tools/perf/tests/parse-metric.c - third_party/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 #include <linux/compiler.h>
 #include <string.h>
 #include <perf/cpumap.h>
 #include <perf/evlist.h>
 #include "metricgroup.h"
 #include "tests.h"
 #include "pmu-events/pmu-events.h"
 #include "evlist.h"
 #include "rblist.h"
 #include "debug.h"
 #include "expr.h"
 #include "stat.h"

 static struct pmu_event pme_test[] = {
 {
 	.metric_expr	= "inst_retired.any / cpu_clk_unhalted.thread",
 	.metric_name	= "IPC",
 	.metric_group	= "group1",
 },
 {
 	.metric_expr	= "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
 			  "( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))",
 	.metric_name	= "Frontend_Bound_SMT",
 },
 {
 	.metric_expr	= "l1d\\-loads\\-misses / inst_retired.any",
 	.metric_name	= "dcache_miss_cpi",
 },
 {
 	.metric_expr	= "l1i\\-loads\\-misses / inst_retired.any",
 	.metric_name	= "icache_miss_cycles",
 },
 {
 	.metric_expr	= "(dcache_miss_cpi + icache_miss_cycles)",
 	.metric_name	= "cache_miss_cycles",
 	.metric_group	= "group1",
 },
 {
 	.metric_expr	= "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
 	.metric_name	= "DCache_L2_All_Hits",
 },
 {
 	.metric_expr	= "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + "
 			  "l2_rqsts.pf_miss + l2_rqsts.rfo_miss",
 	.metric_name	= "DCache_L2_All_Miss",
 },
 {
 	.metric_expr	= "dcache_l2_all_hits + dcache_l2_all_miss",
 	.metric_name	= "DCache_L2_All",
 },
 {
 	.metric_expr	= "d_ratio(dcache_l2_all_hits, dcache_l2_all)",
 	.metric_name	= "DCache_L2_Hits",
 },
 {
 	.metric_expr	= "d_ratio(dcache_l2_all_miss, dcache_l2_all)",
 	.metric_name	= "DCache_L2_Misses",
 },
 {
 	.metric_expr	= "ipc + m2",
 	.metric_name	= "M1",
 },
 {
 	.metric_expr	= "ipc + m1",
 	.metric_name	= "M2",
 },
 {
 	.metric_expr	= "1/m3",
 	.metric_name	= "M3",
 },
 {
 	.name	= NULL,
 }
 };

 static struct pmu_events_map map = {
 	.cpuid		= "test",
 	.version	= "1",
 	.type		= "core",
 	.table		= pme_test,
 };

 struct value {
 	const char	*event;
 	u64		 val;
 };

 static u64 find_value(const char *name, struct value *values)
 {
 	struct value *v = values;

 	while (v->event) {
 		if (!strcmp(name, v->event))
 			return v->val;
 		v++;
 	};
 	return 0;
 }

 static void load_runtime_stat(struct runtime_stat *st, struct evlist *evlist,
 			      struct value *vals)
 {
 	struct evsel *evsel;
 	u64 count;

 	evlist__for_each_entry(evlist, evsel) {
 		count = find_value(evsel->name, vals);
 		perf_stat__update_shadow_stats(evsel, count, 0, st);
 	}
 }

 static double compute_single(struct rblist *metric_events, struct evlist *evlist,
 			     struct runtime_stat *st, const char *name)
 {
 	struct metric_expr *mexp;
 	struct metric_event *me;
 	struct evsel *evsel;

 	evlist__for_each_entry(evlist, evsel) {
 		me = metricgroup__lookup(metric_events, evsel, false);
 		if (me != NULL) {
 			list_for_each_entry (mexp, &me->head, nd) {
 				if (strcmp(mexp->metric_name, name))
 					continue;
 				return test_generic_metric(mexp, 0, st);
 			}
 		}
 	}
 	return 0.;
 }

 static int __compute_metric(const char *name, struct value *vals,
 			    const char *name1, double *ratio1,
 			    const char *name2, double *ratio2)
 {
 	struct rblist metric_events = {
 		.nr_entries = 0,
 	};
 	struct perf_cpu_map *cpus;
 	struct runtime_stat st;
 	struct evlist *evlist;
 	int err;

