perf c2c report: Add c2c related stats stdio output

Display c2c related configuration options/setup.
So far it's output of monitored events:

  $ perf c2c report --stats
  ...

  =================================================
                   c2c details
  =================================================
    Events                            : cpu/mem-loads,ldlat=50/pp
                                      : cpu/mem-stores/pp

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-ypz84f3a9fumyttrxurm458z@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 27 insertions, 6 deletions

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index f7b118b759cf..88d88eac53aa 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -13,6 +13,8 @@
 #include "tool.h"
 #include "data.h"
 #include "sort.h"
+#include "evlist.h"
+#include "evsel.h"
 #include <asm/bug.h>
 #include "ui/browsers/hists.h"
 
@@ -1893,13 +1895,32 @@ static void print_pareto(FILE *out)
         }
 }
 
-static void perf_c2c__hists_fprintf(FILE *out)
+static void print_c2c_info(FILE *out, struct perf_session *session)
+{
+        struct perf_evlist *evlist = session->evlist;
+        struct perf_evsel *evsel;
+        bool first = true;
+
+        fprintf(out, "=================================================\n");
+        fprintf(out, "                 c2c details                     \n");
+        fprintf(out, "=================================================\n");
+
+        evlist__for_each_entry(evlist, evsel) {
+                fprintf(out, "%-36s: %s\n", first ? "  Events" : "",
+                        perf_evsel__name(evsel));
+                first = false;
+        }
+}
+
+static void perf_c2c__hists_fprintf(FILE *out, struct perf_session *session)
 {
         setup_pager();
 
         print_c2c__display_stats(out);
         fprintf(out, "\n");
         print_shared_cacheline_info(out);
+        fprintf(out, "\n");
+        print_c2c_info(out, session);
 
         if (c2c.stats_only)
                 return;
@@ -2073,18 +2094,18 @@ out:
         return 0;
 }
 
-static void perf_c2c_display(void)
+static void perf_c2c_display(struct perf_session *session)
 {
         if (c2c.use_stdio)
-                perf_c2c__hists_fprintf(stdout);
+                perf_c2c__hists_fprintf(stdout, session);
         else
                 perf_c2c__hists_browse(&c2c.hists.hists);
 }
 #else
-static void perf_c2c_display(void)
+static void perf_c2c_display(struct perf_session *session)
 {
         use_browser = 0;
-        perf_c2c__hists_fprintf(stdout);
+        perf_c2c__hists_fprintf(stdout, session);
 }
 #endif /* HAVE_SLANG_SUPPORT */
 
@@ -2197,7 +2218,7 @@ static int perf_c2c__report(int argc, const char **argv)
 
         ui_quirks();
 
-        perf_c2c_display();
+        perf_c2c_display(session);
 
 out_session:
         perf_session__delete(session);