patch-2.2.18 linux/arch/s390/tools/hwc/hwc_measure.c

• Lines: 80
• Date: Wed Nov 8 23:04:59 2000
• Orig file: v2.2.17/arch/s390/tools/hwc/hwc_measure.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/arch/s390/tools/hwc/hwc_measure.c linux/arch/s390/tools/hwc/hwc_measure.c
@@ -0,0 +1,79 @@
+/*
+ * small application for HWC measurement 
+ *
+ * Copyright (C) 2000 IBM Corporation
+ * Author(s): Martin Peschke <peschke@fh-brandenburg.de>
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+
+/* everything about the HWC low level driver ioctl-commands */
+#include "../../../../drivers/s390/char/hwc_rw.h"
+
+/* standard input, should be our HWC tty */
+#define DESCRIPTOR 0
+
+int main(int argc, char *argv[], char *env[])
+{
+	ioctl_meas_t	measured = 0;
+	signed int	retval = 0;
+
+	if (argc = 2) {
+
+		if (strcmp(argv[1], "lines") == 0) {
+			retval = ioctl(DESCRIPTOR, TIOCHWCGMEASL,
+					&measured);
+			if (retval < 0)
+				return errno;
+			else {
+				printf("%ld\n", measured);
+				return retval;
+			}
+		}
+
+		if (strcmp(argv[1], "chars") == 0) {
+			retval = ioctl(DESCRIPTOR, TIOCHWCGMEASC,
+					&measured);
+			if (retval < 0)
+				return errno;
+			else {
+				printf("%ld\n", measured);
+				return retval;
+			}
+		}
+
+		if (strcmp(argv[1], "wcalls") == 0) {
+			retval = ioctl(DESCRIPTOR, TIOCHWCGMEASS,
+					&measured);
+			if (retval < 0)
+				return errno;
+			else {
+				printf("%ld\n", measured);
+				return retval;
+			}
+		}
+
+		if (strcmp(argv[1], "reset") == 0) {
+			retval = ioctl(DESCRIPTOR, TIOCHWCSMEAS);
+			if (retval < 0)
+				return errno;
+			else	return retval;
+		}
+	}
+
+	printf("usage:\n");
+	printf("   hwc_measure lines          "
+		"(prints # of measured lines)        or\n");
+	printf("   hwc_measure_chars          "
+		"(prints # of measured characters)   or\n");
+	printf("   hwc_measure wcalls         "
+		"(prints # of measured write calls to HWC interface)   or\n");
+	printf("   hwc_measure reset          "
+		"(resets measurement counters)\n");
+
+	return -1;
+}
+