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authorFrederic Weisbecker <fweisbec@gmail.com>2009-07-02 20:14:34 +0200
committerIngo Molnar <mingo@elte.hu>2009-07-02 21:38:37 +0200
commit1e11fd82d247e4e48a1d6c49402214434538d3fd (patch)
tree7ac435b0be559c113987a64126559ea9b41627dc /tools/perf/util
parentc20ab37ef30f4a874cf27e84c12c73e584e6f5cc (diff)
perf_counter tools: Provide helper to print percents color
Among perf annotate, perf report and perf top, we can find the common colored printing of percents according to the following rules: High overhead = > 5%, colored in red Mid overhead = > 0.5%, colored in green Low overhead = < 0.5%, default color Factorize these multiple checks in a single function named percent_color_fprintf() and also provide a get_percent_color() for sites which print percentages and other things at the same time. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1246558475-10624-2-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/color.c27
-rw-r--r--tools/perf/util/color.h5
2 files changed, 32 insertions, 0 deletions
diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c
index 26f82318b86..90a044d1fe7 100644
--- a/tools/perf/util/color.c
+++ b/tools/perf/util/color.c
@@ -242,4 +242,31 @@ int color_fwrite_lines(FILE *fp, const char *color,
return 0;
}
+char *get_percent_color(double percent)
+{
+ char *color = PERF_COLOR_NORMAL;
+
+ /*
+ * We color high-overhead entries in red, mid-overhead
+ * entries in green - and keep the low overhead places
+ * normal:
+ */
+ if (percent >= MIN_RED)
+ color = PERF_COLOR_RED;
+ else {
+ if (percent > MIN_GREEN)
+ color = PERF_COLOR_GREEN;
+ }
+ return color;
+}
+int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
+{
+ int r;
+ char *color;
+
+ color = get_percent_color(percent);
+ r = color_fprintf(fp, color, fmt, percent);
+
+ return r;
+}
diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h
index 5abfd379582..706cec50bd2 100644
--- a/tools/perf/util/color.h
+++ b/tools/perf/util/color.h
@@ -15,6 +15,9 @@
#define PERF_COLOR_CYAN "\033[36m"
#define PERF_COLOR_BG_RED "\033[41m"
+#define MIN_GREEN 0.5
+#define MIN_RED 5.0
+
/*
* This variable stores the value of color.ui
*/
@@ -32,5 +35,7 @@ void color_parse_mem(const char *value, int len, const char *var, char *dst);
int color_fprintf(FILE *fp, const char *color, const char *fmt, ...);
int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...);
int color_fwrite_lines(FILE *fp, const char *color, size_t count, const char *buf);
+int percent_color_fprintf(FILE *fp, const char *fmt, double percent);
+char *get_percent_color(double percent);
#endif /* COLOR_H */