6 files changed, 65 insertions, 151 deletions

diff --git a/arch/ia64/sn/kernel/sn2/Makefile b/arch/ia64/sn/kernel/sn2/Makefile
index 08e6565dc90..3d09108d427 100644
--- a/arch/ia64/sn/kernel/sn2/Makefile
+++ b/arch/ia64/sn/kernel/sn2/Makefile
@@ -9,7 +9,7 @@
 # sn2 specific kernel files
 #
 
-EXTRA_CFLAGS += -Iarch/ia64/sn/include
+ccflags-y := -Iarch/ia64/sn/include
 
 obj-y += cache.o io.o ptc_deadlock.o sn2_smp.o sn_proc_fs.o \
 	 prominfo_proc.o timer.o timer_interrupt.o sn_hwperf.o
diff --git a/arch/ia64/sn/kernel/sn2/prominfo_proc.c b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
index e6332881864..ec4de2b0965 100644
--- a/arch/ia64/sn/kernel/sn2/prominfo_proc.c
+++ b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
@@ -11,8 +11,8 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/nodemask.h>
-#include <asm/system.h>
 #include <asm/io.h>
 #include <asm/sn/sn_sal.h>
 #include <asm/sn/sn_cpuid.h>
@@ -102,18 +102,18 @@ get_fit_entry(unsigned long nasid, int index, unsigned long *fentry,
 /*
  * These two routines display the FIT table for each node.
  */
-static int dump_fit_entry(char *page, unsigned long *fentry)
+static void dump_fit_entry(struct seq_file *m, unsigned long *fentry)
 {
 	unsigned type;
 
 	type = FIT_TYPE(fentry[1]);
-	return sprintf(page, "%02x %-25s %x.%02x %016lx %u\n",
-		       type,
-		       fit_type_name(type),
-		       FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]),
-		       fentry[0],
-		       /* mult by sixteen to get size in bytes */
-		       (unsigned)(fentry[1] & 0xffffff) * 16);
+	seq_printf(m, "%02x %-25s %x.%02x %016lx %u\n",
+		   type,
+		   fit_type_name(type),
+		   FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]),
+		   fentry[0],
+		   /* mult by sixteen to get size in bytes */
+		   (unsigned)(fentry[1] & 0xffffff) * 16);
 }
 
 
@@ -125,31 +125,39 @@ static int dump_fit_entry(char *page, unsigned long *fentry)
  * OK except for 4kB pages (and no one is going to do that on SN
  * anyway).
  */
-static int
-dump_fit(char *page, unsigned long nasid)
+static int proc_fit_show(struct seq_file *m, void *v)
 {
+	unsigned long nasid = (unsigned long)m->private;
 	unsigned long fentry[2];
 	int index;
-	char *p;
 
-	p = page;
 	for (index=0;;index++) {
 		BUG_ON(index * 60 > PAGE_SIZE);
 		if (get_fit_entry(nasid, index, fentry, NULL, 0))
 			break;
-		p += dump_fit_entry(p, fentry);
+		dump_fit_entry(m, fentry);
 	}
+	return 0;
+}
 
-	return p - page;
+static int proc_fit_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, proc_fit_show, PDE_DATA(inode));
 }
 
-static int
-dump_version(char *page, unsigned long nasid)
+static const struct file_operations proc_fit_fops = {
+	.open		= proc_fit_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int proc_version_show(struct seq_file *m, void *v)
 {
+	unsigned long nasid = (unsigned long)m->private;
 	unsigned long fentry[2];
 	char banner[128];
 	int index;
-	int len;
 
 	for (index = 0; ; index++) {
 		if (get_fit_entry(nasid, index, fentry, banner,
@@ -159,56 +167,24 @@ dump_version(char *page, unsigned long nasid)
 			break;
 	}
 
-	len = sprintf(page, "%x.%02x\n", FIT_MAJOR(fentry[1]),
-		      FIT_MINOR(fentry[1]));
-	page += len;
+	seq_printf(m, "%x.%02x\n", FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]));
 
 	if (banner[0])
-		len += snprintf(page, PAGE_SIZE-len, "%s\n", banner);
-
-	return len;
-}
-
-/* same as in proc_misc.c */
-static int
-proc_calc_metrics(char *page, char **start, off_t off, int count, int *eof,
-		  int len)
-{
-	if (len <= off + count)
-		*eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len > count)
-		len = count;
-	if (len < 0)
-		len = 0;
-	return len;
+		seq_printf(m, "%s\n", banner);
+	return 0;
 }
 
