[PATCH 35/52] perf c2c report: Add stdio output support

Arnaldo Carvalho de Melo
2016-10-20T15:07:43Z

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>
---
tools/perf/builtin-c2c.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index c271261fcaf1..33db26c6ca63 100644
--- 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:
--
2.7.4