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5958ad4392
Platform specific PMU supports alternative event for some of the event codes. During perf_event_open, it any event group doesn't match constraint check criteria, further lookup is done to find alternative event. Code checks to see if it is possible to schedule event as group using alternative events. Testcase exercises the alternative event find code for power9. Example, since events in same PMC can't go in as a group, ideally using PM_RUN_CYC_ALT (0x200f4) and PM_BR_TAKEN_CMPL (0x200fa) will fail. But since RUN_CYC (0x600f4) is alternative event for 0x200f4, it is possible to use 0x600f4 and 0x200fa as group. Testcase uses such combination for all events in power9 which has an alternative event. Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220610134113.62991-27-atrajeev@linux.vnet.ibm.com
13 lines
608 B
Makefile
13 lines
608 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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CFLAGS += -m64
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TEST_GEN_PROGS := group_constraint_pmc56_test group_pmc56_exclude_constraints_test group_constraint_pmc_count_test \
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group_constraint_repeat_test group_constraint_radix_scope_qual_test reserved_bits_mmcra_sample_elig_mode_test \
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group_constraint_mmcra_sample_test invalid_event_code_test reserved_bits_mmcra_thresh_ctl_test \
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blacklisted_events_test event_alternatives_tests_p9
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top_srcdir = ../../../../../..
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include ../../../lib.mk
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$(TEST_GEN_PROGS): ../../harness.c ../../utils.c ../event.c ../lib.c ../sampling_tests/misc.h ../sampling_tests/misc.c
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