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ARM: Avoid duplicated implementation for VIVT cache flushing

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We had two copies of the wrapper code for VIVT cache flushing - one in
asm/cacheflush.h and one in arch/arm/mm/flush.c.  Reduce this down to
one common copy.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2009-10-25 10:40:02 +00:00
parent 29e553631b
commit 2f0b192633
2 changed files with 19 additions and 18 deletions
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20
arch/arm/include/asm/cacheflush.h
View File

@ -331,15 +331,15 @@ static inline void outer_flush_range(unsigned long start, unsigned long end)
* Convert calls to our calling convention.
*/
#define flush_cache_all() __cpuc_flush_kern_all()
#ifndef CONFIG_CPU_CACHE_VIPT
static inline void flush_cache_mm(struct mm_struct *mm)
static inline void vivt_flush_cache_mm(struct mm_struct *mm)
{
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)))
__cpuc_flush_user_all();
}
static inline void
flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
vivt_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
{
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)))
__cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
@ -347,7 +347,7 @@ flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long
}
static inline void
flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
vivt_flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
{
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
unsigned long addr = user_addr & PAGE_MASK;
@ -356,7 +356,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned l
}
static inline void
flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
vivt_flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
unsigned long uaddr, void *kaddr,
unsigned long len, int write)
{
@ -365,6 +365,16 @@ flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
__cpuc_coherent_kern_range(addr, addr + len);
}
}
#ifndef CONFIG_CPU_CACHE_VIPT
#define flush_cache_mm(mm) \
vivt_flush_cache_mm(mm)
#define flush_cache_range(vma,start,end) \
vivt_flush_cache_range(vma,start,end)
#define flush_cache_page(vma,addr,pfn) \
vivt_flush_cache_page(vma,addr,pfn)
#define flush_ptrace_access(vma,page,ua,ka,len,write) \
vivt_flush_ptrace_access(vma,page,ua,ka,len,write)
#else
extern void flush_cache_mm(struct mm_struct *mm);
extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);

17
arch/arm/mm/flush.c
View File

@ -41,8 +41,7 @@ static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
void flush_cache_mm(struct mm_struct *mm)
{
if (cache_is_vivt()) {
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)))
__cpuc_flush_user_all();
vivt_flush_cache_mm(mm);
return;
}
@ -59,9 +58,7 @@ void flush_cache_mm(struct mm_struct *mm)
void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
{
if (cache_is_vivt()) {
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)))
__cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
vma->vm_flags);
vivt_flush_cache_range(vma, start, end);
return;
}
@ -78,10 +75,7 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned
void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
{
if (cache_is_vivt()) {
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
unsigned long addr = user_addr & PAGE_MASK;
__cpuc_flush_user_range(addr, addr + PAGE_SIZE, vma->vm_flags);
}
vivt_flush_cache_page(vma, user_addr, pfn);
return;
}
@ -94,10 +88,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
unsigned long len, int write)
{
if (cache_is_vivt()) {
if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
unsigned long addr = (unsigned long)kaddr;
__cpuc_coherent_kern_range(addr, addr + len);
}
vivt_flush_ptrace_access(vma, page, uaddr, kaddr, len, write);
return;
}