#include <asm/div64.h>
#include "internal.h"
-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 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_BLOCK
-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,
-};
-#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
-
-#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)
{
proc_symlink("mounts", NULL, "self/mounts");
/* And now for trickier ones */
-#ifdef CONFIG_SLABINFO
- proc_create("slabinfo",S_IWUSR|S_IRUGO,NULL,&proc_slabinfo_operations);
-#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
}