Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 615 insertions, 0 deletions

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
new file mode 100644
index 000000000000..1d75d6ab6897
--- /dev/null
+++ b/fs/proc/proc_misc.c
@@ -0,0 +1,615 @@
+/*
+ *  linux/fs/proc/proc_misc.c
+ *
+ *  linux/fs/proc/array.c
+ *  Copyright (C) 1992  by Linus Torvalds
+ *  based on ideas by Darren Senn
+ *
+ *  This used to be the part of array.c. See the rest of history and credits
+ *  there. I took this into a separate file and switched the thing to generic
+ *  proc_file_inode_operations, leaving in array.c only per-process stuff.
+ *  Inumbers allocation made dynamic (via create_proc_entry()).  AV, May 1999.
+ *
+ * Changes:
+ * Fulton Green      :  Encapsulated position metric calculations.
+ *			<kernel@FultonGreen.com>
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/tty.h>
+#include <linux/string.h>
+#include <linux/mman.h>
+#include <linux/proc_fs.h>
+#include <linux/ioport.h>
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/mmzone.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <linux/seq_file.h>
+#include <linux/times.h>
+#include <linux/profile.h>
+#include <linux/blkdev.h>
+#include <linux/hugetlb.h>
+#include <linux/jiffies.h>
+#include <linux/sysrq.h>
+#include <linux/vmalloc.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/tlb.h>
+#include <asm/div64.h>
+#include "internal.h"
+
+#define LOAD_INT(x) ((x) >> FSHIFT)
+#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
+/*
+ * Warning: stuff below (imported functions) assumes that its output will fit
+ * into one page. For some of those functions it may be wrong. Moreover, we
+ * have a way to deal with that gracefully. Right now I used straightforward
+ * wrappers, but this needs further analysis wrt potential overflows.
+ */
+extern int get_hardware_list(char *);
+extern int get_stram_list(char *);
+extern int get_chrdev_list(char *);
+extern int get_filesystem_list(char *);
+extern int get_exec_domain_list(char *);
+extern int get_dma_list(char *);
+extern int get_locks_status (char *, char **, off_t, int);
+
+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;
+}
+
+static int loadavg_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int a, b, c;
+	int len;
+
+	a = avenrun[0] + (FIXED_1/200);
+	b = avenrun[1] + (FIXED_1/200);
+	c = avenrun[2] + (FIXED_1/200);
+	len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n",
+		LOAD_INT(a), LOAD_FRAC(a),
+		LOAD_INT(b), LOAD_FRAC(b),
+		LOAD_INT(c), LOAD_FRAC(c),
+		nr_running(), nr_threads, last_pid);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+static int uptime_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	struct timespec uptime;
+	struct timespec idle;
+	int len;
+	cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
+
+	do_posix_clock_monotonic_gettime(&uptime);
+	cputime_to_timespec(idletime, &idle);
+	len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
+			(unsigned long) uptime.tv_sec,
+			(uptime.tv_nsec / (NSEC_PER_SEC / 100)),
+			(unsigned long) idle.tv_sec,
+			(idle.tv_nsec / (NSEC_PER_SEC / 100)));
+
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+static int meminfo_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	struct sysinfo i;
+	int len;
+	struct page_state ps;
+	unsigned long inactive;
+	unsigned long active;
+	unsigned long free;
+	unsigned long committed;
+	unsigned long allowed;
+	struct vmalloc_info vmi;
+
+	get_page_state(&ps);
+	get_zone_counts(&active, &inactive, &free);
+
+/*
+ * display in kilobytes.
+ */
+#define K(x) ((x) << (PAGE_SHIFT - 10))
+	si_meminfo(&i);
+	si_swapinfo(&i);
+	committed = atomic_read(&vm_committed_space);
+	allowed = ((totalram_pages - hugetlb_total_pages())
+		* sysctl_overcommit_ratio / 100) + total_swap_pages;
+
+	get_vmalloc_info(&vmi);
+
+	/*
+	 * Tagged format, for easy grepping and expansion.
