lkml.org 
[lkml]   [2013]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 08/12] perf annotate: Support event group view for --print-line
Date
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>
---
tools/perf/util/annotate.c | 130 +++++++++++++++++++++++++++++++++------------
tools/perf/util/annotate.h | 1 +
2 files changed, 98 insertions(+), 33 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index ebf2596d7e2e..05e34df5d041 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -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) {
+ size_t sizeof_src_line = sizeof(*src_line) +
+ sizeof(src_line->p) * (src_line->nr_pcnt - 1);
+
while (offset < end) {
+ src_line = (void *)notes->src->lines +
+ (sizeof_src_line * offset);
+
if (*path == NULL)
- *path = src_line[offset].path;
+ *path = src_line->path;

- percent += src_line[offset++].p[0].percent;
+ 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 (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)
+ 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);
+ 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);
}
}
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index bb2e3f998983..68f851e6c685 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -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];
};

--
1.7.11.7


\
 
 \ /
  Last update: 2013-03-05 07:41    [W:0.148 / U:0.252 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site