perf mem: Introduce perf_mem_events__name function

[cascardo/linux.git] / tools / perf / builtin-mem.c

diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 3901700..88aeac9 100644 (file)
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -6,6 +6,8 @@
 #include "util/tool.h"
 #include "util/session.h"
 #include "util/data.h"
+#include "util/mem-events.h"
+#include "util/debug.h"
 
 #define MEM_OPERATION_LOAD     0x1
 #define MEM_OPERATION_STORE    0x2
@@ -21,11 +23,56 @@ struct perf_mem {
        DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 };
 
+static int parse_record_events(const struct option *opt,
+                              const char *str, int unset __maybe_unused)
+{
+       struct perf_mem *mem = *(struct perf_mem **)opt->value;
+       int j;
+
+       if (strcmp(str, "list")) {
+               if (!perf_mem_events__parse(str)) {
+                       mem->operation = 0;
+                       return 0;
+               }
+               exit(-1);
+       }
+
+       for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
+               struct perf_mem_event *e = &perf_mem_events[j];
+
+               fprintf(stderr, "%-13s%-*s%s\n",
+                       e->tag,
+                       verbose ? 25 : 0,
+                       verbose ? perf_mem_events__name(j) : "",
+                       e->supported ? ": available" : "");
+       }
+       exit(0);
+}
+
+static const char * const __usage[] = {
+       "perf mem record [<options>] [<command>]",
+       "perf mem record [<options>] -- <command> [<options>]",
+       NULL
+};
+
+static const char * const *record_mem_usage = __usage;
+
 static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
 {
        int rec_argc, i = 0, j;
        const char **rec_argv;
        int ret;
+       struct option options[] = {
+       OPT_CALLBACK('e', "event", &mem, "event",
+                    "event selector. use 'perf mem record -e list' to list available events",
+                    parse_record_events),
+       OPT_INCR('v', "verbose", &verbose,
+                "be more verbose (show counter open errors, etc)"),
+       OPT_END()
+       };
+
+       argc = parse_options(argc, argv, options, record_mem_usage,
+                            PARSE_OPT_STOP_AT_NON_OPTION);
 
        rec_argc = argc + 7; /* max number of arguments */
        rec_argv = calloc(rec_argc + 1, sizeof(char *));
@@ -35,23 +82,40 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
        rec_argv[i++] = "record";
 
        if (mem->operation & MEM_OPERATION_LOAD)
+               perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
+
+       if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
                rec_argv[i++] = "-W";
 
        rec_argv[i++] = "-d";
 
-       if (mem->operation & MEM_OPERATION_LOAD) {
-               rec_argv[i++] = "-e";
-               rec_argv[i++] = "cpu/mem-loads/pp";
-       }
+       for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
+               if (!perf_mem_events[j].record)
+                       continue;
+
+               if (!perf_mem_events[j].supported) {
+                       pr_err("failed: event '%s' not supported\n",
+                              perf_mem_events__name(j));
+                       return -1;
+               }
 
-       if (mem->operation & MEM_OPERATION_STORE) {
                rec_argv[i++] = "-e";
-               rec_argv[i++] = "cpu/mem-stores/pp";
-       }
+               rec_argv[i++] = perf_mem_events__name(j);
+       };
 
-       for (j = 1; j < argc; j++, i++)
+       for (j = 0; j < argc; j++, i++)
                rec_argv[i] = argv[j];
 
+       if (verbose > 0) {
+               pr_debug("calling: record ");
+
+               while (rec_argv[j]) {
+                       pr_debug("%s ", rec_argv[j]);
+                       j++;
+               }
+               pr_debug("\n");
+       }
+
        ret = cmd_record(i, rec_argv, NULL);
        free(rec_argv);
        return ret;
@@ -298,6 +362,10 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
                NULL
        };
 
+       if (perf_mem_events__init()) {
+               pr_err("failed: memory events not supported\n");
+               return -1;
+       }
 
        argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
                                        mem_usage, PARSE_OPT_STOP_AT_NON_OPTION);