[PATCH v3 2/8] perf stat: Fix/add parameter names for print_metric

[Ian Rogers <irogers@google.com>]

The print_metric parameter names were rearranged, fix and add comments
in the stat-shadow callers to ensure they are correct.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/stat-shadow.c | 55 ++++++++++++++++++++---------------
 tools/perf/util/stat.h        |  6 ++--
 2 files changed, 36 insertions(+), 25 deletions(-)

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 6227de848083..512890d50b69 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -196,17 +196,21 @@ static void print_ratio(struct perf_stat_config *config,
 			const struct evsel *evsel, int aggr_idx,
 			double numerator, struct perf_stat_output_ctx *out,
 			enum stat_type denominator_type,
-			const double color_ratios[3], const char *unit)
+			const double color_ratios[3], const char *_unit)
 {
 	double denominator = find_stat(evsel, aggr_idx, denominator_type);
+	double ratio = 0;
+	const char *color = NULL;
+	const char *fmt = NULL;
+	const char *unit = NULL;
 
 	if (numerator && denominator) {
-		double ratio = numerator / denominator * 100.0;
-		const char *color = get_ratio_color(color_ratios, ratio);
-
-		out->print_metric(config, out->ctx, color, "%7.2f%%", unit, ratio);
-	} else
-		out->print_metric(config, out->ctx, NULL, NULL, unit, 0);
+		ratio = numerator / denominator * 100.0;
+		color = get_ratio_color(color_ratios, ratio);
+		fmt = "%7.2f%%";
+		unit = _unit;
+	}
+	out->print_metric(config, out->ctx, color, fmt, unit, ratio);
 }
 
 static void print_stalled_cycles_front(struct perf_stat_config *config,
@@ -320,14 +324,15 @@ static void print_instructions(struct perf_stat_config *config,
 				find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_BACK));
 
 	if (cycles) {
-		print_metric(config, ctxp, NULL, "%7.2f ", "insn per cycle",
-			instructions / cycles);
-	} else
-		print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0);
+		print_metric(config, ctxp, /*color=*/NULL, "%7.2f ", "insn per cycle",
+			     instructions / cycles);
+	} else {
+		print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, "insn per cycle", 0);
+	}
 
 	if (max_stalled && instructions) {
 		out->new_line(config, ctxp);
-		print_metric(config, ctxp, NULL, "%7.2f ", "stalled cycles per insn",
+		print_metric(config, ctxp, /*color=*/NULL, "%7.2f ", "stalled cycles per insn",
 			max_stalled / instructions);
 	}
 }
@@ -342,9 +347,10 @@ static void print_cycles(struct perf_stat_config *config,
 	if (cycles && nsecs) {
 		double ratio = cycles / nsecs;
 
-		out->print_metric(config, out->ctx, NULL, "%8.3f", "GHz", ratio);
-	} else
-		out->print_metric(config, out->ctx, NULL, NULL, "GHz", 0);
+		out->print_metric(config, out->ctx, /*color=*/NULL, "%8.3f", "GHz", ratio);
+	} else {
+		out->print_metric(config, out->ctx, /*color=*/NULL, /*fmt=*/NULL, "GHz", 0);
+	}
 }
 
 static void print_nsecs(struct perf_stat_config *config,
@@ -357,10 +363,11 @@ static void print_nsecs(struct perf_stat_config *config,
 	double wall_time = avg_stats(&walltime_nsecs_stats);
 
 	if (wall_time) {
-		print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized",
+		print_metric(config, ctxp, /*color=*/NULL, "%8.3f", "CPUs utilized",
 			nsecs / (wall_time * evsel->scale));
-	} else
-		print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0);
+	} else {
+		print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, "CPUs utilized", 0);
+	}
 }
 
 static int prepare_metric(const struct metric_expr *mexp,
@@ -542,12 +549,12 @@ static void generic_metric(struct perf_stat_config *config,
 					ratio);
 			}
 		} else {
-			print_metric(config, ctxp, color, /*unit=*/NULL,
+			print_metric(config, ctxp, color, /*fmt=*/NULL,
 				     out->force_header ?
 				     (metric_name ?: evsel->name) : "", 0);
 		}
 	} else {
-		print_metric(config, ctxp, color, /*unit=*/NULL,
+		print_metric(config, ctxp, color, /*fmt=*/NULL,
 			     out->force_header ?
 			     (metric_name ?: evsel->name) : "", 0);
 	}
@@ -718,9 +725,11 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
 
 				if (unit != ' ')
 					snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
-				print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio);
-			} else
+				print_metric(config, ctxp, /*color=*/NULL, "%8.3f",
+					     unit_buf, ratio);
+			} else {
 				num = 0;
+			}
 		}
 	}
 
@@ -728,7 +737,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
 						  &num, NULL, out, metric_events);
 
 	if (num == 0)
-		print_metric(config, ctxp, NULL, NULL, NULL, 0);
+		print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, /*unit=*/NULL, 0);
 }
 
 /**
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index fd7a187551bd..a5f3d7d00101 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -155,8 +155,10 @@ extern struct stats walltime_nsecs_stats;
 extern struct rusage_stats ru_stats;
 
 typedef void (*print_metric_t)(struct perf_stat_config *config,
-			       void *ctx, const char *color, const char *unit,
-			       const char *fmt, double val);
+			       void *ctx, const char *color,
+			       const char *fmt,
+			       const char *unit,
+			       double val);
 typedef void (*new_line_t)(struct perf_stat_config *config, void *ctx);
 
 /* Used to print the display name of the Default metricgroup for now. */
-- 
2.47.0.105.g07ac214952-goog