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-rw-r--r--drivers/oprofile/buffer_sync.c17
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index f34b5b29fb95..d93b2b6b1f7a 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -216,7 +216,7 @@ static inline unsigned long fast_get_dcookie(struct path *path)
}
-/* Look up the dcookie for the task's first VM_EXECUTABLE mapping,
+/* Look up the dcookie for the task's mm->exe_file,
* which corresponds loosely to "application name". This is
* not strictly necessary but allows oprofile to associate
* shared-library samples with particular applications
@@ -224,21 +224,10 @@ static inline unsigned long fast_get_dcookie(struct path *path)
static unsigned long get_exec_dcookie(struct mm_struct *mm)
{
unsigned long cookie = NO_COOKIE;
- struct vm_area_struct *vma;
-
- if (!mm)
- goto out;
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
- if (!vma->vm_file)
- continue;
- if (!(vma->vm_flags & VM_EXECUTABLE))
- continue;
- cookie = fast_get_dcookie(&vma->vm_file->f_path);
- break;
- }
+ if (mm && mm->exe_file)
+ cookie = fast_get_dcookie(&mm->exe_file->f_path);
-out:
return cookie;
}