perf_counter tools: Standardize color printing

The rule is:

 - high overhead: red
 -  mid overhead: green
 -  low overhead: normal (white/black)

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/builtin-annotate.c

@@ -1085,8 +1085,9 @@ parse_line(FILE *file, struct symbol *sym, uint64_t start, uint64_t len)
 			percent = 100.0 * hits / sym->hist_sum;
 
 		/*
-		 * We color high-overhead entries in red, low-overhead
-		 * entries in green - and keep the middle ground normal:
+		 * We color high-overhead entries in red, mid-overhead
+		 * entries in green - and keep the low overhead places
+		 * normal:
 		 */
 		if (percent >= 5.0)
 			color = PERF_COLOR_RED;

tools/perf/builtin-report.c

@@ -693,13 +693,16 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, uint64_t total_samples)
 		char *color = PERF_COLOR_NORMAL;
 
 		/*
-		 * We color high-overhead entries in red, low-overhead
-		 * entries in green - and keep the middle ground normal:
+		 * We color high-overhead entries in red, mid-overhead
+		 * entries in green - and keep the low overhead places
+		 * normal:
 		 */
-		if (percent >= 5.0)
+		if (percent >= 5.0) {
 			color = PERF_COLOR_RED;
-		if (percent < 0.5)
-			color = PERF_COLOR_GREEN;
+		} else {
+			if (percent >= 0.5)
+				color = PERF_COLOR_GREEN;
+		}
 
 		ret = color_fprintf(fp, color, "   %6.2f%%",
 				(self->count * 100.0) / total_samples);

tools/perf/builtin-top.c

@@ -248,13 +248,16 @@ static void print_sym_table(void)
 					 sum_ksamples));
 
 		/*
-		 * We color high-overhead entries in red, low-overhead
-		 * entries in green - and keep the middle ground normal:
+		 * We color high-overhead entries in red, mid-overhead
+		 * entries in green - and keep the low overhead places
+		 * normal:
 		 */
-		if (pcnt >= 5.0)
+		if (pcnt >= 5.0) {
 			color = PERF_COLOR_RED;
-		if (pcnt < 0.5)
-			color = PERF_COLOR_GREEN;
+		} else {
+			if (pcnt >= 0.5)
+				color = PERF_COLOR_GREEN;
+		}
 
 		if (nr_counters == 1)
 			printf("%20.2f - ", syme->weight);