Merge with /home/shaggy/git/linus-clean/

11 files changed, 226 insertions, 166 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 3e1239e4b3..7eb1bd7f80 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -308,7 +308,7 @@ int proc_pid_status(struct task_struct *task, char * buffer)
         buffer = task_sig(task, buffer);
         buffer = task_cap(task, buffer);
         buffer = cpuset_task_status_allowed(task, buffer);
-#if defined(CONFIG_ARCH_S390)
+#if defined(CONFIG_S390)
         buffer = task_show_regs(task, buffer);
 #endif
         return buffer - orig;
@@ -330,7 +330,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
         unsigned long  min_flt = 0,  maj_flt = 0;
         cputime_t cutime, cstime, utime, stime;
         unsigned long rsslim = 0;
-        unsigned long it_real_value = 0;
+        DEFINE_KTIME(it_real_value);
         struct task_struct *t;
         char tcomm[sizeof(task->comm)];
 
@@ -386,7 +386,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
                         utime = cputime_add(utime, task->signal->utime);
                         stime = cputime_add(stime, task->signal->stime);
                 }
-                it_real_value = task->signal->it_real_value;
+                it_real_value = task->signal->real_timer.expires;
         }
         ppid = pid_alive(task) ? task->group_leader->real_parent->tgid : 0;
         read_unlock(&tasklist_lock);
@@ -435,7 +435,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
                 priority,
                 nice,
                 num_threads,
-                jiffies_to_clock_t(it_real_value),
+                (long) ktime_to_clock_t(it_real_value),
                 start_time,
                 vsize,
                 mm ? get_mm_rss(mm) : 0,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 634355e169..20feb7568d 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -55,6 +55,7 @@
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
 #include <linux/init.h>
+#include <linux/capability.h>
 #include <linux/file.h>
 #include <linux/string.h>
 #include <linux/seq_file.h>
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index b638fb5007..20e5c4509a 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -21,6 +21,8 @@
 #include <linux/bitops.h>
 #include <asm/uaccess.h>
 
+#include "internal.h"
+
 static ssize_t proc_file_read(struct file *file, char __user *buf,
                               size_t nbytes, loff_t *ppos);
 static ssize_t proc_file_write(struct file *file, const char __user *buffer,
@@ -54,6 +56,18 @@ proc_file_read(struct file *file, char __user *buf, size_t nbytes,
         ssize_t n, count;
         char    *start;
         struct proc_dir_entry * dp;
+        unsigned long long pos;
+
+        /*
+         * Gaah, please just use "seq_file" instead. The legacy /proc
+         * interfaces cut loff_t down to off_t for reads, and ignore
+         * the offset entirely for writes..
+         */
+        pos = *ppos;
+        if (pos > MAX_NON_LFS)
+                return 0;
+        if (nbytes > MAX_NON_LFS - pos)
+                nbytes = MAX_NON_LFS - pos;
 
         dp = PDE(inode);
         if (!(page = (char*) __get_free_page(GFP_KERNEL)))
@@ -202,30 +216,17 @@ proc_file_write(struct file *file, const char __user *buffer,
 static loff_t
 proc_file_lseek(struct file *file, loff_t offset, int orig)
 {
-    lock_kernel();
-
-    switch (orig) {
-    case 0:
-        if (offset < 0)
-            goto out;
-        file->f_pos = offset;
-        unlock_kernel();
-        return(file->f_pos);
-    case 1:
-        if (offset + file->f_pos < 0)
-            goto out;
-        file->f_pos += offset;
-        unlock_kernel();
-        return(file->f_pos);
-    case 2:
-        goto out;
-    default:
-        goto out;
-    }
-
-out:
-    unlock_kernel();
-    return -EINVAL;
+        loff_t retval = -EINVAL;
+        switch (orig) {
+        case 1:
+                offset += file->f_pos;
+        /* fallthrough */
+        case 0:
+                if (offset < 0 || offset > MAX_NON_LFS)
+                        break;
+                file->f_pos = retval = offset;
+        }
+        return retval;
 }
 
 static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index e6a818a93f..6573f31f1f 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -19,7 +19,7 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 
-extern void free_proc_entry(struct proc_dir_entry *);
+#include "internal.h"
 
 static inline struct proc_dir_entry * de_get(struct proc_dir_entry *de)
 {
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 3e55198f98..95a1cf32b8 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -37,6 +37,10 @@ extern int proc_tgid_stat(struct task_struct *, char *);
 extern int proc_pid_status(struct task_struct *, char *);
 extern int proc_pid_statm(struct task_struct *, char *);
 
