[patch/s390 09/46] move sysinfo.c from drivers/s390 to arch/s390/kernel

[Martin Schwidefsky <schwidefsky@de.ibm.com>]

[-- Attachment #1: 108-move-sysinfo.diff --]
[-- Type: text/plain, Size: 28715 bytes --]

From: Heiko Carstens <heiko.carstens@de.ibm.com>

All in sysinfo.c is core kernel code and not driver code. So move it
to arch/s390/kernel. Also includes some small cleanups.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

 arch/s390/kernel/Makefile  |    4 
 arch/s390/kernel/sysinfo.c |  428 +++++++++++++++++++++++++++++++++++++++++
 drivers/s390/Makefile      |    4 
 drivers/s390/sysinfo.c     |  469 ---------------------------------------------
 4 files changed, 432 insertions(+), 473 deletions(-)

Index: quilt-2.6/arch/s390/kernel/Makefile
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/Makefile
+++ quilt-2.6/arch/s390/kernel/Makefile
@@ -17,10 +17,12 @@ CFLAGS_smp.o	:= -Wno-nonnull
 #
 CFLAGS_ptrace.o		+= -DUTS_MACHINE='"$(UTS_MACHINE)"'
 
+CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
+
 obj-y	:=  bitmap.o traps.o time.o process.o base.o early.o setup.o \
 	    processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
 	    s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \
-	    vdso.o vtime.o
+	    vdso.o vtime.o sysinfo.o
 
 obj-y	+= $(if $(CONFIG_64BIT),entry64.o,entry.o)
 obj-y	+= $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
Index: quilt-2.6/arch/s390/kernel/sysinfo.c
===================================================================
--- /dev/null
+++ quilt-2.6/arch/s390/kernel/sysinfo.c
@@ -0,0 +1,428 @@
+/*
+ *  Copyright IBM Corp. 2001, 2009
+ *  Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
+ *	       Martin Schwidefsky <schwidefsky@de.ibm.com>,
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <asm/ebcdic.h>
+#include <asm/sysinfo.h>
+#include <asm/cpcmd.h>
+
+/* Sigh, math-emu. Don't ask. */
+#include <asm/sfp-util.h>
+#include <math-emu/soft-fp.h>
+#include <math-emu/single.h>
+
+static inline int stsi_0(void)
+{
+	int rc = stsi(NULL, 0, 0, 0);
+	return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
+}
+
+static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
+{
+	if (stsi(info, 1, 1, 1) == -ENOSYS)
+		return len;
+
+	EBCASC(info->manufacturer, sizeof(info->manufacturer));
+	EBCASC(info->type, sizeof(info->type));
+	EBCASC(info->model, sizeof(info->model));
+	EBCASC(info->sequence, sizeof(info->sequence));
+	EBCASC(info->plant, sizeof(info->plant));
+	EBCASC(info->model_capacity, sizeof(info->model_capacity));
+	EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
+	EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
+	len += sprintf(page + len, "Manufacturer:         %-16.16s\n",
+		       info->manufacturer);
+	len += sprintf(page + len, "Type:                 %-4.4s\n",
+		       info->type);
+	if (info->model[0] != '\0')
+		/*
+		 * Sigh: the model field has been renamed with System z9
+		 * to model_capacity and a new model field has been added
+		 * after the plant field. To avoid confusing older programs
+		 * the "Model:" prints "model_capacity model" or just
+		 * "model_capacity" if the model string is empty .
