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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Rename generic_page_range as apply_to_page_range, export the symbol
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID bd108ccc38a021ba40462b1bb01e50ce80f0631f
# Parent 401624a17ef7442f38b28a0cedc129a91da5d67e
Rename generic_page_range as apply_to_page_range, export the symbol
to GPL modules. Rename pte_page parameter to pmd_page (following the
Linux idiom). apply_to_pte_range() should take the pte spinlock.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
diff -r 401624a17ef7 -r bd108ccc38a0
linux-2.6-xen-sparse/arch/i386/mm/ioremap-xen.c
--- a/linux-2.6-xen-sparse/arch/i386/mm/ioremap-xen.c Thu Mar 23 13:45:21 2006
+++ b/linux-2.6-xen-sparse/arch/i386/mm/ioremap-xen.c Thu Mar 23 14:30:00 2006
@@ -32,13 +32,13 @@
#endif
static int direct_remap_area_pte_fn(pte_t *pte,
- struct page *pte_page,
+ struct page *pmd_page,
unsigned long address,
void *data)
{
mmu_update_t **v = (mmu_update_t **)data;
- (*v)->ptr = ((u64)pfn_to_mfn(page_to_pfn(pte_page)) <<
+ (*v)->ptr = ((u64)pfn_to_mfn(page_to_pfn(pmd_page)) <<
PAGE_SHIFT) | ((unsigned long)pte & ~PAGE_MASK);
(*v)++;
@@ -67,9 +67,9 @@
for (i = 0; i < size; i += PAGE_SIZE) {
if ((v - u) == (PAGE_SIZE / sizeof(mmu_update_t))) {
/* Fill in the PTE pointers. */
- rc = generic_page_range(mm, start_address,
- address - start_address,
- direct_remap_area_pte_fn, &w);
+ rc = apply_to_page_range(mm, start_address,
+ address - start_address,
+ direct_remap_area_pte_fn, &w);
if (rc)
goto out;
w = u;
@@ -93,8 +93,9 @@
if (v != u) {
/* get the ptep's filled in */
- rc = generic_page_range(mm, start_address, address -
start_address,
- direct_remap_area_pte_fn, &w);
+ rc = apply_to_page_range(mm, start_address,
+ address - start_address,
+ direct_remap_area_pte_fn, &w);
if (rc)
goto out;
rc = -EFAULT;
@@ -142,11 +143,11 @@
EXPORT_SYMBOL(direct_kernel_remap_pfn_range);
static int lookup_pte_fn(
- pte_t *pte, struct page *pte_page, unsigned long addr, void *data)
+ pte_t *pte, struct page *pmd_page, unsigned long addr, void *data)
{
uint64_t *ptep = (uint64_t *)data;
if (ptep)
- *ptep = ((uint64_t)pfn_to_mfn(page_to_pfn(pte_page)) <<
+ *ptep = ((uint64_t)pfn_to_mfn(page_to_pfn(pmd_page)) <<
PAGE_SHIFT) | ((unsigned long)pte & ~PAGE_MASK);
return 0;
}
@@ -155,13 +156,14 @@
unsigned long address,
uint64_t *ptep)
{
- return generic_page_range(mm, address, PAGE_SIZE, lookup_pte_fn, ptep);
+ return apply_to_page_range(mm, address, PAGE_SIZE,
+ lookup_pte_fn, ptep);
}
EXPORT_SYMBOL(create_lookup_pte_addr);
static int noop_fn(
- pte_t *pte, struct page *pte_page, unsigned long addr, void *data)
+ pte_t *pte, struct page *pmd_page, unsigned long addr, void *data)
{
return 0;
}
@@ -170,7 +172,7 @@
unsigned long address,
unsigned long size)
{
- return generic_page_range(mm, address, size, noop_fn, NULL);
+ return apply_to_page_range(mm, address, size, noop_fn, NULL);
}
EXPORT_SYMBOL(touch_pte_range);
diff -r 401624a17ef7 -r bd108ccc38a0
linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c Thu Mar 23
13:45:21 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c Thu Mar 23
14:30:00 2006
@@ -517,7 +517,7 @@
}
static int dealloc_pte_fn(
- pte_t *pte, struct page *pte_page, unsigned long addr, void *data)
+ pte_t *pte, struct page *pmd_page, unsigned long addr, void *data)
{
unsigned long mfn = pte_mfn(*pte);
int ret;
@@ -547,8 +547,8 @@
scrub_pages(vstart, 1 << order);
balloon_lock(flags);
- ret = generic_page_range(
- &init_mm, vstart, PAGE_SIZE << order, dealloc_pte_fn, NULL);
+ ret = apply_to_page_range(&init_mm, vstart,
+ PAGE_SIZE << order, dealloc_pte_fn, NULL);
BUG_ON(ret);
current_pages -= 1UL << order;
totalram_pages = current_pages;
diff -r 401624a17ef7 -r bd108ccc38a0
linux-2.6-xen-sparse/drivers/xen/core/gnttab.c
--- a/linux-2.6-xen-sparse/drivers/xen/core/gnttab.c Thu Mar 23 13:45:21 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/core/gnttab.c Thu Mar 23 14:30:00 2006
@@ -360,7 +360,7 @@
}
#ifndef __ia64__
-static int map_pte_fn(pte_t *pte, struct page *pte_page,
+static int map_pte_fn(pte_t *pte, struct page *pmd_page,
unsigned long addr, void *data)
{
unsigned long **frames = (unsigned long **)data;
@@ -370,7 +370,7 @@
return 0;
}
-static int unmap_pte_fn(pte_t *pte, struct page *pte_page,
+static int unmap_pte_fn(pte_t *pte, struct page *pmd_page,
unsigned long addr, void *data)
{
@@ -384,6 +384,7 @@
{
gnttab_setup_table_t setup;
unsigned long frames[NR_GRANT_FRAMES];
+ int rc;
#ifndef __ia64__
void *pframes = frames;
struct vm_struct *area;
@@ -393,8 +394,8 @@
setup.nr_frames = NR_GRANT_FRAMES;
setup.frame_list = frames;
- BUG_ON(HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1));
- BUG_ON(setup.status != 0);
+ rc = HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
+ BUG_ON(rc || setup.status);
#ifndef __ia64__
if (shared == NULL) {
@@ -402,9 +403,10 @@
BUG_ON(area == NULL);
shared = area->addr;
}
- BUG_ON(generic_page_range(&init_mm, (unsigned long)shared,
- PAGE_SIZE * NR_GRANT_FRAMES,
- map_pte_fn, &pframes));
+ rc = apply_to_page_range(&init_mm, (unsigned long)shared,
+ PAGE_SIZE * NR_GRANT_FRAMES,
+ map_pte_fn, &pframes);
+ BUG_ON(rc);
#else
shared = __va(frames[0] << PAGE_SHIFT);
printk("grant table at %p\n", shared);
@@ -418,9 +420,9 @@
{
#ifndef __ia64__
- generic_page_range(&init_mm, (unsigned long)shared,
- PAGE_SIZE * NR_GRANT_FRAMES,
- unmap_pte_fn, NULL);
+ apply_to_page_range(&init_mm, (unsigned long)shared,
+ PAGE_SIZE * NR_GRANT_FRAMES,
+ unmap_pte_fn, NULL);
#endif
return 0;
diff -r 401624a17ef7 -r bd108ccc38a0 linux-2.6-xen-sparse/drivers/xen/util.c
--- a/linux-2.6-xen-sparse/drivers/xen/util.c Thu Mar 23 13:45:21 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/util.c Thu Mar 23 14:30:00 2006
@@ -6,9 +6,9 @@
#include <asm/uaccess.h>
#include <xen/driver_util.h>
-static int f(pte_t *pte, struct page *pte_page, unsigned long addr, void *data)
+static int f(pte_t *pte, struct page *pmd_page, unsigned long addr, void *data)
{
- /* generic_page_range() does all the hard work. */
+ /* apply_to_page_range() does all the hard work. */
return 0;
}
@@ -24,8 +24,8 @@
* This ensures that page tables are constructed for this region
* of kernel virtual address space and mapped into init_mm.
