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-rw-r--r--fs/proc/array.c44
-rw-r--r--fs/proc/generic.c27
-rw-r--r--fs/proc/inode.c2
-rw-r--r--fs/proc/page.c16
-rw-r--r--fs/proc/task_mmu.c250
-rw-r--r--fs/proc/vmcore.c8
6 files changed, 164 insertions, 183 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index bd117d065b82..1295a00ca316 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -81,6 +81,7 @@
#include <linux/pid_namespace.h>
#include <linux/ptrace.h>
#include <linux/tracehook.h>
+#include <linux/string_helpers.h>
#include <linux/user_namespace.h>
#include <asm/pgtable.h>
@@ -89,39 +90,18 @@
static inline void task_name(struct seq_file *m, struct task_struct *p)
{
- int i;
- char *buf, *end;
- char *name;
+ char *buf;
char tcomm[sizeof(p->comm)];
get_task_comm(tcomm, p);
seq_puts(m, "Name:\t");
- end = m->buf + m->size;
buf = m->buf + m->count;
- name = tcomm;
- i = sizeof(tcomm);
- while (i && (buf < end)) {
- unsigned char c = *name;
- name++;
- i--;
- *buf = c;
- if (!c)
- break;
- if (c == '\\') {
- buf++;
- if (buf < end)
- *buf++ = c;
- continue;
- }
- if (c == '\n') {
- *buf++ = '\\';
- if (buf < end)
- *buf++ = 'n';
- continue;
- }
- buf++;
- }
+
+ /* Ignore error for now */
+ string_escape_str(tcomm, &buf, m->size - m->count,
+ ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\");
+
m->count = buf - m->buf;
seq_putc(m, '\n');
}
@@ -336,12 +316,10 @@ static inline void task_context_switch_counts(struct seq_file *m,
static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
{
- seq_puts(m, "Cpus_allowed:\t");
- seq_cpumask(m, &task->cpus_allowed);
- seq_putc(m, '\n');
- seq_puts(m, "Cpus_allowed_list:\t");
- seq_cpumask_list(m, &task->cpus_allowed);
- seq_putc(m, '\n');
+ seq_printf(m, "Cpus_allowed:\t%*pb\n",
+ cpumask_pr_args(&task->cpus_allowed));
+ seq_printf(m, "Cpus_allowed_list:\t%*pbl\n",
+ cpumask_pr_args(&task->cpus_allowed));
}
int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 7fea13229f33..3309f59d421b 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -122,7 +122,7 @@ static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat)
{
struct inode *inode = dentry->d_inode;
- struct proc_dir_entry *de = PROC_I(inode)->pde;
+ struct proc_dir_entry *de = PDE(inode);
if (de && de->nlink)
set_nlink(inode, de->nlink);
@@ -350,29 +350,12 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
if (ret)
return ret;
- if (S_ISDIR(dp->mode)) {
- dp->proc_fops = &proc_dir_operations;
- dp->proc_iops = &proc_dir_inode_operations;
- dir->nlink++;
- } else if (S_ISLNK(dp->mode)) {
- dp->proc_iops = &proc_link_inode_operations;
- } else if (S_ISREG(dp->mode)) {
- BUG_ON(dp->proc_fops == NULL);
- dp->proc_iops = &proc_file_inode_operations;
- } else {
- WARN_ON(1);
- proc_free_inum(dp->low_ino);
- return -EINVAL;
- }
-
spin_lock(&proc_subdir_lock);
dp->parent = dir;
if (pde_subdir_insert(dir, dp) == false) {
WARN(1, "proc_dir_entry '%s/%s' already registered\n",
dir->name, dp->name);
spin_unlock(&proc_subdir_lock);
- if (S_ISDIR(dp->mode))
- dir->nlink--;
proc_free_inum(dp->low_ino);
return -EEXIST;
}
@@ -431,6 +414,7 @@ struct proc_dir_entry *proc_symlink(const char *name,
ent->data = kmalloc((ent->size=strlen(dest))+1, GFP_KERNEL);
if (ent->data) {
strcpy((char*)ent->data,dest);
+ ent->proc_iops = &proc_link_inode_operations;