+void free_proc_entry(struct proc_dir_entry *de);
+
+int proc_init_inodecache(void);
+
 static inline struct task_struct *proc_task(struct inode *inode)
 {
         return PROC_I(inode)->task;
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 1c7da988fc..adc2cd9516 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -14,6 +14,7 @@
 #include <linux/proc_fs.h>
 #include <linux/user.h>
 #include <linux/a.out.h>
+#include <linux/capability.h>
 #include <linux/elf.h>
 #include <linux/elfcore.h>
 #include <linux/vmalloc.h>
diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
index fb117b7480..9bdd077d6f 100644
--- a/fs/proc/proc_devtree.c
+++ b/fs/proc/proc_devtree.c
@@ -81,6 +81,30 @@ void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop
         __proc_device_tree_add_prop(pde, prop);
 }
 
+void proc_device_tree_remove_prop(struct proc_dir_entry *pde,
+                                  struct property *prop)
+{
+        remove_proc_entry(prop->name, pde);
+}
+
+void proc_device_tree_update_prop(struct proc_dir_entry *pde,
+                                  struct property *newprop,
+                                  struct property *oldprop)
+{
+        struct proc_dir_entry *ent;
+
+        for (ent = pde->subdir; ent != NULL; ent = ent->next)
+                if (ent->data == oldprop)
+                        break;
+        if (ent == NULL) {
+                printk(KERN_WARNING "device-tree: property \"%s\" "
+                       " does not exist\n", oldprop->name);
+        } else {
+                ent->data = newprop;
+                ent->size = newprop->length;
+        }
+}
+
 /*
  * Process a node, adding entries for its children and its properties.
  */
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 5b6b0b6038..8f8014285a 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -20,6 +20,7 @@
 #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>
@@ -62,7 +63,6 @@
  */
 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 *);
@@ -248,6 +248,154 @@ static int cpuinfo_open(struct inode *inode, struct file *file)
 {
         return seq_open(file, &cpuinfo_op);
 }
+
+enum devinfo_states {
+        CHR_HDR,
+        CHR_LIST,
+        BLK_HDR,
+        BLK_LIST,
+        DEVINFO_DONE
+};
+
+struct devinfo_state {
+        void *chrdev;
+        void *blkdev;
+        unsigned int num_records;
+        unsigned int cur_record;
+        enum devinfo_states state;
+};
+
+static void *devinfo_start(struct seq_file *f, loff_t *pos)
+{
+        struct devinfo_state *info = f->private;
+
+        if (*pos) {
+                if ((info) && (*pos <= info->num_records))
+                        return info;
+                return NULL;
+        }
+        info = kmalloc(sizeof(*info), GFP_KERNEL);
+        f->private = info;
+        info->chrdev = acquire_chrdev_list();
+        info->blkdev = acquire_blkdev_list();
+        info->state = CHR_HDR;
+        info->num_records = count_chrdev_list();
+        info->num_records += count_blkdev_list();
+        info->num_records += 2; /* Character and Block headers */
+        *pos = 1;
+        info->cur_record = *pos;
+        return info;
+}
+
+static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
+{
+        int idummy;
+        char *ndummy;
+        struct devinfo_state *info = f->private;
+
+        switch (info->state) {
+                case CHR_HDR:
+                        info->state = CHR_LIST;
+                        (*pos)++;
+                        /*fallthrough*/
+                case CHR_LIST:
+                        if (get_chrdev_info(info->chrdev,&idummy,&ndummy)) {
+                                /*
+                                 * The character dev list is complete
+                                 */
+                                info->state = BLK_HDR;
+                        } else {
+                                info->chrdev = get_next_chrdev(info->chrdev);
+                        }
+                        (*pos)++;
+                        break;
+                case BLK_HDR:
+                        info->state = BLK_LIST;
+                        (*pos)++;
+                        break;
+                case BLK_LIST:
+                        if (get_blkdev_info(info->blkdev,&idummy,&ndummy)) {
+                                /*
+                                 * The block dev list is complete
+                                 */
+                                info->state = DEVINFO_DONE;
+                        } else {
+                                info->blkdev = get_next_blkdev(info->blkdev);
+                        }
+                        (*pos)++;
+                        break;
+                case DEVINFO_DONE:
+                        (*pos)++;
+                        info->cur_record = *pos;
+                        info = NULL;
+                        break;
+                default:
+                        break;
+        }
+        if (info)
+                info->cur_record = *pos;
+        return info;
+}
+
+static void devinfo_stop(struct seq_file *f, void *v)
+{
+        struct devinfo_state *info = f->private;
+
+        if (info) {
+                release_chrdev_list(info->chrdev);
+                release_blkdev_list(info->blkdev);
+                f->private = NULL;
+                kfree(info);
+        }
+}
+
+static int devinfo_show(struct seq_file *f, void *arg)
+{
+        int major;
+        char *name;
+        struct devinfo_state *info = f->private;
+
+        switch(info->state) {
+                case CHR_HDR:
+                        seq_printf(f,"Character devices:\n");
+                        /* fallthrough */
+                case CHR_LIST:
+                        if (!get_chrdev_info(info->chrdev,&major,&name))
+                                seq_printf(f,"%3d %s\n",major,name);
+                        break;
+                case BLK_HDR:
+                        seq_printf(f,"\nBlock devices:\n");
+                        /* fallthrough */
+                case BLK_LIST:
+                        if (!get_blkdev_info(info->blkdev,&major,&name))
+                                seq_printf(f,"%3d %s\n",major,name);
+                        break;
+                default:
+                        break;
+        }
+
+        return 0;
+}
+
+static  struct seq_operations devinfo_op = {
+        .start  = devinfo_start,
+        .next   = devinfo_next,
+        .stop   = devinfo_stop,
+        .show   = devinfo_show,
+};
+
+static int devinfo_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &devinfo_op);
+}
+
+static struct file_operations proc_devinfo_operations = {
+        .open           = devinfo_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
 static struct file_operations proc_cpuinfo_operations = {
         .open           = cpuinfo_open,
         .read           = seq_read,
@@ -323,6 +471,7 @@ static struct file_operations proc_modules_operations = {
 };
 #endif
 