+		 */
+		len += sprintf(page + len,
+			       "Model:                %-16.16s %-16.16s\n",
+			       info->model_capacity, info->model);
+	else
+		len += sprintf(page + len, "Model:                %-16.16s\n",
+			       info->model_capacity);
+	len += sprintf(page + len, "Sequence Code:        %-16.16s\n",
+		       info->sequence);
+	len += sprintf(page + len, "Plant:                %-4.4s\n",
+		       info->plant);
+	len += sprintf(page + len, "Model Capacity:       %-16.16s %08u\n",
+		       info->model_capacity, *(u32 *) info->model_cap_rating);
+	if (info->model_perm_cap[0] != '\0')
+		len += sprintf(page + len,
+			       "Model Perm. Capacity: %-16.16s %08u\n",
+			       info->model_perm_cap,
+			       *(u32 *) info->model_perm_cap_rating);
+	if (info->model_temp_cap[0] != '\0')
+		len += sprintf(page + len,
+			       "Model Temp. Capacity: %-16.16s %08u\n",
+			       info->model_temp_cap,
+			       *(u32 *) info->model_temp_cap_rating);
+	return len;
+}
+
+static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
+{
+	struct sysinfo_1_2_2_extension *ext;
+	int i;
+
+	if (stsi(info, 1, 2, 2) == -ENOSYS)
+		return len;
+	ext = (struct sysinfo_1_2_2_extension *)
+		((unsigned long) info + info->acc_offset);
+
+	len += sprintf(page + len, "\n");
+	len += sprintf(page + len, "CPUs Total:           %d\n",
+		       info->cpus_total);
+	len += sprintf(page + len, "CPUs Configured:      %d\n",
+		       info->cpus_configured);
+	len += sprintf(page + len, "CPUs Standby:         %d\n",
+		       info->cpus_standby);
+	len += sprintf(page + len, "CPUs Reserved:        %d\n",
+		       info->cpus_reserved);
+
+	if (info->format == 1) {
+		/*
+		 * Sigh 2. According to the specification the alternate
+		 * capability field is a 32 bit floating point number
+		 * if the higher order 8 bits are not zero. Printing
+		 * a floating point number in the kernel is a no-no,
+		 * always print the number as 32 bit unsigned integer.
+		 * The user-space needs to know about the strange
+		 * encoding of the alternate cpu capability.
+		 */
+		len += sprintf(page + len, "Capability:           %u %u\n",
+			       info->capability, ext->alt_capability);
+		for (i = 2; i <= info->cpus_total; i++)
+			len += sprintf(page + len,
+				       "Adjustment %02d-way:    %u %u\n",
+				       i, info->adjustment[i-2],
+				       ext->alt_adjustment[i-2]);
+
+	} else {
+		len += sprintf(page + len, "Capability:           %u\n",
+			       info->capability);
+		for (i = 2; i <= info->cpus_total; i++)
+			len += sprintf(page + len,
+				       "Adjustment %02d-way:    %u\n",
+				       i, info->adjustment[i-2]);
+	}
+
+	if (info->secondary_capability != 0)
+		len += sprintf(page + len, "Secondary Capability: %d\n",
+			       info->secondary_capability);
+	return len;
+}
+
+static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len)
+{
+	if (stsi(info, 2, 2, 2) == -ENOSYS)
+		return len;
+
+	EBCASC(info->name, sizeof(info->name));
+
+	len += sprintf(page + len, "\n");
+	len += sprintf(page + len, "LPAR Number:          %d\n",
+		       info->lpar_number);
+
+	len += sprintf(page + len, "LPAR Characteristics: ");
+	if (info->characteristics & LPAR_CHAR_DEDICATED)
+		len += sprintf(page + len, "Dedicated ");
+	if (info->characteristics & LPAR_CHAR_SHARED)
+		len += sprintf(page + len, "Shared ");
+	if (info->characteristics & LPAR_CHAR_LIMITED)
+		len += sprintf(page + len, "Limited ");
+	len += sprintf(page + len, "\n");
+
