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perf annotate: Support event group view for --print-line

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Dynamically allocate source_line_percent according to a number of group
members and save nr_pcnt to the struct source_line.  This way we can
handle multiple events in a general manner.

However since the size of struct source_line is not fixed anymore,
iterating whole source_line should care about its size.

  $ perf annotate --group --stdio --print-line

  Sorted summary for file /lib/ld-2.11.1.so
  ----------------------------------------------
     33.33    0.00 /build/buildd/eglibc-2.11.1/elf/rtld.c:381
     33.33    0.00 /build/buildd/eglibc-2.11.1/elf/dynamic-link.h:128
     33.33    0.00 /build/buildd/eglibc-2.11.1/elf/do-rel.h:105
      0.00   75.00 /build/buildd/eglibc-2.11.1/elf/dynamic-link.h:137
      0.00   25.00 /build/buildd/eglibc-2.11.1/elf/dynamic-link.h:187
  ...

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1362462812-30885-9-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-03-05 14:53:28 +09:00 committed by Arnaldo Carvalho de Melo
parent c5a8368ca6
commit 1491c22a5f
2 changed files with 101 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

136
tools/perf/util/annotate.c
View File

@ -607,18 +607,26 @@ static double disasm__calc_percent(struct annotation *notes, int evidx,
s64 offset, s64 end, const char **path)
{
struct source_line *src_line = notes->src->lines;
struct sym_hist *h = annotation__histogram(notes, evidx);
unsigned int hits = 0;
double percent = 0.0;
if (src_line) {
while (offset < end) {
if (*path == NULL)
*path = src_line[offset].path;
size_t sizeof_src_line = sizeof(*src_line) +
sizeof(src_line->p) * (src_line->nr_pcnt - 1);
percent += src_line[offset++].p[0].percent;
while (offset < end) {
src_line = (void *)notes->src->lines +
(sizeof_src_line * offset);
if (*path == NULL)
*path = src_line->path;
percent += src_line->p[evidx].percent;
offset++;
}
} else {
struct sym_hist *h = annotation__histogram(notes, evidx);
unsigned int hits = 0;
while (offset < end)
hits += h->addr[offset++];
@ -658,9 +666,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
for (i = 0; i < nr_percent; i++) {
percent = disasm__calc_percent(notes,
evsel->idx + i, offset,
next ? next->offset : (s64) len,
&path);
notes->src->lines ? i : evsel->idx + i,
offset,
next ? next->offset : (s64) len,
&path);
ppercents[i] = percent;
if (percent > max_percent)
@ -921,7 +930,7 @@ static void insert_source_line(struct rb_root *root, struct source_line *src_lin
struct source_line *iter;
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
int ret;
int i, ret;
while (*p != NULL) {
parent = *p;
@ -929,7 +938,8 @@ static void insert_source_line(struct rb_root *root, struct source_line *src_lin
ret = strcmp(iter->path, src_line->path);
if (ret == 0) {
iter->p[0].percent_sum += src_line->p[0].percent;
for (i = 0; i < src_line->nr_pcnt; i++)
iter->p[i].percent_sum += src_line->p[i].percent;
return;
}
@ -939,12 +949,26 @@ static void insert_source_line(struct rb_root *root, struct source_line *src_lin
p = &(*p)->rb_right;
}
src_line->p[0].percent_sum = src_line->p[0].percent;
for (i = 0; i < src_line->nr_pcnt; i++)
src_line->p[i].percent_sum = src_line->p[i].percent;
rb_link_node(&src_line->node, parent, p);
rb_insert_color(&src_line->node, root);
}
static int cmp_source_line(struct source_line *a, struct source_line *b)
{
int i;
for (i = 0; i < a->nr_pcnt; i++) {
if (a->p[i].percent_sum == b->p[i].percent_sum)
continue;
return a->p[i].percent_sum > b->p[i].percent_sum;
}
return 0;
}
static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
{
struct source_line *iter;
@ -955,7 +979,7 @@ static void __resort_source_line(struct rb_root *root, struct source_line *src_l
parent = *p;
