blob: c864519117c71581da59bc733ef740c1df1cc9fa (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#include <asm/shmparam.h>
extern void flush_dcache_page(struct page *page);
static inline unsigned long pages_do_alias(unsigned long addr1,
unsigned long addr2)
{
return (addr1 ^ addr2) & (SHMLBA-1);
}
static inline void clear_user_page(void *addr, unsigned long vaddr,
struct page *page)
{
clear_page(addr);
if (pages_do_alias((unsigned long) addr, vaddr & PAGE_MASK))
flush_dcache_page(page);
}
static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
struct page *page)
{
copy_page(to, from);
if (pages_do_alias((unsigned long) to, vaddr & PAGE_MASK))
flush_dcache_page(page);
}
|