+	 */
+	len = sprintf(page,
+		"MemTotal:     %8lu kB\n"
+		"MemFree:      %8lu kB\n"
+		"Buffers:      %8lu kB\n"
+		"Cached:       %8lu kB\n"
+		"SwapCached:   %8lu kB\n"
+		"Active:       %8lu kB\n"
+		"Inactive:     %8lu kB\n"
+		"HighTotal:    %8lu kB\n"
+		"HighFree:     %8lu kB\n"
+		"LowTotal:     %8lu kB\n"
+		"LowFree:      %8lu kB\n"
+		"SwapTotal:    %8lu kB\n"
+		"SwapFree:     %8lu kB\n"
+		"Dirty:        %8lu kB\n"
+		"Writeback:    %8lu kB\n"
+		"Mapped:       %8lu kB\n"
+		"Slab:         %8lu kB\n"
+		"CommitLimit:  %8lu kB\n"
+		"Committed_AS: %8lu kB\n"
+		"PageTables:   %8lu kB\n"
+		"VmallocTotal: %8lu kB\n"
+		"VmallocUsed:  %8lu kB\n"
+		"VmallocChunk: %8lu kB\n",
+		K(i.totalram),
+		K(i.freeram),
+		K(i.bufferram),
+		K(get_page_cache_size()-total_swapcache_pages-i.bufferram),
+		K(total_swapcache_pages),
+		K(active),
+		K(inactive),
+		K(i.totalhigh),
+		K(i.freehigh),
+		K(i.totalram-i.totalhigh),
+		K(i.freeram-i.freehigh),
+		K(i.totalswap),
+		K(i.freeswap),
+		K(ps.nr_dirty),
+		K(ps.nr_writeback),
+		K(ps.nr_mapped),
+		K(ps.nr_slab),
+		K(allowed),
+		K(committed),
+		K(ps.nr_page_table_pages),
+		(unsigned long)VMALLOC_TOTAL >> 10,
+		vmi.used >> 10,
+		vmi.largest_chunk >> 10
+		);
+
+		len += hugetlb_report_meminfo(page + len);
+
+	return proc_calc_metrics(page, start, off, count, eof, len);
+#undef K
+}
+
+extern struct seq_operations fragmentation_op;
+static int fragmentation_open(struct inode *inode, struct file *file)
+{
+	(void)inode;
+	return seq_open(file, &fragmentation_op);
+}
+
+static struct file_operations fragmentation_file_operations = {
+	.open		= fragmentation_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static int version_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len;
+
+	strcpy(page, linux_banner);
+	len = strlen(page);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+extern struct seq_operations cpuinfo_op;
+static int cpuinfo_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &cpuinfo_op);
+}
+static struct file_operations proc_cpuinfo_operations = {
+	.open		= cpuinfo_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+extern struct seq_operations vmstat_op;
+static int vmstat_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &vmstat_op);
+}
+static struct file_operations proc_vmstat_file_operations = {
+	.open		= vmstat_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+#ifdef CONFIG_PROC_HARDWARE
+static int hardware_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = get_hardware_list(page);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+#endif
+
+#ifdef CONFIG_STRAM_PROC
+static int stram_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = get_stram_list(page);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+#endif
+
+extern struct seq_operations partitions_op;
+static int partitions_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &partitions_op);
+}
+static struct file_operations proc_partitions_operations = {
+	.open		= partitions_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+extern struct seq_operations diskstats_op;
+static int diskstats_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &diskstats_op);
+}
+static struct file_operations proc_diskstats_operations = {
+	.open		= diskstats_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+#ifdef CONFIG_MODULES
+extern struct seq_operations modules_op;
+static int modules_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &modules_op);
+}
+static struct file_operations proc_modules_operations = {
+	.open		= modules_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+#endif
+
+extern struct seq_operations slabinfo_op;
+extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
+static int slabinfo_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &slabinfo_op);
+}
+static struct file_operations proc_slabinfo_operations = {
+	.open		= slabinfo_open,
+	.read		= seq_read,
+	.write		= slabinfo_write,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static int show_stat(struct seq_file *p, void *v)