if (proc_register(parent, ent) < 0) {
kfree(ent->data);
kfree(ent);
@@ -456,8 +440,12 @@ struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
ent->data = data;
+ ent->proc_fops = &proc_dir_operations;
+ ent->proc_iops = &proc_dir_inode_operations;
+ parent->nlink++;
if (proc_register(parent, ent) < 0) {
kfree(ent);
+ parent->nlink--;
ent = NULL;
}
}
@@ -493,6 +481,8 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
return NULL;
}
+ BUG_ON(proc_fops == NULL);
+
if ((mode & S_IALLUGO) == 0)
mode |= S_IRUGO;
pde = __proc_create(&parent, name, mode, 1);
@@ -500,6 +490,7 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
goto out;
pde->proc_fops = proc_fops;
pde->data = data;
+ pde->proc_iops = &proc_file_inode_operations;
if (proc_register(parent, pde) < 0)
goto out_free;
return pde;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 8420a2f80811..13a50a32652d 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -40,7 +40,7 @@ static void proc_evict_inode(struct inode *inode)
put_pid(PROC_I(inode)->pid);
/* Let go of any associated proc directory entry */
- de = PROC_I(inode)->pde;
+ de = PDE(inode);
if (de)
pde_put(de);
head = PROC_I(inode)->sysctl;
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 1e3187da1fed..7eee2d8b97d9 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -5,6 +5,7 @@
#include <linux/ksm.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
+#include <linux/huge_mm.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/hugetlb.h>
@@ -121,9 +122,18 @@ u64 stable_page_flags(struct page *page)
* just checks PG_head/PG_tail, so we need to check PageLRU/PageAnon
* to make sure a given page is a thp, not a non-huge compound page.
*/
- else if (PageTransCompound(page) && (PageLRU(compound_head(page)) ||
- PageAnon(compound_head(page))))
- u |= 1 << KPF_THP;
+ else if (PageTransCompound(page)) {
+ struct page *head = compound_head(page);
+
+ if (PageLRU(head) || PageAnon(head))
+ u |= 1 << KPF_THP;
+ else if (is_huge_zero_page(head)) {
+ u |= 1 << KPF_ZERO_PAGE;
+ u |= 1 << KPF_THP;
+ }
+ } else if (is_zero_pfn(page_to_pfn(page)))
+ u |= 1 << KPF_ZERO_PAGE;
+
/*
* Caveats on high order pages: page->_count will only be set
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 246eae84b13b..956b75d61809 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -21,7 +21,7 @@
void task_mem(struct seq_file *m, struct mm_struct *mm)
{
- unsigned long data, text, lib, swap;
+ unsigned long data, text, lib, swap, ptes, pmds;
unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss;
/*
@@ -42,6 +42,8 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
swap = get_mm_counter(mm, MM_SWAPENTS);
+ ptes = PTRS_PER_PTE * sizeof(pte_t) * atomic_long_read(&mm->nr_ptes);
+ pmds = PTRS_PER_PMD * sizeof(pmd_t) * mm_nr_pmds(mm);
seq_printf(m,
"VmPeak:\t%8lu kB\n"
"VmSize:\t%8lu kB\n"
@@ -54,6 +56,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
"VmExe:\t%8lu kB\n"
"VmLib:\t%8lu kB\n"
"VmPTE:\t%8lu kB\n"
+ "VmPMD:\t%8lu kB\n"
"VmSwap:\t%8lu kB\n",
hiwater_vm << (PAGE_SHIFT-10),
total_vm << (PAGE_SHIFT-10),
@@ -63,8 +66,8 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
total_rss << (PAGE_SHIFT-10),
data << (PAGE_SHIFT-10),
mm->stack_vm << (PAGE_SHIFT-10), text, lib,
- (PTRS_PER_PTE * sizeof(pte_t) *
- atomic_long_read(&mm->nr_ptes)) >> 10,
