summaryrefslogtreecommitdiffstats
path: root/tools/perf/tests/expr.c
blob: d54c5371c6a6e414dbb19ffece465a0f40f7415a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
// SPDX-License-Identifier: GPL-2.0
#include "util/debug.h"
#include "util/expr.h"
#include "util/smt.h"
#include "tests.h"
#include <stdlib.h>
#include <string.h>
#include <linux/zalloc.h>

static int test_ids_union(void)
{
	struct hashmap *ids1, *ids2;

	/* Empty union. */
	ids1 = ids__new();
	TEST_ASSERT_VAL("ids__new", ids1);
	ids2 = ids__new();
	TEST_ASSERT_VAL("ids__new", ids2);

	ids1 = ids__union(ids1, ids2);
	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 0);

	/* Union {foo, bar} against {}. */
	ids2 = ids__new();
	TEST_ASSERT_VAL("ids__new", ids2);

	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("foo")), 0);
	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("bar")), 0);

	ids1 = ids__union(ids1, ids2);
	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2);

	/* Union {foo, bar} against {foo}. */
	ids2 = ids__new();
	TEST_ASSERT_VAL("ids__new", ids2);
	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("foo")), 0);

	ids1 = ids__union(ids1, ids2);
	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2);

	/* Union {foo, bar} against {bar,baz}. */
	ids2 = ids__new();
	TEST_ASSERT_VAL("ids__new", ids2);
	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("bar")), 0);
	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("baz")), 0);

	ids1 = ids__union(ids1, ids2);
	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 3);

	ids__free(ids1);

	return 0;
}

static int test(struct expr_parse_ctx *ctx, const char *e, double val2)
{
	double val;

	if (expr__parse(&val, ctx, e))
		TEST_ASSERT_VAL("parse test failed", 0);
	TEST_ASSERT_VAL("unexpected value", val == val2);
	return 0;
}

static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
{
	struct expr_id_data *val_ptr;
	const char *p;
	double val, num_cpus, num_cores, num_dies, num_packages;
	int ret;
	struct expr_parse_ctx *ctx;

	TEST_ASSERT_EQUAL("ids_union", test_ids_union(), 0);

	ctx = expr__ctx_new();
	TEST_ASSERT_VAL("expr__ctx_new", ctx);
	expr__add_id_val(ctx, strdup("FOO"), 1);
	expr__add_id_val(ctx, strdup("BAR"), 2);

	ret = test(ctx, "1+1", 2);
	ret |= test(ctx, "FOO+BAR", 3);
	ret |= test(ctx, "(BAR/2)%2", 1);
	ret |= test(ctx, "1 - -4",  5);
	ret |= test(ctx, "(FOO-1)*2 + (BAR/2)%2 - -4",  5);
	ret |= test(ctx, "1-1 | 1", 1);
	ret |= test(ctx, "1-1 & 1", 0);
	ret |= test(ctx, "min(1,2) + 1", 2);
	ret |= test(ctx, "max(1,2) + 1", 3);
	ret |= test(ctx, "1+1 if 3*4 else 0", 2);
	ret |= test(ctx, "1.1 + 2.1", 3.2);
	ret |= test(ctx, ".1 + 2.", 2.1);
	ret |= test(ctx, "d_ratio(1, 2)", 0.5);
	ret |= test(ctx, "d_ratio(2.5, 0)", 0);
	ret |= test(ctx, "1.1 < 2.2", 1);
	ret |= test(ctx, "2.2 > 1.1", 1);
	ret |= test(ctx, "1.1 < 1.1", 0);
	ret |= test(ctx, "2.2 > 2.2", 0);
	ret |= test(ctx, "2.2 < 1.1", 0);
	ret |= test(ctx, "1.1 > 2.2", 0);

	if (ret) {
		expr__ctx_free(ctx);
		return ret;
	}

	p = "FOO/0";
	ret = expr__parse(&val, ctx, p);
	TEST_ASSERT_VAL("division by zero", ret == -1);

	p = "BAR/";
	ret = expr__parse(&val, ctx, p);
	TEST_ASSERT_VAL("missing operand", ret == -1);

	expr__ctx_clear(ctx);
	TEST_ASSERT_VAL("find ids",
			expr__find_ids("FOO + BAR + BAZ + BOZO", "FOO",
					ctx) == 0);
	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 3);
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BAR",
						    (void **)&val_ptr));
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BAZ",
						    (void **)&val_ptr));
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BOZO",
						    (void **)&val_ptr));

	expr__ctx_clear(ctx);
	ctx->runtime = 3;
	TEST_ASSERT_VAL("find ids",
			expr__find_ids("EVENT1\\,param\\=?@ + EVENT2\\,param\\=?@",
					NULL, ctx) == 0);
	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 2);
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1,param=3@",
						    (void **)&val_ptr));
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT2,param=3@",
						    (void **)&val_ptr));

	expr__ctx_clear(ctx);
	TEST_ASSERT_VAL("find ids",
			expr__find_ids("dash\\-event1 - dash\\-event2",
				       NULL, ctx) == 0);
	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 2);
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "dash-event1",
						    (void **)&val_ptr));
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "dash-event2",
						    (void **)&val_ptr));

	/* Only EVENT1 or EVENT2 need be measured depending on the value of smt_on. */
	expr__ctx_clear(ctx);
	TEST_ASSERT_VAL("find ids",
			expr__find_ids("EVENT1 if #smt_on else EVENT2",
				NULL, ctx) == 0);
	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);
	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids,
						  smt_on() ? "EVENT1" : "EVENT2",
						  (void **)&val_ptr));

	/* The expression is a constant 1.0 without needing to evaluate EVENT1. */
	expr__ctx_clear(ctx);
	TEST_ASSERT_VAL("find ids",
			expr__find_ids("1.0 if EVENT1 > 100.0 else 1.0",
			NULL, ctx) == 0);
	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0);

	/* Test toplogy constants appear well ordered. */
	expr__ctx_clear(ctx);
	TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);
	TEST_ASSERT_VAL("#num_cores", expr__parse(&num_cores, ctx, "#num_cores") == 0);
	TEST_ASSERT_VAL("#num_cpus >= #num_cores", num_cpus >= num_cores);
	TEST_ASSERT_VAL("#num_dies", expr__parse(&num_dies, ctx, "#num_dies") == 0);
	TEST_ASSERT_VAL("#num_cores >= #num_dies", num_cores >= num_dies);
	TEST_ASSERT_VAL("#num_packages", expr__parse(&num_packages, ctx, "#num_packages") == 0);

	if (num_dies) // Some platforms do not have CPU die support, for example s390
		TEST_ASSERT_VAL("#num_dies >= #num_packages", num_dies >= num_packages);

	/*
	 * Source count returns the number of events aggregating in a leader
	 * event including the leader. Check parsing yields an id.
	 */
	expr__ctx_clear(ctx);
	TEST_ASSERT_VAL("source count",
			expr__find_ids("source_count(EVENT1)",
			NULL, ctx) == 0);
	TEST_ASSERT_VAL("source count", hashmap__size(ctx->ids) == 1);
	TEST_ASSERT_VAL("source count", hashmap__find(ctx->ids, "EVENT1",
							(void **)&val_ptr));

	expr__ctx_free(ctx);

	return 0;
}

DEFINE_SUITE("Simple expression parser", expr);