[S390] Linux API for writing z/VM APPLDATA Monitor records.

This patch delivers a new Linux API in the form of a misc char
device that is useable from user space and allows write access
to the z/VM APPLDATA Monitor Records collected by the *MONITOR
System Service of z/VM.

Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 34 insertions, 1 deletions

diff --git a/include/asm-s390/Kbuild b/include/asm-s390/Kbuild
index ed8955f49e47..979145026a29 100644
--- a/include/asm-s390/Kbuild
+++ b/include/asm-s390/Kbuild
@@ -1,4 +1,4 @@
 include include/asm-generic/Kbuild.asm
 
 unifdef-y += cmb.h debug.h
-header-y += dasd.h qeth.h tape390.h ucontext.h vtoc.h z90crypt.h
+header-y += dasd.h monwriter.h qeth.h tape390.h ucontext.h vtoc.h z90crypt.h
diff --git a/include/asm-s390/monwriter.h b/include/asm-s390/monwriter.h
new file mode 100644
index 000000000000..f0cbf96c52e6
--- /dev/null
+++ b/include/asm-s390/monwriter.h
@@ -0,0 +1,33 @@
+/*
+ * include/asm-s390/monwriter.h
+ *
+ * Copyright (C) IBM Corp. 2006
+ * Character device driver for writing z/VM APPLDATA monitor records
+ * Version 1.0
+ * Author(s): Melissa Howland <melissah@us.ibm.com>
+ *
+ */
+
+#ifndef _ASM_390_MONWRITER_H
+#define _ASM_390_MONWRITER_H
+
+/* mon_function values */
+#define MONWRITE_START_INTERVAL 0x00 /* start interval recording */
+#define MONWRITE_STOP_INTERVAL  0x01 /* stop interval or config recording */
+#define MONWRITE_GEN_EVENT      0x02 /* generate event record */
+#define MONWRITE_START_CONFIG   0x03 /* start configuration recording */
+
+/* the header the app uses in its write() data */
+struct monwrite_hdr {
+        unsigned char mon_function;
+        unsigned short applid;
+        unsigned char record_num;
+        unsigned short version;
+        unsigned short release;
+        unsigned short mod_level;
+        unsigned short datalen;
+        unsigned char hdrlen;
+
+} __attribute__((packed));
+
+#endif /* _ASM_390_MONWRITER_H */