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-rw-r--r--fs/proc/proc_misc.c933
1 files changed, 0 insertions, 933 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
deleted file mode 100644
index 7ea52c7..0000000
--- a/fs/proc/proc_misc.c
+++ /dev/null
@@ -1,933 +0,0 @@
-/*
- * 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/fs.h>
-#include <linux/tty.h>
-#include <linux/string.h>
-#include <linux/mman.h>
-#include <linux/quicklist.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/mmzone.h>
-#include <linux/pagemap.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/swap.h>
-#include <linux/slab.h>
-#include <linux/genhd.h>
-#include <linux/smp.h>
-#include <linux/signal.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/seq_file.h>
-#include <linux/times.h>
-#include <linux/profile.h>
-#include <linux/utsname.h>
-#include <linux/blkdev.h>
-#include <linux/hugetlb.h>
-#include <linux/jiffies.h>
-#include <linux/vmalloc.h>
-#include <linux/crash_dump.h>
-#include <linux/pid_namespace.h>
-#include <linux/bootmem.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_exec_domain_list(char *);
-
-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;
- unsigned long seq;
-
- do {
- seq = read_seqbegin(&xtime_lock);
- a = avenrun[0] + (FIXED_1/200);
- b = avenrun[1] + (FIXED_1/200);
- c = avenrun[2] + (FIXED_1/200);
- } while (read_seqretry(&xtime_lock, seq));
-
- 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,
- task_active_pid_ns(current)->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);
- monotonic_to_bootbased(&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);
-}
-
-int __attribute__((weak)) arch_report_meminfo(char *page)
-{
- return 0;
-}
-
-static int meminfo_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct sysinfo i;
- int len;
- unsigned long committed;
- unsigned long allowed;
- struct vmalloc_info vmi;
- long cached;
- unsigned long pages[NR_LRU_LISTS];
- int lru;
-
-/*
- * display in kilobytes.
- */
-#define K(x) ((x) << (PAGE_SHIFT - 10))
- si_meminfo(&i);
- si_swapinfo(&i);
- committed = atomic_long_read(&vm_committed_space);
- allowed = ((totalram_pages - hugetlb_total_pages())
- * sysctl_overcommit_ratio / 100) + total_swap_pages;
-
- cached = global_page_state(NR_FILE_PAGES) -
- total_swapcache_pages - i.bufferram;
- if (cached < 0)
- cached = 0;
-
- get_vmalloc_info(&vmi);
-
- for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
- pages[lru] = global_page_state(NR_LRU_BASE + lru);
-
- /*
- * 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"
- "Active(anon): %8lu kB\n"
- "Inactive(anon): %8lu kB\n"
- "Active(file): %8lu kB\n"
- "Inactive(file): %8lu kB\n"
-#ifdef CONFIG_UNEVICTABLE_LRU
- "Unevictable: %8lu kB\n"
- "Mlocked: %8lu kB\n"
-#endif
-#ifdef CONFIG_HIGHMEM
- "HighTotal: %8lu kB\n"
- "HighFree: %8lu kB\n"
- "LowTotal: %8lu kB\n"
- "LowFree: %8lu kB\n"
-#endif
- "SwapTotal: %8lu kB\n"
- "SwapFree: %8lu kB\n"
- "Dirty: %8lu kB\n"
- "Writeback: %8lu kB\n"
- "AnonPages: %8lu kB\n"
- "Mapped: %8lu kB\n"
- "Slab: %8lu kB\n"
- "SReclaimable: %8lu kB\n"
- "SUnreclaim: %8lu kB\n"
- "PageTables: %8lu kB\n"
-#ifdef CONFIG_QUICKLIST
- "Quicklists: %8lu kB\n"
-#endif
- "NFS_Unstable: %8lu kB\n"
- "Bounce: %8lu kB\n"
- "WritebackTmp: %8lu kB\n"
- "CommitLimit: %8lu kB\n"
- "Committed_AS: %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(cached),
- K(total_swapcache_pages),
- K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]),
- K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]),
- K(pages[LRU_ACTIVE_ANON]),
- K(pages[LRU_INACTIVE_ANON]),
- K(pages[LRU_ACTIVE_FILE]),
- K(pages[LRU_INACTIVE_FILE]),
-#ifdef CONFIG_UNEVICTABLE_LRU
- K(pages[LRU_UNEVICTABLE]),
- K(global_page_state(NR_MLOCK)),
-#endif
-#ifdef CONFIG_HIGHMEM
- K(i.totalhigh),
- K(i.freehigh),
- K(i.totalram-i.totalhigh),
- K(i.freeram-i.freehigh),
-#endif
- K(i.totalswap),
- K(i.freeswap),
- K(global_page_state(NR_FILE_DIRTY)),
- K(global_page_state(NR_WRITEBACK)),
- K(global_page_state(NR_ANON_PAGES)),
- K(global_page_state(NR_FILE_MAPPED)),
- K(global_page_state(NR_SLAB_RECLAIMABLE) +
- global_page_state(NR_SLAB_UNRECLAIMABLE)),
- K(global_page_state(NR_SLAB_RECLAIMABLE)),
- K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
- K(global_page_state(NR_PAGETABLE)),
-#ifdef CONFIG_QUICKLIST
- K(quicklist_total_size()),
-#endif
