diff options
| -rw-r--r-- | arch/powerpc/platforms/powernv/memtrace.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index b99283df8584..f73101119eba 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -47,38 +47,9 @@ static ssize_t memtrace_read(struct file *filp, char __user *ubuf, return simple_read_from_buffer(ubuf, count, ppos, ent->mem, ent->size); } -static bool valid_memtrace_range(struct memtrace_entry *dev, - unsigned long start, unsigned long size) -{ - if ((start >= dev->start) && - ((start + size) <= (dev->start + dev->size))) - return true; - - return false; -} - -static int memtrace_mmap(struct file *filp, struct vm_area_struct *vma) -{ - unsigned long size = vma->vm_end - vma->vm_start; - struct memtrace_entry *dev = filp->private_data; - - if (!valid_memtrace_range(dev, vma->vm_pgoff << PAGE_SHIFT, size)) - return -EINVAL; - - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - if (remap_pfn_range(vma, vma->vm_start, - vma->vm_pgoff + (dev->start >> PAGE_SHIFT), - size, vma->vm_page_prot)) - return -EAGAIN; - - return 0; -} - static const struct file_operations memtrace_fops = { .llseek = default_llseek, .read = memtrace_read, - .mmap = memtrace_mmap, .open = simple_open, }; |