1 files changed, 245 insertions, 0 deletions

diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
new file mode 100644
index 000000000000..46996774e559
--- /dev/null
+++ b/tools/perf/builtin-bench.c
@@ -0,0 +1,245 @@
+/*
+ *
+ * builtin-bench.c
+ *
+ * General benchmarking subsystem provided by perf
+ *
+ * Copyright (C) 2009, Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
+ *
+ */
+
+/*
+ *
+ * Available subsystem list:
+ *  sched ... scheduler and IPC mechanism
+ *  mem   ... memory access performance
+ *
+ */
+
+#include "perf.h"
+#include "util/util.h"
+#include "util/parse-options.h"
+#include "builtin.h"
+#include "bench/bench.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct bench_suite {
+        const char *name;
+        const char *summary;
+        int (*fn)(int, const char **, const char *);
+};
+                                                \
+/* sentinel: easy for help */
+#define suite_all { "all", "test all suite (pseudo suite)", NULL }
+
+static struct bench_suite sched_suites[] = {
+        { "messaging",
+          "Benchmark for scheduler and IPC mechanisms",
+          bench_sched_messaging },
+        { "pipe",
+          "Flood of communication over pipe() between two processes",
+          bench_sched_pipe      },
+        suite_all,
+        { NULL,
+          NULL,
+          NULL                  }
+};
+
+static struct bench_suite mem_suites[] = {
+        { "memcpy",
+          "Simple memory copy in various ways",
+          bench_mem_memcpy },
+        suite_all,
+        { NULL,
+          NULL,
+          NULL             }
+};
+
+struct bench_subsys {
+        const char *name;
+        const char *summary;
+        struct bench_suite *suites;
+};
+
+static struct bench_subsys subsystems[] = {
+        { "sched",
+          "scheduler and IPC mechanism",
+          sched_suites },
+        { "mem",
+          "memory access performance",
+          mem_suites },
+        { "all",                /* sentinel: easy for help */
+          "test all subsystem (pseudo subsystem)",
+          NULL },
+        { NULL,
+          NULL,
+          NULL       }
+};
+
+static void dump_suites(int subsys_index)
+{
+        int i;
+
+        printf("# List of available suites for %s...\n\n",
+               subsystems[subsys_index].name);
+
+        for (i = 0; subsystems[subsys_index].suites[i].name; i++)
+                printf("%14s: %s\n",
+                       subsystems[subsys_index].suites[i].name,
+                       subsystems[subsys_index].suites[i].summary);
+
+        printf("\n");
+        return;
+}
+
+static char *bench_format_str;
+int bench_format = BENCH_FORMAT_DEFAULT;
+
+static const struct option bench_options[] = {
+        OPT_STRING('f', "format", &bench_format_str, "default",
+                    "Specify format style"),
+        OPT_END()
+};
+
+static const char * const bench_usage[] = {
+        "perf bench [<common options>] <subsystem> <suite> [<options>]",
+        NULL
+};
+
+static void print_usage(void)
+{
+        int i;
+
+        printf("Usage: \n");
+        for (i = 0; bench_usage[i]; i++)
+                printf("\t%s\n", bench_usage[i]);
+        printf("\n");
+
+        printf("# List of available subsystems...\n\n");
+
+        for (i = 0; subsystems[i].name; i++)
+                printf("%14s: %s\n",
+                       subsystems[i].name, subsystems[i].summary);
+        printf("\n");
+}
+
+static int bench_str2int(char *str)
+{
+        if (!str)
+                return BENCH_FORMAT_DEFAULT;
+
+        if (!strcmp(str, BENCH_FORMAT_DEFAULT_STR))
+                return BENCH_FORMAT_DEFAULT;
+        else if (!strcmp(str, BENCH_FORMAT_SIMPLE_STR))
+                return BENCH_FORMAT_SIMPLE;
+
+        return BENCH_FORMAT_UNKNOWN;
+}
+
+static void all_suite(struct bench_subsys *subsys)        /* FROM HERE */
+{
+        int i;
+        const char *argv[2];
+        struct bench_suite *suites = subsys->suites;
+
+        argv[1] = NULL;
+        /*
+         * TODO:
+         * preparing preset parameters for
+         * embedded, ordinary PC, HPC, etc...
+         * will be helpful
+         */
+        for (i = 0; suites[i].fn; i++) {
+                printf("# Running %s/%s benchmark...\n",
+                       subsys->name,
+                       suites[i].name);
+
+                argv[1] = suites[i].name;
+                suites[i].fn(1, argv, NULL);
+                printf("\n");
+        }
+}
+
+static void all_subsystem(void)
+{
+        int i;
+        for (i = 0; subsystems[i].suites; i++)
+                all_suite(&subsystems[i]);
+}
+
+int cmd_bench(int argc, const char **argv, const char *prefix __used)
+{
+        int i, j, status = 0;
+
+        if (argc < 2) {
+                /* No subsystem specified. */
+                print_usage();
+                goto end;
+        }
+
+        argc = parse_options(argc, argv, bench_options, bench_usage,
+                             PARSE_OPT_STOP_AT_NON_OPTION);
+
+        bench_format = bench_str2int(bench_format_str);
+        if (bench_format == BENCH_FORMAT_UNKNOWN) {
+                printf("Unknown format descriptor:%s\n", bench_format_str);
+                goto end;
+        }
+
+        if (argc < 1) {
+                print_usage();
+                goto end;
+        }
+
+        if (!strcmp(argv[0], "all")) {
+                all_subsystem();
+                goto end;
+        }
+
+        for (i = 0; subsystems[i].name; i++) {
+                if (strcmp(subsystems[i].name, argv[0]))
+                        continue;
+
+                if (argc < 2) {
+                        /* No suite specified. */
+                        dump_suites(i);
+                        goto end;
+                }
+
+                if (!strcmp(argv[1], "all")) {
+                        all_suite(&subsystems[i]);
+                        goto end;
+                }
+
+                for (j = 0; subsystems[i].suites[j].name; j++) {
+                        if (strcmp(subsystems[i].suites[j].name, argv[1]))
+                                continue;
+
+                        if (bench_format == BENCH_FORMAT_DEFAULT)
+                                printf("# Running %s/%s benchmark...\n",
+                                       subsystems[i].name,
+                                       subsystems[i].suites[j].name);
+                        status = subsystems[i].suites[j].fn(argc - 1,
+                                                            argv + 1, prefix);
+                        goto end;
+                }
+
+                if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
+                        dump_suites(i);
+                        goto end;
+                }
+
+                printf("Unknown suite:%s for %s\n", argv[1], argv[0]);
+                status = 1;
+                goto end;
+        }
+
+        printf("Unknown subsystem:%s\n", argv[0]);
+        status = 1;
+
+end:
+        return status;
+}