s390/perf: add support for the CPU-Measurement Sampling Facility

Introduce a perf PMU, "cpum_sf", to support the CPU-Measurement
Sampling Facility.  You can control the sampling facility through
this perf PMU interfaces.  Perf sampling events are created for
hardware samples.

For details about the CPU-Measurement Sampling Facility, see
"The Load-Program-Parameter and the CPU-Measurement Facilities" (SA23-2260).

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --cc arch/s390/include/asm/cpu_mf.h
Simple merge

diff --cc arch/s390/include/asm/perf_event.h
Simple merge

diff --cc arch/s390/kernel/Makefile
Simple merge

diff --cc arch/s390/kernel/perf_cpum_sf.c
Simple merge

diff --cc arch/s390/kernel/perf_event.c
Simple merge