[RFC PATCH V2 05/10] arm64: Re-factor flush_ptrace_access
Pratyush Anand
panand at redhat.com
Wed Jun 17 20:58:52 PDT 2015
Re-factor flush_ptrace_access to reuse vma independent part, which is
needed for functions like arch_uprobe_copy_ixol where we do not have
a vma.
Signed-off-by: Pratyush Anand <panand at redhat.com>
---
arch/arm64/mm/flush.c | 24 +++++++++++++++---------
1 file changed, 15 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c
index b6f14e8d2121..9a4dd6f39cfb 100644
--- a/arch/arm64/mm/flush.c
+++ b/arch/arm64/mm/flush.c
@@ -34,19 +34,25 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
__flush_icache_all();
}
+static void __flush_ptrace_access(struct page *page, unsigned long uaddr,
+ void *kaddr, unsigned long len)
+{
+ unsigned long addr = (unsigned long)kaddr;
+
+ if (icache_is_aliasing()) {
+ __flush_dcache_area(kaddr, len);
+ __flush_icache_all();
+ } else {
+ flush_icache_range(addr, addr + len);
+ }
+}
+
static void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
unsigned long uaddr, void *kaddr,
unsigned long len)
{
- if (vma->vm_flags & VM_EXEC) {
- unsigned long addr = (unsigned long)kaddr;
- if (icache_is_aliasing()) {
- __flush_dcache_area(kaddr, len);
- __flush_icache_all();
- } else {
- flush_icache_range(addr, addr + len);
- }
- }
+ if (vma->vm_flags & VM_EXEC)
+ __flush_ptrace_access(page, uaddr, kaddr, len);
}
/*
--
2.1.0
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