perf c2c: Support record for hybrid platform

Support 'perf c2c record' for hybrid platform. On hybrid platform,
such as Alderlake, when executing 'perf c2c record', it actually calls:

record -W -d --phys-data --sample-cpu
-e {cpu_core/mem-loads-aux/,cpu_core/mem-loads,ldlat=30/}:P
-e cpu_atom/mem-loads,ldlat=30/P
-e cpu_core/mem-stores/P
-e cpu_atom/mem-stores/P

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210527001610.10553-9-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index a4fd375..6dea37f 100644 (file)
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -42,6 +42,8 @@
 #include "ui/ui.h"
 #include "ui/progress.h"
 #include "../perf.h"
+#include "pmu.h"
+#include "pmu-hybrid.h"
 
 struct c2c_hists {
        struct hists            hists;
@@ -2907,8 +2909,9 @@ static const char * const *record_mem_usage = __usage_record;
 
 static int perf_c2c__record(int argc, const char **argv)
 {
-       int rec_argc, i = 0, j;
+       int rec_argc, i = 0, j, rec_tmp_nr = 0;
        const char **rec_argv;
+       char **rec_tmp;
        int ret;
        bool all_user = false, all_kernel = false;
        bool event_set = false;
@@ -2932,11 +2935,21 @@ static int perf_c2c__record(int argc, const char **argv)
        argc = parse_options(argc, argv, options, record_mem_usage,
                             PARSE_OPT_KEEP_UNKNOWN);
 
-       rec_argc = argc + 11; /* max number of arguments */
+       if (!perf_pmu__has_hybrid())
+               rec_argc = argc + 11; /* max number of arguments */
+       else
+               rec_argc = argc + 11 * perf_pmu__hybrid_pmu_num();
+
        rec_argv = calloc(rec_argc + 1, sizeof(char *));
        if (!rec_argv)
                return -1;
 
+       rec_tmp = calloc(rec_argc + 1, sizeof(char *));
+       if (!rec_tmp) {
+               free(rec_argv);
+               return -1;
+       }
+
        rec_argv[i++] = "record";
 
        if (!event_set) {
@@ -2964,21 +2977,9 @@ static int perf_c2c__record(int argc, const char **argv)
        rec_argv[i++] = "--phys-data";
        rec_argv[i++] = "--sample-cpu";
 
-       for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
-               e = perf_mem_events__ptr(j);
-               if (!e->record)
-                       continue;
-
-               if (!e->supported) {
-                       pr_err("failed: event '%s' not supported\n",
-                              perf_mem_events__name(j, NULL));
-                       free(rec_argv);
-                       return -1;
-               }
-
-               rec_argv[i++] = "-e";
-               rec_argv[i++] = perf_mem_events__name(j, NULL);
-       }
+       ret = perf_mem_events__record_args(rec_argv, &i, rec_tmp, &rec_tmp_nr);
+       if (ret)
+               goto out;
 
        if (all_user)
                rec_argv[i++] = "--all-user";
@@ -3002,6 +3003,11 @@ static int perf_c2c__record(int argc, const char **argv)
        }
 
        ret = cmd_record(i, rec_argv);
+out:
+       for (i = 0; i < rec_tmp_nr; i++)
+               free(rec_tmp[i]);
+
+       free(rec_tmp);
        free(rec_argv);
        return ret;
 }