aboutsummaryrefslogtreecommitdiffstats
path: root/fs/proc
diff options
context:
space:
mode:
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/array.c2
-rw-r--r--fs/proc/generic.c2
-rw-r--r--fs/proc/inode.c17
-rw-r--r--fs/proc/task_mmu.c51
4 files changed, 43 insertions, 29 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index d84eecacbea..3e1239e4b30 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -438,7 +438,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
jiffies_to_clock_t(it_real_value),
start_time,
vsize,
- mm ? get_mm_counter(mm, rss) : 0, /* you might want to shift this left 3 */
+ mm ? get_mm_rss(mm) : 0,
rsslim,
mm ? mm->start_code : 0,
mm ? mm->end_code : 0,
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 8a8c34461d4..b638fb50074 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -533,7 +533,7 @@ static void proc_kill_inodes(struct proc_dir_entry *de)
*/
file_list_lock();
list_for_each(p, &sb->s_files) {
- struct file * filp = list_entry(p, struct file, f_list);
+ struct file * filp = list_entry(p, struct file, f_u.fu_list);
struct dentry * dentry = filp->f_dentry;
struct inode * inode;
struct file_operations *fops;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index effa6c0c467..e6a818a93f3 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -156,10 +156,13 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
WARN_ON(de && de->deleted);
+ if (de != NULL && !try_module_get(de->owner))
+ goto out_mod;
+
inode = iget(sb, ino);
if (!inode)
- goto out_fail;
-
+ goto out_ino;
+
PROC_I(inode)->pde = de;
if (de) {
if (de->mode) {
@@ -171,20 +174,20 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
inode->i_size = de->size;
if (de->nlink)
inode->i_nlink = de->nlink;
- if (!try_module_get(de->owner))
- goto out_fail;
if (de->proc_iops)
inode->i_op = de->proc_iops;
if (de->proc_fops)
inode->i_fop = de->proc_fops;
}
-out:
return inode;
-out_fail:
+out_ino:
+ if (de != NULL)
+ module_put(de->owner);
+out_mod:
de_put(de);
- goto out;
+ return NULL;
}
int proc_fill_super(struct super_block *s, void *data, int silent)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index c7ef3e48e35..d2fa42006d8 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -14,22 +14,41 @@
char *task_mem(struct mm_struct *mm, char *buffer)
{
unsigned long data, text, lib;
+ unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss;
+
+ /*
+ * Note: to minimize their overhead, mm maintains hiwater_vm and
+ * hiwater_rss only when about to *lower* total_vm or rss. Any
+ * collector of these hiwater stats must therefore get total_vm
+ * and rss too, which will usually be the higher. Barriers? not
+ * worth the effort, such snapshots can always be inconsistent.
+ */
+ hiwater_vm = total_vm = mm->total_vm;
+ if (hiwater_vm < mm->hiwater_vm)
+ hiwater_vm = mm->hiwater_vm;
+ hiwater_rss = total_rss = get_mm_rss(mm);
+ if (hiwater_rss < mm->hiwater_rss)
+ hiwater_rss = mm->hiwater_rss;
data = mm->total_vm - mm->shared_vm - mm->stack_vm;
text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
buffer += sprintf(buffer,
+ "VmPeak:\t%8lu kB\n"
"VmSize:\t%8lu kB\n"
"VmLck:\t%8lu kB\n"
+ "VmHWM:\t%8lu kB\n"
"VmRSS:\t%8lu kB\n"
"VmData:\t%8lu kB\n"
"VmStk:\t%8lu kB\n"
"VmExe:\t%8lu kB\n"
"VmLib:\t%8lu kB\n"
"VmPTE:\t%8lu kB\n",
- (mm->total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
+ hiwater_vm << (PAGE_SHIFT-10),
+ (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
mm->locked_vm << (PAGE_SHIFT-10),
- get_mm_counter(mm, rss) << (PAGE_SHIFT-10),
+ hiwater_rss << (PAGE_SHIFT-10),
+ total_rss << (PAGE_SHIFT-10),
data << (PAGE_SHIFT-10),
mm->stack_vm << (PAGE_SHIFT-10), text, lib,
(PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
@@ -44,13 +63,11 @@ unsigned long task_vsize(struct mm_struct *mm)
int task_statm(struct mm_struct *mm, int *shared, int *text,
int *data, int *resident)
{
- int rss = get_mm_counter(mm, rss);
-
- *shared = rss - get_mm_counter(mm, anon_rss);
+ *shared = get_mm_counter(mm, file_rss);
*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
>> PAGE_SHIFT;
*data = mm->total_vm - mm->shared_vm;
- *resident = rss;
+ *resident = *shared + get_mm_counter(mm, anon_rss);
return mm->total_vm;
}
@@ -186,13 +203,14 @@ static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
struct mem_size_stats *mss)
{
pte_t *pte, ptent;
+ spinlock_t *ptl;
unsigned long pfn;
struct page *page;
- pte = pte_offset_map(pmd, addr);
+ pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
do {
ptent = *pte;
- if (pte_none(ptent) || !pte_present(ptent))
+ if (!pte_present(ptent))
continue;
mss->resident += PAGE_SIZE;
@@ -213,8 +231,8 @@ static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
mss->private_clean += PAGE_SIZE;
}
} while (pte++, addr += PAGE_SIZE, addr != end);
- pte_unmap(pte - 1);
- cond_resched_lock(&vma->vm_mm->page_table_lock);
+ pte_unmap_unlock(pte - 1, ptl);
+ cond_resched();
}
static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud,
@@ -268,17 +286,11 @@ static inline void smaps_pgd_range(struct vm_area_struct *vma,
static int show_smap(struct seq_file *m, void *v)
{
struct vm_area_struct *vma = v;
- struct mm_struct *mm = vma->vm_mm;
struct mem_size_stats mss;
memset(&mss, 0, sizeof mss);
-
- if (mm) {
- spin_lock(&mm->page_table_lock);
+ if (vma->vm_mm)
smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss);
- spin_unlock(&mm->page_table_lock);
- }
-
return show_map_internal(m, v, &mss);
}
@@ -407,7 +419,6 @@ static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
for_each_node(i)
md->node[i] =0;
- spin_lock(&mm->page_table_lock);
for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
page = follow_page(mm, vaddr, 0);
if (page) {
@@ -422,8 +433,8 @@ static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
md->anon++;
md->node[page_to_nid(page)]++;
}
+ cond_resched();
}
- spin_unlock(&mm->page_table_lock);
return md;
}
@@ -469,7 +480,7 @@ static int show_numa_map(struct seq_file *m, void *v)
seq_printf(m, " interleave={");
first = 1;
for_each_node(n) {
- if (test_bit(n, pol->v.nodes)) {
+ if (node_isset(n, pol->v.nodes)) {
if (!first)
seq_putc(m,',');
else
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 18:16:54 +0000