s390/cio: export CHPID operating speed

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Add a per-CHPID sysfs attribute named "speed_bps" that provides the
operating speed of the associated channel path in bits per second,
or 0 if the operating speed is not available.

Example:

$ cat /sys/devices/css0/chp0.32/speed_bps
32G

Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

...

This commit is contained in:

Peter Oberparleiter 2024-03-26 17:03:24 +01:00 • committed by Alexander Gordeev

parent 5e6bb10ee5

commit 0f987e6caa

3 changed files with 49 additions and 2 deletions

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30

drivers/s390/cio/chp.c

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1

drivers/s390/cio/chp.h

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20

drivers/s390/cio/chsc.c

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