+	len += sprintf(page + len, "LPAR Name:            %-8.8s\n",
+		       info->name);
+
+	len += sprintf(page + len, "LPAR Adjustment:      %d\n",
+		       info->caf);
+
+	len += sprintf(page + len, "LPAR CPUs Total:      %d\n",
+		       info->cpus_total);
+	len += sprintf(page + len, "LPAR CPUs Configured: %d\n",
+		       info->cpus_configured);
+	len += sprintf(page + len, "LPAR CPUs Standby:    %d\n",
+		       info->cpus_standby);
+	len += sprintf(page + len, "LPAR CPUs Reserved:   %d\n",
+		       info->cpus_reserved);
+	len += sprintf(page + len, "LPAR CPUs Dedicated:  %d\n",
+		       info->cpus_dedicated);
+	len += sprintf(page + len, "LPAR CPUs Shared:     %d\n",
+		       info->cpus_shared);
+	return len;
+}
+
+static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len)
+{
+	int i;
+
+	if (stsi(info, 3, 2, 2) == -ENOSYS)
+		return len;
+	for (i = 0; i < info->count; i++) {
+		EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
+		EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
+		len += sprintf(page + len, "\n");
+		len += sprintf(page + len, "VM%02d Name:            %-8.8s\n",
+			       i, info->vm[i].name);
+		len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n",
+			       i, info->vm[i].cpi);
+
+		len += sprintf(page + len, "VM%02d Adjustment:      %d\n",
+			       i, info->vm[i].caf);
+
+		len += sprintf(page + len, "VM%02d CPUs Total:      %d\n",
+			       i, info->vm[i].cpus_total);
+		len += sprintf(page + len, "VM%02d CPUs Configured: %d\n",
+			       i, info->vm[i].cpus_configured);
+		len += sprintf(page + len, "VM%02d CPUs Standby:    %d\n",
+			       i, info->vm[i].cpus_standby);
+		len += sprintf(page + len, "VM%02d CPUs Reserved:   %d\n",
+			       i, info->vm[i].cpus_reserved);
+	}
+	return len;
+}
+
+static int proc_read_sysinfo(char *page, char **start,
+			     off_t off, int count,
+			     int *eof, void *data)
+{
+	unsigned long info = get_zeroed_page(GFP_KERNEL);
+	int level, len;
+
+	if (!info)
+		return 0;
+
+	len = 0;
+	level = stsi_0();
+	if (level >= 1)
+		len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
+
+	if (level >= 1)
+		len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
+
+	if (level >= 2)
+		len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len);
+
+	if (level >= 3)
+		len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len);
+
+	free_page(info);
+	return len;
+}
+
+static __init int create_proc_sysinfo(void)
+{
+	create_proc_read_entry("sysinfo", 0444, NULL,
+			       proc_read_sysinfo, NULL);
+	return 0;
+}
+device_initcall(create_proc_sysinfo);
+
+/*
+ * Service levels interface.
+ */
+
+static DECLARE_RWSEM(service_level_sem);
+static LIST_HEAD(service_level_list);
+
+int register_service_level(struct service_level *slr)
+{
+	struct service_level *ptr;
+
+	down_write(&service_level_sem);
+	list_for_each_entry(ptr, &service_level_list, list)
+		if (ptr == slr) {
+			up_write(&service_level_sem);
+			return -EEXIST;
+		}
+	list_add_tail(&slr->list, &service_level_list);
+	up_write(&service_level_sem);
+	return 0;
+}
+EXPORT_SYMBOL(register_service_level);
+
+int unregister_service_level(struct service_level *slr)
+{
+	struct service_level *ptr, *next;
+	int rc = -ENOENT;
+
+	down_write(&service_level_sem);
+	list_for_each_entry_safe(ptr, next, &service_level_list, list) {
+		if (ptr != slr)
+			continue;
+		list_del(&ptr->list);
+		rc = 0;
+		break;
+	}
+	up_write(&service_level_sem);
+	return rc;
+}
+EXPORT_SYMBOL(unregister_service_level);