+#ifdef CONFIG_SLAB
 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)
@@ -336,6 +485,7 @@ static struct file_operations proc_slabinfo_operations = {
         .llseek         = seq_lseek,
         .release        = seq_release,
 };
+#endif
 
 static int show_stat(struct seq_file *p, void *v)
 {
@@ -448,14 +598,6 @@ static struct file_operations proc_stat_operations = {
         .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, len);
-        return proc_calc_metrics(page, start, off, count, eof, len);
-}
-
 /*
  * /proc/interrupts
  */
@@ -580,7 +722,6 @@ void __init proc_misc_init(void)
 #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},
@@ -596,11 +737,14 @@ void __init proc_misc_init(void)
         entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
         if (entry)
                 entry->proc_fops = &proc_kmsg_operations;
+        create_seq_entry("devices", 0, &proc_devinfo_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);
+#ifdef CONFIG_SLAB
         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
+#endif
         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
diff --git a/fs/proc/root.c b/fs/proc/root.c
index aef148f099..68896283c8 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -18,6 +18,8 @@
 #include <linux/bitops.h>
 #include <linux/smp_lock.h>
 
+#include "internal.h"
+
 struct proc_dir_entry *proc_net, *proc_net_stat, *proc_bus, *proc_root_fs, *proc_root_driver;
 
 #ifdef CONFIG_SYSCTL
@@ -36,7 +38,6 @@ static struct file_system_type proc_fs_type = {
         .kill_sb        = kill_anon_super,
 };
 
-extern int __init proc_init_inodecache(void);
 void __init proc_root_init(void)
 {
         int err = proc_init_inodecache();
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index d2fa42006d..0eaad41f46 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -195,7 +195,7 @@ static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats
 
 static int show_map(struct seq_file *m, void *v)
 {
-        return show_map_internal(m, v, 0);
+        return show_map_internal(m, v, NULL);
 }
 
 static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
@@ -390,130 +390,12 @@ struct seq_operations proc_pid_smaps_op = {
 };
 
