From 930fc45a49ddebe7555cc5c837d82b9c27e65ff4 Mon Sep 17 00:00:00 2001
From: Christoph Lameter <clameter@engr.sgi.com>
Date: Sat, 29 Oct 2005 18:15:41 -0700
Subject: [PATCH] [PATCH] vmalloc_node
This patch adds
vmalloc_node(size, node) -> Allocate necessary memory on the specified node
and
get_vm_area_node(size, flags, node)
and the other functions that it depends on.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
include/linux/vmalloc.h | 8 ++++-
mm/vmalloc.c | 73 ++++++++++++++++++++++++++++++++---------
2 files changed, 64 insertions(+), 17 deletions(-)
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 3701a0673d2cd..1d5577b2b7523 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -32,10 +32,14 @@ struct vm_struct {
* Highlevel APIs for driver use
*/
extern void *vmalloc(unsigned long size);
+extern void *vmalloc_node(unsigned long size, int node);
extern void *vmalloc_exec(unsigned long size);
extern void *vmalloc_32(unsigned long size);
extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
-extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot);
+extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
+ pgprot_t prot);
+extern void *__vmalloc_node(unsigned long size, gfp_t gfp_mask,
+ pgprot_t prot, int node);
extern void vfree(void *addr);
extern void *vmap(struct page **pages, unsigned int count,
@@ -48,6 +52,8 @@ extern void vunmap(void *addr);
extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
unsigned long start, unsigned long end);
+extern struct vm_struct *get_vm_area_node(unsigned long size,
+ unsigned long flags, int node);
extern struct vm_struct *remove_vm_area(void *addr);
extern struct vm_struct *__remove_vm_area(void *addr);
extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 1150229b63663..5e91205987999 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -5,6 +5,7 @@
* Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
* SMP-safe vmalloc/vfree/ioremap, Tigran Aivazian <tigran@veritas.com>, May 2000
* Major rework to support vmap/vunmap, Christoph Hellwig, SGI, August 2002
+ * Numa awareness, Christoph Lameter, SGI, June 2005
*/
#include <linux/mm.h>
@@ -158,8 +159,8 @@ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
return err;
}
-struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
- unsigned long start, unsigned long end)
+struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags,
+ unsigned long start, unsigned long end, int node)
{
struct vm_struct **p, *tmp, *area;
unsigned long align = 1;
@@ -178,7 +179,7 @@ struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
addr = ALIGN(start, align);
size = PAGE_ALIGN(size);
- area = kmalloc(sizeof(*area), GFP_KERNEL);
+ area = kmalloc_node(sizeof(*area), GFP_KERNEL, node);
if (unlikely(!area))
return NULL;
@@ -231,6 +232,12 @@ struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
return NULL;
}
+struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
+ unsigned long start, unsigned long end)
+{
+ return __get_vm_area_node(size, flags, start, end, -1);
+}
+
/**
* get_vm_area - reserve a contingous kernel virtual area
*
@@ -246,6 +253,11 @@ struct vm_struct *get_vm_area(unsigned long size, unsigned long flags)
return __get_vm_area(size, flags, VMALLOC_START, VMALLOC_END);
}
+struct vm_struct *get_vm_area_node(unsigned long size, unsigned long flags, int node)
+{
+ return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END, node);
+}
+
/* Caller must hold vmlist_lock */
struct vm_struct *__remove_vm_area(void *addr)
{
@@ -342,7 +354,6 @@ void vfree(void *addr)
BUG_ON(in_interrupt());
__vunmap(addr, 1);
}
-
EXPORT_SYMBOL(vfree);
/**
@@ -360,7 +371,6 @@ void vunmap(void *addr)
BUG_ON(in_interrupt());
__vunmap(addr, 0);
}