+
+static void *service_level_start(struct seq_file *m, loff_t *pos)
+{
+	down_read(&service_level_sem);
+	return seq_list_start(&service_level_list, *pos);
+}
+
+static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
+{
+	return seq_list_next(p, &service_level_list, pos);
+}
+
+static void service_level_stop(struct seq_file *m, void *p)
+{
+	up_read(&service_level_sem);
+}
+
+static int service_level_show(struct seq_file *m, void *p)
+{
+	struct service_level *slr;
+
+	slr = list_entry(p, struct service_level, list);
+	slr->seq_print(m, slr);
+	return 0;
+}
+
+static const struct seq_operations service_level_seq_ops = {
+	.start		= service_level_start,
+	.next		= service_level_next,
+	.stop		= service_level_stop,
+	.show		= service_level_show
+};
+
+static int service_level_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &service_level_seq_ops);
+}
+
+static const struct file_operations service_level_ops = {
+	.open		= service_level_open,
+	.read		= seq_read,
+	.llseek 	= seq_lseek,
+	.release	= seq_release
+};
+
+static void service_level_vm_print(struct seq_file *m,
+				   struct service_level *slr)
+{
+	char *query_buffer, *str;
+
+	query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
+	if (!query_buffer)
+		return;
+	cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
+	str = strchr(query_buffer, '\n');
+	if (str)
+		*str = 0;
+	seq_printf(m, "VM: %s\n", query_buffer);
+	kfree(query_buffer);
+}
+
+static struct service_level service_level_vm = {
+	.seq_print = service_level_vm_print
+};
+
+static __init int create_proc_service_level(void)
+{
+	proc_create("service_levels", 0, NULL, &service_level_ops);
+	if (MACHINE_IS_VM)
+		register_service_level(&service_level_vm);
+	return 0;
+}
+subsys_initcall(create_proc_service_level);
+
+/*
+ * Bogomips calculation based on cpu capability.
+ */
+int get_cpu_capability(unsigned int *capability)
+{
+	struct sysinfo_1_2_2 *info;
+	int rc;
+
+	info = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+	rc = stsi(info, 1, 2, 2);
+	if (rc == -ENOSYS)
+		goto out;
+	rc = 0;
+	*capability = info->capability;
+out:
+	free_page((unsigned long) info);
+	return rc;
+}
+
+/*
+ * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
+ */
+void s390_adjust_jiffies(void)
+{
+	struct sysinfo_1_2_2 *info;
+	const unsigned int fmil = 0x4b189680;	/* 1e7 as 32-bit float. */
+	FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
+	FP_DECL_EX;
+	unsigned int capability;
+
+	info = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!info)
+		return;
+
+	if (stsi(info, 1, 2, 2) != -ENOSYS) {
+		/*
+		 * Major sigh. The cpu capability encoding is "special".
+		 * If the first 9 bits of info->capability are 0 then it
+		 * is a 32 bit unsigned integer in the range 0 .. 2^23.
+		 * If the first 9 bits are != 0 then it is a 32 bit float.
+		 * In addition a lower value indicates a proportionally
+		 * higher cpu capacity. Bogomips are the other way round.
+		 * To get to a halfway suitable number we divide 1e7
+		 * by the cpu capability number. Yes, that means a floating
+		 * point division .. math-emu here we come :-)
+		 */
+		FP_UNPACK_SP(SA, &fmil);
+		if ((info->capability >> 23) == 0)
+			FP_FROM_INT_S(SB, info->capability, 32, int);
+		else
+			FP_UNPACK_SP(SB, &info->capability);
+		FP_DIV_S(SR, SA, SB);
+		FP_TO_INT_S(capability, SR, 32, 0);
+	} else
+		/*
+		 * Really old machine without stsi block for basic
+		 * cpu information. Report 42.0 bogomips.
+		 */
+		capability = 42;
+	loops_per_jiffy = capability * (500000/HZ);
+	free_page((unsigned long) info);
+}
+
+/*
+ * calibrate the delay loop
+ */
+void __cpuinit calibrate_delay(void)
+{
+	s390_adjust_jiffies();
+	/* Print the good old Bogomips line .. */
+	printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
+	       "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
+	       (loops_per_jiffy/(5000/HZ)) % 100);
+}
Index: quilt-2.6/drivers/s390/Makefile
===================================================================
--- quilt-2.6.orig/drivers/s390/Makefile
+++ quilt-2.6/drivers/s390/Makefile
@@ -2,9 +2,7 @@
 # Makefile for the S/390 specific device drivers
 #
 
-CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
-
-obj-y += s390mach.o sysinfo.o
+obj-y += s390mach.o
 obj-y += cio/ block/ char/ crypto/ net/ scsi/ kvm/
 
 drivers-y += drivers/s390/built-in.o
Index: quilt-2.6/drivers/s390/sysinfo.c
===================================================================
--- quilt-2.6.orig/drivers/s390/sysinfo.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- *  drivers/s390/sysinfo.c
- *
- *  Copyright IBM Corp. 2001, 2008
- *  Author(s): Ulrich Weigand (Ulrich.Weigand@de.ibm.com)
- *	       Martin Schwidefsky <schwidefsky@de.ibm.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <asm/ebcdic.h>
-#include <asm/sysinfo.h>
-#include <asm/cpcmd.h>
-
-/* Sigh, math-emu. Don't ask. */
-#include <asm/sfp-util.h>
-#include <math-emu/soft-fp.h>
-#include <math-emu/single.h>
-
-static inline int stsi_0(void)
-{
-	int rc = stsi (NULL, 0, 0, 0);
-	return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
-}
-
-static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
-{
-	if (stsi(info, 1, 1, 1) == -ENOSYS)
-		return len;
-
-	EBCASC(info->manufacturer, sizeof(info->manufacturer));
-	EBCASC(info->type, sizeof(info->type));
-	EBCASC(info->model, sizeof(info->model));
-	EBCASC(info->sequence, sizeof(info->sequence));
-	EBCASC(info->plant, sizeof(info->plant));
-	EBCASC(info->model_capacity, sizeof(info->model_capacity));
-	EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
-	EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
-	len += sprintf(page + len, "Manufacturer:         %-16.16s\n",
-		       info->manufacturer);
-	len += sprintf(page + len, "Type:                 %-4.4s\n",
-		       info->type);
-	if (info->model[0] != '\0')
-		/*
-		 * Sigh: the model field has been renamed with System z9
-		 * to model_capacity and a new model field has been added
-		 * after the plant field. To avoid confusing older programs
-		 * the "Model:" prints "model_capacity model" or just
-		 * "model_capacity" if the model string is empty .
-		 */
-		len += sprintf(page + len,
-			       "Model:                %-16.16s %-16.16s\n",
-			       info->model_capacity, info->model);
-	else
-		len += sprintf(page + len, "Model:                %-16.16s\n",
-			       info->model_capacity);
-	len += sprintf(page + len, "Sequence Code:        %-16.16s\n",
-		       info->sequence);
-	len += sprintf(page + len, "Plant:                %-4.4s\n",
-		       info->plant);
-	len += sprintf(page + len, "Model Capacity:       %-16.16s %08u\n",
-		       info->model_capacity, *(u32 *) info->model_cap_rating);
-	if (info->model_perm_cap[0] != '\0')
-		len += sprintf(page + len,
-			       "Model Perm. Capacity: %-16.16s %08u\n",
-			       info->model_perm_cap,
-			       *(u32 *) info->model_perm_cap_rating);
-	if (info->model_temp_cap[0] != '\0')
-		len += sprintf(page + len,
-			       "Model Temp. Capacity: %-16.16s %08u\n",
-			       info->model_temp_cap,
-			       *(u32 *) info->model_temp_cap_rating);
-	return len;
-}
-
-#if 0 /* Currently unused */
-static int stsi_1_2_1(struct sysinfo_1_2_1 *info, char *page, int len)
-{
-	if (stsi(info, 1, 2, 1) == -ENOSYS)
-		return len;
-
-	len += sprintf(page + len, "\n");
-	EBCASC(info->sequence, sizeof(info->sequence));
-	EBCASC(info->plant, sizeof(info->plant));
-	len += sprintf(page + len, "Sequence Code of CPU: %-16.16s\n",
-		       info->sequence);
-	len += sprintf(page + len, "Plant of CPU:         %-16.16s\n",
-		       info->plant);
-	return len;
-}
-#endif
-
-static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
-{
-	struct sysinfo_1_2_2_extension *ext;
-	int i;
-
-	if (stsi(info, 1, 2, 2) == -ENOSYS)
-		return len;
-	ext = (struct sysinfo_1_2_2_extension *)
-		((unsigned long) info + info->acc_offset);
-
-	len += sprintf(page + len, "\n");
-	len += sprintf(page + len, "CPUs Total:           %d\n",
-		       info->cpus_total);
-	len += sprintf(page + len, "CPUs Configured:      %d\n",
-		       info->cpus_configured);
-	len += sprintf(page + len, "CPUs Standby:         %d\n",
-		       info->cpus_standby);
-	len += sprintf(page + len, "CPUs Reserved:        %d\n",
-		       info->cpus_reserved);
-
-	if (info->format == 1) {
-		/*
-		 * Sigh 2. According to the specification the alternate
-		 * capability field is a 32 bit floating point number
-		 * if the higher order 8 bits are not zero. Printing
-		 * a floating point number in the kernel is a no-no,
-		 * always print the number as 32 bit unsigned integer.
