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
+}