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perf annotate: Display total number of samples with --show-total-period

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To compare two records on an instruction base, with --show-total-period
option provided, display total number of samples that belong to a line
in assembly language.

New hot key 't' is introduced for 'perf annotate' TUI.

Signed-off-by: Martin Liska <mliska@suse.cz>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/5583E26D.1040407@suse.cz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Martin Liška 2015-06-19 16:10:43 -03:00 • committed by Arnaldo Carvalho de Melo
parent a5499b3719
commit 0c4a5bcea4
4 changed files with 70 additions and 23 deletions
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28
tools/perf/util/annotate.c
View file

@ -654,10 +654,11 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa
}
double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
s64 end, const char **path)
s64 end, const char **path, u64 *nr_samples)
{
struct source_line *src_line = notes->src->lines;
double percent = 0.0;
*nr_samples = 0;
if (src_line) {
size_t sizeof_src_line = sizeof(*src_line) +
@ -671,6 +672,7 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
*path = src_line->path;
percent += src_line->p[evidx].percent;
*nr_samples += src_line->p[evidx].samples;
offset++;
}
} else {
@ -680,8 +682,10 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
while (offset < end)
hits += h->addr[offset++];
if (h->sum)
if (h->sum) {
*nr_samples = hits;
percent = 100.0 * hits / h->sum;
}
}
return percent;
@ -696,8 +700,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
if (dl->offset != -1) {
const char *path = NULL;
u64 nr_samples;
double percent, max_percent = 0.0;
double *ppercents = &percent;
u64 *psamples = &nr_samples;
int i, nr_percent = 1;
const char *color;
struct annotation *notes = symbol__annotation(sym);
@ -710,8 +716,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
if (perf_evsel__is_group_event(evsel)) {
nr_percent = evsel->nr_members;
ppercents = calloc(nr_percent, sizeof(double));
if (ppercents == NULL)
psamples = calloc(nr_percent, sizeof(u64));
if (ppercents == NULL || psamples == NULL) {
return -1;
}
}
for (i = 0; i < nr_percent; i++) {
@ -719,9 +727,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
notes->src->lines ? i : evsel->idx + i,
offset,
next ? next->offset : (s64) len,
&path);
&path, &nr_samples);
ppercents[i] = percent;
psamples[i] = nr_samples;
if (percent > max_percent)
max_percent = percent;
}
@ -759,8 +768,14 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
for (i = 0; i < nr_percent; i++) {
percent = ppercents[i];
nr_samples = psamples[i];
color = get_percent_color(percent);
color_fprintf(stdout, color, " %7.2f", percent);
if (symbol_conf.show_total_period)
color_fprintf(stdout, color, " %7" PRIu64,
nr_samples);
else
color_fprintf(stdout, color, " %7.2f", percent);
}
printf(" : ");
@ -770,6 +785,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
if (ppercents != &percent)
free(ppercents);
if (psamples != &nr_samples)
free(psamples);
} else if (max_lines && printed >= max_lines)
return 1;
else {