 	/*
 	 * We need to prepare evlist for stat mode running on CPU 0
 	 * because that's where all the stats are going to be created.
 	 */
 	evlist = evlist__new();
 	if (!evlist)
 		return -ENOMEM;

 	cpus = perf_cpu_map__new("0");
 	if (!cpus) {
 		evlist__delete(evlist);
 		return -ENOMEM;
 	}

 	perf_evlist__set_maps(&evlist->core, cpus, NULL);
 	runtime_stat__init(&st);

 	/* Parse the metric into metric_events list. */
 	err = metricgroup__parse_groups_test(evlist, &map, name,
 					     false, false,
 					     &metric_events);
 	if (err)
 		goto out;

 	err = perf_evlist__alloc_stats(evlist, false);
 	if (err)
 		goto out;

 	/* Load the runtime stats with given numbers for events. */
 	load_runtime_stat(&st, evlist, vals);

 	/* And execute the metric */
 	if (name1 && ratio1)
 		*ratio1 = compute_single(&metric_events, evlist, &st, name1);
 	if (name2 && ratio2)
 		*ratio2 = compute_single(&metric_events, evlist, &st, name2);

 out:
 	/* ... clenup. */
 	metricgroup__rblist_exit(&metric_events);
 	runtime_stat__exit(&st);
 	perf_evlist__free_stats(evlist);
 	perf_cpu_map__put(cpus);
 	evlist__delete(evlist);
 	return err;
 }

 static int compute_metric(const char *name, struct value *vals, double *ratio)
 {
 	return __compute_metric(name, vals, name, ratio, NULL, NULL);
 }

 static int compute_metric_group(const char *name, struct value *vals,
 				const char *name1, double *ratio1,
 				const char *name2, double *ratio2)
 {
 	return __compute_metric(name, vals, name1, ratio1, name2, ratio2);
 }

 static int test_ipc(void)
 {
 	double ratio;
 	struct value vals[] = {
 		{ .event = "inst_retired.any",        .val = 300 },
 		{ .event = "cpu_clk_unhalted.thread", .val = 200 },
 		{ .event = NULL, },
 	};

 	TEST_ASSERT_VAL("failed to compute metric",
 			compute_metric("IPC", vals, &ratio) == 0);

 	TEST_ASSERT_VAL("IPC failed, wrong ratio",
 			ratio == 1.5);
 	return 0;
 }

 static int test_frontend(void)
 {
 	double ratio;
 	struct value vals[] = {
 		{ .event = "idq_uops_not_delivered.core",        .val = 300 },
 		{ .event = "cpu_clk_unhalted.thread",            .val = 200 },
 		{ .event = "cpu_clk_unhalted.one_thread_active", .val = 400 },
 		{ .event = "cpu_clk_unhalted.ref_xclk",          .val = 600 },
 		{ .event = NULL, },
 	};

 	TEST_ASSERT_VAL("failed to compute metric",
 			compute_metric("Frontend_Bound_SMT", vals, &ratio) == 0);

 	TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio",
 			ratio == 0.45);
 	return 0;
 }

 static int test_cache_miss_cycles(void)
 {
 	double ratio;
 	struct value vals[] = {
 		{ .event = "l1d-loads-misses",  .val = 300 },
 		{ .event = "l1i-loads-misses",  .val = 200 },
 		{ .event = "inst_retired.any",  .val = 400 },
 		{ .event = NULL, },
 	};

 	TEST_ASSERT_VAL("failed to compute metric",
 			compute_metric("cache_miss_cycles", vals, &ratio) == 0);

