[PATCH v1 3/8] perf c2c: Add dimensions for LLC load hit

From: Leo Yan <leo.yan@linaro.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	Kan Liang <kan.liang@linux.intel.com>,
	Andi Kleen <ak@linux.intel.com>, Ian Rogers <irogers@google.com>,
	Joe Mario <jmario@redhat.com>, David Ahern <dsahern@gmail.com>,
	Don Zickus <dzickus@redhat.com>, Al Grant <Al.Grant@arm.com>,
	James Clark <james.clark@arm.com>,
	linux-kernel@vger.kernel.org
Cc: Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v1 3/8] perf c2c: Add dimensions for LLC load hit
Date: Thu, 15 Oct 2020 15:50:36 +0100	[thread overview]
Message-ID: <20201015145041.10953-4-leo.yan@linaro.org> (raw)
In-Reply-To: <20201015145041.10953-1-leo.yan@linaro.org>

Add dimensions for LLC load hit and its associated percentage
calculation, which is to be displayed in the single cache line output.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 tools/perf/builtin-c2c.c | 51 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 5fb77fcd3c9c..3f6271a779c4 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -947,6 +947,7 @@ static double percent_ ## __f(struct c2c_hist_entry *c2c_he)			\
 
 PERCENT_FN(rmt_hitm)
 PERCENT_FN(lcl_hitm)
+PERCENT_FN(ld_llchit)
 PERCENT_FN(st_l1hit)
 PERCENT_FN(st_l1miss)
 
@@ -1012,6 +1013,37 @@ percent_lcl_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
 	return per_left - per_right;
 }
 
+static int
+percent_llc_hit_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+		       struct hist_entry *he)
+{
+	int width = c2c_width(fmt, hpp, he->hists);
+	double per = PERCENT(he, ld_llchit);
+	char buf[10];
+
+	return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
+}
+
+static int
+percent_llc_hit_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+		      struct hist_entry *he)
+{
+	return percent_color(fmt, hpp, he, percent_ld_llchit);
+}
+
+static int64_t
+percent_llc_hit_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
+		    struct hist_entry *left, struct hist_entry *right)
+{
+	double per_left;
+	double per_right;
+
+	per_left  = PERCENT(left, ld_llchit);
+	per_right = PERCENT(right, ld_llchit);
+
+	return per_left - per_right;
+}
+
 static int
 percent_stores_l1hit_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 			   struct hist_entry *he)
@@ -1377,6 +1409,14 @@ static struct c2c_dimension dim_cl_rmt_hitm = {
 	.width		= 7,
 };
 
+static struct c2c_dimension dim_cl_llc_hit = {
+	.header		= HEADER_SPAN("--- LLC Load ---", "LclHit", 1),
+	.name		= "cl_llc_hit",
+	.cmp		= ld_llchit_cmp,
+	.entry		= ld_llchit_entry,
+	.width		= 7,
+};
+
 static struct c2c_dimension dim_cl_lcl_hitm = {
 	.header		= HEADER_SPAN_LOW("Lcl"),
 	.name		= "cl_lcl_hitm",
@@ -1530,6 +1570,15 @@ static struct c2c_dimension dim_percent_lcl_hitm = {
 	.width		= 7,
 };
 
+static struct c2c_dimension dim_percent_llc_hit = {
+	.header		= HEADER_SPAN("---- LLC LD ----", "LclHit", 1),
+	.name		= "percent_llc_hit",
+	.cmp		= percent_llc_hit_cmp,
+	.entry		= percent_llc_hit_entry,
+	.color		= percent_llc_hit_color,
+	.width		= 7,
+};
+
 static struct c2c_dimension dim_percent_stores_l1hit = {
 	.header		= HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
 	.name		= "percent_stores_l1hit",
@@ -1673,6 +1722,7 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_tot_hitm,
 	&dim_lcl_hitm,
 	&dim_rmt_hitm,
+	&dim_cl_llc_hit,
 	&dim_cl_lcl_hitm,
 	&dim_cl_rmt_hitm,
 	&dim_tot_stores,
@@ -1692,6 +1742,7 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_percent_llchit,
 	&dim_percent_rmt_hitm,
 	&dim_percent_lcl_hitm,
+	&dim_percent_llc_hit,
 	&dim_percent_stores_l1hit,
 	&dim_percent_stores_l1miss,
 	&dim_dram_lcl,
-- 
2.17.1

