perf_counter: Generate mmap events for install_special_mapping()

In order to track the vdso also generate mmap events for
install_special_mapping().

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 2 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index 6451ce2854b9..8101de490c73 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1220,8 +1220,7 @@ munmap_back:
         if (correct_wcount)
                 atomic_inc(&inode->i_writecount);
 out:
-        if (vm_flags & VM_EXEC)
-                perf_counter_mmap(addr, len, pgoff, file);
+        perf_counter_mmap(vma);
 
         mm->total_vm += len >> PAGE_SHIFT;
         vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
@@ -2309,6 +2308,8 @@ int install_special_mapping(struct mm_struct *mm,
 
         mm->total_vm += len >> PAGE_SHIFT;
 
+        perf_counter_mmap(vma);
+
         return 0;
 }