From df849a1529c106f7460e51479ca78fe07b07dc8c Mon Sep 17 00:00:00 2001
From: Christoph Lameter <clameter@sgi.com>
Date: Fri, 30 Jun 2006 01:55:38 -0700
Subject: [PATCH] [PATCH] zoned vm counters: conversion of nr_pagetables to per
zone counter
Conversion of nr_page_table_pages to a per zone counter
[akpm@osdl.org: bugfix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/arm/mm/mm-armv.c | 2 +-
arch/i386/mm/pgtable.c | 3 ++-
arch/um/kernel/skas/mmu.c | 2 +-
drivers/base/node.c | 2 ++
fs/proc/proc_misc.c | 4 ++--
include/linux/mmzone.h | 1 +
include/linux/vmstat.h | 3 +--
mm/memory.c | 4 ++--
mm/page_alloc.c | 2 +-
mm/vmstat.c | 2 +-
10 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c
index 95273de4f7725..931be1798122f 100644
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -227,7 +227,7 @@ void free_pgd_slow(pgd_t *pgd)
pte = pmd_page(*pmd);
pmd_clear(pmd);
- dec_page_state(nr_page_table_pages);
+ dec_zone_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
pte_lock_deinit(pte);
pte_free(pte);
pmd_free(pmd);
diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c
index 73ac3599a0eac..0bb1e5c134422 100644
--- a/arch/i386/mm/pgtable.c
+++ b/arch/i386/mm/pgtable.c
@@ -63,7 +63,8 @@ void show_mem(void)
printk(KERN_INFO "%lu pages writeback\n", ps.nr_writeback);
printk(KERN_INFO "%lu pages mapped\n", global_page_state(NR_FILE_MAPPED));
printk(KERN_INFO "%lu pages slab\n", global_page_state(NR_SLAB));
- printk(KERN_INFO "%lu pages pagetables\n", ps.nr_page_table_pages);
+ printk(KERN_INFO "%lu pages pagetables\n",
+ global_page_state(NR_PAGETABLE));
}
/*
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index c5c9885a82979..624ca238d1fd3 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -152,7 +152,7 @@ void destroy_context_skas(struct mm_struct *mm)
free_page(mmu->id.stack);
pte_lock_deinit(virt_to_page(mmu->last_page_table));
pte_free_kernel((pte_t *) mmu->last_page_table);
- dec_page_state(nr_page_table_pages);
+ dec_zone_page_state(virt_to_page(mmu->last_page_table), NR_PAGETABLE);
#ifdef CONFIG_3_LEVEL_PGTABLES
pmd_free((pmd_t *) mmu->last_pmd);
#endif
diff --git a/drivers/base/node.c b/drivers/base/node.c
index db116a8791c88..c22fb67ec50c0 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -70,6 +70,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
"Node %d FilePages: %8lu kB\n"
"Node %d Mapped: %8lu kB\n"
"Node %d AnonPages: %8lu kB\n"
+ "Node %d PageTables: %8lu kB\n"
"Node %d Slab: %8lu kB\n",
nid, K(i.totalram),
nid, K(i.freeram),
@@ -85,6 +86,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
nid, K(node_page_state(nid, NR_FILE_PAGES)),
nid, K(node_page_state(nid, NR_FILE_MAPPED)),
nid, K(node_page_state(nid, NR_ANON_PAGES)),
+ nid, K(node_page_state(nid, NR_PAGETABLE)),
nid, K(node_page_state(nid, NR_SLAB)));
n += hugetlb_report_node_meminfo(nid, buf + n);
return n;
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 16aaf7187bb32..0eae68f842106 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -171,9 +171,9 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
"AnonPages: %8lu kB\n"
"Mapped: %8lu kB\n"
"Slab: %8lu kB\n"
+ "PageTables: %8lu kB\n"
"CommitLimit: %8lu kB\n"
"Committed_AS: %8lu kB\n"
- "PageTables: %8lu kB\n"
"VmallocTotal: %8lu kB\n"
"VmallocUsed: %8lu kB\n"
"VmallocChunk: %8lu kB\n",
@@ -195,9 +195,9 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
K(global_page_state(NR_ANON_PAGES)),
K(global_page_state(NR_FILE_MAPPED)),
K(global_page_state(NR_SLAB)),
+ K(global_page_state(NR_PAGETABLE)),
K(allowed),
K(committed),
- K(ps.nr_page_table_pages),
(unsigned long)VMALLOC_TOTAL >> 10,
vmi.used >> 10,
vmi.largest_chunk >> 10
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 67e03fc8533e6..15adb435f2406 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -52,6 +52,7 @@ enum zone_stat_item {
only modified from process context */
NR_FILE_PAGES,
NR_SLAB, /* Pages used by slab allocator */
+ NR_PAGETABLE, /* used for pagetables */
NR_VM_ZONE_STAT_ITEMS };
struct per_cpu_pages {
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 4b97381a2937a..56220441d7c92 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -25,8 +25,7 @@ struct page_state {
unsigned long nr_dirty; /* Dirty writeable pages */
unsigned long nr_writeback; /* Pages under writeback */
unsigned long nr_unstable; /* NFS unstable pages */
- unsigned long nr_page_table_pages;/* Pages used for pagetables */
-#define GET_PAGE_STATE_LAST nr_page_table_pages
+#define GET_PAGE_STATE_LAST nr_unstable
/*
* The below are zeroed by get_page_state(). Use get_full_page_state()
diff --git a/mm/memory.c b/mm/memory.c
index 247b5c312b9b0..1a78791590fad 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -126,7 +126,7 @@ static void free_pte_range(struct mmu_gather *tlb, pmd_t *pmd)
pmd_clear(pmd);
pte_lock_deinit(page);
pte_free_tlb(tlb, page);
- dec_page_state(nr_page_table_pages);
+ dec_zone_page_state(page, NR_PAGETABLE);
tlb->mm->nr_ptes--;
}
@@ -311,7 +311,7 @@ int __pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long address)
pte_free(new);
} else {
mm->nr_ptes++;
- inc_page_state(nr_page_table_pages);
+ inc_zone_page_state(new, NR_PAGETABLE);
pmd_populate(mm, pmd, new);
}
spin_unlock(&mm->page_table_lock);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a38a11cfb4834..ed3f2a7b40713 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1320,7 +1320,7 @@ void show_free_areas(void)
nr_free_pages(),
global_page_state(NR_SLAB),
global_page_state(NR_FILE_MAPPED),
- ps.nr_page_table_pages);
+ global_page_state(NR_PAGETABLE));
for_each_zone(zone) {
int i;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index dc9e692092230..292a35fe56c93 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -399,12 +399,12 @@ static char *vmstat_text[] = {
"nr_mapped",
"nr_file_pages",
"nr_slab",
+ "nr_page_table_pages",
/* Page state */
"nr_dirty",
"nr_writeback",
"nr_unstable",
- "nr_page_table_pages",
"pgpgin",
"pgpgout",
--
GitLab