perf c2c: Add dimensions for 'N/A' metrics of store operation

Since now we have the statistics 'st_na' for store operations, add
dimensions for the 'N/A' (no available memory level) metrics and the
associated percentage calculation for the single cache line view.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adam Li <adamli@amperemail.onmicrosoft.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Alyssa Ross <hi@alyssa.is>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Li Huafei <lihuafei1@huawei.com>
Cc: Like Xu <likexu@tencent.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220518055729.1869566-3-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-c2c.c

@@ -653,6 +653,7 @@ STAT_FN(lcl_hitm)
 STAT_FN(store)
 STAT_FN(st_l1hit)
 STAT_FN(st_l1miss)
+STAT_FN(st_na)
 STAT_FN(ld_fbhit)
 STAT_FN(ld_l1hit)
 STAT_FN(ld_l2hit)
@@ -677,7 +678,8 @@ static uint64_t total_records(struct c2c_stats *stats)
 
 	total    = ldcnt +
 		   stats->st_l1hit +
-		   stats->st_l1miss;
+		   stats->st_l1miss +
+		   stats->st_na;
 
 	return total;
 }
@@ -899,6 +901,7 @@ PERCENT_FN(rmt_hitm)
 PERCENT_FN(lcl_hitm)
 PERCENT_FN(st_l1hit)
 PERCENT_FN(st_l1miss)
+PERCENT_FN(st_na)
 
 static int
 percent_rmt_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
@@ -1024,6 +1027,37 @@ percent_stores_l1miss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
 	return per_left - per_right;
 }
 
+static int
+percent_stores_na_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, st_na);
+	char buf[10];
+
+	return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
+}
+
+static int
+percent_stores_na_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+			struct hist_entry *he)
+{
+	return percent_color(fmt, hpp, he, percent_st_na);
+}
+
+static int64_t
+percent_stores_na_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, st_na);
+	per_right = PERCENT(right, st_na);
+
+	return per_left - per_right;
+}
+
 STAT_FN(lcl_dram)
 STAT_FN(rmt_dram)
 
@@ -1351,7 +1385,7 @@ static struct c2c_dimension dim_tot_stores = {
 };
 
 static struct c2c_dimension dim_stores_l1hit = {
-	.header		= HEADER_SPAN("---- Stores ----", "L1Hit", 1),
+	.header		= HEADER_SPAN("--------- Stores --------", "L1Hit", 2),
 	.name		= "stores_l1hit",
 	.cmp		= st_l1hit_cmp,
 	.entry		= st_l1hit_entry,
@@ -1366,8 +1400,16 @@ static struct c2c_dimension dim_stores_l1miss = {
 	.width		= 7,
 };
 
+static struct c2c_dimension dim_stores_na = {
+	.header		= HEADER_SPAN_LOW("N/A"),
+	.name		= "stores_na",
+	.cmp		= st_na_cmp,
+	.entry		= st_na_entry,
+	.width		= 7,
+};
+
 static struct c2c_dimension dim_cl_stores_l1hit = {
-	.header		= HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
+	.header		= HEADER_SPAN("------- Store Refs ------", "L1 Hit", 2),
 	.name		= "cl_stores_l1hit",
 	.cmp		= st_l1hit_cmp,
 	.entry		= st_l1hit_entry,
@@ -1382,6 +1424,14 @@ static struct c2c_dimension dim_cl_stores_l1miss = {
 	.width		= 7,
 };
 
+static struct c2c_dimension dim_cl_stores_na = {
+	.header		= HEADER_SPAN_LOW("N/A"),
+	.name		= "cl_stores_na",
+	.cmp		= st_na_cmp,
+	.entry		= st_na_entry,
+	.width		= 7,
+};
+
 static struct c2c_dimension dim_ld_fbhit = {
 	.header		= HEADER_SPAN("----- Core Load Hit -----", "FB", 2),
 	.name		= "ld_fbhit",
@@ -1471,7 +1521,7 @@ static struct c2c_dimension dim_percent_lcl_hitm = {
 };
 
 static struct c2c_dimension dim_percent_stores_l1hit = {
-	.header		= HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
+	.header		= HEADER_SPAN("------- Store Refs ------", "L1 Hit", 2),
 	.name		= "percent_stores_l1hit",
 	.cmp		= percent_stores_l1hit_cmp,
 	.entry		= percent_stores_l1hit_entry,
@@ -1488,6 +1538,15 @@ static struct c2c_dimension dim_percent_stores_l1miss = {
 	.width		= 7,
 };
 
+static struct c2c_dimension dim_percent_stores_na = {
+	.header		= HEADER_SPAN_LOW("N/A"),
+	.name		= "percent_stores_na",
+	.cmp		= percent_stores_na_cmp,
+	.entry		= percent_stores_na_entry,
+	.color		= percent_stores_na_color,
+	.width		= 7,
+};
+
 static struct c2c_dimension dim_dram_lcl = {
 	.header		= HEADER_SPAN("--- Load Dram ----", "Lcl", 1),
 	.name		= "dram_lcl",
@@ -1618,8 +1677,10 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_tot_stores,
 	&dim_stores_l1hit,
 	&dim_stores_l1miss,
+	&dim_stores_na,
 	&dim_cl_stores_l1hit,
 	&dim_cl_stores_l1miss,
+	&dim_cl_stores_na,
 	&dim_ld_fbhit,
 	&dim_ld_l1hit,
 	&dim_ld_l2hit,
@@ -1632,6 +1693,7 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_percent_lcl_hitm,
 	&dim_percent_stores_l1hit,
 	&dim_percent_stores_l1miss,
+	&dim_percent_stores_na,
 	&dim_dram_lcl,
 	&dim_dram_rmt,
 	&dim_pid,
@@ -2149,6 +2211,7 @@ static void print_c2c__display_stats(FILE *out)
 	fprintf(out, "  Store - no mapping                : %10d\n", stats->st_noadrs);
 	fprintf(out, "  Store L1D Hit                     : %10d\n", stats->st_l1hit);
 	fprintf(out, "  Store L1D Miss                    : %10d\n", stats->st_l1miss);
+	fprintf(out, "  Store No available memory level   : %10d\n", stats->st_na);
 	fprintf(out, "  No Page Map Rejects               : %10d\n", stats->nomap);
 	fprintf(out, "  Unable to parse data source       : %10d\n", stats->noparse);
 }
@@ -2171,6 +2234,7 @@ static void print_shared_cacheline_info(FILE *out)
 	fprintf(out, "  Blocked Access on shared lines    : %10d\n", stats->blk_data + stats->blk_addr);
 	fprintf(out, "  Store HITs on shared lines        : %10d\n", stats->store);
 	fprintf(out, "  Store L1D hits on shared lines    : %10d\n", stats->st_l1hit);
+	fprintf(out, "  Store No available memory level   : %10d\n", stats->st_na);
 	fprintf(out, "  Total Merged records              : %10d\n", hitm_cnt + stats->store);
 }
 
@@ -2193,10 +2257,10 @@ static void print_cacheline(struct c2c_hists *c2c_hists,
 		fprintf(out, "\n");
 	}
 
-	fprintf(out, "  -------------------------------------------------------------\n");
+	fprintf(out, "  ----------------------------------------------------------------------\n");
 	__hist_entry__snprintf(he_cl, &hpp, hpp_list);
 	fprintf(out, "%s\n", bf);
-	fprintf(out, "  -------------------------------------------------------------\n");
+	fprintf(out, "  ----------------------------------------------------------------------\n");
 
 	hists__fprintf(&c2c_hists->hists, false, 0, 0, 0, out, false);
 }
@@ -2213,6 +2277,7 @@ static void print_pareto(FILE *out)
 		    "cl_lcl_hitm,"
 		    "cl_stores_l1hit,"
 		    "cl_stores_l1miss,"
+		    "cl_stores_na,"
 		    "dcacheline";
 
 	perf_hpp_list__init(&hpp_list);
@@ -2664,6 +2729,7 @@ static int build_cl_output(char *cl_sort, bool no_source)
 		"percent_lcl_hitm,"
 		"percent_stores_l1hit,"
 		"percent_stores_l1miss,"
+		"percent_stores_na,"
 		"offset,offset_node,dcacheline_count,",
 		add_pid   ? "pid," : "",
 		add_tid   ? "tid," : "",
@@ -2850,7 +2916,7 @@ static int perf_c2c__report(int argc, const char **argv)
 		     "tot_recs,"
 		     "tot_loads,"
 		     "tot_stores,"
-		     "stores_l1hit,stores_l1miss,"
+		     "stores_l1hit,stores_l1miss,stores_na,"
 		     "ld_fbhit,ld_l1hit,ld_l2hit,"
 		     "ld_lclhit,lcl_hitm,"
 		     "ld_rmthit,rmt_hitm,"