iter = rb_entry(parent, struct source_line, node);
if (src_line->p[0].percent_sum > iter->p[0].percent_sum)
if (cmp_source_line(src_line, iter))
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
@ -987,12 +1011,18 @@ static void symbol__free_source_line(struct symbol *sym, int len)
{
struct annotation *notes = symbol__annotation(sym);
struct source_line *src_line = notes->src->lines;
size_t sizeof_src_line;
int i;
for (i = 0; i < len; i++)
free(src_line[i].path);
sizeof_src_line = sizeof(*src_line) +
(sizeof(src_line->p) * (src_line->nr_pcnt - 1));
free(src_line);
for (i = 0; i < len; i++) {
free(src_line->path);
src_line = (void *)src_line + sizeof_src_line;
}
free(notes->src->lines);
notes->src->lines = NULL;
}
@ -1003,17 +1033,30 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map,
const char *filename)
{
u64 start;
int i;
int i, k;
int evidx = evsel->idx;
char cmd[PATH_MAX * 2];
struct source_line *src_line;
struct annotation *notes = symbol__annotation(sym);
struct sym_hist *h = annotation__histogram(notes, evsel->idx);
struct sym_hist *h = annotation__histogram(notes, evidx);
struct rb_root tmp_root = RB_ROOT;
int nr_pcnt = 1;
u64 h_sum = h->sum;
size_t sizeof_src_line = sizeof(struct source_line);
if (!h->sum)
if (perf_evsel__is_group_event(evsel)) {
for (i = 1; i < evsel->nr_members; i++) {
h = annotation__histogram(notes, evidx + i);
h_sum += h->sum;
}
nr_pcnt = evsel->nr_members;
sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->p);
}
if (!h_sum)
return 0;
src_line = notes->src->lines = calloc(len, sizeof(struct source_line));
src_line = notes->src->lines = calloc(len, sizeof_src_line);
if (!notes->src->lines)
return -1;
@ -1024,29 +1067,41 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map,
size_t line_len;
u64 offset;
FILE *fp;
double percent_max = 0.0;
src_line[i].p[0].percent = 100.0 * h->addr[i] / h->sum;
if (src_line[i].p[0].percent <= 0.5)
continue;
src_line->nr_pcnt = nr_pcnt;
for (k = 0; k < nr_pcnt; k++) {
h = annotation__histogram(notes, evidx + k);
src_line->p[k].percent = 100.0 * h->addr[i] / h->sum;
if (src_line->p[k].percent > percent_max)
percent_max = src_line->p[k].percent;
}
if (percent_max <= 0.5)
goto next;
offset = start + i;
sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);
fp = popen(cmd, "r");
if (!fp)
continue;
goto next;
if (getline(&path, &line_len, fp) < 0 || !line_len)
goto next;
goto next_close;
src_line[i].path = malloc(sizeof(char) * line_len + 1);
if (!src_line[i].path)
goto next;
src_line->path = malloc(sizeof(char) * line_len + 1);
if (!src_line->path)
goto next_close;
strcpy(src_line[i].path, path);
insert_source_line(&tmp_root, &src_line[i]);
strcpy(src_line->path, path);
insert_source_line(&tmp_root, src_line);
next:
next_close:
pclose(fp);
next:
src_line = (void *)src_line + sizeof_src_line;
}
resort_source_line(root, &tmp_root);
@ -1068,16 +1123,25 @@ static void print_summary(struct rb_root *root, const char *filename)
node = rb_first(root);
while (node) {
double percent;
double percent, percent_max = 0.0;
const char *color;
char *path;
int i;
src_line = rb_entry(node, struct source_line, node);
percent = src_line->p[0].percent_sum;
color = get_percent_color(percent);
path = src_line->path;
for (i = 0; i < src_line->nr_pcnt; i++) {
percent = src_line->p[i].percent_sum;
color = get_percent_color(percent);
color_fprintf(stdout, color, " %7.2f", percent);
if (percent > percent_max)
percent_max = percent;
}
path = src_line->path;
color = get_percent_color(percent_max);
color_fprintf(stdout, color, " %s", path);
color_fprintf(stdout, color, " %7.2f %s", percent, path);
node = rb_next(node);
}
}

1
tools/perf/util/annotate.h
View File

@ -82,6 +82,7 @@ struct source_line_percent {
struct source_line {
struct rb_node node;
char *path;
int nr_pcnt;
struct source_line_percent p[1];
};