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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-07-10 11:24:18 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-07-10 11:24:51 +0200 |
| commit | 987ad70a4d90cf0e70dba43ece02c2e2219e092c (patch) | |
| tree | 5597a511a31647acd7a11160d9db60a53f388d80 /include | |
| parent | [S390] dasd: Avoid compile warnings on !CONFIG_DASD_PROFILE (diff) | |
| download | linux-dev-987ad70a4d90cf0e70dba43ece02c2e2219e092c.tar.xz linux-dev-987ad70a4d90cf0e70dba43ece02c2e2219e092c.zip | |
[S390] system call optimization.
After the in-kernel system call has been remove the system call path
can be optimized. The problem state bit of the old psw is always set
between system_call and sysc_do_svc. SAVE_ALL_SVC uses this information
to avoid two instructions.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions