Import of CMU's RAIDframe via NetBSD.

1 files changed, 195 insertions, 0 deletions

diff --git a/sys/dev/raidframe/rf_cpuutil.c b/sys/dev/raidframe/rf_cpuutil.c
new file mode 100644
index 00000000000..1816740bfc3
--- /dev/null
+++ b/sys/dev/raidframe/rf_cpuutil.c
@@ -0,0 +1,195 @@
+/*	$OpenBSD: rf_cpuutil.c,v 1.1 1999/01/11 14:29:03 niklas Exp $	*/
+/*	$NetBSD: rf_cpuutil.c,v 1.1 1998/11/13 04:20:27 oster Exp $	*/
+/*
+ * Copyright (c) 1995 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Authors: Mark Holland, Jim Zelenka
+ *
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+/*
+ * rf_cpuutil.c
+ *
+ * track cpu utilization
+ */
+
+#ifdef _KERNEL
+#define KERNEL
+#endif
+
+#include "rf_cpuutil.h"
+
+#ifndef KERNEL
+#include <errno.h>
+#endif /* !KERNEL */
+#include "rf_types.h"
+#include "rf_general.h"
+#include "rf_shutdown.h"
+#include "rf_sys.h"
+#ifdef __osf__
+#include <sys/table.h>
+#endif /* __osf__ */
+#ifdef AIX
+#include <nlist.h>
+#include <sys/sysinfo.h>
+#endif /* AIX */
+#ifdef KERNEL
+#if !defined(__NetBSD__) && !defined(__OpenBSD__)
+#include <sys/dk.h>
+#endif /* __NetBSD__ && !__OpenBSD__ */
+#else /* KERNEL */
+extern int table(int id, int index, void *addr, int nel, u_int lel);
+#endif /* KERNEL */
+
+#ifdef __osf__
+static struct tbl_sysinfo start, stop;
+#endif /* __osf__ */
+
+#ifdef AIX
+static int kmem_fd;
+static off_t sysinfo_offset;
+static struct sysinfo sysinfo_start, sysinfo_stop;
+static struct nlist namelist[] = {
+  {{"sysinfo"}},
+  {{""}},
+};
+#endif /* AIX */
+
+#ifdef AIX
+static void rf_ShutdownCpuMonitor(ignored)
+  void  *ignored;
+{
+  close(kmem_fd);
+}
+#endif /* AIX */
+
+int rf_ConfigureCpuMonitor(listp)
+  RF_ShutdownList_t  **listp;
+{
+#ifdef AIX
+  int rc;
+
+  rc = knlist(namelist, 1, sizeof(struct nlist));
+  if (rc) {
+    RF_ERRORMSG("Could not knlist() to config CPU monitor\n");
+    return(errno);
+  }
+  if (namelist[0].n_value == 0) {
+    RF_ERRORMSG("Got bogus results from knlist() for CPU monitor\n");
+    return(EIO);
+  }
+  sysinfo_offset = namelist[0].n_value;
+  kmem_fd = open("/dev/kmem", O_RDONLY);
+  if (kmem_fd < 0) {
+    perror("/dev/kmem");
+    return(errno);
+  }
+  rc = rf_ShutdownCreate(listp, rf_ShutdownCpuMonitor, NULL);
+  if (rc) {
+    RF_ERRORMSG3("Unable to add to shutdown list file %s line %d rc=%d\n", __FILE__,
+			__LINE__, rc);
+    rf_ShutdownCpuMonitor(NULL);
+    return(rc);
+  }
+#endif /* AIX */
+  return(0);
+}
+
+void rf_start_cpu_monitor()
+{
+#ifdef __osf__
+#ifndef KERNEL
+  if (table(TBL_SYSINFO, 0, &start, 1, sizeof(start)) != 1) {
+    printf("Unable to get sysinfo for cpu utilization monitor\n");
+    perror("start_cpu_monitor");
+  }
+#else /* !KERNEL */
+  /* start.si_user = cp_time[CP_USER];
+  start.si_nice = cp_time[CP_NICE];
+  start.si_sys  = cp_time[CP_SYS];
+  start.si_idle = cp_time[CP_IDLE];
+  start.wait    = cp_time[CP_WAIT]; */
+#endif /* !KERNEL */
+#endif /* __osf__ */
+#ifdef AIX
+  off_t off;
+  int rc;
+
+  off = lseek(kmem_fd, sysinfo_offset, SEEK_SET);
+  RF_ASSERT(off == sysinfo_offset);
+  rc = read(kmem_fd, &sysinfo_start, sizeof(struct sysinfo));
+  if (rc != sizeof(struct sysinfo)) {
+    RF_ERRORMSG2("Starting CPU monitor: rc=%d != %d\n", rc,
+      sizeof(struct sysinfo));
+  }
+#endif /* AIX */
+}
+
+void rf_stop_cpu_monitor()
+{
+#ifdef __osf__
+#ifndef KERNEL
+  if (table(TBL_SYSINFO, 0, &stop, 1, sizeof(stop)) != 1) {
+    printf("Unable to get sysinfo for cpu utilization monitor\n");
+    perror("stop_cpu_monitor");
+  }
+#else /* !KERNEL */
+  /* stop.si_user = cp_time[CP_USER];
+  stop.si_nice = cp_time[CP_NICE];
+  stop.si_sys  = cp_time[CP_SYS];
+  stop.si_idle = cp_time[CP_IDLE];
+  stop.wait    = cp_time[CP_WAIT]; */
+#endif /* !KERNEL */
+#endif /* __osf__ */
+#ifdef AIX
+  off_t off;
+  int rc;
+
+  off = lseek(kmem_fd, sysinfo_offset, SEEK_SET);
+  RF_ASSERT(off == sysinfo_offset);
+  rc = read(kmem_fd, &sysinfo_stop, sizeof(struct sysinfo));
+  if (rc != sizeof(struct sysinfo)) {
+    RF_ERRORMSG2("Stopping CPU monitor: rc=%d != %d\n", rc,
+      sizeof(struct sysinfo));
+  }
+#endif /* AIX */
+}
+
+void rf_print_cpu_util(s)
+  char  *s;
+{
+#ifdef __osf__
+  long totalticks, idleticks;
+
+  idleticks = stop.si_idle - start.si_idle + stop.wait - start.wait;
+  totalticks = stop.si_user - start.si_user + stop.si_nice - start.si_nice +
+	       stop.si_sys - start.si_sys + idleticks;
+  printf("CPU utilization during %s was %d %%\n", s, 100 - 100*idleticks/totalticks);
+#endif /* __osf__ */
+#ifdef AIX
+  long idle;
+
+  /* XXX compute a percentage here */
+  idle = (long)(sysinfo_stop.cpu[CPU_IDLE] - sysinfo_start.cpu[CPU_IDLE]);
+  printf("%ld idle ticks during %s.\n", idle, s);
+#endif /* AIX */
+}