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authorOleg Nesterov <oleg@redhat.com>2012-07-29 20:22:47 +0200
committerIngo Molnar <mingo@kernel.org>2012-07-30 11:27:25 +0200
commit57683f72b8c01c53c85fe13e82fe1feb3a06bcd5 (patch)
tree87014149ef710e9f3c0af87cd6ec3118fc4eb723 /kernel
parentf4d6dfe55115efe981b4b5f37183ddccaaa792f0 (diff)
downloadop-kernel-dev-57683f72b8c01c53c85fe13e82fe1feb3a06bcd5.zip
op-kernel-dev-57683f72b8c01c53c85fe13e82fe1feb3a06bcd5.tar.gz
uprobes: Rename vma_address() and make it return "unsigned long"
1. vma_address() returns loff_t, this looks confusing and this is unnecessary after the previous change. Make it return "ulong", all callers truncate the result anyway. 2. Its name conflicts with mm/rmap.c:vma_address(), rename it to offset_to_vaddr(), this matches vaddr_to_offset(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar.vnet.ibm.com> Cc: Anton Arapov <anton@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20120729182247.GA20365@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/events/uprobes.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index cdc3c95..bb30a4f 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -112,14 +112,9 @@ static bool valid_vma(struct vm_area_struct *vma, bool is_register)
return false;
}
-static loff_t vma_address(struct vm_area_struct *vma, loff_t offset)
+static unsigned long offset_to_vaddr(struct vm_area_struct *vma, loff_t offset)
{
- loff_t vaddr;
-
- vaddr = vma->vm_start + offset;
- vaddr -= (loff_t)vma->vm_pgoff << PAGE_SHIFT;
-
- return vaddr;
+ return vma->vm_start + offset - ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
}
static loff_t vaddr_to_offset(struct vm_area_struct *vma, unsigned long vaddr)
@@ -775,7 +770,7 @@ build_map_info(struct address_space *mapping, loff_t offset, bool is_register)
curr = info;
info->mm = vma->vm_mm;
- info->vaddr = vma_address(vma, offset);
+ info->vaddr = offset_to_vaddr(vma, offset);
}
mutex_unlock(&mapping->i_mmap_mutex);
@@ -1042,7 +1037,7 @@ int uprobe_mmap(struct vm_area_struct *vma)
list_for_each_entry_safe(uprobe, u, &tmp_list, pending_list) {
if (!ret) {
- loff_t vaddr = vma_address(vma, uprobe->offset);
+ unsigned long vaddr = offset_to_vaddr(vma, uprobe->offset);
ret = install_breakpoint(uprobe, vma->vm_mm, vma, vaddr);
/*
@@ -1103,7 +1098,7 @@ void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned lon
build_probe_list(inode, vma, start, end, &tmp_list);
list_for_each_entry_safe(uprobe, u, &tmp_list, pending_list) {
- loff_t vaddr = vma_address(vma, uprobe->offset);
+ unsigned long vaddr = offset_to_vaddr(vma, uprobe->offset);
/*
* An unregister could have removed the probe before
* unmap. So check before we decrement the count.
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