-		 * The user-space needs to know about the strange
-		 * encoding of the alternate cpu capability.
-		 */
-		len += sprintf(page + len, "Capability:           %u %u\n",
-			       info->capability, ext->alt_capability);
-		for (i = 2; i <= info->cpus_total; i++)
-			len += sprintf(page + len,
-				       "Adjustment %02d-way:    %u %u\n",
-				       i, info->adjustment[i-2],
-				       ext->alt_adjustment[i-2]);
-
-	} else {
-		len += sprintf(page + len, "Capability:           %u\n",
-			       info->capability);
-		for (i = 2; i <= info->cpus_total; i++)
-			len += sprintf(page + len,
-				       "Adjustment %02d-way:    %u\n",
-				       i, info->adjustment[i-2]);
-	}
-
-	if (info->secondary_capability != 0)
-		len += sprintf(page + len, "Secondary Capability: %d\n",
-			       info->secondary_capability);
-
-	return len;
-}
-
-#if 0 /* Currently unused */
-static int stsi_2_2_1(struct sysinfo_2_2_1 *info, char *page, int len)
-{
-	if (stsi(info, 2, 2, 1) == -ENOSYS)
-		return len;
-
-	len += sprintf(page + len, "\n");
-	EBCASC (info->sequence, sizeof(info->sequence));
-	EBCASC (info->plant, sizeof(info->plant));
-	len += sprintf(page + len, "Sequence Code of logical CPU: %-16.16s\n",
-		       info->sequence);
-	len += sprintf(page + len, "Plant of logical CPU: %-16.16s\n",
-		       info->plant);
-	return len;
-}
-#endif
-
-static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len)
-{
-	if (stsi(info, 2, 2, 2) == -ENOSYS)
-		return len;
-
-	EBCASC (info->name, sizeof(info->name));
-
-	len += sprintf(page + len, "\n");
-	len += sprintf(page + len, "LPAR Number:          %d\n",
-		       info->lpar_number);
-
-	len += sprintf(page + len, "LPAR Characteristics: ");
-	if (info->characteristics & LPAR_CHAR_DEDICATED)
-		len += sprintf(page + len, "Dedicated ");
-	if (info->characteristics & LPAR_CHAR_SHARED)
-		len += sprintf(page + len, "Shared ");
-	if (info->characteristics & LPAR_CHAR_LIMITED)
-		len += sprintf(page + len, "Limited ");
-	len += sprintf(page + len, "\n");
-
-	len += sprintf(page + len, "LPAR Name:            %-8.8s\n",
-		       info->name);
-
-	len += sprintf(page + len, "LPAR Adjustment:      %d\n",
-		       info->caf);
-
-	len += sprintf(page + len, "LPAR CPUs Total:      %d\n",
-		       info->cpus_total);
-	len += sprintf(page + len, "LPAR CPUs Configured: %d\n",
-		       info->cpus_configured);
-	len += sprintf(page + len, "LPAR CPUs Standby:    %d\n",
-		       info->cpus_standby);
-	len += sprintf(page + len, "LPAR CPUs Reserved:   %d\n",
-		       info->cpus_reserved);
-	len += sprintf(page + len, "LPAR CPUs Dedicated:  %d\n",
-		       info->cpus_dedicated);
-	len += sprintf(page + len, "LPAR CPUs Shared:     %d\n",
-		       info->cpus_shared);
-	return len;
-}
-
-static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len)
-{
-	int i;
-
-	if (stsi(info, 3, 2, 2) == -ENOSYS)
-		return len;
-	for (i = 0; i < info->count; i++) {
-		EBCASC (info->vm[i].name, sizeof(info->vm[i].name));
-		EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi));
-		len += sprintf(page + len, "\n");
-		len += sprintf(page + len, "VM%02d Name:            %-8.8s\n",
-			       i, info->vm[i].name);
