diff options
| author | Pratyush Anand <panand@redhat.com> | 2014-12-30 15:39:28 +0530 |
|---|---|---|
| committer | Steven Capper <steve.capper@linaro.org> | 2015-04-07 12:58:39 +0100 |
| commit | f58abc2b6c4d0c0eb42e06e502b25a2f97efb903 (patch) | |
| tree | 665e6422cb7b54879331a274284183aa2e3d0fbd | |
| parent | f3f97350d6c13bd286ec6604147d980ff19fb5c5 (diff) | |
| download | linux-f58abc2b6c4d0c0eb42e06e502b25a2f97efb903.tar.gz | |
ARM64: Re-factor flush_ptrace_access
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@redhat.com>
Signed-off-by: Steve Capper <steve.capper@linaro.org>
| -rw-r--r-- | arch/arm64/mm/flush.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c index b6f14e8d212..9a4dd6f39cf 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); } /* |