3f65ce4d14
The attached patches provides part 5 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
77 lines
1.3 KiB
C
77 lines
1.3 KiB
C
/*
|
|
* arch/xtensa/mm/fault.c
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2001 - 2005 Tensilica Inc.
|
|
*
|
|
* Chris Zankel <chris@zankel.net>
|
|
*/
|
|
|
|
#if (DCACHE_SIZE > PAGE_SIZE)
|
|
|
|
pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
|
|
{
|
|
pte_t *pte, p;
|
|
int color = ADDR_COLOR(address);
|
|
int i;
|
|
|
|
p = (pte_t*) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, COLOR_ORDER);
|
|
|
|
if (likely(p)) {
|
|
struct page *page;
|
|
|
|
for (i = 0; i < COLOR_SIZE; i++, p++) {
|
|
page = virt_to_page(pte);
|
|
|
|
set_page_count(page, 1);
|
|
ClearPageCompound(page);
|
|
|
|
if (ADDR_COLOR(p) == color)
|
|
pte = p;
|
|
else
|
|
free_page(p);
|
|
}
|
|
clear_page(pte);
|
|
}
|
|
return pte;
|
|
}
|
|
|
|
#ifdef PROFILING
|
|
|
|
int mask;
|
|
int hit;
|
|
int flush;
|
|
|
|
#endif
|
|
|
|
struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address)
|
|
{
|
|
struct page *page, p;
|
|
int color = ADDR_COLOR(address);
|
|
|
|
p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
|
|
|
|
if (likely(p)) {
|
|
for (i = 0; i < PAGE_ORDER; i++) {
|
|
set_page_count(p, 1);
|
|
ClearPageCompound(p);
|
|
|
|
if (PADDR_COLOR(page_address(pg)) == color)
|
|
page = p;
|
|
else
|
|
free_page(p);
|
|
}
|
|
clear_highpage(page);
|
|
}
|
|
|
|
return page;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|