 	TEST_ASSERT_VAL("cache_miss_cycles failed, wrong ratio",
 			ratio == 1.25);
 	return 0;
 }


 /*
  * DCache_L2_All_Hits = l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hi
  * DCache_L2_All_Miss = max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) +
  *                      l2_rqsts.pf_miss + l2_rqsts.rfo_miss
  * DCache_L2_All      = dcache_l2_all_hits + dcache_l2_all_miss
  * DCache_L2_Hits     = d_ratio(dcache_l2_all_hits, dcache_l2_all)
  * DCache_L2_Misses   = d_ratio(dcache_l2_all_miss, dcache_l2_all)
  *
  * l2_rqsts.demand_data_rd_hit = 100
  * l2_rqsts.pf_hit             = 200
  * l2_rqsts.rfo_hi             = 300
  * l2_rqsts.all_demand_data_rd = 400
  * l2_rqsts.pf_miss            = 500
  * l2_rqsts.rfo_miss           = 600
  *
  * DCache_L2_All_Hits = 600
  * DCache_L2_All_Miss = MAX(400 - 100, 0) + 500 + 600 = 1400
  * DCache_L2_All      = 600 + 1400  = 2000
  * DCache_L2_Hits     = 600 / 2000  = 0.3
  * DCache_L2_Misses   = 1400 / 2000 = 0.7
  */
 static int test_dcache_l2(void)
 {
 	double ratio;
 	struct value vals[] = {
 		{ .event = "l2_rqsts.demand_data_rd_hit", .val = 100 },
 		{ .event = "l2_rqsts.pf_hit",             .val = 200 },
 		{ .event = "l2_rqsts.rfo_hit",            .val = 300 },
 		{ .event = "l2_rqsts.all_demand_data_rd", .val = 400 },
 		{ .event = "l2_rqsts.pf_miss",            .val = 500 },
 		{ .event = "l2_rqsts.rfo_miss",           .val = 600 },
 		{ .event = NULL, },
 	};

 	TEST_ASSERT_VAL("failed to compute metric",
 			compute_metric("DCache_L2_Hits", vals, &ratio) == 0);

 	TEST_ASSERT_VAL("DCache_L2_Hits failed, wrong ratio",
 			ratio == 0.3);

 	TEST_ASSERT_VAL("failed to compute metric",
 			compute_metric("DCache_L2_Misses", vals, &ratio) == 0);

 	TEST_ASSERT_VAL("DCache_L2_Misses failed, wrong ratio",
 			ratio == 0.7);
 	return 0;
 }

 static int test_recursion_fail(void)
 {
 	double ratio;
 	struct value vals[] = {
 		{ .event = "inst_retired.any",        .val = 300 },
 		{ .event = "cpu_clk_unhalted.thread", .val = 200 },
 		{ .event = NULL, },
 	};

 	TEST_ASSERT_VAL("failed to find recursion",
 			compute_metric("M1", vals, &ratio) == -1);

 	TEST_ASSERT_VAL("failed to find recursion",
 			compute_metric("M3", vals, &ratio) == -1);
 	return 0;
 }

 static int test_metric_group(void)
 {
 	double ratio1, ratio2;
 	struct value vals[] = {
 		{ .event = "cpu_clk_unhalted.thread", .val = 200 },
 		{ .event = "l1d-loads-misses",        .val = 300 },
 		{ .event = "l1i-loads-misses",        .val = 200 },
 		{ .event = "inst_retired.any",        .val = 400 },
 		{ .event = NULL, },
 	};

 	TEST_ASSERT_VAL("failed to find recursion",
 			compute_metric_group("group1", vals,
 					     "IPC", &ratio1,
 					     "cache_miss_cycles", &ratio2) == 0);

 	TEST_ASSERT_VAL("group IPC failed, wrong ratio",
 			ratio1 == 2.0);

