perf c2c: Rename dimension from 'percent_hitm' to 'percent_costly_snoop'

Use more general naming for the main sort dimension, this can allow us
not to sort only on HITM snoop type, so it can be extended to support
other costly snooping operations.  So rename the dimension to the prefix
'percent_costly_".
Reviewed-by: Ali Saidi <alisaidi@amazon.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Ali Saidi <alisaidi@amazon.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Like Xu <likexu@tencent.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Timothy Hayes <timothy.hayes@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220811062451.435810-11-leo.yan@linaro.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-c2c.c

@@ -798,7 +798,7 @@ percent_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	return hpp_color_scnprintf(hpp, "%*.2f%%", width - 1, per);
 }
 
-static double percent_hitm(struct c2c_hist_entry *c2c_he)
+static double percent_costly_snoop(struct c2c_hist_entry *c2c_he)
 {
 	struct c2c_hists *hists;
 	struct c2c_stats *stats;
@@ -838,8 +838,8 @@ static double percent_hitm(struct c2c_hist_entry *c2c_he)
 })
 
 static int
-percent_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
-		   struct hist_entry *he)
+percent_costly_snoop_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);
@@ -847,20 +847,20 @@ percent_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	double per;
 
 	c2c_he = container_of(he, struct c2c_hist_entry, he);
-	per = percent_hitm(c2c_he);
+	per = percent_costly_snoop(c2c_he);
 	return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
 }
 
 static int
-percent_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
-		   struct hist_entry *he)
+percent_costly_snoop_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+			   struct hist_entry *he)
 {
-	return percent_color(fmt, hpp, he, percent_hitm);
+	return percent_color(fmt, hpp, he, percent_costly_snoop);
 }
 
 static int64_t
-percent_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
-		 struct hist_entry *left, struct hist_entry *right)
+percent_costly_snoop_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;
@@ -870,8 +870,8 @@ percent_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
 	c2c_left  = container_of(left, struct c2c_hist_entry, he);
 	c2c_right = container_of(right, struct c2c_hist_entry, he);
 
-	per_left  = percent_hitm(c2c_left);
-	per_right = percent_hitm(c2c_right);
+	per_left  = percent_costly_snoop(c2c_left);
+	per_right = percent_costly_snoop(c2c_right);
 
 	return per_left - per_right;
 }
@@ -1605,17 +1605,17 @@ static struct c2c_dimension dim_tot_loads = {
 	.width		= 7,
 };
 
-static struct c2c_header percent_hitm_header[] = {
+static struct c2c_header percent_costly_snoop_header[] = {
 	[DISPLAY_LCL_HITM] = HEADER_BOTH("Lcl", "Hitm"),
 	[DISPLAY_RMT_HITM] = HEADER_BOTH("Rmt", "Hitm"),
 	[DISPLAY_TOT_HITM] = HEADER_BOTH("Tot", "Hitm"),
 };
 
-static struct c2c_dimension dim_percent_hitm = {
-	.name		= "percent_hitm",
-	.cmp		= percent_hitm_cmp,
-	.entry		= percent_hitm_entry,
-	.color		= percent_hitm_color,
+static struct c2c_dimension dim_percent_costly_snoop = {
+	.name		= "percent_costly_snoop",
+	.cmp		= percent_costly_snoop_cmp,
+	.entry		= percent_costly_snoop_entry,
+	.color		= percent_costly_snoop_color,
 	.width		= 7,
 };
 
@@ -1844,7 +1844,7 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_ld_rmthit,
 	&dim_tot_recs,
 	&dim_tot_loads,
-	&dim_percent_hitm,
+	&dim_percent_costly_snoop,
 	&dim_percent_rmt_hitm,
 	&dim_percent_lcl_hitm,
 	&dim_percent_rmt_peer,
@@ -2748,7 +2748,7 @@ static int ui_quirks(void)
 		nodestr = "CL";
 	}
 
-	dim_percent_hitm.header = percent_hitm_header[c2c.display];
+	dim_percent_costly_snoop.header = percent_costly_snoop_header[c2c.display];
 
 	/* Fix the zero line for dcacheline column. */
 	buf = fill_line("Cacheline", dim_dcacheline.width +
@@ -3076,7 +3076,7 @@ static int perf_c2c__report(int argc, const char **argv)
 		     "dcacheline,"
 		     "dcacheline_node,"
 		     "dcacheline_count,"
-		     "percent_hitm,"
+		     "percent_costly_snoop,"
 		     "tot_hitm,lcl_hitm,rmt_hitm,"
 		     "tot_recs,"
 		     "tot_loads,"