cpum_sf

Messages with a prefix cpum_sf are issued by kernel functions that support the z/Architecture® CPU-measurement sampling facility.

cpum_sf.13a98c
Switching off the sampling facility failed with rc=<error condition>
cpum_sf.20f026
A sampling buffer entry is incorrect (alert=0x<Alert code>)
cpum_sf.310c27
Sample data caused the AUX buffer with <Current AUX buffer size in num of pages> pages to overflow
cpum_sf.72392d
Loading sampling controls failed: op=<Type of operation> err=<Error condition>
cpum_sf.856c05
Registering for s390dbf failed
cpum_sf.96d859
Sampling facility support for perf is not available: reason=<reason code>
cpum_sf.9aaa3d
Sample data was lost
cpum_sf.a24924
AUX buffer size (<Current AUX buffer size in num of pages> pages) is larger than the maximum sampling buffer limit
cpum_sf.a2e96f
The sampling buffer limits have changed to: min=<minimum size in sample-data-blocks> max=<maximum size in sample-data-blocks> (diag=x<size factor for buffering diagnostic-sampling data entries>)
cpum_sf.d37efd
The AUX buffer with <Current AUX buffer size in num of pages> pages for the diagnostic-sampling mode is full
cpum_sf.d9c8dd
AUX buffer size (<Current AUX buffer size in num of pages> pages) is less than the minimum sampling buffer limit

Parent topic: Linux on Z and LinuxONE kernel messages