-		len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n",
-			       i, info->vm[i].cpi);
-
-		len += sprintf(page + len, "VM%02d Adjustment:      %d\n",
-			       i, info->vm[i].caf);
-
-		len += sprintf(page + len, "VM%02d CPUs Total:      %d\n",
-			       i, info->vm[i].cpus_total);
-		len += sprintf(page + len, "VM%02d CPUs Configured: %d\n",
-			       i, info->vm[i].cpus_configured);
-		len += sprintf(page + len, "VM%02d CPUs Standby:    %d\n",
-			       i, info->vm[i].cpus_standby);
-		len += sprintf(page + len, "VM%02d CPUs Reserved:   %d\n",
-			       i, info->vm[i].cpus_reserved);
-	}
-	return len;
-}
-
-
-static int proc_read_sysinfo(char *page, char **start,
-                             off_t off, int count,
-                             int *eof, void *data)
-{
-	unsigned long info = get_zeroed_page (GFP_KERNEL);
-	int level, len;
-	
-	if (!info)
-		return 0;
-
-	len = 0;
-	level = stsi_0();
-	if (level >= 1)
-		len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
-
-	if (level >= 1)
-		len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
-
-	if (level >= 2)
-		len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len);
-
-	if (level >= 3)
-		len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len);
-
-	free_page (info);
-        return len;
-}
-
-static __init int create_proc_sysinfo(void)
-{
-	create_proc_read_entry("sysinfo", 0444, NULL,
-			       proc_read_sysinfo, NULL);
-	return 0;
-}
-
-__initcall(create_proc_sysinfo);
-
-/*
- * Service levels interface.
- */
-
-static DECLARE_RWSEM(service_level_sem);
-static LIST_HEAD(service_level_list);
-
-int register_service_level(struct service_level *slr)
-{
-	struct service_level *ptr;
-
-	down_write(&service_level_sem);
-	list_for_each_entry(ptr, &service_level_list, list)
-		if (ptr == slr) {
-			up_write(&service_level_sem);
-			return -EEXIST;
-		}
-	list_add_tail(&slr->list, &service_level_list);
-	up_write(&service_level_sem);
-	return 0;
-}
-EXPORT_SYMBOL(register_service_level);
-
-int unregister_service_level(struct service_level *slr)
-{
-	struct service_level *ptr, *next;
-	int rc = -ENOENT;
-
-	down_write(&service_level_sem);
-	list_for_each_entry_safe(ptr, next, &service_level_list, list) {
-		if (ptr != slr)
-			continue;
-		list_del(&ptr->list);
-		rc = 0;
-		break;
-	}
-	up_write(&service_level_sem);
-	return rc;
-}
-EXPORT_SYMBOL(unregister_service_level);
-
-static void *service_level_start(struct seq_file *m, loff_t *pos)
-{
-	down_read(&service_level_sem);
-	return seq_list_start(&service_level_list, *pos);
-}
-
-static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
-{
-	return seq_list_next(p, &service_level_list, pos);
-}
-
-static void service_level_stop(struct seq_file *m, void *p)
-{
-	up_read(&service_level_sem);
-}
-
-static int service_level_show(struct seq_file *m, void *p)
-{
-	struct service_level *slr;
-
-	slr = list_entry(p, struct service_level, list);
-	slr->seq_print(m, slr);
-	return 0;
-}
-
-static const struct seq_operations service_level_seq_ops = {
-	.start		= service_level_start,
-	.next		= service_level_next,
-	.stop		= service_level_stop,
-	.show		= service_level_show
-};
-