-static int
-read_version_entry(char *page, char **start, off_t off, int count, int *eof,
-		   void *data)
+static int proc_version_open(struct inode *inode, struct file *file)
 {
-	int len;
-
-	/* data holds the NASID of the node */
-	len = dump_version(page, (unsigned long)data);
-	len = proc_calc_metrics(page, start, off, count, eof, len);
-	return len;
+	return single_open(file, proc_version_show, PDE_DATA(inode));
 }
 
-static int
-read_fit_entry(char *page, char **start, off_t off, int count, int *eof,
-	       void *data)
-{
-	int len;
-
-	/* data holds the NASID of the node */
-	len = dump_fit(page, (unsigned long)data);
-	len = proc_calc_metrics(page, start, off, count, eof, len);
-
-	return len;
-}
+static const struct file_operations proc_version_fops = {
+	.open		= proc_version_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 /* module entry points */
 int __init prominfo_init(void);
@@ -217,58 +193,39 @@ void __exit prominfo_exit(void);
 module_init(prominfo_init);
 module_exit(prominfo_exit);
 
-static struct proc_dir_entry **proc_entries;
-static struct proc_dir_entry *sgi_prominfo_entry;
-
 #define NODE_NAME_LEN 11
 
 int __init prominfo_init(void)
 {
-	struct proc_dir_entry **entp;
+	struct proc_dir_entry *sgi_prominfo_entry;
 	cnodeid_t cnodeid;
-	unsigned long nasid;
-	int size;
-	char name[NODE_NAME_LEN];
 
 	if (!ia64_platform_is("sn2"))
 		return 0;
 
-	size = num_online_nodes() * sizeof(struct proc_dir_entry *);
-	proc_entries = kzalloc(size, GFP_KERNEL);
-	if (!proc_entries)
-		return -ENOMEM;
-
 	sgi_prominfo_entry = proc_mkdir("sgi_prominfo", NULL);
+	if (!sgi_prominfo_entry)
+		return -ENOMEM;
 
-	entp = proc_entries;
 	for_each_online_node(cnodeid) {
+		struct proc_dir_entry *dir;
+		unsigned long nasid;
+		char name[NODE_NAME_LEN];
+
 		sprintf(name, "node%d", cnodeid);
-		*entp = proc_mkdir(name, sgi_prominfo_entry);
+		dir = proc_mkdir(name, sgi_prominfo_entry);
+		if (!dir)
+			continue;
 		nasid = cnodeid_to_nasid(cnodeid);
-		create_proc_read_entry("fit", 0, *entp, read_fit_entry,
-					   (void *)nasid);
-		create_proc_read_entry("version", 0, *entp,
-					   read_version_entry, (void *)nasid);
-		entp++;
+		proc_create_data("fit", 0, dir,
+				 &proc_fit_fops, (void *)nasid);
+		proc_create_data("version", 0, dir,
+				 &proc_version_fops, (void *)nasid);
 	}
-
 	return 0;
 }
 
 void __exit prominfo_exit(void)
 {
-	struct proc_dir_entry **entp;
-	unsigned int cnodeid;
-	char name[NODE_NAME_LEN];
-
-	entp = proc_entries;
-	for_each_online_node(cnodeid) {
-		remove_proc_entry("fit", *entp);
-		remove_proc_entry("version", *entp);
-		sprintf(name, "node%d", cnodeid);
-		remove_proc_entry(name, sgi_prominfo_entry);
-		entp++;
-	}
-	remove_proc_entry("sgi_prominfo", NULL);
-	kfree(proc_entries);
+	remove_proc_subtree("sgi_prominfo", NULL);
 }
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index e884ba4e031..68c84541162 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -26,7 +26,6 @@
 #include <asm/processor.h>
 #include <asm/irq.h>
 #include <asm/sal.h>
-#include <asm/system.h>
 #include <asm/delay.h>
 #include <asm/io.h>
 #include <asm/smp.h>
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
index 30862c0358c..b9992571c03 100644
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -25,6 +25,7 @@
 
 #include <linux/fs.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <linux/vmalloc.h>
 #include <linux/seq_file.h>
 #include <linux/miscdevice.h>
@@ -615,11 +616,15 @@ static int sn_hwperf_op_cpu(struct sn_hwperf_op_info *op_info)
 		}
 	}
 