*/
- if (generic_page_range(&init_mm, (unsigned long)area->addr,
- area->size, f, NULL)) {
+ if (apply_to_page_range(&init_mm, (unsigned long)area->addr,
+ area->size, f, NULL)) {
free_vm_area(area);
return NULL;
}
diff -r 401624a17ef7 -r bd108ccc38a0 linux-2.6-xen-sparse/include/linux/mm.h
--- a/linux-2.6-xen-sparse/include/linux/mm.h Thu Mar 23 13:45:21 2006
+++ b/linux-2.6-xen-sparse/include/linux/mm.h Thu Mar 23 14:30:00 2006
@@ -1020,10 +1020,10 @@
#define FOLL_ANON 0x08 /* give ZERO_PAGE if no pgtable */
#ifdef CONFIG_XEN
-typedef int (*pte_fn_t)(pte_t *pte, struct page *pte_page, unsigned long addr,
- void *data);
-extern int generic_page_range(struct mm_struct *mm, unsigned long address,
- unsigned long size, pte_fn_t fn, void *data);
+typedef int (*pte_fn_t)(pte_t *pte, struct page *pmd_page, unsigned long addr,
+ void *data);
+extern int apply_to_page_range(struct mm_struct *mm, unsigned long address,
+ unsigned long size, pte_fn_t fn, void *data);
#endif
#ifdef CONFIG_PROC_FS
diff -r 401624a17ef7 -r bd108ccc38a0 linux-2.6-xen-sparse/mm/memory.c
--- a/linux-2.6-xen-sparse/mm/memory.c Thu Mar 23 13:45:21 2006
+++ b/linux-2.6-xen-sparse/mm/memory.c Thu Mar 23 14:30:00 2006
@@ -1378,36 +1378,39 @@
EXPORT_SYMBOL(remap_pfn_range);
#ifdef CONFIG_XEN
-static inline int generic_pte_range(struct mm_struct *mm, pmd_t *pmd,
- unsigned long addr, unsigned long end,
- pte_fn_t fn, void *data)
+static inline int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
+ unsigned long addr, unsigned long end,
+ pte_fn_t fn, void *data)
{
pte_t *pte;
int err;
- struct page *pte_page;
+ struct page *pmd_page;
+ spinlock_t *ptl;
pte = (mm == &init_mm) ?
pte_alloc_kernel(pmd, addr) :
- pte_alloc_map(mm, pmd, addr);
+ pte_alloc_map_lock(mm, pmd, addr, &ptl);
if (!pte)
return -ENOMEM;
- pte_page = pmd_page(*pmd);
+ BUG_ON(pmd_huge(*pmd));
+
+ pmd_page = pmd_page(*pmd);
do {
- err = fn(pte, pte_page, addr, data);
+ err = fn(pte, pmd_page, addr, data);
if (err)
break;
} while (pte++, addr += PAGE_SIZE, addr != end);
if (mm != &init_mm)
- pte_unmap(pte-1);
+ pte_unmap_unlock(pte-1, ptl);
return err;
}
-static inline int generic_pmd_range(struct mm_struct *mm, pud_t *pud,
- unsigned long addr, unsigned long end,
- pte_fn_t fn, void *data)
+static inline int apply_to_pmd_range(struct mm_struct *mm, pud_t *pud,
+ unsigned long addr, unsigned long end,
+ pte_fn_t fn, void *data)
{
pmd_t *pmd;
unsigned long next;
@@ -1418,16 +1421,16 @@
return -ENOMEM;
do {
next = pmd_addr_end(addr, end);
- err = generic_pte_range(mm, pmd, addr, next, fn, data);
+ err = apply_to_pte_range(mm, pmd, addr, next, fn, data);
if (err)
break;
} while (pmd++, addr = next, addr != end);
return err;
}
-static inline int generic_pud_range(struct mm_struct *mm, pgd_t *pgd,
- unsigned long addr, unsigned long end,
- pte_fn_t fn, void *data)
+static inline int apply_to_pud_range(struct mm_struct *mm, pgd_t *pgd,
+ unsigned long addr, unsigned long end,
+ pte_fn_t fn, void *data)
{
pud_t *pud;
unsigned long next;
@@ -1438,7 +1441,7 @@
return -ENOMEM;
do {
next = pud_addr_end(addr, end);
- err = generic_pmd_range(mm, pud, addr, next, fn, data);
+ err = apply_to_pmd_range(mm, pud, addr, next, fn, data);
if (err)
break;
} while (pud++, addr = next, addr != end);
@@ -1449,8 +1452,8 @@
* Scan a region of virtual memory, filling in page tables as necessary
* and calling a provided function on each leaf page table.
*/
-int generic_page_range(struct mm_struct *mm, unsigned long addr,
- unsigned long size, pte_fn_t fn, void *data)
+int apply_to_page_range(struct mm_struct *mm, unsigned long addr,
+ unsigned long size, pte_fn_t fn, void *data)
{
pgd_t *pgd;
unsigned long next;
@@ -1461,12 +1464,13 @@
pgd = pgd_offset(mm, addr);
do {
next = pgd_addr_end(addr, end);
- err = generic_pud_range(mm, pgd, addr, next, fn, data);
+ err = apply_to_pud_range(mm, pgd, addr, next, fn, data);
if (err)
break;
} while (pgd++, addr = next, addr != end);
return err;
}
+EXPORT_SYMBOL_GPL(apply_to_page_range);
#endif
/*
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