+ ptes >> 10,
+ pmds >> 10,
swap << (PAGE_SHIFT-10));
}
@@ -433,7 +436,6 @@ const struct file_operations proc_tid_maps_operations = {
#ifdef CONFIG_PROC_PAGE_MONITOR
struct mem_size_stats {
- struct vm_area_struct *vma;
unsigned long resident;
unsigned long shared_clean;
unsigned long shared_dirty;
@@ -443,7 +445,6 @@ struct mem_size_stats {
unsigned long anonymous;
unsigned long anonymous_thp;
unsigned long swap;
- unsigned long nonlinear;
u64 pss;
};
@@ -483,8 +484,7 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
struct mm_walk *walk)
{
struct mem_size_stats *mss = walk->private;
- struct vm_area_struct *vma = mss->vma;
- pgoff_t pgoff = linear_page_index(vma, addr);
+ struct vm_area_struct *vma = walk->vma;
struct page *page = NULL;
if (pte_present(*pte)) {
@@ -496,17 +496,10 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
mss->swap += PAGE_SIZE;
else if (is_migration_entry(swpent))
page = migration_entry_to_page(swpent);
- } else if (pte_file(*pte)) {
- if (pte_to_pgoff(*pte) != pgoff)
- mss->nonlinear += PAGE_SIZE;
}
if (!page)
return;
-
- if (page->index != pgoff)
- mss->nonlinear += PAGE_SIZE;
-
smaps_account(mss, page, PAGE_SIZE, pte_young(*pte), pte_dirty(*pte));
}
@@ -515,7 +508,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
struct mm_walk *walk)
{
struct mem_size_stats *mss = walk->private;
- struct vm_area_struct *vma = mss->vma;
+ struct vm_area_struct *vma = walk->vma;
struct page *page;
/* FOLL_DUMP will return -EFAULT on huge zero page */
@@ -536,8 +529,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
- struct mem_size_stats *mss = walk->private;
- struct vm_area_struct *vma = mss->vma;
+ struct vm_area_struct *vma = walk->vma;
pte_t *pte;
spinlock_t *ptl;
@@ -596,7 +588,6 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma)
[ilog2(VM_ACCOUNT)] = "ac",
[ilog2(VM_NORESERVE)] = "nr",
[ilog2(VM_HUGETLB)] = "ht",
- [ilog2(VM_NONLINEAR)] = "nl",
[ilog2(VM_ARCH_1)] = "ar",
[ilog2(VM_DONTDUMP)] = "dd",
#ifdef CONFIG_MEM_SOFT_DIRTY
@@ -630,10 +621,8 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
};
memset(&mss, 0, sizeof mss);
- mss.vma = vma;
/* mmap_sem is held in m_start */
- if (vma->vm_mm && !is_vm_hugetlb_page(vma))
- walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk);
+ walk_page_vma(vma, &smaps_walk);
show_map_vma(m, vma, is_pid);
@@ -668,10 +657,6 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
(vma->vm_flags & VM_LOCKED) ?
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);
- if (vma->vm_flags & VM_NONLINEAR)
- seq_printf(m, "Nonlinear: %8lu kB\n",
- mss.nonlinear >> 10);
-
show_smap_vma_flags(m, vma);
m_cache_vma(m, vma);
return 0;
@@ -747,18 +732,18 @@ enum clear_refs_types {
CLEAR_REFS_ANON,
CLEAR_REFS_MAPPED,
CLEAR_REFS_SOFT_DIRTY,
+ CLEAR_REFS_MM_HIWATER_RSS,
CLEAR_REFS_LAST,
};
struct clear_refs_private {
- struct vm_area_struct *vma;
enum clear_refs_types type;
};
+#ifdef CONFIG_MEM_SOFT_DIRTY
static inline void clear_soft_dirty(struct vm_area_struct *vma,
unsigned long addr, pte_t *pte)
{
-#ifdef CONFIG_MEM_SOFT_DIRTY
/*
* The soft-dirty tracker uses #PF-s to catch writes
* to pages, so write-protect the pte as well. See the
@@ -772,24 +757,63 @@ static inline void clear_soft_dirty(struct vm_area_struct *vma,
ptent = pte_clear_flags(ptent, _PAGE_SOFT_DIRTY);
} else if (is_swap_pte(ptent)) {
