xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/lib: Implement UACCESS_FLUSHCACHE API

Browse Source 
Implement the architecture specific portitions of the UACCESS_FLUSHCACHE
API. This provides functions for the copy_user_flushcache iterator that
ensure that when the copy is finished the destination buffer contains
a copy of the original and that the destination buffer is clean in the
processor caches.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Oliver O'Halloran
2017-10-19 18:13:55 +11:00
committed by Michael Ellerman
parent 32ce3862af
commit 6c44741d75
4 changed files with 41 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/include/asm/string.h
View File

@@ -11,6 +11,7 @@
#define __HAVE_ARCH_MEMCMP
#define __HAVE_ARCH_MEMCHR
#define __HAVE_ARCH_MEMSET16
#define __HAVE_ARCH_MEMCPY_FLUSHCACHE
extern char * strcpy(char *,const char *);
extern char * strncpy(char *,const char *, __kernel_size_t);
@@ -23,6 +24,7 @@ extern void * memcpy(void *,const void *,__kernel_size_t);
extern void * memmove(void *,const void *,__kernel_size_t);
extern int memcmp(const void *,const void *,__kernel_size_t);
extern void * memchr(const void *,int,__kernel_size_t);
extern void * memcpy_flushcache(void *,const void *,__kernel_size_t);
#ifdef CONFIG_PPC64
#define __HAVE_ARCH_MEMSET32