- K(global_page_state(NR_UNSTABLE_NFS)),
- K(global_page_state(NR_BOUNCE)),
- K(global_page_state(NR_WRITEBACK_TEMP)),
- K(allowed),
- K(committed),
- (unsigned long)VMALLOC_TOTAL >> 10,
- vmi.used >> 10,
- vmi.largest_chunk >> 10
- );
-
- len += hugetlb_report_meminfo(page + len);
-
- len += arch_report_meminfo(page + len);
-
- return proc_calc_metrics(page, start, off, count, eof, len);
-#undef K
-}
-
-static int fragmentation_open(struct inode *inode, struct file *file)
-{
- (void)inode;
- return seq_open(file, &fragmentation_op);
-}
-
-static const struct file_operations fragmentation_file_operations = {
- .open = fragmentation_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static int pagetypeinfo_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &pagetypeinfo_op);
-}
-
-static const struct file_operations pagetypeinfo_file_ops = {
- .open = pagetypeinfo_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static int zoneinfo_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &zoneinfo_op);
-}
-
-static const struct file_operations proc_zoneinfo_file_operations = {
- .open = zoneinfo_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;
-
- len = snprintf(page, PAGE_SIZE, linux_proc_banner,
- utsname()->sysname,
- utsname()->release,
- utsname()->version);
- return proc_calc_metrics(page, start, off, count, eof, len);
-}
-
-extern const struct seq_operations cpuinfo_op;
-static int cpuinfo_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &cpuinfo_op);
-}
-
-static const struct file_operations proc_cpuinfo_operations = {
- .open = cpuinfo_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static int devinfo_show(struct seq_file *f, void *v)
-{
- int i = *(loff_t *) v;
-
- if (i < CHRDEV_MAJOR_HASH_SIZE) {
- if (i == 0)
- seq_printf(f, "Character devices:\n");
- chrdev_show(f, i);
- }
-#ifdef CONFIG_BLOCK
- else {
- i -= CHRDEV_MAJOR_HASH_SIZE;
- if (i == 0)
- seq_printf(f, "\nBlock devices:\n");
- blkdev_show(f, i);
- }
-#endif
- return 0;
-}
-
-static void *devinfo_start(struct seq_file *f, loff_t *pos)
-{
- if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
- return pos;
- return NULL;
-}
-
-static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
-{
- (*pos)++;
- if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
- return NULL;
- return pos;
-}
-
-static void devinfo_stop(struct seq_file *f, void *v)
-{
- /* Nothing to do */
-}
-
-static const struct seq_operations devinfo_ops = {
- .start = devinfo_start,
- .next = devinfo_next,
- .stop = devinfo_stop,
- .show = devinfo_show
-};
-
-static int devinfo_open(struct inode *inode, struct file *filp)
-{
- return seq_open(filp, &devinfo_ops);
-}
-
-static const struct file_operations proc_devinfo_operations = {
- .open = devinfo_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static int vmstat_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &vmstat_op);
-}
-static const 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
-
-#ifdef CONFIG_BLOCK
-static int partitions_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &partitions_op);
-}
-static const struct file_operations proc_partitions_operations = {
- .open = partitions_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static int diskstats_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &diskstats_op);
-}
-static const struct file_operations proc_diskstats_operations = {
- .open = diskstats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-#endif
-
-#ifdef CONFIG_MODULES
-extern const struct seq_operations modules_op;
-static int modules_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &modules_op);
-}
-static const struct file_operations proc_modules_operations = {
- .open = modules_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-#endif
-
-#ifdef CONFIG_SLABINFO
-static int slabinfo_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &slabinfo_op);
-}
-static const struct file_operations proc_slabinfo_operations = {
- .open = slabinfo_open,
- .read = seq_read,
- .write = slabinfo_write,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-#ifdef CONFIG_DEBUG_SLAB_LEAK
-extern const struct seq_operations slabstats_op;
-static int slabstats_open(struct inode *inode, struct file *file)
-{
- unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
- int ret = -ENOMEM;
- if (n) {
- ret = seq_open(file, &slabstats_op);
- if (!ret) {
