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956a78356c
Add creating event aliases to the pmu-events test. So currently we verify that the generated pmu-events.c is as expected for some test events. Now test that we generate aliases as expected for those events during normal operation. For that, we cycle through each HW PMU in the system, and use the test events to create aliases, and verify those against known, expected values. For core PMUs, we should create an alias for every event in test_cpu_events[]. However, for uncore PMUs, they need to be matched by the pmu_event.pmu member, so use test_uncore_events[]; so check the match beforehand with pmu_uncore_alias_match(). A sample run is as follows for my x86 machine: john@linux-3c19:~/linux> tools/perf/perf test -vv 10 10: PMU events : --- start --- ... testing PMU uncore_arb aliases: no events to match testing PMU cstate_pkg aliases: no events to match skipping testing PMU breakpoint testing aliases PMU uncore_cbox_1: matched event unc_cbo_xsnp_response.miss_eviction testing PMU uncore_cbox_1 aliases: pass testing PMU power aliases: no events to match testing aliases PMU cpu: matched event bp_l1_btb_correct testing aliases PMU cpu: matched event bp_l2_btb_correct testing aliases PMU cpu: matched event segment_reg_loads.any testing aliases PMU cpu: matched event dispatch_blocked.any testing aliases PMU cpu: matched event eist_trans testing PMU cpu aliases: pass testing PMU intel_pt aliases: no events to match skipping testing PMU software skipping testing PMU intel_bts testing PMU uncore_imc aliases: no events to match testing aliases PMU uncore_cbox_0: matched event unc_cbo_xsnp_response.miss_eviction testing PMU uncore_cbox_0 aliases: pass testing PMU cstate_core aliases: no events to match skipping testing PMU tracepoint testing PMU msr aliases: no events to match test child finished with 0 Signed-off-by: John Garry <john.garry@huawei.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: James Clark <james.clark@arm.com> Cc: Joakim Zhang <qiangqing.zhang@nxp.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linuxarm@huawei.com Link: http://lore.kernel.org/lkml/1584442939-8911-8-git-send-email-john.garry@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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