tools/perf/tests/hists_common.c

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