selftests/powerpc/pmu: Add selftest for group constraint for unit and pmc field in p9

Browse source

Unit and pmu bits in the event code is used to program unit and pmc
fields in Monitor Mode Control Register 1 (MMCR1). For power9 platform,
incase unit field value is within 6 to 9, one of the event in the group
should use PMC4. Otherwise event_open should fail for that group.

Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220610134113.62991-33-atrajeev@linux.vnet.ibm.com

...

This commit is contained in:

Kajol Jain 2022-06-10 19:11:10 +05:30 • committed by Michael Ellerman

parent 8eaca8c4b4

commit 142c9bd1ff

2 changed files with 76 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile

View file

74

tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_unit_test.c

View file