- struct seq_file *m = file->private_data;
- *n = PAGE_SIZE / (2 * sizeof(unsigned long));
- m->private = n;
- n = NULL;
- }
- kfree(n);
- }
- return ret;
-}
-
-static const struct file_operations proc_slabstats_operations = {
- .open = slabstats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release_private,
-};
-#endif
-#endif
-
-#ifdef CONFIG_MMU
-static int vmalloc_open(struct inode *inode, struct file *file)
-{
- unsigned int *ptr = NULL;
- int ret;
-
- if (NUMA_BUILD)
- ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL);
- ret = seq_open(file, &vmalloc_op);
- if (!ret) {
- struct seq_file *m = file->private_data;
- m->private = ptr;
- } else
- kfree(ptr);
- return ret;
-}
-
-static const struct file_operations proc_vmalloc_operations = {
- .open = vmalloc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release_private,
-};
-#endif
-
-#ifndef arch_irq_stat_cpu
-#define arch_irq_stat_cpu(cpu) 0
-#endif
-#ifndef arch_irq_stat
-#define arch_irq_stat() 0
-#endif
-
-static int show_stat(struct seq_file *p, void *v)
-{
- int i, j;
- unsigned long jif;
- cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
- cputime64_t guest;
- u64 sum = 0;
- struct timespec boottime;
- unsigned int per_irq_sum;
-
- user = nice = system = idle = iowait =
- irq = softirq = steal = cputime64_zero;
- guest = cputime64_zero;
- getboottime(&boottime);
- jif = boottime.tv_sec;
-
- for_each_possible_cpu(i) {
- 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);
- guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
-
- for_each_irq_nr(j)
- sum += kstat_irqs_cpu(j, i);
-
- sum += arch_irq_stat_cpu(i);
- }
- sum += arch_irq_stat();
-
- seq_printf(p, "cpu %llu %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),
- (unsigned long long)cputime64_to_clock_t(guest));
- 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;
- guest = kstat_cpu(i).cpustat.guest;
- seq_printf(p,
- "cpu%d %llu %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),
- (unsigned long long)cputime64_to_clock_t(guest));
- }
- seq_printf(p, "intr %llu", (unsigned long long)sum);
-
- /* sum again ? it could be updated? */
- for_each_irq_nr(j) {
- per_irq_sum = 0;
-
- for_each_possible_cpu(i)
- per_irq_sum += kstat_irqs_cpu(j, i);
-
- seq_printf(p, " %u", per_irq_sum);
- }
-
- 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 const struct file_operations proc_stat_operations = {
- .open = stat_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-/*
- * /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)++;
- return (*pos <= nr_irqs) ? pos : NULL;
-}
-
-static void int_seq_stop(struct seq_file *f, void *v)
-{
- /* Nothing to do */
-}
-
-static const 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 const 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);
-}
-
-#ifdef CONFIG_FILE_LOCKING
-static int locks_open(struct inode *inode, struct file *filp)
-{
- return seq_open(filp, &locks_seq_operations);
-}
-
-static const struct file_operations proc_locks_operations = {
- .open = locks_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-#endif /* CONFIG_FILE_LOCKING */
-
-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_PROC_PAGE_MONITOR
-#define KPMSIZE sizeof(u64)
-#define KPMMASK (KPMSIZE - 1)
-/* /proc/kpagecount - an array exposing page counts
- *
- * Each entry is a u64 representing the corresponding
- * physical page count.
- */
-static ssize_t kpagecount_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- u64 __user *out = (u64 __user *)buf;
- struct page *ppage;
- unsigned long src = *ppos;
- unsigned long pfn;
- ssize_t ret = 0;
- u64 pcount;
-
- pfn = src / KPMSIZE;
- count = min_t(size_t, count, (max_pfn * KPMSIZE) - src);
- if (src & KPMMASK || count & KPMMASK)
- return -EINVAL;
-
- while (count > 0) {
- ppage = NULL;
- if (pfn_valid(pfn))
- ppage = pfn_to_page(pfn);
- pfn++;
- if (!ppage)
- pcount = 0;
- else
- pcount = page_mapcount(ppage);
-
- if (put_user(pcount, out++)) {
- ret = -EFAULT;
- break;
- }
-
- count -= KPMSIZE;
- }
-
- *ppos += (char __user *)out - buf;
- if (!ret)
- ret = (char __user *)out - buf;
- return ret;
-}
-
-static struct file_operations proc_kpagecount_operations = {
- .llseek = mem_lseek,
- .read = kpagecount_read,
-};
-
-/* /proc/kpageflags - an array exposing page flags
- *
- * Each entry is a u64 representing the corresponding
- * physical page flags.
- */
-
-/* These macros are used to decouple internal flags from exported ones */
-
-#define KPF_LOCKED 0
-#define KPF_ERROR 1
-#define KPF_REFERENCED 2
-#define KPF_UPTODATE 3
-#define KPF_DIRTY 4
-#define KPF_LRU 5
-#define KPF_ACTIVE 6
-#define KPF_SLAB 7
-#define KPF_WRITEBACK 8
-#define KPF_RECLAIM 9
-#define KPF_BUDDY 10
-
-#define kpf_copy_bit(flags, srcpos, dstpos) (((flags >> srcpos) & 1) << dstpos)
-
-static ssize_t kpageflags_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- u64 __user *out = (u64 __user *)buf;
- struct page *ppage;
- unsigned long src = *ppos;
- unsigned long pfn;
- ssize_t ret = 0;
- u64 kflags, uflags;
-
- pfn = src / KPMSIZE;
- count = min_t(unsigned long, count, (max_pfn * KPMSIZE) - src);
- if (src & KPMMASK || count & KPMMASK)
- return -EINVAL;
-
- while (count > 0) {
- ppage = NULL;
- if (pfn_valid(pfn))
- ppage = pfn_to_page(pfn);
- pfn++;
- if (!ppage)
- kflags = 0;
- else
- kflags = ppage->flags;
-
- uflags = kpf_copy_bit(KPF_LOCKED, PG_locked, kflags) |
- kpf_copy_bit(kflags, KPF_ERROR, PG_error) |
- kpf_copy_bit(kflags, KPF_REFERENCED, PG_referenced) |
- kpf_copy_bit(kflags, KPF_UPTODATE, PG_uptodate) |
- kpf_copy_bit(kflags, KPF_DIRTY, PG_dirty) |
- kpf_copy_bit(kflags, KPF_LRU, PG_lru) |
- kpf_copy_bit(kflags, KPF_ACTIVE, PG_active) |
- kpf_copy_bit(kflags, KPF_SLAB, PG_slab) |
- kpf_copy_bit(kflags, KPF_WRITEBACK, PG_writeback) |
- kpf_copy_bit(kflags, KPF_RECLAIM, PG_reclaim) |
- kpf_copy_bit(kflags, KPF_BUDDY, PG_buddy);
-
- if (put_user(uflags, out++)) {
- ret = -EFAULT;
- break;
- }
-
- count -= KPMSIZE;
- }
-
- *ppos += (char __user *)out - buf;
- if (!ret)
- ret = (char __user *)out - buf;
- return ret;
-}
-
-static struct file_operations proc_kpageflags_operations = {
- .llseek = mem_lseek,
- .read = kpageflags_read,
-};
-#endif /* CONFIG_PROC_PAGE_MONITOR */
-
-struct proc_dir_entry *proc_root_kcore;
-
-void __init proc_misc_init(void)
-{
- 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
- {"filesystems", filesystems_read_proc},
- {"cmdline", cmdline_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 */
-#ifdef CONFIG_PRINTK
- proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
-#endif
-#ifdef CONFIG_FILE_LOCKING
- proc_create("locks", 0, NULL, &proc_locks_operations);
-#endif
- proc_create("devices", 0, NULL, &proc_devinfo_operations);
- proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations);
-#ifdef CONFIG_BLOCK
- proc_create("partitions", 0, NULL, &proc_partitions_operations);
-#endif
- proc_create("stat", 0, NULL, &proc_stat_operations);
- proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
-#ifdef CONFIG_SLABINFO
- proc_create("slabinfo",S_IWUSR|S_IRUGO,NULL,&proc_slabinfo_operations);
-#ifdef CONFIG_DEBUG_SLAB_LEAK
- proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations);
-#endif
-#endif
-#ifdef CONFIG_MMU
- proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
-#endif
- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
- proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
-#ifdef CONFIG_BLOCK
- proc_create("diskstats", 0, NULL, &proc_diskstats_operations);
-#endif
-#ifdef CONFIG_MODULES
- proc_create("modules", 0, NULL, &proc_modules_operations);
-#endif
-#ifdef CONFIG_SCHEDSTATS
- proc_create("schedstat", 0, NULL, &proc_schedstat_operations);
-#endif
-#ifdef CONFIG_PROC_KCORE
- proc_root_kcore = proc_create("kcore", S_IRUSR, NULL, &proc_kcore_operations);
- if (proc_root_kcore)
- proc_root_kcore->size =
- (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
-#endif
-#ifdef CONFIG_PROC_PAGE_MONITOR
- proc_create("kpagecount", S_IRUSR, NULL, &proc_kpagecount_operations);
- proc_create("kpageflags", S_IRUSR, NULL, &proc_kpageflags_operations);
-#endif
-#ifdef CONFIG_PROC_VMCORE
- proc_vmcore = proc_create("vmcore", S_IRUSR, NULL, &proc_vmcore_operations);
-#endif
-}
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