perf vendor events amd: Fix large metrics

There are cases where a metric requires more events than the number of
available counters. E.g. AMD Zen, Zen 2 and Zen 3 processors have four
data fabric co

perf vendor events amd: Fix large metrics

There are cases where a metric requires more events than the number of
available counters. E.g. AMD Zen, Zen 2 and Zen 3 processors have four
data fabric counters but the "nps1_die_to_dram" metric has eight events.

By default, the constituent events are placed in a group and since the
events cannot be scheduled at the same time, the metric is not computed.
The "all metrics" test also fails because of this.

Use the NO_GROUP_EVENTS constraint for such metrics which anyway expect
the user to run perf with "--metric-no-group".

E.g.

$ sudo perf test -v 101

Before:

101: perf all metrics test :
--- start ---
test child forked, pid 37131
Testing branch_misprediction_ratio
Testing all_remote_links_outbound
Testing nps1_die_to_dram
Metric 'nps1_die_to_dram' not printed in:
Error:
Invalid event (dram_channel_data_controller_4) in per-thread mode, enable system wide with '-a'.
Testing macro_ops_dispatched
Testing all_l2_cache_accesses
Testing all_l2_cache_hits
Testing all_l2_cache_misses
Testing ic_fetch_miss_ratio
Testing l2_cache_accesses_from_l2_hwpf
Testing l2_cache_misses_from_l2_hwpf
Testing op_cache_fetch_miss_ratio
Testing l3_read_miss_latency
Testing l1_itlb_misses
test child finished with -1
---- end ----
perf all metrics test: FAILED!

After:

101: perf all metrics test :
--- start ---
test child forked, pid 43766
Testing branch_misprediction_ratio
Testing all_remote_links_outbound
Testing nps1_die_to_dram
Testing macro_ops_dispatched
Testing all_l2_cache_accesses
Testing all_l2_cache_hits
Testing all_l2_cache_misses
Testing ic_fetch_miss_ratio
Testing l2_cache_accesses_from_l2_hwpf
Testing l2_cache_misses_from_l2_hwpf
Testing op_cache_fetch_miss_ratio
Testing l3_read_miss_latency
Testing l1_itlb_misses
test child finished with 0
---- end ----
perf all metrics test: Ok

Reported-by: Ayush Jain <ayush.jain3@amd.com>
Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Link: https://lore.kernel.org/r/20230706063440.54189-1-sandipan.das@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

show more ...