linux/drivers/s390
Sebastian Ott d4f5d79e97 s390/css: reduce stsch calls
Both css_evaluate_new_subchannel and cio_validate_subchannel used
stsch and css_sch_is_valid to check for a valid device.

Reduce stsch calls during subchannel evaluation by re-using schib
data. Also the type/devno valid information is only checked once.

Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-07-17 07:27:55 +02:00
..
block s390/dasd: fix cast-function-type warnings 2018-07-04 08:35:59 +02:00
char s390/sclp_async: replace callhome proc handler with generic one 2018-07-06 08:47:53 +02:00
cio s390/css: reduce stsch calls 2018-07-17 07:27:55 +02:00
crypto s390/crypto: fix gcc 8 stringop-truncation warning 2018-07-16 15:45:36 +02:00
net treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
scsi s390/dasd,zfcp: fix gcc 8 stringop-truncation warnings 2018-07-02 11:24:52 +02:00
virtio virtio/s390: implement PM operations for virtio_ccw 2018-02-14 14:34:09 +02:00
Makefile kbuild: rename built-in.o to built-in.a 2018-03-26 02:01:19 +09:00