From: Namhyung Kim <namhyung....@lge.com>

Show group members' overhead also when showing the leader's if event
group is enabled.  Use macro for defining hpp functions which looks
almost identical.

Thanks to Arnaldo for suggesting a better way to print group members
without allocating temporary array.

Cc: Jiri Olsa <jo...@redhat.com>
Cc: Stephane Eranian <eran...@google.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
 tools/perf/ui/hist.c       | 311 +++++++++++++++++++++++----------------------
 tools/perf/ui/stdio/hist.c |   2 +
 2 files changed, 164 insertions(+), 149 deletions(-)

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 1889c12ca81f..ec14335a9713 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -3,151 +3,190 @@
 #include "../util/hist.h"
 #include "../util/util.h"
 #include "../util/sort.h"
-
+#include "../util/evsel.h"
 
 /* hist period print (hpp) functions */
-static int hpp__header_overhead(struct perf_hpp *hpp)
-{
-       return scnprintf(hpp->buf, hpp->size, "Overhead");
-}
 
-static int hpp__width_overhead(struct perf_hpp *hpp __maybe_unused)
-{
-       return 8;
-}
+typedef int (*hpp_snprint_fn)(char *buf, size_t size, const char *fmt, ...);
 
-static int hpp__color_overhead(struct perf_hpp *hpp, struct hist_entry *he)
+static int __hpp__percent_fmt(struct perf_hpp *hpp, struct hist_entry *he,
+                             u64 (*get_field)(struct hist_entry *),
+                             const char *fmt, hpp_snprint_fn print_fn)
 {
+       int ret;
+       double percent = 0.0;
        struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period / hists->stats.total_period;
 
-       return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
-}
+       if (hists->stats.total_period)
+               percent = 100.0 * get_field(he) / hists->stats.total_period;
 
-static int hpp__entry_overhead(struct perf_hpp *hpp, struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period / hists->stats.total_period;
-       const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%%";
+       ret = print_fn(hpp->buf, hpp->size, fmt, percent);
 
-       return scnprintf(hpp->buf, hpp->size, fmt, percent);
-}
+       if (symbol_conf.event_group) {
+               int prev_idx, idx_delta, i;
+               struct perf_evsel *evsel = hists_to_evsel(hists);
+               struct hist_entry *pair;
+               int nr_members = evsel->nr_members;
 
-static int hpp__header_overhead_sys(struct perf_hpp *hpp)
-{
-       const char *fmt = symbol_conf.field_sep ? "%s" : "%7s";
+               if (nr_members <= 1)
+                       return ret;
 
-       return scnprintf(hpp->buf, hpp->size, fmt, "sys");
-}
+               prev_idx = perf_evsel__group_idx(evsel);
 
-static int hpp__width_overhead_sys(struct perf_hpp *hpp __maybe_unused)
-{
-       return 7;
-}
+               list_for_each_entry(pair, &he->pairs.head, pairs.node) {
+                       u64 period = get_field(pair);
+                       u64 total = pair->hists->stats.total_period;
 
-static int hpp__color_overhead_sys(struct perf_hpp *hpp, struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_sys / 
hists->stats.total_period;
+                       if (!total)
+                               continue;
 
-       return percent_color_snprintf(hpp->buf, hpp->size, "%6.2f%%", percent);
-}
+                       evsel = hists_to_evsel(pair->hists);
+                       idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
 
-static int hpp__entry_overhead_sys(struct perf_hpp *hpp, struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_sys / 
hists->stats.total_period;
-       const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
+                       for (i = 0; i < idx_delta; i++) {
+                               ret += print_fn(hpp->buf + ret, hpp->size - ret,
+                                               fmt, 0.0);
+                       }
 
-       return scnprintf(hpp->buf, hpp->size, fmt, percent);
-}
+                       ret += print_fn(hpp->buf + ret, hpp->size - ret,
+                                       fmt, 100.0 * period / total);
 
-static int hpp__header_overhead_us(struct perf_hpp *hpp)
-{
-       const char *fmt = symbol_conf.field_sep ? "%s" : "%7s";
+                       prev_idx += 1 + idx_delta;
+               }
 
-       return scnprintf(hpp->buf, hpp->size, fmt, "user");
-}
+               idx_delta = nr_members - prev_idx - 1;
 
-static int hpp__width_overhead_us(struct perf_hpp *hpp __maybe_unused)
-{
-       return 7;
+               for (i = 0; i < idx_delta; i++) {
+                       ret += print_fn(hpp->buf + ret, hpp->size - ret,
+                                       fmt, 0.0);
+               }
+       }
+       return ret;
 }
 
-static int hpp__color_overhead_us(struct perf_hpp *hpp, struct hist_entry *he)
+static int __hpp__raw_fmt(struct perf_hpp *hpp, struct hist_entry *he,
+                         u64 (*get_field)(struct hist_entry *),
+                         const char *fmt, hpp_snprint_fn print_fn)
 {
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_us / hists->stats.total_period;
-
-       return percent_color_snprintf(hpp->buf, hpp->size, "%6.2f%%", percent);
-}
+       int ret;
+       ret = print_fn(hpp->buf, hpp->size, fmt, get_field(he));
 
