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Subject[PATCH 06/12] perf evsel: Introduce perf_evsel__is_group_event() helper
Date
From: Namhyung Kim <namhyung.kim@lge.com>

The perf_evsel__is_group_event function is for checking whether given
evsel needs event group view support or not. Please note that it's
different to the existing perf_evsel__is_group_leader() which checks
only the given evsel is a leader or a standalone (i.e. non-group)
event regardless of event group feature.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/builtin-report.c | 2 +-
tools/perf/ui/browsers/hists.c | 4 ++--
tools/perf/ui/gtk/hists.c | 7 ++-----
tools/perf/ui/hist.c | 7 ++-----
tools/perf/util/annotate.c | 9 +++------
tools/perf/util/evsel.h | 24 ++++++++++++++++++++++++
6 files changed, 34 insertions(+), 19 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 96b5a7fee4bb..3f4a79ba5ada 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -314,7 +314,7 @@ static size_t hists__fprintf_nr_sample_events(struct hists *self,
char buf[512];
size_t size = sizeof(buf);

- if (symbol_conf.event_group && evsel->nr_members > 1) {
+ if (perf_evsel__is_group_event(evsel)) {
struct perf_evsel *pos;

perf_evsel__group_desc(evsel, buf, size);
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 0e125e1543dc..a5843fd6ab51 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1193,7 +1193,7 @@ static int hists__browser_title(struct hists *hists, char *bf, size_t size,
char buf[512];
size_t buflen = sizeof(buf);

- if (symbol_conf.event_group && evsel->nr_members > 1) {
+ if (perf_evsel__is_group_event(evsel)) {
struct perf_evsel *pos;

perf_evsel__group_desc(evsel, buf, buflen);
@@ -1709,7 +1709,7 @@ static void perf_evsel_menu__write(struct ui_browser *browser,
ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
HE_COLORSET_NORMAL);

- if (symbol_conf.event_group && evsel->nr_members > 1) {
+ if (perf_evsel__is_group_event(evsel)) {
struct perf_evsel *pos;

ev_name = perf_evsel__group_name(evsel);
diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 1e764a8ad259..6f259b3d14e2 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -32,21 +32,18 @@ static int __hpp__color_fmt(struct perf_hpp *hpp, struct hist_entry *he,
int ret;
double percent = 0.0;
struct hists *hists = he->hists;
+ struct perf_evsel *evsel = hists_to_evsel(hists);

if (hists->stats.total_period)
percent = 100.0 * get_field(he) / hists->stats.total_period;

ret = __percent_color_snprintf(hpp->buf, hpp->size, percent);

- if (symbol_conf.event_group) {
+ if (perf_evsel__is_group_event(evsel)) {
int prev_idx, idx_delta;
- struct perf_evsel *evsel = hists_to_evsel(hists);
struct hist_entry *pair;
int nr_members = evsel->nr_members;

- if (nr_members <= 1)
- return ret;
-
prev_idx = perf_evsel__group_idx(evsel);

list_for_each_entry(pair, &he->pairs.head, pairs.node) {
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index d671e63aa351..4bf91b09d62d 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -16,6 +16,7 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
{
int ret;
struct hists *hists = he->hists;
+ struct perf_evsel *evsel = hists_to_evsel(hists);

if (fmt_percent) {
double percent = 0.0;
@@ -28,15 +29,11 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
} else
ret = print_fn(hpp->buf, hpp->size, fmt, get_field(he));

- if (symbol_conf.event_group) {
+ if (perf_evsel__is_group_event(evsel)) {
int prev_idx, idx_delta;
- struct perf_evsel *evsel = hists_to_evsel(hists);
struct hist_entry *pair;
int nr_members = evsel->nr_members;

- if (nr_members <= 1)
- return ret;
-
prev_idx = perf_evsel__group_idx(evsel);

list_for_each_entry(pair, &he->pairs.head, pairs.node) {
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 0955cff5b0ef..f080cc40f00b 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -649,9 +649,7 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st

next = disasm__get_next_ip_line(&notes->src->source, dl);

- if (symbol_conf.event_group &&
- perf_evsel__is_group_leader(evsel) &&
- evsel->nr_members > 1) {
+ if (perf_evsel__is_group_event(evsel)) {
nr_percent = evsel->nr_members;
ppercents = calloc(nr_percent, sizeof(double));
if (ppercents == NULL)
@@ -721,8 +719,7 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
if (queue)
return -1;

- if (symbol_conf.event_group &&
- perf_evsel__is_group_leader(evsel))
+ if (perf_evsel__is_group_event(evsel))
width *= evsel->nr_members;

if (!*dl->line)
@@ -1126,7 +1123,7 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
len = symbol__size(sym);
namelen = strlen(d_filename);

- if (symbol_conf.event_group && perf_evsel__is_group_leader(evsel))
+ if (perf_evsel__is_group_event(evsel))
width *= evsel->nr_members;

printf(" %-*.*s| Source code & Disassembly of %s\n",
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 52021c3087df..bf758e53c929 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -9,6 +9,7 @@
#include "xyarray.h"
#include "cgroup.h"
#include "hist.h"
+#include "symbol.h"

struct perf_counts_values {
union {
@@ -246,11 +247,34 @@ static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
return list_entry(evsel->node.next, struct perf_evsel, node);
}

+/**
+ * perf_evsel__is_group_leader - Return whether given evsel is a leader event
+ *
+ * @evsel - evsel selector to be tested
+ *
+ * Return %true if @evsel is a group leader or a stand-alone event
+ */
static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
{
return evsel->leader == evsel;
}

+/**
+ * perf_evsel__is_group_event - Return whether given evsel is a group event
+ *
+ * @evsel - evsel selector to be tested
+ *
+ * Return %true iff event group view is enabled and @evsel is a actual group
+ * leader which has other members in the group
+ */
+static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
+{
+ if (!symbol_conf.event_group)
+ return false;
+
+ return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
+}
+
struct perf_attr_details {
bool freq;
bool verbose;
--
1.7.11.7


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