */ |
| #define NETSNMP_VM_STATS VM_METER |
| #define NETSNMP_VM_STATS_TYPE struct vmmeter |
| #define NS_VM_INTR v_intr |
| #define NS_VM_SWTCH v_swtch |
| #define NS_VM_PAGEIN v_swappgsin |
| #define NS_VM_PAGEOUT v_swappgsout |
| #define NS_VM_SWAPIN v_swapin |
| #define NS_VM_SWAPOUT v_swapout |
| |
| #elif defined(VM_METER) /* OpenBSD, NetBSD */ |
| #define NETSNMP_VM_STATS VM_METER |
| #define NETSNMP_VM_STATS_TYPE struct vmtotal |
| |
| #elif defined(VM_CNT) /* BSDi */ |
| #define NETSNMP_VM_STATS VM_CNT |
| #define NETSNMP_VM_STATS_TYPE struct vmmeter |
| #define NS_VM_INTR v_intr |
| #define NS_VM_SWTCH v_swtch |
| #undef NS_VM_PAGEIN |
| #undef NS_VM_PAGEOUT |
| #define NS_VM_SWAPIN v_swpin |
| #define NS_VM_SWAPOUT v_swpout |
| #endif |
| |
| |
| /* |
| * Load the latest CPU usage statistics |
| */ |
| int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) { |
| |
| /* |
| * Strictly speaking, BSDi ought to use |
| * "struct cpustats cpu_stats" |
| * but this array was used in the previous code, and |
| * is correct for the {Open,Net}BSD versions too. |
| * Don't fight it, Dave - go with the flow.... |
| */ |
| NETSNMP_CPU_STATS cpu_stats[CPUSTATES]; |
| size_t cpu_size = sizeof(cpu_stats); |
| #if !defined(__FreeBSD__) && !defined(__NetBSD__) |
| int cpu_mib[] = { CTL_KERN, NETSNMP_KERN_CPU }; |
| #endif |
| #ifdef __FreeBSD__ |
| static int cp_times = -1; |
| #endif |
| #ifdef KERN_CPTIME2 |
| int mcpu_mib[] = { CTL_KERN, KERN_CPTIME2, 0 }; |
| #endif |
| #ifdef NETSNMP_KERN_MCPU |
| int i; |
| int act_cpu = cpu_num; |
| NETSNMP_KERN_MCPU_TYPE *mcpu_stats; |
| size_t mcpu_size; |
| #endif |
| NETSNMP_VM_STATS_TYPE mem_stats; |
| int mem_mib[] = { CTL_VM, NETSNMP_VM_STATS }; |
| size_t mem_size = sizeof(NETSNMP_VM_STATS_TYPE); |
| netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 0 ); |
| |
| #if defined(__FreeBSD__) || defined(__NetBSD__) |
| sysctlbyname("kern.cp_time", cpu_stats, &cpu_size, NULL, 0); |
| #else |
| sysctl(cpu_mib, 2, cpu_stats, &cpu_size, NULL, 0); |
| #endif |
| cpu->user_ticks = cpu_stats[CP_USER]; |
| cpu->nice_ticks = cpu_stats[CP_NICE]; |
| cpu->sys2_ticks = cpu_stats[CP_SYS]+cpu_stats[CP_INTR]; |
| cpu->kern_ticks = cpu_stats[CP_SYS]; |
| cpu->idle_ticks = cpu_stats[CP_IDLE]; |
| cpu->intrpt_ticks = cpu_stats[CP_INTR]; |
| /* wait_ticks, sirq_ticks unused */ |
| |
| /* |
| * Interrupt/Context Switch statistics |
| * XXX - Do these really belong here ? |
| */ |
| sysctl(mem_mib, 2, &mem_stats, &mem_size, NULL, 0); |
| cpu->nInterrupts = mem_stats.NS_VM_INTR; |
| cpu->nCtxSwitches = mem_stats.NS_VM_SWTCH; |
