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