s390 hw sampling rework on comments as of Feb 14th

Robert,

here is the second version of the rework for your comments as of February 14th.

v2:
- oprofile_add_ext_sample.patch
- introduces struct oprofile_sample_parms in include/linux/oprofile.h
- merges oprofile_add_ext_hw_sample() into oprofile_add_ext_sample()
- changes signature of oprofile_add_ext_sample() by using the proposed structure containing relevant parameters
- changes all references of oprofile_add_ext_sample()

v1:
- oprofile_merge_init.patch
- merges hwsampler_files.c of arch/s390/oprofile into init.c

- oprofile_parms_struct.patch
- introduces first version of struct oprofile_sample_parms in various functions

Heinz

Heinz,

I postponed patches #1 and #3 for after the merge window as both change the fastpath which might cause a perfmormance impact.

Patch #2 I already applied.

-Robert

Advanced Micro Devices, Inc.
Operating System Research Center