ptent = pte_swp_clear_soft_dirty(ptent);
- } else if (pte_file(ptent)) {
- ptent = pte_file_clear_soft_dirty(ptent);
}
set_pte_at(vma->vm_mm, addr, pte, ptent);
-#endif
}
+static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma,
+ unsigned long addr, pmd_t *pmdp)
+{
+ pmd_t pmd = *pmdp;
+
+ pmd = pmd_wrprotect(pmd);
+ pmd = pmd_clear_flags(pmd, _PAGE_SOFT_DIRTY);
+
+ if (vma->vm_flags & VM_SOFTDIRTY)
+ vma->vm_flags &= ~VM_SOFTDIRTY;
+
+ set_pmd_at(vma->vm_mm, addr, pmdp, pmd);
+}
+
+#else
+
+static inline void clear_soft_dirty(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *pte)
+{
+}
+
+static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma,
+ unsigned long addr, pmd_t *pmdp)
+{
+}
+#endif
+
static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
struct clear_refs_private *cp = walk->private;
- struct vm_area_struct *vma = cp->vma;
+ struct vm_area_struct *vma = walk->vma;
pte_t *pte, ptent;
spinlock_t *ptl;
struct page *page;
- split_huge_page_pmd(vma, addr, pmd);
+ if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
+ if (cp->type == CLEAR_REFS_SOFT_DIRTY) {
+ clear_soft_dirty_pmd(vma, addr, pmd);
+ goto out;
+ }
+
+ page = pmd_page(*pmd);
+
+ /* Clear accessed and referenced bits. */
+ pmdp_test_and_clear_young(vma, addr, pmd);
+ ClearPageReferenced(page);
+out:
+ spin_unlock(ptl);
+ return 0;
+ }
+
if (pmd_trans_unstable(pmd))
return 0;
@@ -818,6 +842,28 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
return 0;
}
+static int clear_refs_test_walk(unsigned long start, unsigned long end,
+ struct mm_walk *walk)
+{
+ struct clear_refs_private *cp = walk->private;
+ struct vm_area_struct *vma = walk->vma;
+
+ if (vma->vm_flags & VM_PFNMAP)
+ return 1;
+
+ /*
+ * Writing 1 to /proc/pid/clear_refs affects all pages.
+ * Writing 2 to /proc/pid/clear_refs only affects anonymous pages.
+ * Writing 3 to /proc/pid/clear_refs only affects file mapped pages.
+ * Writing 4 to /proc/pid/clear_refs affects all pages.
+ */
+ if (cp->type == CLEAR_REFS_ANON && vma->vm_file)
+ return 1;
+ if (cp->type == CLEAR_REFS_MAPPED && !vma->vm_file)
+ return 1;
+ return 0;
+}
+
static ssize_t clear_refs_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
@@ -858,9 +904,22 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
};
struct mm_walk clear_refs_walk = {
.pmd_entry = clear_refs_pte_range,
+ .test_walk = clear_refs_test_walk,
.mm = mm,
.private = &cp,
};
+
+ if (type == CLEAR_REFS_MM_HIWATER_RSS) {
+ /*
+ * Writing 5 to /proc/pid/clear_refs resets the peak
+ * resident set size to this mm's current rss value.
+ */
+ down_write(&mm->mmap_sem);
+ reset_mm_hiwater_rss(mm);
+ up_write(&mm->mmap_sem);
+ goto out_mm;
+ }
+
down_read(&mm->mmap_sem);
if (type == CLEAR_REFS_SOFT_DIRTY) {
for (vma = mm->mmap; vma; vma = vma->vm_next) {
@@ -877,32 +936,12 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
}
mmu_notifier_invalidate_range_start(mm, 0, -1);
}
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
- cp.vma = vma;
- if (is_vm_hugetlb_page(vma))
- continue;
- /*
- * Writing 1 to /proc/pid/clear_refs affects all pages.
- *
- * Writing 2 to /proc/pid/clear_refs only affects
- * Anonymous pages.
- *
- * Writing 3 to /proc/pid/clear_refs only affects file
- * mapped pages.
- *
- * Writing 4 to /proc/pid/clear_refs affects all pages.