-	if (cpu == SN_HWPERF_ARG_ANY_CPU || cpu == get_cpu()) {
-		/* don't care, or already on correct cpu */
+	if (cpu == SN_HWPERF_ARG_ANY_CPU) {
+		/* don't care which cpu */
 		sn_hwperf_call_sal(op_info);
-	}
-	else {
+	} else if (cpu == get_cpu()) {
+		/* already on correct cpu */
+		sn_hwperf_call_sal(op_info);
+		put_cpu();
+	} else {
+		put_cpu();
 		if (use_ipi) {
 			/* use an interprocessor interrupt to call SAL */
 			smp_call_function_single(cpu, sn_hwperf_call_sal,
@@ -972,7 +977,7 @@ int sn_hwperf_get_nearest_node(cnodeid_t node,
 	return e;
 }
 
-static int __devinit sn_hwperf_misc_register_init(void)
+static int sn_hwperf_misc_register_init(void)
 {
 	int e;
 
diff --git a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
index c76d8dc3aea..7aab87f4806 100644
--- a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
+++ b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
@@ -45,38 +45,6 @@ static int licenseID_open(struct inode *inode, struct file *file)
 	return single_open(file, licenseID_show, NULL);
 }
 
-/*
- * Enable forced interrupt by default.
- * When set, the sn interrupt handler writes the force interrupt register on
- * the bridge chip.  The hardware will then send an interrupt message if the
- * interrupt line is active.  This mimics a level sensitive interrupt.
- */
-extern int sn_force_interrupt_flag;
-
-static int sn_force_interrupt_show(struct seq_file *s, void *p)
-{
-	seq_printf(s, "Force interrupt is %s\n",
-		sn_force_interrupt_flag ? "enabled" : "disabled");
-	return 0;
-}
-
-static ssize_t sn_force_interrupt_write_proc(struct file *file,
-		const char __user *buffer, size_t count, loff_t *data)
-{
-	char val;
-
-	if (copy_from_user(&val, buffer, 1))
-		return -EFAULT;
-
-	sn_force_interrupt_flag = (val == '0') ? 0 : 1;
-	return count;
-}
-
-static int sn_force_interrupt_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, sn_force_interrupt_show, NULL);
-}
-
 static int coherence_id_show(struct seq_file *s, void *p)
 {
 	seq_printf(s, "%d\n", partition_coherence_id());
@@ -114,14 +82,6 @@ static const struct file_operations proc_license_id_fops = {
 	.release	= single_release,
 };
 
-static const struct file_operations proc_sn_force_intr_fops = {
-	.open		= sn_force_interrupt_open,
-	.read		= seq_read,
-	.write		= sn_force_interrupt_write_proc,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
 static const struct file_operations proc_coherence_id_fops = {
 	.open		= coherence_id_open,
 	.read		= seq_read,
@@ -149,8 +109,6 @@ void register_sn_procfs(void)
 	proc_create("system_serial_number", 0444, sgi_proc_dir,
 		    &proc_system_sn_fops);
 	proc_create("licenseID", 0444, sgi_proc_dir, &proc_license_id_fops);
-	proc_create("sn_force_interrupt", 0644, sgi_proc_dir,
-		    &proc_sn_force_intr_fops);
 	proc_create("coherence_id", 0444, sgi_proc_dir,
 		    &proc_coherence_id_fops);
 	proc_create("sn_topology", 0444, sgi_proc_dir, &proc_sn_topo_fops);
diff --git a/arch/ia64/sn/kernel/sn2/timer.c b/arch/ia64/sn/kernel/sn2/timer.c
index 21d6f09e344..abab8f99e91 100644
--- a/arch/ia64/sn/kernel/sn2/timer.c
+++ b/arch/ia64/sn/kernel/sn2/timer.c
@@ -14,7 +14,6 @@
 #include <linux/clocksource.h>
 
 #include <asm/hw_irq.h>
-#include <asm/system.h>
 #include <asm/timex.h>
 
 #include <asm/sn/leds.h>
@@ -33,8 +32,6 @@ static struct clocksource clocksource_sn2 = {
         .rating         = 450,
         .read           = read_sn2,
         .mask           = (1LL << 55) - 1,
-        .mult           = 0,
-        .shift          = 10,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -56,10 +53,8 @@ ia64_sn_udelay (unsigned long usecs)
 
 void __init sn_timer_init(void)
 {
-	clocksource_sn2.fsys_mmio = RTC_COUNTER_ADDR;
-	clocksource_sn2.mult = clocksource_hz2mult(sn_rtc_cycles_per_second,
-							clocksource_sn2.shift);
-	clocksource_register(&clocksource_sn2);
+	clocksource_sn2.archdata.fsys_mmio = RTC_COUNTER_ADDR;
+	clocksource_register_hz(&clocksource_sn2, sn_rtc_cycles_per_second);
 
 	ia64_udelay = &ia64_sn_udelay;
 }