| commit | a359bb1190f213d282f4934fd461cf440d87dae0 | [log] [tgz] |
|---|---|---|
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | Mon Jun 22 17:27:48 2015 +0200 |
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | Wed Jul 22 09:58:04 2015 +0200 |
| tree | c789b991de5e54dc3ccdb3070c53dd801e52122b | |
| parent | d0fc41071a6884d0a10077bb6dc87f9267f32dd6 [diff] |
s390/kernel: squeeze a few more cycles out of the system call handler Reorder the instructions of UPDATE_VTIME to improve superscalar execution, remove duplicate checks for problem-state from the asynchronous interrupt handlers, and move the check for problem-state from the synchronous exit path to the program check path as it is only needed for program checks inside the kernel. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>