linux-kernel - [PATCH v2 3/9] perf c2c: Organize metrics based on memory hierarchy

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Date:   Thu, 15 Oct 2020 15:45:42 +0100
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>, Joe Mario <jmario@...hat.com>,
        David Ahern <dsahern@...il.com>,
        Don Zickus <dzickus@...hat.com>, Al Grant <Al.Grant@....com>,
        James Clark <james.clark@....com>, linux-kernel@...r.kernel.org
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v2 3/9] perf c2c: Organize metrics based on memory hierarchy

The metrics are not organized based on memory hierarchy, e.g. the tool
doesn't organize the metrics order based on memory nodes from the close
node (e.g. L1/L2 cache) to far node (e.g. L3 cache and DRAM).

To output metrics with more friendly form, this patch refines the
metrics order based on memory hierarchy:

  "Core Load Hit" => "LLC Load Hit" => "LLC Ld Miss" => "Load Dram"

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Tested-by: Joe Mario <jmario@...hat.com>
---
 tools/perf/builtin-c2c.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index a2ad24799aea..404d4739b8c1 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2852,10 +2852,10 @@ static int perf_c2c__report(int argc, const char **argv)
 			"tot_loads,"
 			"tot_stores,"
 			"stores_l1hit,stores_l1miss,"
-			"dram_lcl,dram_rmt,"
-			"ld_llcmiss,"
 			"ld_fbhit,ld_l1hit,ld_l2hit,"
-			"ld_lclhit,ld_rmthit",
+			"ld_lclhit,ld_rmthit,"
+			"ld_llcmiss,"
+			"dram_lcl,dram_rmt",
 			c2c.display == DISPLAY_TOT ? "tot_hitm" :
 			c2c.display == DISPLAY_LCL ? "lcl_hitm" : "rmt_hitm"
 			);
-- 
2.17.1