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>

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index cc53de3..f5d2a63 100644 (file)
--- 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);