- */
- if (type == CLEAR_REFS_ANON && vma->vm_file)
- continue;
- if (type == CLEAR_REFS_MAPPED && !vma->vm_file)
- continue;
- walk_page_range(vma->vm_start, vma->vm_end,
- &clear_refs_walk);
- }
+ walk_page_range(0, ~0UL, &clear_refs_walk);
if (type == CLEAR_REFS_SOFT_DIRTY)
mmu_notifier_invalidate_range_end(mm, 0, -1);
flush_tlb_mm(mm);
up_read(&mm->mmap_sem);
+out_mm:
mmput(mm);
}
put_task_struct(task);
@@ -1066,15 +1105,13 @@ static inline void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, struct pagemap
static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
- struct vm_area_struct *vma;
+ struct vm_area_struct *vma = walk->vma;
struct pagemapread *pm = walk->private;
spinlock_t *ptl;
- pte_t *pte;
+ pte_t *pte, *orig_pte;
int err = 0;
- /* find the first VMA at or above 'addr' */
- vma = find_vma(walk->mm, addr);
- if (vma && pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
+ if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
int pmd_flags2;
if ((vma->vm_flags & VM_SOFTDIRTY) || pmd_soft_dirty(*pmd))
@@ -1100,51 +1137,20 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
if (pmd_trans_unstable(pmd))
return 0;
- while (1) {
- /* End of address space hole, which we mark as non-present. */
- unsigned long hole_end;
-
- if (vma)
- hole_end = min(end, vma->vm_start);
- else
- hole_end = end;
-
- for (; addr < hole_end; addr += PAGE_SIZE) {
- pagemap_entry_t pme = make_pme(PM_NOT_PRESENT(pm->v2));
-
- err = add_to_pagemap(addr, &pme, pm);
- if (err)
- return err;
- }
-
- if (!vma || vma->vm_start >= end)
- break;
- /*
- * We can't possibly be in a hugetlb VMA. In general,
- * for a mm_walk with a pmd_entry and a hugetlb_entry,
- * the pmd_entry can only be called on addresses in a
- * hugetlb if the walk starts in a non-hugetlb VMA and
- * spans a hugepage VMA. Since pagemap_read walks are
- * PMD-sized and PMD-aligned, this will never be true.
- */
- BUG_ON(is_vm_hugetlb_page(vma));
-
- /* Addresses in the VMA. */
- for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) {
- pagemap_entry_t pme;
- pte = pte_offset_map(pmd, addr);
- pte_to_pagemap_entry(&pme, pm, vma, addr, *pte);
- pte_unmap(pte);
- err = add_to_pagemap(addr, &pme, pm);
- if (err)
- return err;
- }
+ /*
+ * We can assume that @vma always points to a valid one and @end never
+ * goes beyond vma->vm_end.
+ */
+ orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
+ for (; addr < end; pte++, addr += PAGE_SIZE) {
+ pagemap_entry_t pme;
- if (addr == end)
+ pte_to_pagemap_entry(&pme, pm, vma, addr, *pte);
+ err = add_to_pagemap(addr, &pme, pm);
+ if (err)
break;
-
- vma = find_vma(walk->mm, addr);
}
+ pte_unmap_unlock(orig_pte, ptl);
cond_resched();
@@ -1170,15 +1176,12 @@ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask,
struct mm_walk *walk)
{
struct pagemapread *pm = walk->private;
- struct vm_area_struct *vma;
+ struct vm_area_struct *vma = walk->vma;
int err = 0;
int flags2;
pagemap_entry_t pme;
- vma = find_vma(walk->mm, addr);
- WARN_ON_ONCE(!vma);
-
- if (vma && (vma->vm_flags & VM_SOFTDIRTY))
+ if (vma->vm_flags & VM_SOFTDIRTY)
flags2 = __PM_SOFT_DIRTY;
else
flags2 = 0;
@@ -1338,7 +1341,6 @@ const struct file_operations proc_pagemap_operations = {
#ifdef CONFIG_NUMA
struct numa_maps {
- struct vm_area_struct *vma;
unsigned long pages;
unsigned long anon;
unsigned long active;
@@ -1407,18 +1409,17 @@ static struct page *can_gather_numa_stats(pte_t pte, struct vm_area_struct *vma,
static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
- struct numa_maps *md;
+ struct numa_maps *md = walk->private;
+ struct vm_area_struct *vma = walk->vma;
spinlock_t *ptl;
pte_t *orig_pte;
pte_t *pte;
- md = walk->private;
-
- if (pmd_trans_huge_lock(pmd, md->vma, &ptl) == 1) {
+ if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
