linux-kernel - [PATCH v1 1/8] perf mem: Add structure field c2c_stats::tot

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Date:   Thu, 15 Oct 2020 15:50:34 +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>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...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 v1 1/8] perf mem: Add structure field c2c_stats::tot_llchit

Add new field c2c_stats::tot_llchit to count total number for LLC hit:

  c2c_stats::tot_llchit = c2c_stats::lcl_hitm + c2c_stats::ld_llchit

This is the preparation for additional sorting with total LLC hit, and
will be used in perf c2c report in following patches.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
---
 tools/perf/util/mem-events.c | 3 +++
 tools/perf/util/mem-events.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index ea0af0bc4314..0ad27bef0698 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -371,6 +371,8 @@ do {				\
 					HITM_INC(lcl_hitm);
 				else
 					stats->ld_llchit++;
+
+				stats->tot_llchit++;
 			}
 
 			if (lvl & P(LVL, LOC_RAM)) {
@@ -455,6 +457,7 @@ void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
 	stats->ld_fbhit		+= add->ld_fbhit;
 	stats->ld_l1hit		+= add->ld_l1hit;
 	stats->ld_l2hit		+= add->ld_l2hit;
+	stats->tot_llchit	+= add->tot_llchit;
 	stats->ld_llchit	+= add->ld_llchit;
 	stats->lcl_hitm		+= add->lcl_hitm;
 	stats->rmt_hitm		+= add->rmt_hitm;
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index 904dad34f7f7..a1fa1c312ddb 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -68,6 +68,7 @@ struct c2c_stats {
 	u32	ld_fbhit;            /* count of loads hitting Fill Buffer */
 	u32	ld_l1hit;            /* count of loads that hit L1D */
 	u32	ld_l2hit;            /* count of loads that hit L2D */
+	u32	tot_llchit;          /* count of all loads that hit LLC */
 	u32	ld_llchit;           /* count of loads that hit LLC */
 	u32	lcl_hitm;            /* count of loads with local HITM  */
 	u32	rmt_hitm;            /* count of loads with remote HITM */
-- 
2.17.1