Commit 5e6bb10e authored by Peter Oberparleiter's avatar Peter Oberparleiter Committed by Alexander Gordeev
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s390/cio: export measurement data for all CMGs 



A channel-path's channel-measurement-group value (CMG) determines the
format of associated measurement data and characteristics blocks. Both
blocks are of fixed size and contain a generic and CMG-dependent part.

Currently CIO exports these data blocks via sysfs only for a specific
list of CMGs even though the kernel itself does not interpret
CMG-dependent data.

Change CIO to export measurement data and characteristics for all CMGs.
This enables supporting new CMG data formats in userspace without the
need for kernel changes.

Reviewed-by: default avatarVineeth Vijayan <vneethv@linux.ibm.com>
Acked-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarPeter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
parent 2dc8903a

drivers/s390/cio/chsc.c

+0 −4
Original line number Diff line number Diff line
@@ -1126,10 +1126,6 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp) 
	chp->cmg = scmc_area->cmg;

	chp->shared = scmc_area->shared;

	chp->extended = scmc_area->extended;

	if (chp->cmg != 2 && chp->cmg != 3) {

		/* No cmg-dependent data. */

		goto out;

	}

	chsc_initialize_cmg_chars(chp, scmc_area->cmcv,

				  (struct cmg_chars *) &scmc_area->data);

out: