proc: move pagecount stuff to fs/proc/page.c

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

1 files changed, 0 insertions, 135 deletions

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 5ed15ff8fd1d..2ef9ef9bc8c1 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -57,146 +57,11 @@
 #include <asm/div64.h>
 #include "internal.h"
 
-#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 */
-
 void __init proc_misc_init(void)
 {
         proc_symlink("mounts", NULL, "self/mounts");
 
         /* And now for trickier ones */
-#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