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[MIPS] Handle aliases in vmalloc correctly. 

flush_cache_vmap / flush_cache_vunmap were calling flush_cache_all which -
having been deprecated - turned into a nop ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2008-04-05 15:13:23 +01:00
parent 950b0d2837
commit 9c5a3d729c
4 changed files with 48 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/mips/mm/c-r4k.c
View File

@ -361,6 +361,16 @@ static inline int has_valid_asid(const struct mm_struct *mm)
#endif
}
static void r4k__flush_cache_vmap(void)
{
r4k_blast_dcache();
}
static void r4k__flush_cache_vunmap(void)
{
r4k_blast_dcache();
}
static inline void local_r4k_flush_cache_range(void * args)
{
struct vm_area_struct *vma = args;
@ -1281,6 +1291,10 @@ void __cpuinit r4k_cache_init(void)
PAGE_SIZE - 1);
else
shm_align_mask = PAGE_SIZE-1;
__flush_cache_vmap = r4k__flush_cache_vmap;
__flush_cache_vunmap = r4k__flush_cache_vunmap;
flush_cache_all = cache_noop;
__flush_cache_all = r4k___flush_cache_all;
flush_cache_mm = r4k_flush_cache_mm;

15
arch/mips/mm/c-tx39.c
View File

@ -122,6 +122,16 @@ static inline void tx39_blast_icache(void)
local_irq_restore(flags);
}
static void tx39__flush_cache_vmap(void)
{
tx39_blast_dcache();
}
static void tx39__flush_cache_vunmap(void)
{
tx39_blast_dcache();
}
static inline void tx39_flush_cache_all(void)
{
if (!cpu_has_dc_aliases)
@ -344,6 +354,8 @@ void __cpuinit tx39_cache_init(void)
switch (current_cpu_type()) {
case CPU_TX3912:
/* TX39/H core (writethru direct-map cache) */
__flush_cache_vmap = tx39__flush_cache_vmap;
__flush_cache_vunmap = tx39__flush_cache_vunmap;
flush_cache_all = tx39h_flush_icache_all;
__flush_cache_all = tx39h_flush_icache_all;
flush_cache_mm = (void *) tx39h_flush_icache_all;
@ -369,6 +381,9 @@ void __cpuinit tx39_cache_init(void)
write_c0_wired(0); /* set 8 on reset... */
/* board-dependent init code may set WBON */
__flush_cache_vmap = tx39__flush_cache_vmap;
__flush_cache_vunmap = tx39__flush_cache_vunmap;
flush_cache_all = tx39_flush_cache_all;
__flush_cache_all = tx39___flush_cache_all;
flush_cache_mm = tx39_flush_cache_mm;

3
arch/mips/mm/cache.c
View File

@ -30,6 +30,9 @@ void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
unsigned long pfn);
void (*flush_icache_range)(unsigned long start, unsigned long end);
void (*__flush_cache_vmap)(void);
void (*__flush_cache_vunmap)(void);
/* MIPS specific cache operations */
void (*flush_cache_sigtramp)(unsigned long addr);
void (*local_flush_data_cache_page)(void * addr);

18
include/asm-mips/cacheflush.h
View File

@ -63,8 +63,22 @@ static inline void flush_icache_page(struct vm_area_struct *vma,
}
extern void (*flush_icache_range)(unsigned long start, unsigned long end);
#define flush_cache_vmap(start, end) flush_cache_all()
#define flush_cache_vunmap(start, end) flush_cache_all()
extern void (*__flush_cache_vmap)(void);
static inline void flush_cache_vmap(unsigned long start, unsigned long end)
{
if (cpu_has_dc_aliases)
__flush_cache_vmap();
}
extern void (*__flush_cache_vunmap)(void);
static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
{
if (cpu_has_dc_aliases)
__flush_cache_vunmap();
}
extern void copy_to_user_page(struct vm_area_struct *vma,
struct page *page, unsigned long vaddr, void *dst, const void *src,