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| author | Peter Oberparleiter <oberpar@linux.ibm.com> | 2024-11-07 17:50:36 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-11-13 16:31:31 +0300 |
| commit | 2f4b3b83b8c6e798a2e581521f00933d0f9ec777 (patch) | |
| tree | 21dedc6a8654e11dd3752c7fbc24bf7ac8239c41 /drivers/s390/cio/chp.h | |
| parent | 182c02a6cd5f7947c403ba2321e262fb0aeaabfc (diff) | |
| download | linux-2f4b3b83b8c6e798a2e581521f00933d0f9ec777.tar.xz | |
s390/cio: Externalize full CMG characteristics
The current "measurement_chars" CHPID sysfs attribute exposes only a
limited, validity-filtered portion of data from the associated Channel-
Measurements Characteristics Block (CMCB). New machine models add data
that is relevant for userspace tooling to the "header"-portion of the
CMCB. This data that is not currently accessible to userspace.
To prevent having to add new sysfs attributes whenever a new bit of data
is added to the CMCB "header", add a new sysfs attribute named
"measurement_chars_full" that exposes the full, unfiltered CMCB.
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chp.h')
| -rw-r--r-- | drivers/s390/cio/chp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/cio/chp.h b/drivers/s390/cio/chp.h index a15324a43aa3..391b52a7474c 100644 --- a/drivers/s390/cio/chp.h +++ b/drivers/s390/cio/chp.h @@ -54,6 +54,7 @@ struct channel_path { int extended; unsigned long speed; struct cmg_chars cmg_chars; + struct cmg_cmcb cmcb; }; /* Return channel_path struct for given chpid. */ |