Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include "util/cputopo.h"
3#include "util/debug.h"
4#include "util/expr.h"
5#include "util/hashmap.h"
6#include "util/header.h"
7#include "util/smt.h"
8#include "tests.h"
9#include <math.h>
10#include <stdlib.h>
11#include <string.h>
12#include <linux/zalloc.h>
13
14static int test_ids_union(void)
15{
16 struct hashmap *ids1, *ids2;
17
18 /* Empty union. */
19 ids1 = ids__new();
20 TEST_ASSERT_VAL("ids__new", ids1);
21 ids2 = ids__new();
22 TEST_ASSERT_VAL("ids__new", ids2);
23
24 ids1 = ids__union(ids1, ids2);
25 TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 0);
26
27 /* Union {foo, bar} against {}. */
28 ids2 = ids__new();
29 TEST_ASSERT_VAL("ids__new", ids2);
30
31 TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("foo")), 0);
32 TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("bar")), 0);
33
34 ids1 = ids__union(ids1, ids2);
35 TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2);
36
37 /* Union {foo, bar} against {foo}. */
38 ids2 = ids__new();
39 TEST_ASSERT_VAL("ids__new", ids2);
40 TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("foo")), 0);
41
42 ids1 = ids__union(ids1, ids2);
43 TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2);
44
45 /* Union {foo, bar} against {bar,baz}. */
46 ids2 = ids__new();
47 TEST_ASSERT_VAL("ids__new", ids2);
48 TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("bar")), 0);
49 TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("baz")), 0);
50
51 ids1 = ids__union(ids1, ids2);
52 TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 3);
53
54 ids__free(ids1);
55
56 return 0;
57}
58
59static int test(struct expr_parse_ctx *ctx, const char *e, double val2)
60{
61 double val;
62
63 if (expr__parse(&val, ctx, e))
64 TEST_ASSERT_VAL("parse test failed", 0);
65 TEST_ASSERT_VAL("unexpected value", val == val2);
66 return 0;
67}
68
69static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
70{
71 struct expr_id_data *val_ptr;
72 const char *p;
73 double val, num_cpus, num_cores, num_dies, num_packages;
74 int ret;
75 struct expr_parse_ctx *ctx;
76 bool is_intel = false;
77 char buf[128];
78
79 if (!get_cpuid(buf, sizeof(buf)))
80 is_intel = strstr(buf, "Intel") != NULL;
81
82 TEST_ASSERT_EQUAL("ids_union", test_ids_union(), 0);
83
84 ctx = expr__ctx_new();
85 TEST_ASSERT_VAL("expr__ctx_new", ctx);
86 expr__add_id_val(ctx, strdup("FOO"), 1);
87 expr__add_id_val(ctx, strdup("BAR"), 2);
88
89 ret = test(ctx, "1+1", 2);
90 ret |= test(ctx, "FOO+BAR", 3);
91 ret |= test(ctx, "(BAR/2)%2", 1);
92 ret |= test(ctx, "1 - -4", 5);
93 ret |= test(ctx, "(FOO-1)*2 + (BAR/2)%2 - -4", 5);
94 ret |= test(ctx, "1-1 | 1", 1);
95 ret |= test(ctx, "1-1 & 1", 0);
96 ret |= test(ctx, "min(1,2) + 1", 2);
97 ret |= test(ctx, "max(1,2) + 1", 3);
98 ret |= test(ctx, "1+1 if 3*4 else 0", 2);
99 ret |= test(ctx, "100 if 1 else 200 if 1 else 300", 100);
100 ret |= test(ctx, "100 if 0 else 200 if 1 else 300", 200);
101 ret |= test(ctx, "100 if 1 else 200 if 0 else 300", 100);
102 ret |= test(ctx, "100 if 0 else 200 if 0 else 300", 300);
103 ret |= test(ctx, "1.1 + 2.1", 3.2);
104 ret |= test(ctx, ".1 + 2.", 2.1);
105 ret |= test(ctx, "d_ratio(1, 2)", 0.5);
106 ret |= test(ctx, "d_ratio(2.5, 0)", 0);
107 ret |= test(ctx, "1.1 < 2.2", 1);
108 ret |= test(ctx, "2.2 > 1.1", 1);
109 ret |= test(ctx, "1.1 < 1.1", 0);
110 ret |= test(ctx, "2.2 > 2.2", 0);
111 ret |= test(ctx, "2.2 < 1.1", 0);
112 ret |= test(ctx, "1.1 > 2.2", 0);
113 ret |= test(ctx, "1.1e10 < 1.1e100", 1);
114 ret |= test(ctx, "1.1e2 > 1.1e-2", 1);
115
116 if (ret) {
117 expr__ctx_free(ctx);
118 return ret;
119 }
120
121 p = "FOO/0";
122 ret = expr__parse(&val, ctx, p);
123 TEST_ASSERT_VAL("division by zero", ret == 0);
124 TEST_ASSERT_VAL("division by zero", isnan(val));
125
126 p = "BAR/";
127 ret = expr__parse(&val, ctx, p);
