perf c2c report: Add stdio output support

Adding the --stdio option output support. The output
tables are dumped directly to the stdio.

$ perf c2c report
  =================================================
             Shared Data Cache Line Table
  =================================================
  #
  #                       Total           ----- LLC Load Hitm -----  ---- Store Reference ----  --- Load Dram ----      LLC    Total  ----- Core Load Hit -----  -- LLC Load Hit --
  #          Cacheline  records    %hitm    Total      Lcl      Rmt    Total    L1Hit   L1Miss       Lcl       Rmt  Ld Miss    Loads       FB       L1       L2       Llc       Rmt
  # ..................  .......  .......  .......  .......  .......  .......  .......  .......  ........  ........  .......  .......  .......  .......  .......  ........  ........
  #
    0xffff88000235f840       17    0.00%        0        0        0       17       17        0         0         0        0        0        0        0        0         0         0
  ...

  =================================================
        Shared Cache Line Distribution Pareto
  =================================================
  #
  # ----- HITM -----  -- Store Refs --        Data address                                  ---------- cycles ----------       cpu                                   Shared
  #     Rmt      Lcl   L1 Hit  L1 Miss              Offset      Pid                    Tid  rmt hitm  lcl hitm      load       cnt                Symbol             Object  Node
  # .......  .......  .......  .......  ..................  .......  .....................  ........  ........  ........  ........  ....................  .................  ....
  #
    ------------------------------------------------------
          0        0       17        0  0xffff88000235f840
    ------------------------------------------------------
      0.00%    0.00%    5.88%    0.00%                 0x0    11474    11474:kworker/u16:5         0         0         0         1  [k] rmap_walk_file             [kernel.kallsyms]   0
      0.00%    0.00%    5.88%    0.00%                0x10    11474    11474:kworker/u16:5         0         0         0         1  [k] lock_page_memcg            [kernel.kallsyms]   0
      0.00%    0.00%   11.76%    0.00%                0x20    11474    11474:kworker/u16:5         0         0         0         1  [k] page_mapping               [kernel.kallsyms]   0
      0.00%    0.00%   64.71%    0.00%                0x28    11474    11474:kworker/u16:5         0         0         0         1  [k] __test_set_page_writeback  [kernel.kallsyms]   0
      0.00%    0.00%   11.76%    0.00%                0x30    11474    11474:kworker/u16:5         0         0         0         1  [k] page_mapped                [kernel.kallsyms]   0
  ...

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-eorco9r0oeesjve77pkkg43s@git.kernel.org
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 c271261fcaf12b58f41447690dfd935e2d52ec72..33db26c6ca63deddd79801d67ab79267d1246290 100644 (file)
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -13,6 +13,7 @@
 #include "tool.h"
 #include "data.h"
 #include "sort.h"
+#include <asm/bug.h>
 
 struct c2c_hists {
        struct hists            hists;
@@ -1722,6 +1723,85 @@ static int setup_nodes(struct perf_session *session)
        return 0;
 }
 
+static void print_cacheline(struct c2c_hists *c2c_hists,
+                           struct hist_entry *he_cl,
+                           struct perf_hpp_list *hpp_list,
+                           FILE *out)
+{
+       char bf[1000];
+       struct perf_hpp hpp = {
+               .buf            = bf,
+               .size           = 1000,
+       };
+       static bool once;
+
+       if (!once) {
+               hists__fprintf_headers(&c2c_hists->hists, out);
+               once = true;
+       } else {
+               fprintf(out, "\n");
+       }
+
+       fprintf(out, "  ------------------------------------------------------\n");
+       __hist_entry__snprintf(he_cl, &hpp, hpp_list);
+       fprintf(out, "%s\n", bf);
+       fprintf(out, "  ------------------------------------------------------\n");
+
+       hists__fprintf(&c2c_hists->hists, false, 0, 0, 0, out, true);
+}
+
+static void print_pareto(FILE *out)
+{
+       struct perf_hpp_list hpp_list;
+       struct rb_node *nd;
+       int ret;
+
+       perf_hpp_list__init(&hpp_list);
+       ret = hpp_list__parse(&hpp_list,
+                               "cl_rmt_hitm,"
+                               "cl_lcl_hitm,"
+                               "cl_stores_l1hit,"
+                               "cl_stores_l1miss,"
+                               "dcacheline",
+                               NULL);
+
+       if (WARN_ONCE(ret, "failed to setup sort entries\n"))
+               return;
+
+       nd = rb_first(&c2c.hists.hists.entries);
+
+       for (; nd; nd = rb_next(nd)) {
+               struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
+               struct c2c_hist_entry *c2c_he;
+
+               if (he->filtered)
+                       continue;
+
+               c2c_he = container_of(he, struct c2c_hist_entry, he);
+               print_cacheline(c2c_he->hists, he, &hpp_list, out);
+       }
+}
+
+static void perf_c2c__hists_fprintf(FILE *out)
+{
+       setup_pager();
+
+       fprintf(out, "\n");
+       fprintf(out, "=================================================\n");
+       fprintf(out, "           Shared Data Cache Line Table          \n");
+       fprintf(out, "=================================================\n");
+       fprintf(out, "#\n");
+
+       hists__fprintf(&c2c.hists.hists, true, 0, 0, 0, stdout, false);
+
+       fprintf(out, "\n");
+       fprintf(out, "=================================================\n");
+       fprintf(out, "      Shared Cache Line Distribution Pareto      \n");
+       fprintf(out, "=================================================\n");
+       fprintf(out, "#\n");
+
+       print_pareto(out);
+}
 
 static int perf_c2c__report(int argc, const char **argv)
 {
@@ -1806,6 +1886,9 @@ static int perf_c2c__report(int argc, const char **argv)
 
        ui_progress__finish();
 
+       use_browser = 0;
+       perf_c2c__hists_fprintf(stdout);
+
 out_session:
        perf_session__delete(session);
 out: