Commit 0c4a5bce authored by Martin Liška's avatar Martin Liška Committed by Arnaldo Carvalho de Melo
Browse files

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



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: default avatarMartin 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a5499b37
......@@ -329,6 +329,8 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
"objdump binary to use for disassembly and annotations"),
OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
"Show event group information together"),
OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
"Show a column with the sum of periods"),
OPT_END()
};
int ret = hists__init();
......
......@@ -11,16 +11,21 @@
#include "../../util/evsel.h"
#include <pthread.h>
struct disasm_line_samples {
double percent;
u64 nr;
};
struct browser_disasm_line {
struct rb_node rb_node;
u32 idx;
int idx_asm;
int jump_sources;
struct rb_node rb_node;
u32 idx;
int idx_asm;
int jump_sources;
/*
* actual length of this array is saved on the nr_events field
* of the struct annotate_browser
*/
double percent[1];
struct disasm_line_samples samples[1];
};
static struct annotate_browser_opt {
......@@ -28,7 +33,8 @@ static struct annotate_browser_opt {
use_offset,
jump_arrows,
show_linenr,
show_nr_jumps;
show_nr_jumps,
show_total_period;
} annotate_browser__opts = {
.use_offset = true,
.jump_arrows = true,
......@@ -105,15 +111,20 @@ static void annotate_browser__write(struct ui_browser *browser, void *entry, int
char bf[256];
for (i = 0; i < ab->nr_events; i++) {
if (bdl->percent[i] > percent_max)
percent_max = bdl->percent[i];
if (bdl->samples[i].percent > percent_max)
percent_max = bdl->samples[i].percent;
}
if (dl->offset != -1 && percent_max != 0.0) {
for (i = 0; i < ab->nr_events; i++) {
ui_browser__set_percent_color(browser, bdl->percent[i],
ui_browser__set_percent_color(browser,
bdl->samples[i].percent,
current_entry);
slsmg_printf("%6.2f ", bdl->percent[i]);
if (annotate_browser__opts.show_total_period)
slsmg_printf("%6" PRIu64 " ",
bdl->samples[i].nr);
else
slsmg_printf("%6.2f ", bdl->samples[i].percent);
}
} else {
ui_browser__set_percent_color(browser, 0, current_entry);
......@@ -273,9 +284,9 @@ static int disasm__cmp(struct browser_disasm_line *a,
int i;
for (i = 0; i < nr_pcnt; i++) {
if (a->percent[i] == b->percent[i])
if (a->samples[i].percent == b->samples[i].percent)
continue;
return a->percent[i] < b->percent[i];
return a->samples[i].percent < b->samples[i].percent;
}
return 0;
}
......@@ -366,14 +377,17 @@ static void annotate_browser__calc_percent(struct annotate_browser *browser,
next = disasm__get_next_ip_line(&notes->src->source, pos);
for (i = 0; i < browser->nr_events; i++) {
bpos->percent[i] = disasm__calc_percent(notes,
u64 nr_samples;
bpos->samples[i].percent = disasm__calc_percent(notes,
evsel->idx + i,
pos->offset,
next ? next->offset : len,
&path);
&path, &nr_samples);
bpos->samples[i].nr = nr_samples;
if (max_percent < bpos->percent[i])
max_percent = bpos->percent[i];
if (max_percent < bpos->samples[i].percent)
max_percent = bpos->samples[i].percent;
}
if (max_percent < 0.01) {
......@@ -737,6 +751,7 @@ static int annotate_browser__run(struct annotate_browser *browser,
"n Search next string\n"
"o Toggle disassembler output/simplified view\n"
"s Toggle source code view\n"
"t Toggle total period view\n"
"/ Search string\n"
"k Toggle line numbers\n"
"r Run available scripts\n"
......@@ -812,6 +827,11 @@ show_sup_ins:
ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
}
continue;
case 't':
annotate_browser__opts.show_total_period =
!annotate_browser__opts.show_total_period;
annotate_browser__update_addr_width(browser);
continue;
case K_LEFT:
case K_ESC:
case 'q':
......@@ -832,6 +852,10 @@ out:
int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
{
/* Set default value for show_total_period. */
annotate_browser__opts.show_total_period =
symbol_conf.show_total_period;
return symbol__tui_annotate(ms->sym, ms->map, evsel, hbt);
}
......@@ -929,7 +953,8 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
if (perf_evsel__is_group_event(evsel)) {
nr_pcnt = evsel->nr_members;
sizeof_bdl += sizeof(double) * (nr_pcnt - 1);
sizeof_bdl += sizeof(struct disasm_line_samples) *
(nr_pcnt - 1);
}
if (symbol__annotate(sym, map, sizeof_bdl) < 0) {
......@@ -1006,6 +1031,7 @@ static struct annotate_config {
ANNOTATE_CFG(show_linenr),
ANNOTATE_CFG(show_nr_jumps),
ANNOTATE_CFG(use_offset),
ANNOTATE_CFG(show_total_period),
};
#undef ANNOTATE_CFG
......
......@@ -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 {
......
......@@ -72,7 +72,7 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
size_t disasm__fprintf(struct list_head *head, FILE *fp);
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 sym_hist {
u64 sum;
......@@ -82,6 +82,7 @@ struct sym_hist {
struct source_line_percent {
double percent;
double percent_sum;
double samples;
};
struct source_line {
......
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