SAFE public projects git trees. - safe/jmp/linux-2.6/blob - tools/perf/builtin-bench.c

   1 /*
   2  *
   3  * builtin-bench.c
   4  *
   5  * General benchmarking subsystem provided by perf
   6  *
   7  * Copyright (C) 2009, Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
   8  *
   9  */
  10
  11 /*
  12  *
  13  * Available subsystem list:
  14  *  sched ... scheduler and IPC mechanism
  15  *
  16  */
  17
  18 #include "perf.h"
  19 #include "util/util.h"
  20 #include "util/parse-options.h"
  21 #include "builtin.h"
  22 #include "bench/bench.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 struct bench_suite {
  29         const char *name;
  30         const char *summary;
  31         int (*fn)(int, const char **, const char *);
  32 };
  33
  34 static struct bench_suite sched_suites[] = {
  35         { "messaging",
  36           "Benchmark for scheduler and IPC mechanisms",
  37           bench_sched_messaging },
  38         { "pipe",
  39           "Flood of communication over pipe() between two processes",
  40           bench_sched_pipe      },
  41         { NULL,
  42           NULL,
  43           NULL                  }
  44 };
  45
  46 struct bench_subsys {
  47         const char *name;
  48         const char *summary;
  49         struct bench_suite *suites;
  50 };
  51
  52 static struct bench_subsys subsystems[] = {
  53         { "sched",
  54           "scheduler and IPC mechanism",
  55           sched_suites },
  56         { NULL,
  57           NULL,
  58           NULL         }
  59 };
  60
  61 static void dump_suites(int subsys_index)
  62 {
  63         int i;
  64
  65         printf("List of available suites for %s...\n\n",
  66                subsystems[subsys_index].name);
  67
  68         for (i = 0; subsystems[subsys_index].suites[i].name; i++)
  69                 printf("\t%s: %s\n",
  70                        subsystems[subsys_index].suites[i].name,
  71                        subsystems[subsys_index].suites[i].summary);
  72
  73         printf("\n");
  74         return;
  75 }
  76
  77 int cmd_bench(int argc, const char **argv, const char *prefix __used)
  78 {
  79         int i, j, status = 0;
  80
  81         if (argc < 2) {
  82                 /* No subsystem specified. */
  83                 printf("Usage: perf bench <subsystem> <suite> [<options>]\n\n");
  84                 printf("List of available subsystems...\n\n");
  85
  86                 for (i = 0; subsystems[i].name; i++)
  87                         printf("\t%s: %s\n",
  88                                subsystems[i].name, subsystems[i].summary);
  89                 printf("\n");
  90
  91                 goto end;
  92         }
  93
  94         for (i = 0; subsystems[i].name; i++) {
  95                 if (strcmp(subsystems[i].name, argv[1]))
  96                         continue;
  97
  98                 if (argc < 3) {
  99                         /* No suite specified. */
 100                         dump_suites(i);
 101                         goto end;
 102                 }
 103
 104                 for (j = 0; subsystems[i].suites[j].name; j++) {
 105                         if (strcmp(subsystems[i].suites[j].name, argv[2]))
 106                                 continue;
 107
 108                         status = subsystems[i].suites[j].fn(argc - 2,
 109                                                             argv + 2, prefix);
 110                         goto end;
 111                 }
 112
 113                 if (!strcmp(argv[2], "-h") || !strcmp(argv[2], "--help")) {
 114                         dump_suites(i);
 115                         goto end;
 116                 }
 117
 118                 printf("Unknown suite:%s for %s\n", argv[2], argv[1]);
 119                 status = 1;
 120                 goto end;
 121         }
 122
 123         printf("Unknown subsystem:%s\n", argv[1]);
 124         status = 1;
 125
 126 end:
 127         return status;
 128 }