1 // SPDX-License-Identifier: GPL-2.0 2 #include <inttypes.h> 3 #include "util/debug.h" 4 #include "util/dso.h" 5 #include "util/event.h" // struct perf_sample 6 #include "util/map.h" 7 #include "util/symbol.h" 8 #include "util/sort.h" 9 #include "util/evsel.h" 10 #include "util/machine.h" 11 #include "util/thread.h" 12 #include "tests/hists_common.h" 13 #include <linux/kernel.h> 14 #include <linux/perf_event.h> 15 16 static struct { 17 u32 pid; 18 const char *comm; 19 } fake_threads[] = { 20 { FAKE_PID_PERF1, "perf" }, 21 { FAKE_PID_PERF2, "perf" }, 22 { FAKE_PID_BASH, "bash" }, 23 }; 24 25 static struct { 26 u32 pid; 27 u64 start; 28 const char *filename; 29 } fake_mmap_info[] = { 30 { FAKE_PID_PERF1, FAKE_MAP_PERF, "perf" }, 31 { FAKE_PID_PERF1, FAKE_MAP_LIBC, "libc" }, 32 { FAKE_PID_PERF1, FAKE_MAP_KERNEL, "[kernel]" }, 33 { FAKE_PID_PERF2, FAKE_MAP_PERF, "perf" }, 34 { FAKE_PID_PERF2, FAKE_MAP_LIBC, "libc" }, 35 { FAKE_PID_PERF2, FAKE_MAP_KERNEL, "[kernel]" }, 36 { FAKE_PID_BASH, FAKE_MAP_BASH, "bash" }, 37 { FAKE_PID_BASH, FAKE_MAP_LIBC, "libc" }, 38 { FAKE_PID_BASH, FAKE_MAP_KERNEL, "[kernel]" }, 39 }; 40 41 struct fake_sym { 42 u64 start; 43 u64 length; 44 const char *name; 45 }; 46 47 static struct fake_sym perf_syms[] = { 48 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" }, 49 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "run_command" }, 50 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "cmd_record" }, 51 }; 52 53 static struct fake_sym bash_syms[] = { 54 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" }, 55 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "xmalloc" }, 56 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "xfree" }, 57 }; 58 59 static struct fake_sym libc_syms[] = { 60 { 700, 100, "malloc" }, 61 { 800, 100, "free" }, 62 { 900, 100, "realloc" }, 63 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "malloc" }, 64 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "free" }, 65 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "realloc" }, 66 }; 67 68 static struct fake_sym kernel_syms[] = { 69 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "schedule" }, 70 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "page_fault" }, 71 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "sys_perf_event_open" }, 72 }; 73 74 static struct { 75 const char *dso_name; 76 struct fake_sym *syms; 77 size_t nr_syms; 78 } fake_symbols[] = { 79 { "perf", perf_syms, ARRAY_SIZE(perf_syms) }, 80 { "bash", bash_syms, ARRAY_SIZE(bash_syms) }, 81 { "libc", libc_syms, ARRAY_SIZE(libc_syms) }, 82 { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) }, 83 }; 84 85 struct machine *setup_fake_machine(struct machines *machines) 86 { 87 struct machine *machine = machines__find(machines, HOST_KERNEL_ID); 88 size_t i; 89 90 if (machine == NULL) { 91 pr_debug("Not enough memory for machine setup\n"); 92 return NULL; 93 } 94 95 for (i = 0; i < ARRAY_SIZE(fake_threads); i++) { 96 struct thread *thread; 97 98 thread = machine__findnew_thread(machine, fake_threads[i].pid, 99 fake_threads[i].pid); 100 if (thread == NULL) 101 goto out; 102 103 thread__set_comm(thread, fake_threads[i].comm, 0); 104 thread__put(thread); 105 } 106 107 for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) { 108 struct perf_sample sample = { 109 .cpumode = PERF_RECORD_MISC_USER, 110 }; 111 union perf_event fake_mmap_event = { 112 .mmap = { 113 .pid = fake_mmap_info[i].pid, 114 .tid = fake_mmap_info[i].pid, 115 .start = fake_mmap_info[i].start, 116 .len = FAKE_MAP_LENGTH, 117 .pgoff = 0ULL, 118 }, 119 }; 120 121 strcpy(fake_mmap_event.mmap.filename, 122 fake_mmap_info[i].filename); 123 124 machine__process_mmap_event(machine, &fake_mmap_event, &sample); 125 } 126 127 for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) { 128 size_t k; 129 struct dso *dso; 130 131 dso = machine__findnew_dso(machine, fake_symbols[i].dso_name); 132 if (dso == NULL) 133 goto out; 134 135 /* emulate dso__load() */ 136 dso__set_loaded(dso); 137 138 for (k = 0; k < fake_symbols[i].nr_syms; k++) { 139 struct symbol *sym; 140 struct fake_sym *fsym = &fake_symbols[i].syms[k]; 141 142 sym = symbol__new(fsym->start, fsym->length, 143 STB_GLOBAL, STT_FUNC, fsym->name); 144 if (sym == NULL) { 145 dso__put(dso); 146 goto out; 147 } 148 149 symbols__insert(&dso->symbols, sym); 150 } 151 152 dso__put(dso); 153 } 154 155 return machine; 156 157 out: 158 pr_debug("Not enough memory for machine setup\n"); 159 machine__delete_threads(machine); 160 return NULL; 161 } 162 163 void print_hists_in(struct hists *hists) 164 { 165 int i = 0; 166 struct rb_root_cached *root; 167 struct rb_node *node; 168 169 if (hists__has(hists, need_collapse)) 170 root = &hists->entries_collapsed; 171 else 172 root = hists->entries_in; 173 174 pr_info("----- %s --------\n", __func__); 175 node = rb_first_cached(root); 176 while (node) { 177 struct hist_entry *he; 178 179 he = rb_entry(node, struct hist_entry, rb_node_in); 180 181 if (!he->filtered) { 182 struct dso *dso = map__dso(he->ms.map); 183 184 pr_info("%2d: entry: %-8s [%-8s] %20s: period = %"PRIu64"\n", 185 i, thread__comm_str(he->thread), 186 dso->short_name, 187 he->ms.sym->name, he->stat.period); 188 } 189 190 i++; 191 node = rb_next(node); 192 } 193 } 194 195 void print_hists_out(struct hists *hists) 196 { 197 int i = 0; 198 struct rb_root_cached *root; 199 struct rb_node *node; 200 201 root = &hists->entries; 202 203 pr_info("----- %s --------\n", __func__); 204 node = rb_first_cached(root); 205 while (node) { 206 struct hist_entry *he; 207 208 he = rb_entry(node, struct hist_entry, rb_node); 209 210 if (!he->filtered) { 211 struct dso *dso = map__dso(he->ms.map); 212 213 pr_info("%2d: entry: %8s:%5d [%-8s] %20s: period = %"PRIu64"/%"PRIu64"\n", 214 i, thread__comm_str(he->thread), thread__tid(he->thread), 215 dso->short_name, 216 he->ms.sym->name, he->stat.period, 217 he->stat_acc ? he->stat_acc->period : 0); 218 } 219 220 i++; 221 node = rb_next(node); 222 } 223 } 224