-static int service_level_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &service_level_seq_ops);
-}
-
-static const struct file_operations service_level_ops = {
-	.open		= service_level_open,
-	.read		= seq_read,
-	.llseek 	= seq_lseek,
-	.release	= seq_release
-};
-
-static void service_level_vm_print(struct seq_file *m,
-				   struct service_level *slr)
-{
-	char *query_buffer, *str;
-
-	query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
-	if (!query_buffer)
-		return;
-	cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
-	str = strchr(query_buffer, '\n');
-	if (str)
-		*str = 0;
-	seq_printf(m, "VM: %s\n", query_buffer);
-	kfree(query_buffer);
-}
-
-static struct service_level service_level_vm = {
-	.seq_print = service_level_vm_print
-};
-
-static __init int create_proc_service_level(void)
-{
-	proc_create("service_levels", 0, NULL, &service_level_ops);
-	if (MACHINE_IS_VM)
-		register_service_level(&service_level_vm);
-	return 0;
-}
-
-subsys_initcall(create_proc_service_level);
-
-/*
- * Bogomips calculation based on cpu capability.
- */
-
-int get_cpu_capability(unsigned int *capability)
-{
-	struct sysinfo_1_2_2 *info;
-	int rc;
-
-	info = (void *) get_zeroed_page(GFP_KERNEL);
-	if (!info)
-		return -ENOMEM;
-	rc = stsi(info, 1, 2, 2);
-	if (rc == -ENOSYS)
-		goto out;
-	rc = 0;
-	*capability = info->capability;
-out:
-	free_page((unsigned long) info);
-	return rc;
-}
-
-/*
- * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
- */
-void s390_adjust_jiffies(void)
-{
-	struct sysinfo_1_2_2 *info;
-	const unsigned int fmil = 0x4b189680;	/* 1e7 as 32-bit float. */
-	FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-	FP_DECL_EX;
-	unsigned int capability;
-
-	info = (void *) get_zeroed_page(GFP_KERNEL);
-	if (!info)
-		return;
-
-	if (stsi(info, 1, 2, 2) != -ENOSYS) {
-		/*
-		 * Major sigh. The cpu capability encoding is "special".
-		 * If the first 9 bits of info->capability are 0 then it
-		 * is a 32 bit unsigned integer in the range 0 .. 2^23.
-		 * If the first 9 bits are != 0 then it is a 32 bit float.
-		 * In addition a lower value indicates a proportionally
-		 * higher cpu capacity. Bogomips are the other way round.
-		 * To get to a halfway suitable number we divide 1e7
-		 * by the cpu capability number. Yes, that means a floating
-		 * point division .. math-emu here we come :-)
-		 */
-		FP_UNPACK_SP(SA, &fmil);
-		if ((info->capability >> 23) == 0)
-			FP_FROM_INT_S(SB, info->capability, 32, int);
-		else
-			FP_UNPACK_SP(SB, &info->capability);
-		FP_DIV_S(SR, SA, SB);
-		FP_TO_INT_S(capability, SR, 32, 0);
-	} else
-		/*
-		 * Really old machine without stsi block for basic
-		 * cpu information. Report 42.0 bogomips.
-		 */
-		capability = 42;
-	loops_per_jiffy = capability * (500000/HZ);
-	free_page((unsigned long) info);
-}
-
-/*
- * calibrate the delay loop
- */
-void __cpuinit calibrate_delay(void)
-{
-	s390_adjust_jiffies();
-	/* Print the good old Bogomips line .. */
-	printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
-	       "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
-	       (loops_per_jiffy/(5000/HZ)) % 100);
-}

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.