+{
+	int i;
+	unsigned long jif;
+	cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
+	u64 sum = 0;
+
+	user = nice = system = idle = iowait =
+		irq = softirq = steal = cputime64_zero;
+	jif = - wall_to_monotonic.tv_sec;
+	if (wall_to_monotonic.tv_nsec)
+		--jif;
+
+	for_each_cpu(i) {
+		int j;
+
+		user = cputime64_add(user, kstat_cpu(i).cpustat.user);
+		nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
+		system = cputime64_add(system, kstat_cpu(i).cpustat.system);
+		idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
+		iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
+		irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
+		softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
+		steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
+		for (j = 0 ; j < NR_IRQS ; j++)
+			sum += kstat_cpu(i).irqs[j];
+	}
+
+	seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
+		(unsigned long long)cputime64_to_clock_t(user),
+		(unsigned long long)cputime64_to_clock_t(nice),
+		(unsigned long long)cputime64_to_clock_t(system),
+		(unsigned long long)cputime64_to_clock_t(idle),
+		(unsigned long long)cputime64_to_clock_t(iowait),
+		(unsigned long long)cputime64_to_clock_t(irq),
+		(unsigned long long)cputime64_to_clock_t(softirq),
+		(unsigned long long)cputime64_to_clock_t(steal));
+	for_each_online_cpu(i) {
+
+		/* Copy values here to work around gcc-2.95.3, gcc-2.96 */
+		user = kstat_cpu(i).cpustat.user;
+		nice = kstat_cpu(i).cpustat.nice;
+		system = kstat_cpu(i).cpustat.system;
+		idle = kstat_cpu(i).cpustat.idle;
+		iowait = kstat_cpu(i).cpustat.iowait;
+		irq = kstat_cpu(i).cpustat.irq;
+		softirq = kstat_cpu(i).cpustat.softirq;
+		steal = kstat_cpu(i).cpustat.steal;
+		seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
+			i,
+			(unsigned long long)cputime64_to_clock_t(user),
+			(unsigned long long)cputime64_to_clock_t(nice),
+			(unsigned long long)cputime64_to_clock_t(system),
+			(unsigned long long)cputime64_to_clock_t(idle),
+			(unsigned long long)cputime64_to_clock_t(iowait),
+			(unsigned long long)cputime64_to_clock_t(irq),
+			(unsigned long long)cputime64_to_clock_t(softirq),
+			(unsigned long long)cputime64_to_clock_t(steal));
+	}
+	seq_printf(p, "intr %llu", (unsigned long long)sum);
+
+#if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA)
+	for (i = 0; i < NR_IRQS; i++)
+		seq_printf(p, " %u", kstat_irqs(i));
+#endif
+
+	seq_printf(p,
+		"\nctxt %llu\n"
+		"btime %lu\n"
+		"processes %lu\n"
+		"procs_running %lu\n"
+		"procs_blocked %lu\n",
+		nr_context_switches(),
+		(unsigned long)jif,
+		total_forks,
+		nr_running(),
+		nr_iowait());
+
+	return 0;
+}
+
+static int stat_open(struct inode *inode, struct file *file)
+{
+	unsigned size = 4096 * (1 + num_possible_cpus() / 32);
+	char *buf;
+	struct seq_file *m;
+	int res;
+
+	/* don't ask for more than the kmalloc() max size, currently 128 KB */
+	if (size > 128 * 1024)
+		size = 128 * 1024;
+	buf = kmalloc(size, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	res = single_open(file, show_stat, NULL);
+	if (!res) {
+		m = file->private_data;
+		m->buf = buf;
+		m->size = size;
+	} else
+		kfree(buf);
+	return res;
+}
+static struct file_operations proc_stat_operations = {
+	.open		= stat_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int devices_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = get_chrdev_list(page);
+	len += get_blkdev_list(page+len);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+/*
+ * /proc/interrupts
+ */
+static void *int_seq_start(struct seq_file *f, loff_t *pos)
+{
+	return (*pos <= NR_IRQS) ? pos : NULL;
+}
+
+static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
+{
+	(*pos)++;
+	if (*pos > NR_IRQS)
+		return NULL;
+	return pos;
+}
+
+static void int_seq_stop(struct seq_file *f, void *v)
+{
+	/* Nothing to do */
+}
+
+
+extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
+static struct seq_operations int_seq_ops = {