-static int hpp__entry_overhead_us(struct perf_hpp *hpp, struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_us / hists->stats.total_period;
-       const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
+       if (symbol_conf.event_group) {
+               int prev_idx, idx_delta, i;
+               struct perf_evsel *evsel = hists_to_evsel(he->hists);
+               struct hist_entry *pair;
+               int nr_members = evsel->nr_members;
 
-       return scnprintf(hpp->buf, hpp->size, fmt, percent);
-}
+               if (nr_members <= 1)
+                       return ret;
 
-static int hpp__header_overhead_guest_sys(struct perf_hpp *hpp)
-{
-       return scnprintf(hpp->buf, hpp->size, "guest sys");
-}
+               prev_idx = perf_evsel__group_idx(evsel);
 
-static int hpp__width_overhead_guest_sys(struct perf_hpp *hpp __maybe_unused)
-{
-       return 9;
-}
+               list_for_each_entry(pair, &he->pairs.head, pairs.node) {
+                       evsel = hists_to_evsel(pair->hists);
+                       idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
 
-static int hpp__color_overhead_guest_sys(struct perf_hpp *hpp,
-                                        struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_guest_sys / 
hists->stats.total_period;
+                       for (i = 0; i < idx_delta; i++) {
+                               ret += print_fn(hpp->buf + ret, hpp->size - ret,
+                                               fmt, 0.0);
+                       }
 
-       return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%% ", 
percent);
-}
+                       ret += print_fn(hpp->buf + ret, hpp->size - ret,
+                                       fmt, get_field(pair));
 
-static int hpp__entry_overhead_guest_sys(struct perf_hpp *hpp,
-                                        struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_guest_sys / 
hists->stats.total_period;
-       const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%% ";
-
-       return scnprintf(hpp->buf, hpp->size, fmt, percent);
-}
+                       prev_idx += 1 + idx_delta;
+               }
 
-static int hpp__header_overhead_guest_us(struct perf_hpp *hpp)
-{
-       return scnprintf(hpp->buf, hpp->size, "guest usr");
-}
+               idx_delta = nr_members - prev_idx - 1;
 
-static int hpp__width_overhead_guest_us(struct perf_hpp *hpp __maybe_unused)
-{
-       return 9;
+               for (i = 0; i < idx_delta; i++) {
+                       ret += print_fn(hpp->buf + ret, hpp->size - ret,
+                                       fmt, 0.0);
+               }
+       }
+       return ret;
 }
 
-static int hpp__color_overhead_guest_us(struct perf_hpp *hpp,
-                                       struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_guest_us / 
hists->stats.total_period;
-
-       return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%% ", 
percent);
-}
 
-static int hpp__entry_overhead_guest_us(struct perf_hpp *hpp,
-                                       struct hist_entry *he)
-{
-       struct hists *hists = he->hists;
-       double percent = 100.0 * he->stat.period_guest_us / 
hists->stats.total_period;
-       const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%% ";
+#define __HPP_HEADER_FN(_type, _str, _min_width, _unit_width)          \
+static int hpp__header_##_type(struct perf_hpp *hpp)                   \
+{                                                                      \
+       int len = _min_width;                                           \
+                                                                       \
+       if (symbol_conf.event_group) {                                  \
+               struct perf_evsel *evsel = hpp->ptr;                    \
+                                                                       \
+               len = max(len, evsel->nr_members * _unit_width);        \
+       }                                                               \
+       return scnprintf(hpp->buf, hpp->size, "%*s", len, _str);        \
+}
+
+#define __HPP_WIDTH_FN(_type, _min_width, _unit_width)                         
\
+static int hpp__width_##_type(struct perf_hpp *hpp)                    \
+{                                                                      \
+       int len = _min_width;                                           \
+                                                                       \
+       if (symbol_conf.event_group) {                                  \
+               struct perf_evsel *evsel = hpp->ptr;                    \
+                                                                       \
+               len = max(len, evsel->nr_members * _unit_width);        \
+       }                                                               \
+       return len;                                                     \
+}
+
+#define __HPP_COLOR_PERCENT_FN(_type, _field)                                  
\
+static u64 he_get_##_field(struct hist_entry *he)                              
\
+{                                                                              
\
+       return he->stat._field;                                                 
\
+}                                                                              
\
+                                                                               
\
+static int hpp__color_##_type(struct perf_hpp *hpp, struct hist_entry *he)     
\
+{                                                                              
\
+       return __hpp__percent_fmt(hpp, he, he_get_##_field, " %6.2f%%",         
\
+                                 (hpp_snprint_fn)percent_color_snprintf);      
\
+}
+
+#define __HPP_ENTRY_PERCENT_FN(_type, _field)                                  
\
+static int hpp__entry_##_type(struct perf_hpp *hpp, struct hist_entry *he)     
\
+{                                                                              
\
+       const char *fmt = symbol_conf.field_sep ? " %.2f" : " %6.2f%%";         
\
+       return __hpp__percent_fmt(hpp, he, he_get_##_field, fmt,                
\
+                                 scnprintf);                                   
\
+}
+
+#define __HPP_ENTRY_RAW_FN(_type, _field)                                      
\
+static u64 he_get_raw_##_field(struct hist_entry *he)                          
\
+{                                                                              
\
+       return he->stat._field;                                                 
\
+}                                                                              
\
+                                                                               
\
+static int hpp__entry_##_type(struct perf_hpp *hpp, struct hist_entry *he)     
\
+{                                                                              
\
+       const char *fmt = symbol_conf.field_sep ? " %"PRIu64 : " %11"PRIu64;    
\
+       return __hpp__raw_fmt(hpp, he, he_get_raw_##_field, fmt, scnprintf);    
\
+}
+
+#define HPP_PERCENT_FNS(_type, _str, _field, _min_width, _unit_width)  \
+__HPP_HEADER_FN(_type, _str, _min_width, _unit_width)                  \
+__HPP_WIDTH_FN(_type, _min_width, _unit_width)                         \
+__HPP_COLOR_PERCENT_FN(_type, _field)                                  \
+__HPP_ENTRY_PERCENT_FN(_type, _field)
+
+#define HPP_RAW_FNS(_type, _str, _field, _min_width, _unit_width)      \
+__HPP_HEADER_FN(_type, _str, _min_width, _unit_width)                  \
+__HPP_WIDTH_FN(_type, _min_width, _unit_width)                         \
+__HPP_ENTRY_RAW_FN(_type, _field)
+
+
+HPP_PERCENT_FNS(overhead, "Overhead", period, 8, 8)
+HPP_PERCENT_FNS(overhead_sys, "sys", period_sys, 8, 8)
+HPP_PERCENT_FNS(overhead_us, "usr", period_us, 8, 8)
+HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys, 9, 8)
+HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us, 9, 8)
+
+HPP_RAW_FNS(samples, "Samples", nr_events, 12, 12)
+HPP_RAW_FNS(period, "Period", period, 12, 12)
 
