diff options
| author | Russell King <rmk@flint.arm.linux.org.uk> | 2004-09-07 16:45:36 +0100 |
|---|---|---|
| committer | Russell King <rmk@flint.arm.linux.org.uk> | 2004-09-07 16:45:36 +0100 |
| commit | 71432e79b76bc0d8b6a5a4a515b2cf19b5405e4a (patch) | |
| tree | 3db9013b6e180a362d4b37216c81b994aa4fc075 /include | |
| parent | 86afe9ae4d1a89b7e4b46b86867b3d75e2e320a9 (diff) | |
[ARM] Add flush_cache_user_page() for sys_cacheflush()
Add flush_cache_user_page() to handle sys_cacheflush. Userspace
wants to use this call to ensure I/D cache coherency for runtime-
built code (eg, used by Java etc). This does not fit well with
the purpose of flush_cache_range(), so provide
flush_cache_user_range() instead.
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-arm/cacheflush.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h index 84d875206dad..9cfb98c191c1 100644 --- a/include/asm-arm/cacheflush.h +++ b/include/asm-arm/cacheflush.h @@ -157,6 +157,7 @@ struct cpu_cache_fns { void (*flush_user_range)(unsigned long, unsigned long, unsigned int); void (*coherent_kern_range)(unsigned long, unsigned long); + void (*coherent_user_range)(unsigned long, unsigned long); void (*flush_kern_dcache_page)(void *); void (*dma_inv_range)(unsigned long, unsigned long); @@ -175,6 +176,7 @@ extern struct cpu_cache_fns cpu_cache; #define __cpuc_flush_user_all cpu_cache.flush_user_all #define __cpuc_flush_user_range cpu_cache.flush_user_range #define __cpuc_coherent_kern_range cpu_cache.coherent_kern_range +#define __cpuc_coherent_user_range cpu_cache.coherent_user_range #define __cpuc_flush_dcache_page cpu_cache.flush_kern_dcache_page /* @@ -193,12 +195,14 @@ extern struct cpu_cache_fns cpu_cache; #define __cpuc_flush_user_all __glue(_CACHE,_flush_user_cache_all) #define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range) #define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range) +#define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range) #define __cpuc_flush_dcache_page __glue(_CACHE,_flush_kern_dcache_page) extern void __cpuc_flush_kern_all(void); extern void __cpuc_flush_user_all(void); extern void __cpuc_flush_user_range(unsigned long, unsigned long, unsigned int); extern void __cpuc_coherent_kern_range(unsigned long, unsigned long); +extern void __cpuc_coherent_user_range(unsigned long, unsigned long); extern void __cpuc_flush_dcache_page(void *); /* @@ -268,6 +272,14 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr) } /* + * flush_cache_user_range is used when we want to ensure that the + * Harvard caches are synchronised for the user space address range. + * This is used for the ARM private sys_cacheflush system call. + */ +#define flush_cache_user_range(vma,start,end) \ + __cpuc_coherent_user_range((start) & PAGE_MASK, PAGE_ALIGN(end)) + +/* * Perform necessary cache operations to ensure that data previously * stored within this range of addresses can be executed by the CPU. */ |