| commit | ee64baf4ea3b7affb7e325bb3d188515ec4bb66e | [log] [tgz] |
|---|---|---|
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | Mon Jun 13 10:17:20 2016 +0200 |
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | Mon Jun 13 15:58:25 2016 +0200 |
| tree | e99c82a4efe621de6d6683fc5af366aef5d807ca | |
| parent | b8ac5e2f4d8659961d2e0aea5475a07fb4eeec2d [diff] |
s390/uaccess: use __builtin_expect for get_user/put_user
We always expect that get_user and put_user return with zero. Give the
compiler a hint so it can slightly optimize the code and avoid
branches.
This is the same what x86 got with commit a76cf66e948a ("x86/uaccess:
Tell the compiler that uaccess is unlikely to fault").
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>