tools/perf/tests/hists_common.c

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