perf parse-events: Support hardware events as terms

An event like "cpu/instructions/" typically parses due to there being
a sysfs event called instructions. On hybrid recursive parsing means
that the hardware event is encoded in the attribute, with the PMU
being placed in the high bits of the config:

'''
$ perf stat -vv -e 'cpu_core/cycles/' true
...
------------------------------------------------------------
perf_event_attr:
  size                             136
  config                           0x400000000
  sample_type                      IDENTIFIER
  read_format                      TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
  disabled                         1
  inherit                          1
  enable_on_exec                   1
  exclude_guest                    1
------------------------------------------------------------
'''

Make this behavior the default by adding a new term type and token for
hardware events. The token gathers both the numeric config and the
parsed name, so that if the token appears like "cycles/name=cycles/"
then the token can be handled like a name. The numeric value isn't
sufficient to distinguish say "cpu-cycles" from "cycles".

Extend the parse-events test so that all current non-PMU hardware
parsing tests, also test with the PMU cpu - more than half the change.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kang Minchul <tegongkang@gmail.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20230502223851.2234828-34-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 71c77d9d2744..9ca8e19bda00 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -1926,6 +1926,132 @@ static const struct evlist_test test__events_pmu[] = {
 		.check = test__checkevent_config_cache,
 		/* 8 */
 	},
+	{
+		.name  = "cpu/instructions/",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_symbolic_name,
+		/* 9 */
+	},
+	{
+		.name  = "cpu/cycles,period=100000,config2/",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_symbolic_name_config,
+		/* 0 */
+	},
+	{
+		.name  = "cpu/instructions/h",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_symbolic_name_modifier,
+		/* 1 */
+	},
+	{
+		.name  = "cpu/instructions/G",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_exclude_host_modifier,
+		/* 2 */
+	},
+	{
+		.name  = "cpu/instructions/H",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_exclude_guest_modifier,
+		/* 3 */
+	},
+	{
+		.name  = "{cpu/instructions/k,cpu/cycles/upp}",
+		.valid = test__pmu_cpu_valid,
+		.check = test__group1,
+		/* 4 */
+	},
+	{
+		.name  = "{cpu/cycles/u,cpu/instructions/kp}:p",
+		.valid = test__pmu_cpu_valid,
+		.check = test__group4,
+		/* 5 */
+	},
+	{
+		.name  = "{cpu/cycles/,cpu/cache-misses/G}:H",
+		.valid = test__pmu_cpu_valid,
+		.check = test__group_gh1,
+		/* 6 */
+	},
+	{
+		.name  = "{cpu/cycles/,cpu/cache-misses/H}:G",
+		.valid = test__pmu_cpu_valid,
+		.check = test__group_gh2,
+		/* 7 */
+	},
+	{
+		.name  = "{cpu/cycles/G,cpu/cache-misses/H}:u",
+		.valid = test__pmu_cpu_valid,
+		.check = test__group_gh3,
+		/* 8 */
+	},
+	{
+		.name  = "{cpu/cycles/G,cpu/cache-misses/H}:uG",
+		.valid = test__pmu_cpu_valid,
+		.check = test__group_gh4,
+		/* 9 */
+	},
+	{
+		.name  = "{cpu/cycles/,cpu/cache-misses/,cpu/branch-misses/}:S",
+		.valid = test__pmu_cpu_valid,
+		.check = test__leader_sample1,
+		/* 0 */
+	},
+	{
+		.name  = "{cpu/instructions/,cpu/branch-misses/}:Su",
+		.valid = test__pmu_cpu_valid,
+		.check = test__leader_sample2,
+		/* 1 */
+	},
+	{
+		.name  = "cpu/instructions/uDp",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_pinned_modifier,
+		/* 2 */
+	},
+	{
+		.name  = "{cpu/cycles/,cpu/cache-misses/,cpu/branch-misses/}:D",
+		.valid = test__pmu_cpu_valid,
+		.check = test__pinned_group,
+		/* 3 */
+	},
+	{
+		.name  = "cpu/instructions/I",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_exclude_idle_modifier,
+		/* 4 */
+	},
+	{
+		.name  = "cpu/instructions/kIG",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_exclude_idle_modifier_1,
+		/* 5 */
+	},
+	{
+		.name  = "cpu/cycles/u",
+		.valid = test__pmu_cpu_valid,
+		.check = test__sym_event_slash,
+		/* 6 */
+	},
+	{
+		.name  = "cpu/cycles/k",
+		.valid = test__pmu_cpu_valid,
+		.check = test__sym_event_dc,
+		/* 7 */
+	},
+	{
+		.name  = "cpu/instructions/uep",
+		.valid = test__pmu_cpu_valid,
+		.check = test__checkevent_exclusive_modifier,
+		/* 8 */
+	},
+	{
+		.name  = "{cpu/cycles/,cpu/cache-misses/,cpu/branch-misses/}:e",
+		.valid = test__pmu_cpu_valid,
+		.check = test__exclusive_group,
+		/* 9 */
+	},
 };
 
 struct terms_test {