pte_t huge_pte = *(pte_t *)pmd;
struct page *page;
- page = can_gather_numa_stats(huge_pte, md->vma, addr);
+ page = can_gather_numa_stats(huge_pte, vma, addr);
if (page)
gather_stats(page, md, pte_dirty(huge_pte),
HPAGE_PMD_SIZE/PAGE_SIZE);
@@ -1430,7 +1431,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
return 0;
orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
do {
- struct page *page = can_gather_numa_stats(*pte, md->vma, addr);
+ struct page *page = can_gather_numa_stats(*pte, vma, addr);
if (!page)
continue;
gather_stats(page, md, pte_dirty(*pte), 1);
@@ -1440,7 +1441,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
return 0;
}
#ifdef CONFIG_HUGETLB_PAGE
-static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask,
+static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask,
unsigned long addr, unsigned long end, struct mm_walk *walk)
{
struct numa_maps *md;
@@ -1459,7 +1460,7 @@ static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask,
}
#else
-static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask,
+static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask,
unsigned long addr, unsigned long end, struct mm_walk *walk)
{
return 0;
@@ -1477,7 +1478,12 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
struct numa_maps *md = &numa_priv->md;
struct file *file = vma->vm_file;
struct mm_struct *mm = vma->vm_mm;
- struct mm_walk walk = {};
+ struct mm_walk walk = {
+ .hugetlb_entry = gather_hugetlb_stats,
+ .pmd_entry = gather_pte_stats,
+ .private = md,
+ .mm = mm,
+ };
struct mempolicy *pol;
char buffer[64];
int nid;
@@ -1488,13 +1494,6 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
/* Ensure we start with an empty set of numa_maps statistics. */
memset(md, 0, sizeof(*md));
- md->vma = vma;
-
- walk.hugetlb_entry = gather_hugetbl_stats;
- walk.pmd_entry = gather_pte_stats;
- walk.private = md;
- walk.mm = mm;
-
pol = __get_vma_policy(vma, vma->vm_start);
if (pol) {
mpol_to_str(buffer, sizeof(buffer), pol);
@@ -1528,7 +1527,8 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
if (is_vm_hugetlb_page(vma))
seq_puts(m, " huge");
- walk_page_range(vma->vm_start, vma->vm_end, &walk);
+ /* mmap_sem is held by m_start */
+ walk_page_vma(vma, &walk);
if (!md->pages)
goto out;
@@ -1557,6 +1557,8 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
for_each_node_state(nid, N_MEMORY)
if (md->node[nid])
seq_printf(m, " N%d=%lu", nid, md->node[nid]);
+
+ seq_printf(m, " kernelpagesize_kB=%lu", vma_kernel_pagesize(vma) >> 10);
out:
seq_putc(m, '\n');
m_cache_vma(m, vma);
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index a90d6d354199..4e61388ec03d 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -546,8 +546,8 @@ static int __init update_note_header_size_elf64(const Elf64_Ehdr *ehdr_ptr)
nhdr_ptr = notes_section;
while (nhdr_ptr->n_namesz != 0) {
sz = sizeof(Elf64_Nhdr) +
- ((nhdr_ptr->n_namesz + 3) & ~3) +
- ((nhdr_ptr->n_descsz + 3) & ~3);
+ (((u64)nhdr_ptr->n_namesz + 3) & ~3) +
+ (((u64)nhdr_ptr->n_descsz + 3) & ~3);
if ((real_sz + sz) > max_sz) {
pr_warn("Warning: Exceeded p_memsz, dropping PT_NOTE entry n_namesz=0x%x, n_descsz=0x%x\n",
nhdr_ptr->n_namesz, nhdr_ptr->n_descsz);
@@ -732,8 +732,8 @@ static int __init update_note_header_size_elf32(const Elf32_Ehdr *ehdr_ptr)
nhdr_ptr = notes_section;
while (nhdr_ptr->n_namesz != 0) {
sz = sizeof(Elf32_Nhdr) +
- ((nhdr_ptr->n_namesz + 3) & ~3) +
- ((nhdr_ptr->n_descsz + 3) & ~3);
+ (((u64)nhdr_ptr->n_namesz + 3) & ~3) +
+ (((u64)nhdr_ptr->n_descsz + 3) & ~3);
if ((real_sz + sz) > max_sz) {
pr_warn("Warning: Exceeded p_memsz, dropping PT_NOTE entry n_namesz=0x%x, n_descsz=0x%x\n",
nhdr_ptr->n_namesz, nhdr_ptr->n_descsz);
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