 	TEST_ASSERT_VAL("group cache_miss_cycles failed, wrong ratio",
 			ratio2 == 1.25);
 	return 0;
 }

 int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused)
 {
 	TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
 	TEST_ASSERT_VAL("frontend failed", test_frontend() == 0);
 	TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0);
 	TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0);
 	TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0);
 	TEST_ASSERT_VAL("test metric group", test_metric_group() == 0);
 	return 0;
 }
	// SPDX-License-Identifier: GPL-2.0
	#include <linux/compiler.h>
	#include <string.h>
	#include <perf/cpumap.h>
	#include <perf/evlist.h>
	#include "metricgroup.h"
	#include "tests.h"
	#include "pmu-events/pmu-events.h"
	#include "evlist.h"
	#include "rblist.h"
	#include "debug.h"
	#include "expr.h"
	#include "stat.h"

	static struct pmu_event pme_test[] = {
	{
	.metric_expr = "inst_retired.any / cpu_clk_unhalted.thread",
	.metric_name = "IPC",
	.metric_group = "group1",
	},
	{
	.metric_expr = "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
	"( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))",
	.metric_name = "Frontend_Bound_SMT",
	},
	{
	.metric_expr = "l1d\\-loads\\-misses / inst_retired.any",
	.metric_name = "dcache_miss_cpi",
	},
	{
	.metric_expr = "l1i\\-loads\\-misses / inst_retired.any",
	.metric_name = "icache_miss_cycles",
	},
	{
	.metric_expr = "(dcache_miss_cpi + icache_miss_cycles)",
	.metric_name = "cache_miss_cycles",
	.metric_group = "group1",
	},
	{
	.metric_expr = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
	.metric_name = "DCache_L2_All_Hits",
	},
	{
	.metric_expr = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + "
	"l2_rqsts.pf_miss + l2_rqsts.rfo_miss",
	.metric_name = "DCache_L2_All_Miss",
	},
	{
	.metric_expr = "dcache_l2_all_hits + dcache_l2_all_miss",
	.metric_name = "DCache_L2_All",
	},
	{
	.metric_expr = "d_ratio(dcache_l2_all_hits, dcache_l2_all)",
	.metric_name = "DCache_L2_Hits",
	},
	{
	.metric_expr = "d_ratio(dcache_l2_all_miss, dcache_l2_all)",
	.metric_name = "DCache_L2_Misses",
	},
	{
	.metric_expr = "ipc + m2",
	.metric_name = "M1",
	},
	{
	.metric_expr = "ipc + m1",
	.metric_name = "M2",
	},
	{
	.metric_expr = "1/m3",
	.metric_name = "M3",
	},
	{
	.name = NULL,
	}
	};

	static struct pmu_events_map map = {
	.cpuid = "test",
	.version = "1",
	.type = "core",
	.table = pme_test,
	};

	struct value {
	const char *event;
	u64 val;
	};

	static u64 find_value(const char name, struct value values)
	{
	struct value *v = values;

	while (v->event) {
	if (!strcmp(name, v->event))
	return v->val;
	v++;
	};
	return 0;
	}

	static void load_runtime_stat(struct runtime_stat st, struct evlist evlist,
	struct value *vals)
	{
	struct evsel *evsel;
	u64 count;

	evlist__for_each_entry(evlist, evsel) {
	count = find_value(evsel->name, vals);
	perf_stat__update_shadow_stats(evsel, count, 0, st);
	}
	}

	static double compute_single(struct rblist metric_events, struct evlist evlist,
	struct runtime_stat st, const char name)
	{
	struct metric_expr *mexp;
	struct metric_event *me;
	struct evsel *evsel;

	evlist__for_each_entry(evlist, evsel) {
	me = metricgroup__lookup(metric_events, evsel, false);
	if (me != NULL) {
	list_for_each_entry (mexp, &me->head, nd) {
	if (strcmp(mexp->metric_name, name))
	continue;
	return test_generic_metric(mexp, 0, st);
	}
	}
	}
	return 0.;
	}

	static int __compute_metric(const char name, struct value vals,
	const char name1, double ratio1,
	const char name2, double ratio2)
	{
	struct rblist metric_events = {
	.nr_entries = 0,
	};
	struct perf_cpu_map *cpus;
	struct runtime_stat st;
	struct evlist *evlist;
	int err;

