• Michael Holzheu's avatar
    s390/hypfs: Add diagnose 0c support · 34c0dad7
    Michael Holzheu authored
    With this feature, you can read the CPU performance metrics provided by the
    z/VM diagnose 0C. This then allows to get the management time for each
    online CPU of the guest where the diagnose is executed.
    
    The new debugfs file /sys/kernel/debug/s390_hypfs/diag_0c exports the
    diag0C binary data to user space via an open/read/close interface.
    
    The binary data consists out of a header structure followed by an
    array that contains the diagnose 0c data for each online CPU.
    Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    34c0dad7
Makefile 213 Bytes