perf stat: Introduce get_ratio_color() helper

The get_ratio_color() returns appropriate color string based on @ratio.
It helps reducing code duplication.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1325000151-4463-2-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 35 insertions, 56 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index cc53de335ced..f5d2a63eba66 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -578,6 +578,33 @@ static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
                         avg / avg_stats(&walltime_nsecs_stats));
 }
 
+/* used for get_ratio_color() */
+enum grc_type {
+        GRC_STALLED_CYCLES_FE,
+        GRC_STALLED_CYCLES_BE,
+        GRC_CACHE_MISSES,
+        GRC_MAX_NR
+};
+
+static const char *get_ratio_color(enum grc_type type, double ratio)
+{
+        static const double grc_table[GRC_MAX_NR][3] = {
+                [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
+                [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
+                [GRC_CACHE_MISSES]      = { 20.0, 10.0, 5.0 },
+        };
+        const char *color = PERF_COLOR_NORMAL;
+
+        if (ratio > grc_table[type][0])
+                color = PERF_COLOR_RED;
+        else if (ratio > grc_table[type][1])
+                color = PERF_COLOR_MAGENTA;
+        else if (ratio > grc_table[type][2])
+                color = PERF_COLOR_YELLOW;
+
+        return color;
+}
+
 static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
 {
         double total, ratio = 0.0;
@@ -588,13 +615,7 @@ static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __us
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 50.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 30.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -611,13 +632,7 @@ static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __use
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 75.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 50.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 20.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -634,13 +649,7 @@ static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 20.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 5.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -657,13 +666,7 @@ static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, dou
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 20.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 5.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -680,13 +683,7 @@ static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, dou
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 20.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 5.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -703,13 +700,7 @@ static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, do
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 20.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 5.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -726,13 +717,7 @@ static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, do
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 20.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 5.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);
@@ -749,13 +734,7 @@ static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, doub
         if (total)
                 ratio = avg / total * 100.0;
 
-        color = PERF_COLOR_NORMAL;
-        if (ratio > 20.0)
-                color = PERF_COLOR_RED;
-        else if (ratio > 10.0)
-                color = PERF_COLOR_MAGENTA;
-        else if (ratio > 5.0)
-                color = PERF_COLOR_YELLOW;
+        color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 
         fprintf(output, " #  ");
         color_fprintf(output, color, "%6.2f%%", ratio);