	/*
	* We need to prepare evlist for stat mode running on CPU 0
	* because that's where all the stats are going to be created.
	*/
	evlist = evlist__new();
	if (!evlist)
	return -ENOMEM;

	cpus = perf_cpu_map__new("0");
	if (!cpus) {
	evlist__delete(evlist);
	return -ENOMEM;
	}

	perf_evlist__set_maps(&evlist->core, cpus, NULL);
	runtime_stat__init(&st);

	/* Parse the metric into metric_events list. */
	err = metricgroup__parse_groups_test(evlist, &map, name,
	false, false,
	&metric_events);
	if (err)
	goto out;

	err = perf_evlist__alloc_stats(evlist, false);
	if (err)
	goto out;

	/* Load the runtime stats with given numbers for events. */
	load_runtime_stat(&st, evlist, vals);

	/* And execute the metric */
	if (name1 && ratio1)
	*ratio1 = compute_single(&metric_events, evlist, &st, name1);
	if (name2 && ratio2)
	*ratio2 = compute_single(&metric_events, evlist, &st, name2);

	out:
	/* ... clenup. */
	metricgroup__rblist_exit(&metric_events);
	runtime_stat__exit(&st);
	perf_evlist__free_stats(evlist);
	perf_cpu_map__put(cpus);
	evlist__delete(evlist);
	return err;
	}

	static int compute_metric(const char name, struct value vals, double *ratio)
	{
	return __compute_metric(name, vals, name, ratio, NULL, NULL);
	}

	static int compute_metric_group(const char name, struct value vals,
	const char name1, double ratio1,
	const char name2, double ratio2)
	{
	return __compute_metric(name, vals, name1, ratio1, name2, ratio2);
	}

	static int test_ipc(void)
	{
	double ratio;
	struct value vals[] = {
	{ .event = "inst_retired.any", .val = 300 },
	{ .event = "cpu_clk_unhalted.thread", .val = 200 },
	{ .event = NULL, },
	};

	TEST_ASSERT_VAL("failed to compute metric",
	compute_metric("IPC", vals, &ratio) == 0);

	TEST_ASSERT_VAL("IPC failed, wrong ratio",
	ratio == 1.5);
	return 0;
	}

	static int test_frontend(void)
	{
	double ratio;
	struct value vals[] = {
	{ .event = "idq_uops_not_delivered.core", .val = 300 },
	{ .event = "cpu_clk_unhalted.thread", .val = 200 },
	{ .event = "cpu_clk_unhalted.one_thread_active", .val = 400 },
	{ .event = "cpu_clk_unhalted.ref_xclk", .val = 600 },
	{ .event = NULL, },
	};

	TEST_ASSERT_VAL("failed to compute metric",
	compute_metric("Frontend_Bound_SMT", vals, &ratio) == 0);

	TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio",
	ratio == 0.45);
	return 0;
	}

	static int test_cache_miss_cycles(void)
	{
	double ratio;
	struct value vals[] = {
	{ .event = "l1d-loads-misses", .val = 300 },
	{ .event = "l1i-loads-misses", .val = 200 },
	{ .event = "inst_retired.any", .val = 400 },
	{ .event = NULL, },
	};

	TEST_ASSERT_VAL("failed to compute metric",
	compute_metric("cache_miss_cycles", vals, &ratio) == 0);

	TEST_ASSERT_VAL("cache_miss_cycles failed, wrong ratio",
	ratio == 1.25);
	return 0;
	}


