linux-kernel - [PATCH 22/52] perf c2c report: Add total loads sort key

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Message-Id: <1476975876-2522-23-git-send-email-acme@kernel.org>
Date:   Thu, 20 Oct 2016 12:04:06 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Linux Weekly News <lwn@....net>,
        Jiri Olsa <jolsa@...nel.org>, Andi Kleen <andi@...stfloor.org>,
        David Ahern <dsahern@...il.com>,
        Don Zickus <dzickus@...hat.com>, Joe Mario <jmario@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 22/52] perf c2c report: Add total loads sort key

From: Jiri Olsa <jolsa@...nel.org>

It is to be displayed in the main cachelines overall output:

  tot_loads

It displays sum of all load accesses for cacheline.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Don Zickus <dzickus@...hat.com>
Cc: Joe Mario <jmario@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/n/tip-czd17qsh5u5z0yc1estz9l2y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-c2c.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index ff5b5b81d333..2411fe025bc7 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -514,6 +514,57 @@ tot_recs_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
 	return tot_recs_left - tot_recs_right;
 }
 
+static uint64_t total_loads(struct c2c_stats *stats)
+{
+	uint64_t lclmiss, ldcnt;
+
+	lclmiss  = stats->lcl_dram +
+		   stats->rmt_dram +
+		   stats->rmt_hitm +
+		   stats->rmt_hit;
+
+	ldcnt    = lclmiss +
+		   stats->ld_fbhit +
+		   stats->ld_l1hit +
+		   stats->ld_l2hit +
+		   stats->ld_llchit +
+		   stats->lcl_hitm;
+
+	return ldcnt;
+}
+
+static int
+tot_loads_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+		struct hist_entry *he)
+{
+	struct c2c_hist_entry *c2c_he;
+	int width = c2c_width(fmt, hpp, he->hists);
+	uint64_t tot_recs;
+
+	c2c_he = container_of(he, struct c2c_hist_entry, he);
+	tot_recs = total_loads(&c2c_he->stats);
+
+	return scnprintf(hpp->buf, hpp->size, "%*" PRIu64, width, tot_recs);
+}
+
+static int64_t
+tot_loads_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
+	      struct hist_entry *left, struct hist_entry *right)
+{
+	struct c2c_hist_entry *c2c_left;
+	struct c2c_hist_entry *c2c_right;
+	uint64_t tot_recs_left;
+	uint64_t tot_recs_right;
+
+	c2c_left  = container_of(left, struct c2c_hist_entry, he);
+	c2c_right = container_of(right, struct c2c_hist_entry, he);
+
+	tot_recs_left  = total_loads(&c2c_left->stats);
+	tot_recs_right = total_loads(&c2c_right->stats);
+
+	return tot_recs_left - tot_recs_right;
+}
+
 #define HEADER_LOW(__h)			\
 	{				\
 		.line[1] = {		\
@@ -709,6 +760,14 @@ static struct c2c_dimension dim_tot_recs = {
 	.width		= 7,
 };
 
+static struct c2c_dimension dim_tot_loads = {
+	.header		= HEADER_BOTH("Total", "Loads"),
+	.name		= "tot_loads",
+	.cmp		= tot_loads_cmp,
+	.entry		= tot_loads_entry,
+	.width		= 7,
+};
+
 static struct c2c_dimension *dimensions[] = {
 	&dim_dcacheline,
 	&dim_offset,
@@ -730,6 +789,7 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_ld_rmthit,
 	&dim_ld_llcmiss,
 	&dim_tot_recs,
+	&dim_tot_loads,
 	NULL,
 };
 
-- 
2.7.4