diff options
| author | Davidlohr Bueso <[email protected]> | 2015-04-16 12:49:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2015-04-17 09:04:11 -0400 |
| commit | d4144ea6e7cc307e84cd9ca227df7b04a54a2365 (patch) | |
| tree | a12d8c0df4e50b5b307cc2d77d5f870ed7042dba /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | fd89a65f155fa890c0130139dfb91684d6da4cfb (diff) | |
tomoyo: reduce mmap_sem hold for mm->exe_file
The mm->exe_file is currently serialized with mmap_sem (shared) in order
to both safely (1) read the file and (2) compute the realpath by calling
tomoyo_realpath_from_path, making it an absolute overkill. Good users
will, on the other hand, make use of the more standard get_mm_exe_file(),
requiring only holding the mmap_sem to read the value, and relying on
reference
[[email protected]: coding-style fixes]
Signed-off-by: Davidlohr Bueso <[email protected]>
Acked-by: Tetsuo Handa <[email protected]>
Cc: James Morris <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions