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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>
This commit is contained in:
Frederic Weisbecker 2009-07-02 20:14:34 +02:00 committed by Ingo Molnar
parent c20ab37ef3
commit 1e11fd82d2
5 changed files with 38 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
tools/perf/builtin-annotate.c
View File

@ -25,10 +25,6 @@
#define SHOW_USER 2
#define SHOW_HV 4
#define MIN_GREEN 0.5
#define MIN_RED 5.0
static char const *input_name = "perf.data";
static char *vmlinux = "vmlinux";
@ -1047,24 +1043,6 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
static char *get_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;
}
static int
parse_line(FILE *file, struct symbol *sym, u64 start, u64 len)
{
@ -1126,7 +1104,7 @@ parse_line(FILE *file, struct symbol *sym, u64 start, u64 len)
} else if (sym->hist_sum)
percent = 100.0 * hits / sym->hist_sum;
color = get_color(percent);
color = get_percent_color(percent);
/*
* Also color the filename and line if needed, with
@ -1262,7 +1240,7 @@ static void print_summary(char *filename)
sym_ext = rb_entry(node, struct sym_ext, node);
percent = sym_ext->percent;
color = get_color(percent);
color = get_percent_color(percent);
path = sym_ext->path;
color_fprintf(stdout, color, " %7.2f %s", percent, path);

21
tools/perf/builtin-report.c
View File

@ -947,25 +947,10 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
if (exclude_other && !self->parent)
return 0;
if (total_samples) {
double percent = self->count * 100.0 / total_samples;
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 >= 5.0) {
color = PERF_COLOR_RED;
} else {
if (percent >= 0.5)
color = PERF_COLOR_GREEN;
}
ret = color_fprintf(fp, color, " %6.2f%%",
if (total_samples)
ret = percent_color_fprintf(fp, " %6.2f%%",
(self->count * 100.0) / total_samples);
} else
else
ret = fprintf(fp, "%12Ld ", self->count);
list_for_each_entry(se, &hist_entry__sort_list, list) {

15
tools/perf/builtin-top.c
View File

@ -239,7 +239,6 @@ static void print_sym_table(void)
for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
struct sym_entry *syme = rb_entry(nd, struct sym_entry, rb_node);
struct symbol *sym = (struct symbol *)(syme + 1);
char *color = PERF_COLOR_NORMAL;
double pcnt;
if (++printed > print_entries || syme->snap_count < count_filter)
@ -248,24 +247,12 @@ static void print_sym_table(void)
pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
sum_ksamples));
/*
* We color high-overhead entries in red, mid-overhead
* entries in green - and keep the low overhead places
* normal:
*/
if (pcnt >= 5.0) {
color = PERF_COLOR_RED;
} else {
if (pcnt >= 0.5)
color = PERF_COLOR_GREEN;
}
if (nr_counters == 1)
printf("%20.2f - ", syme->weight);
else
printf("%9.1f %10ld - ", syme->weight, syme->snap_count);
color_fprintf(stdout, color, "%4.1f%%", pcnt);
percent_color_fprintf(stdout, "%4.1f%%", pcnt);
printf(" - %016llx : %s", sym->start, sym->name);
if (sym->module)
printf("\t[%s]", sym->module->name);

27
tools/perf/util/color.c
View File

@ -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;
}

5
tools/perf/util/color.h
View File

@ -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 */