128 TEST_ASSERT_VAL("missing operand", ret == -1);
129
130 expr__ctx_clear(ctx);
131 TEST_ASSERT_VAL("find ids",
132 expr__find_ids("FOO + BAR + BAZ + BOZO", "FOO",
133 ctx) == 0);
134 TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 3);
135 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BAR", &val_ptr));
136 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BAZ", &val_ptr));
137 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BOZO", &val_ptr));
138
139 expr__ctx_clear(ctx);
140 ctx->sctx.runtime = 3;
141 TEST_ASSERT_VAL("find ids",
142 expr__find_ids("EVENT1\\,param\\=?@ + EVENT2\\,param\\=?@",
143 NULL, ctx) == 0);
144 TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 2);
145 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1,param=3@", &val_ptr));
146 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT2,param=3@", &val_ptr));
147
148 expr__ctx_clear(ctx);
149 TEST_ASSERT_VAL("find ids",
150 expr__find_ids("dash\\-event1 - dash\\-event2",
151 NULL, ctx) == 0);
152 TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 2);
153 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "dash-event1", &val_ptr));
154 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "dash-event2", &val_ptr));
155
156 /* Only EVENT1 or EVENT2 need be measured depending on the value of smt_on. */
157 {
158 bool smton = smt_on();
159 bool corewide = core_wide(/*system_wide=*/false,
160 /*user_requested_cpus=*/false);
161
162 expr__ctx_clear(ctx);
163 TEST_ASSERT_VAL("find ids",
164 expr__find_ids("EVENT1 if #smt_on else EVENT2",
165 NULL, ctx) == 0);
166 TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);
167 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids,
168 smton ? "EVENT1" : "EVENT2",
169 &val_ptr));
170
171 expr__ctx_clear(ctx);
172 TEST_ASSERT_VAL("find ids",
173 expr__find_ids("EVENT1 if #core_wide else EVENT2",
174 NULL, ctx) == 0);
175 TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);
176 TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids,
177 corewide ? "EVENT1" : "EVENT2",
178 &val_ptr));
179
180 }
181 /* The expression is a constant 1.0 without needing to evaluate EVENT1. */
182 expr__ctx_clear(ctx);
183 TEST_ASSERT_VAL("find ids",
184 expr__find_ids("1.0 if EVENT1 > 100.0 else 1.0",
185 NULL, ctx) == 0);
186 TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0);
187
188 /* Test toplogy constants appear well ordered. */
189 expr__ctx_clear(ctx);
190 TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);
191 TEST_ASSERT_VAL("#num_cores", expr__parse(&num_cores, ctx, "#num_cores") == 0);
192 TEST_ASSERT_VAL("#num_cpus >= #num_cores", num_cpus >= num_cores);
193 TEST_ASSERT_VAL("#num_dies", expr__parse(&num_dies, ctx, "#num_dies") == 0);
194 TEST_ASSERT_VAL("#num_cores >= #num_dies", num_cores >= num_dies);
195 TEST_ASSERT_VAL("#num_packages", expr__parse(&num_packages, ctx, "#num_packages") == 0);
196
197 if (num_dies) // Some platforms do not have CPU die support, for example s390
198 TEST_ASSERT_VAL("#num_dies >= #num_packages", num_dies >= num_packages);
199
200 TEST_ASSERT_VAL("#system_tsc_freq", expr__parse(&val, ctx, "#system_tsc_freq") == 0);
201 if (is_intel)
202 TEST_ASSERT_VAL("#system_tsc_freq > 0", val > 0);
203 else
204 TEST_ASSERT_VAL("#system_tsc_freq == 0", fpclassify(val) == FP_ZERO);
205
206 /*
207 * Source count returns the number of events aggregating in a leader
208 * event including the leader. Check parsing yields an id.
209 */
210 expr__ctx_clear(ctx);
211 TEST_ASSERT_VAL("source count",
212 expr__find_ids("source_count(EVENT1)",
213 NULL, ctx) == 0);
214 TEST_ASSERT_VAL("source count", hashmap__size(ctx->ids) == 1);
215 TEST_ASSERT_VAL("source count", hashmap__find(ctx->ids, "EVENT1", &val_ptr));
216
217 expr__ctx_free(ctx);
218
219 return 0;
220}
221
222DEFINE_SUITE("Simple expression parser", expr);