| cpu->swapIn = mem_stats.NS_VM_SWAPIN; |
| cpu->swapOut = mem_stats.NS_VM_SWAPOUT; |
| #ifdef NS_VM_PAGEIN |
| cpu->pageIn = mem_stats.NS_VM_PAGEIN; |
| #endif |
| #ifdef NS_VM_PAGEOUT |
| cpu->pageOut = mem_stats.NS_VM_PAGEOUT; |
| #endif |
| |
| #ifdef NETSNMP_KERN_MCPU |
| #if defined(KERN_CPTIME2) |
| mcpu_size = cpu_num*sizeof(cpu_stats); |
| mcpu_stats = malloc(mcpu_size); |
| #elif defined(__NetBSD__) |
| mcpu_size = cpu_num*sizeof(cpu_stats); |
| mcpu_stats = malloc(mcpu_size); |
| sysctlbyname("kern.cp_time", mcpu_stats, &mcpu_size, NULL, 0); |
| #elif defined(__FreeBSD__) |
| if (cp_times == -1) { |
| int ret = sysctlbyname("kern.cp_times", NULL, &mcpu_size, NULL, 0); |
| cp_times = ret == -1 ? 0 : 1; |
| } |
| if (cp_times) { |
| sysctlbyname("kern.cp_times", NULL, &mcpu_size, NULL, 0); |
| mcpu_stats = malloc(mcpu_size); |
| sysctlbyname("kern.cp_times", mcpu_stats, &mcpu_size, NULL, 0); |
| } |
| else { |
| mcpu_size = sizeof(cpu_stats); |
| mcpu_stats = malloc(mcpu_size); |
| sysctlbyname("kern.cp_time", mcpu_stats, &mcpu_size, NULL, 0); |
| act_cpu = 1; |
| } |
| #endif |
| for ( i = 0; i < act_cpu; i++ ) { |
| cpu = netsnmp_cpu_get_byIdx( i, 0 ); |
| /* XXX - per-CPU statistics - mcpu_mib[i].??? */ |
| #ifdef KERN_CPTIME2 |
| mcpu_mib[2] = i; |
| sysctl(mcpu_mib, 3, mcpu_stats+i*CPUSTATES, &mcpu_size, NULL, 0); |
| #endif |
| /* Almost copy & paste of previous cpu stats stuff :) */ |
| cpu->user_ticks = mcpu_stats[(i*CPUSTATES)+CP_USER]; |
| cpu->nice_ticks = mcpu_stats[(i*CPUSTATES)+CP_NICE]; |
| cpu->sys2_ticks = mcpu_stats[(i*CPUSTATES)+CP_SYS]+mcpu_stats[(i*CPUSTATES)+CP_INTR]; |
| cpu->kern_ticks = mcpu_stats[(i*CPUSTATES)+CP_SYS]; |
| cpu->idle_ticks = mcpu_stats[(i*CPUSTATES)+CP_IDLE]; |
| cpu->intrpt_ticks = mcpu_stats[(i*CPUSTATES)+CP_INTR]; |
| /* wait_ticks, sirq_ticks unused */ |
| |
| /* |
| * Interrupt/Context Switch statistics |
| * XXX - Do these really belong here ? |
| */ |
| |
| /* There's no real need to execute another sysctl() |
| * |
| * sysctl(mem_mib, 2, &mem_stats, &mem_size, NULL, 0); |
| */ |
| cpu->nInterrupts = mem_stats.NS_VM_INTR; |
| cpu->nCtxSwitches = mem_stats.NS_VM_SWTCH; |
| cpu->swapIn = mem_stats.NS_VM_SWAPIN; |
| cpu->swapOut = mem_stats.NS_VM_SWAPOUT; |
| #ifdef NS_VM_PAGEIN |
| cpu->pageIn = mem_stats.NS_VM_PAGEIN; |
| #endif |
| #ifdef NS_VM_PAGEOUT |
| cpu->pageOut = mem_stats.NS_VM_PAGEOUT; |
| #endif |
| } |
| free(mcpu_stats); |
| #else /* NETSNMP_KERN_MCPU */ |
| /* Copy "overall" figures to cpu0 entry */ |
| _cpu_copy_stats( cpu ); |
| #endif /* NETSNMP_KERN_MCPU */ |
| |
| return 0; |
| } |