+	.start = int_seq_start,
+	.next  = int_seq_next,
+	.stop  = int_seq_stop,
+	.show  = show_interrupts
+};
+
+static int interrupts_open(struct inode *inode, struct file *filp)
+{
+	return seq_open(filp, &int_seq_ops);
+}
+
+static struct file_operations proc_interrupts_operations = {
+	.open		= interrupts_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static int filesystems_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = get_filesystem_list(page);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+static int cmdline_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len;
+
+	len = sprintf(page, "%s\n", saved_command_line);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+static int locks_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = get_locks_status(page, start, off, count);
+
+	if (len < count)
+		*eof = 1;
+	return len;
+}
+
+static int execdomains_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = get_exec_domain_list(page);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
+#ifdef CONFIG_MAGIC_SYSRQ
+/*
+ * writing 'C' to /proc/sysrq-trigger is like sysrq-C
+ */
+static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
+				   size_t count, loff_t *ppos)
+{
+	if (count) {
+		char c;
+
+		if (get_user(c, buf))
+			return -EFAULT;
+		__handle_sysrq(c, NULL, NULL, 0);
+	}
+	return count;
+}
+
+static struct file_operations proc_sysrq_trigger_operations = {
+	.write		= write_sysrq_trigger,
+};
+#endif
+
+struct proc_dir_entry *proc_root_kcore;
+
+void create_seq_entry(char *name, mode_t mode, struct file_operations *f)
+{
+	struct proc_dir_entry *entry;
+	entry = create_proc_entry(name, mode, NULL);
+	if (entry)
+		entry->proc_fops = f;
+}
+
+void __init proc_misc_init(void)
+{
+	struct proc_dir_entry *entry;
+	static struct {
+		char *name;
+		int (*read_proc)(char*,char**,off_t,int,int*,void*);
+	} *p, simple_ones[] = {
+		{"loadavg",     loadavg_read_proc},
+		{"uptime",	uptime_read_proc},
+		{"meminfo",	meminfo_read_proc},
+		{"version",	version_read_proc},
+#ifdef CONFIG_PROC_HARDWARE
+		{"hardware",	hardware_read_proc},
+#endif
+#ifdef CONFIG_STRAM_PROC
+		{"stram",	stram_read_proc},
+#endif
+		{"devices",	devices_read_proc},
+		{"filesystems",	filesystems_read_proc},
+		{"cmdline",	cmdline_read_proc},
+		{"locks",	locks_read_proc},
+		{"execdomains",	execdomains_read_proc},
+		{NULL,}
+	};
+	for (p = simple_ones; p->name; p++)
+		create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
+
+	proc_symlink("mounts", NULL, "self/mounts");
+
+	/* And now for trickier ones */
+	entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
+	if (entry)
+		entry->proc_fops = &proc_kmsg_operations;
+	create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
+	create_seq_entry("partitions", 0, &proc_partitions_operations);
+	create_seq_entry("stat", 0, &proc_stat_operations);
+	create_seq_entry("interrupts", 0, &proc_interrupts_operations);
+	create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
+	create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
+	create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
+	create_seq_entry("diskstats", 0, &proc_diskstats_operations);
+#ifdef CONFIG_MODULES
+	create_seq_entry("modules", 0, &proc_modules_operations);
+#endif
+#ifdef CONFIG_SCHEDSTATS
+	create_seq_entry("schedstat", 0, &proc_schedstat_operations);
+#endif
+#ifdef CONFIG_PROC_KCORE
+	proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
+	if (proc_root_kcore) {
+		proc_root_kcore->proc_fops = &proc_kcore_operations;
+		proc_root_kcore->size =
+				(size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
+	}
+#endif
+#ifdef CONFIG_MAGIC_SYSRQ
+	entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
+	if (entry)
+		entry->proc_fops = &proc_sysrq_trigger_operations;
+#endif
+#ifdef CONFIG_PPC32
+	{
+		extern struct file_operations ppc_htab_operations;
+		entry = create_proc_entry("ppc_htab", S_IRUGO|S_IWUSR, NULL);
+		if (entry)
+			entry->proc_fops = &ppc_htab_operations;
+	}
+#endif
+}