 #ifdef CONFIG_NUMA
-
-struct numa_maps {
-        unsigned long pages;
-        unsigned long anon;
-        unsigned long mapped;
-        unsigned long mapcount_max;
-        unsigned long node[MAX_NUMNODES];
-};
-
-/*
- * Calculate numa node maps for a vma
- */
-static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
-{
-        struct page *page;
-        unsigned long vaddr;
-        struct mm_struct *mm = vma->vm_mm;
-        int i;
-        struct numa_maps *md = kmalloc(sizeof(struct numa_maps), GFP_KERNEL);
-
-        if (!md)
-                return NULL;
-        md->pages = 0;
-        md->anon = 0;
-        md->mapped = 0;
-        md->mapcount_max = 0;
-        for_each_node(i)
-                md->node[i] =0;
-
-        for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
-                page = follow_page(mm, vaddr, 0);
-                if (page) {
-                        int count = page_mapcount(page);
-
-                        if (count)
-                                md->mapped++;
-                        if (count > md->mapcount_max)
-                                md->mapcount_max = count;
-                        md->pages++;
-                        if (PageAnon(page))
-                                md->anon++;
-                        md->node[page_to_nid(page)]++;
-                }
-                cond_resched();
-        }
-        return md;
-}
-
-static int show_numa_map(struct seq_file *m, void *v)
-{
-        struct task_struct *task = m->private;
-        struct vm_area_struct *vma = v;
-        struct mempolicy *pol;
-        struct numa_maps *md;
-        struct zone **z;
-        int n;
-        int first;
-
-        if (!vma->vm_mm)
-                return 0;
-
-        md = get_numa_maps(vma);
-        if (!md)
-                return 0;
-
-        seq_printf(m, "%08lx", vma->vm_start);
-        pol = get_vma_policy(task, vma, vma->vm_start);
-        /* Print policy */
-        switch (pol->policy) {
-        case MPOL_PREFERRED:
-                seq_printf(m, " prefer=%d", pol->v.preferred_node);
-                break;
-        case MPOL_BIND:
-                seq_printf(m, " bind={");
-                first = 1;
-                for (z = pol->v.zonelist->zones; *z; z++) {
-
-                        if (!first)
-                                seq_putc(m, ',');
-                        else
-                                first = 0;
-                        seq_printf(m, "%d/%s", (*z)->zone_pgdat->node_id,
-                                        (*z)->name);
-                }
-                seq_putc(m, '}');
-                break;
-        case MPOL_INTERLEAVE:
-                seq_printf(m, " interleave={");
-                first = 1;
-                for_each_node(n) {
-                        if (node_isset(n, pol->v.nodes)) {
-                                if (!first)
-                                        seq_putc(m,',');
-                                else
-                                        first = 0;
-                                seq_printf(m, "%d",n);
-                        }
-                }
-                seq_putc(m, '}');
-                break;
-        default:
-                seq_printf(m," default");
-                break;
-        }
-        seq_printf(m, " MaxRef=%lu Pages=%lu Mapped=%lu",
-                        md->mapcount_max, md->pages, md->mapped);
-        if (md->anon)
-                seq_printf(m," Anon=%lu",md->anon);
-
-        for_each_online_node(n) {
-                if (md->node[n])
-                        seq_printf(m, " N%d=%lu", n, md->node[n]);
-        }
-        seq_putc(m, '\n');
-        kfree(md);
-        if (m->count < m->size)  /* vma is copied successfully */
-                m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
-        return 0;
-}
+extern int show_numa_map(struct seq_file *m, void *v);
 
 struct seq_operations proc_pid_numa_maps_op = {
-        .start  = m_start,
-        .next   = m_next,
-        .stop   = m_stop,
-        .show   = show_numa_map
+        .start  = m_start,
+        .next   = m_next,
+        .stop   = m_stop,
+        .show   = show_numa_map
 };
 #endif
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 3b2e7b69e6..4063fb32f7 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -14,7 +14,6 @@
 #include <linux/a.out.h>
 #include <linux/elf.h>
 #include <linux/elfcore.h>
-#include <linux/proc_fs.h>
 #include <linux/highmem.h>
 #include <linux/bootmem.h>
 #include <linux/init.h>
@@ -35,11 +34,14 @@ static size_t elfcorebuf_sz;
 /* Total size of vmcore file. */
 static u64 vmcore_size;
 
+/* Stores the physical address of elf header of crash image. */
+unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
+
 struct proc_dir_entry *proc_vmcore = NULL;
 
 /* Reads a page from the oldmem device from given offset. */
 static ssize_t read_from_oldmem(char *buf, size_t count,
-                             loff_t *ppos, int userbuf)
+                                u64 *ppos, int userbuf)
 {
         unsigned long pfn, offset;
         size_t nr_bytes;