1 files changed, 107 insertions, 0 deletions
diff --git a/agent/mibgroup/hardware/cpu/cpu_perfstat.c b/agent/mibgroup/hardware/cpu/cpu_perfstat.c
new file mode 100644
index 0000000..c15fa2f
--- /dev/null
+++ b/agent/mibgroup/hardware/cpu/cpu_perfstat.c
@@ -0,0 +1,107 @@
+/*
+ *   perfstat() interface
+ *     e.g. AIX
+ */
+#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 <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include <libperfstat.h>
+
+void _cpu_copy_stats( netsnmp_cpu_info *cpu );
+
+    /*
+     * Initialise the list of CPUs on the system
+     *   (including descriptions)
+     */
+void init_cpu_perfstat( void ) {
+    int                   i;
+    perfstat_id_t         name;
+    perfstat_cpu_t       *cs2;
+    netsnmp_cpu_info     *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
+    strcpy(cpu->name, "Overall CPU statistics");
+
+    cpu_num = perfstat_cpu( NULL, NULL, sizeof(perfstat_cpu_t), 0 );
+    cs2 = malloc( cpu_num*sizeof(perfstat_cpu_t));
+ 
+    strcpy( name.name, "");
+    if (perfstat_cpu(&name, cs2, sizeof(perfstat_cpu_t), cpu_num) > 0) {
+        for ( i = 0; i < cpu_num; i++ ) {
+            cpu = netsnmp_cpu_get_byIdx( i, 1 );
+            sprintf( cpu->name, cs2[i].name);
+        }
+    }
+    free(cs2);
+}
+
+
+    /*
+     * Load the latest CPU usage statistics
+     */
+int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
+    int                     i,n;
+    perfstat_id_t           name;
+    perfstat_cpu_total_t    cs;
+    perfstat_cpu_t         *cs2;
+    perfstat_memory_total_t ms;
+    netsnmp_cpu_info       *cpu = netsnmp_cpu_get_byIdx( -1, 0 );
+
+    if (perfstat_cpu_total((perfstat_id_t *)NULL, &cs,
+                     sizeof(perfstat_cpu_total_t), 1) > 0) {
+
+        /* Returns 'u_longlong_t' statistics */
+        cpu->user_ticks = (unsigned long)cs.user / cs.ncpus;
+        cpu->sys_ticks  = ((unsigned long)cs.sys + (unsigned long)cs.wait) / cs.ncpus;
+        cpu->kern_ticks = (unsigned long)cs.sys / cs.ncpus;
+        cpu->wait_ticks = (unsigned long)cs.wait / cs.ncpus;
+        cpu->idle_ticks = (unsigned long)cs.idle / cs.ncpus;
+        /* intrpt_ticks, sirq_ticks, nice_ticks unused */
+    
+        /*
+         * Interrupt/Context Switch statistics
+         *   XXX - Do these really belong here ?
+         */
+        cpu->pageIn       = (unsigned long)cs.sysread;
+        cpu->pageOut      = (unsigned long)cs.syswrite;
+        cpu->nInterrupts  = (unsigned long)cs.devintrs + cs.softintrs;
+        cpu->nCtxSwitches = (unsigned long)cs.pswitch;
+    }
+
+    if (perfstat_memory_total((perfstat_id_t *)NULL, &ms,
+                     sizeof(perfstat_memory_total_t), 1) > 0) {
+        cpu->swapIn  = (unsigned long)ms.pgspins;
+        cpu->swapOut = (unsigned long)ms.pgspouts;
+    }
+
+
+    /*
+     * Per-CPU statistics
+     */
+    n   = cs.ncpus;   /* XXX - Compare against cpu_num */
+    cs2 = malloc( n*sizeof(perfstat_cpu_t));
+    strcpy( name.name, "");
+    if (perfstat_cpu(&name, cs2, sizeof(perfstat_cpu_t), n) > 0) {
+        for ( i = 0; i < n; i++ ) {
+            cpu = netsnmp_cpu_get_byIdx( i, 0 );
+            cpu->user_ticks = (unsigned long)cs2[i].user;
+            cpu->sys_ticks  = (unsigned long)cs2[i].sys + (unsigned long)cs2[i].wait;
+            cpu->kern_ticks = (unsigned long)cs2[i].sys;
+            cpu->wait_ticks = (unsigned long)cs2[i].wait;
+            cpu->idle_ticks = (unsigned long)cs2[i].idle;
+            cpu->pageIn     = (unsigned long)cs2[i].sysread;
+            cpu->pageOut    = (unsigned long)cs2[i].syswrite;
+            cpu->nCtxSwitches = (unsigned long)cs2[i].pswitch;
+            /* Interrupt stats only apply overall, not per-CPU */
+        }
+    } else {
+        _cpu_copy_stats( cpu );
+    }
+    free(cs2);
+
+    return 0;
+}