	/*
	* DCache_L2_All_Hits = l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hi
	* DCache_L2_All_Miss = max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) +
	* l2_rqsts.pf_miss + l2_rqsts.rfo_miss
	* DCache_L2_All = dcache_l2_all_hits + dcache_l2_all_miss
	* DCache_L2_Hits = d_ratio(dcache_l2_all_hits, dcache_l2_all)
	* DCache_L2_Misses = d_ratio(dcache_l2_all_miss, dcache_l2_all)
	*
	* l2_rqsts.demand_data_rd_hit = 100
	* l2_rqsts.pf_hit = 200
	* l2_rqsts.rfo_hi = 300
	* l2_rqsts.all_demand_data_rd = 400
	* l2_rqsts.pf_miss = 500
	* l2_rqsts.rfo_miss = 600
	*
	* DCache_L2_All_Hits = 600
	* DCache_L2_All_Miss = MAX(400 - 100, 0) + 500 + 600 = 1400
	* DCache_L2_All = 600 + 1400 = 2000
	* DCache_L2_Hits = 600 / 2000 = 0.3
	* DCache_L2_Misses = 1400 / 2000 = 0.7
	*/
	static int test_dcache_l2(void)
	{
	double ratio;
	struct value vals[] = {
	{ .event = "l2_rqsts.demand_data_rd_hit", .val = 100 },
	{ .event = "l2_rqsts.pf_hit", .val = 200 },
	{ .event = "l2_rqsts.rfo_hit", .val = 300 },
	{ .event = "l2_rqsts.all_demand_data_rd", .val = 400 },
	{ .event = "l2_rqsts.pf_miss", .val = 500 },
	{ .event = "l2_rqsts.rfo_miss", .val = 600 },
	{ .event = NULL, },
	};

	TEST_ASSERT_VAL("failed to compute metric",
	compute_metric("DCache_L2_Hits", vals, &ratio) == 0);

	TEST_ASSERT_VAL("DCache_L2_Hits failed, wrong ratio",
	ratio == 0.3);

	TEST_ASSERT_VAL("failed to compute metric",
	compute_metric("DCache_L2_Misses", vals, &ratio) == 0);

	TEST_ASSERT_VAL("DCache_L2_Misses failed, wrong ratio",
	ratio == 0.7);
	return 0;
	}

	static int test_recursion_fail(void)
	{
	double ratio;
	struct value vals[] = {
	{ .event = "inst_retired.any", .val = 300 },
	{ .event = "cpu_clk_unhalted.thread", .val = 200 },
	{ .event = NULL, },
	};

	TEST_ASSERT_VAL("failed to find recursion",
	compute_metric("M1", vals, &ratio) == -1);

	TEST_ASSERT_VAL("failed to find recursion",
	compute_metric("M3", vals, &ratio) == -1);
	return 0;
	}

	static int test_metric_group(void)
	{
	double ratio1, ratio2;
	struct value vals[] = {
	{ .event = "cpu_clk_unhalted.thread", .val = 200 },
	{ .event = "l1d-loads-misses", .val = 300 },
	{ .event = "l1i-loads-misses", .val = 200 },
	{ .event = "inst_retired.any", .val = 400 },
	{ .event = NULL, },
	};

	TEST_ASSERT_VAL("failed to find recursion",
	compute_metric_group("group1", vals,
	"IPC", &ratio1,
	"cache_miss_cycles", &ratio2) == 0);

	TEST_ASSERT_VAL("group IPC failed, wrong ratio",
	ratio1 == 2.0);

	TEST_ASSERT_VAL("group cache_miss_cycles failed, wrong ratio",
	ratio2 == 1.25);
	return 0;
	}

	int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused)
	{
	TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
	TEST_ASSERT_VAL("frontend failed", test_frontend() == 0);
	TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0);
	TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0);
	TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0);
	TEST_ASSERT_VAL("test metric group", test_metric_group() == 0);
	return 0;
	}