-
EXPORT_SYMBOL(vunmap);
/**
@@ -392,10 +402,10 @@ void *vmap(struct page **pages, unsigned int count,
return area->addr;
}
-
EXPORT_SYMBOL(vmap);
-void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
+void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
+ pgprot_t prot, int node)
{
struct page **pages;
unsigned int nr_pages, array_size, i;
@@ -406,9 +416,9 @@ void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
area->nr_pages = nr_pages;
/* Please note that the recursion is strictly bounded. */
if (array_size > PAGE_SIZE)
- pages = __vmalloc(array_size, gfp_mask, PAGE_KERNEL);
+ pages = __vmalloc_node(array_size, gfp_mask, PAGE_KERNEL, node);
else
- pages = kmalloc(array_size, (gfp_mask & ~__GFP_HIGHMEM));
+ pages = kmalloc_node(array_size, (gfp_mask & ~__GFP_HIGHMEM), node);
area->pages = pages;
if (!area->pages) {
remove_vm_area(area->addr);
@@ -418,7 +428,10 @@ void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
memset(area->pages, 0, array_size);
for (i = 0; i < area->nr_pages; i++) {
- area->pages[i] = alloc_page(gfp_mask);
+ if (node < 0)
+ area->pages[i] = alloc_page(gfp_mask);
+ else
+ area->pages[i] = alloc_pages_node(node, gfp_mask, 0);
if (unlikely(!area->pages[i])) {
/* Successfully allocated i pages, free them in __vunmap() */
area->nr_pages = i;
@@ -435,18 +448,25 @@ void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
return NULL;
}
+void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
+{
+ return __vmalloc_area_node(area, gfp_mask, prot, -1);
+}
+
/**
- * __vmalloc - allocate virtually contiguous memory
+ * __vmalloc_node - allocate virtually contiguous memory
*
* @size: allocation size
* @gfp_mask: flags for the page level allocator
* @prot: protection mask for the allocated pages
+ * @node node to use for allocation or -1
*
* Allocate enough pages to cover @size from the page level
* allocator with @gfp_mask flags. Map them into contiguous
* kernel virtual space, using a pagetable protection of @prot.
*/
-void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
+void *__vmalloc_node(unsigned long size, gfp_t gfp_mask, pgprot_t prot,
+ int node)
{
struct vm_struct *area;
@@ -454,13 +474,18 @@ void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
if (!size || (size >> PAGE_SHIFT) > num_physpages)
return NULL;
- area = get_vm_area(size, VM_ALLOC);
+ area = get_vm_area_node(size, VM_ALLOC, node);
if (!area)
return NULL;
- return __vmalloc_area(area, gfp_mask, prot);
+ return __vmalloc_area_node(area, gfp_mask, prot, node);
}
+EXPORT_SYMBOL(__vmalloc_node);
+void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
+{
+ return __vmalloc_node(size, gfp_mask, prot, -1);
+}
EXPORT_SYMBOL(__vmalloc);
/**
@@ -478,9 +503,26 @@ void *vmalloc(unsigned long size)
{
return __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL);
}
-
EXPORT_SYMBOL(vmalloc);
+/**
+ * vmalloc_node - allocate memory on a specific node
+ *
+ * @size: allocation size
+ * @node; numa node
+ *
+ * Allocate enough pages to cover @size from the page level
+ * allocator and map them into contiguous kernel virtual space.
+ *
+ * For tight cotrol over page level allocator and protection flags
+ * use __vmalloc() instead.
+ */
+void *vmalloc_node(unsigned long size, int node)
+{
+ return __vmalloc_node(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL, node);
+}
+EXPORT_SYMBOL(vmalloc_node);
+
#ifndef PAGE_KERNEL_EXEC
# define PAGE_KERNEL_EXEC PAGE_KERNEL
#endif
@@ -515,7 +557,6 @@ void *vmalloc_32(unsigned long size)
{
return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL);
}
-
EXPORT_SYMBOL(vmalloc_32);
long vread(char *buf, char *addr, unsigned long count)
--
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