-       return scnprintf(hpp->buf, hpp->size, fmt, percent);
-}
 
 static int hpp__header_baseline(struct perf_hpp *hpp)
 {
@@ -179,7 +218,7 @@ static int hpp__color_baseline(struct perf_hpp *hpp, struct 
hist_entry *he)
 {
        double percent = baseline_percent(he);
 
-       if (hist_entry__has_pairs(he))
+       if (hist_entry__has_pairs(he) || symbol_conf.field_sep)
                return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", 
percent);
        else
                return scnprintf(hpp->buf, hpp->size, "        ");
@@ -196,44 +235,6 @@ static int hpp__entry_baseline(struct perf_hpp *hpp, 
struct hist_entry *he)
                return scnprintf(hpp->buf, hpp->size, "            ");
 }
 
-static int hpp__header_samples(struct perf_hpp *hpp)
-{
-       const char *fmt = symbol_conf.field_sep ? "%s" : "%11s";
-
-       return scnprintf(hpp->buf, hpp->size, fmt, "Samples");
-}
-
-static int hpp__width_samples(struct perf_hpp *hpp __maybe_unused)
-{
-       return 11;
-}
-
-static int hpp__entry_samples(struct perf_hpp *hpp, struct hist_entry *he)
-{
-       const char *fmt = symbol_conf.field_sep ? "%" PRIu64 : "%11" PRIu64;
-
-       return scnprintf(hpp->buf, hpp->size, fmt, he->stat.nr_events);
-}
-
-static int hpp__header_period(struct perf_hpp *hpp)
-{
-       const char *fmt = symbol_conf.field_sep ? "%s" : "%12s";
-
-       return scnprintf(hpp->buf, hpp->size, fmt, "Period");
-}
-
-static int hpp__width_period(struct perf_hpp *hpp __maybe_unused)
-{
-       return 12;
-}
-
-static int hpp__entry_period(struct perf_hpp *hpp, struct hist_entry *he)
-{
-       const char *fmt = symbol_conf.field_sep ? "%" PRIu64 : "%12" PRIu64;
-
-       return scnprintf(hpp->buf, hpp->size, fmt, he->stat.period);
-}
-
 static int hpp__header_period_baseline(struct perf_hpp *hpp)
 {
        const char *fmt = symbol_conf.field_sep ? "%s" : "%12s";
@@ -254,6 +255,7 @@ static int hpp__entry_period_baseline(struct perf_hpp *hpp, 
struct hist_entry *h
 
        return scnprintf(hpp->buf, hpp->size, fmt, period);
 }
+
 static int hpp__header_delta(struct perf_hpp *hpp)
 {
        const char *fmt = symbol_conf.field_sep ? "%s" : "%7s";
@@ -408,9 +410,20 @@ struct perf_hpp_fmt perf_hpp__format[] = {
 
 LIST_HEAD(perf_hpp__list);
 
+
 #undef HPP__COLOR_PRINT_FNS
 #undef HPP__PRINT_FNS
 
+#undef HPP_PERCENT_FNS
+#undef HPP_RAW_FNS
+
+#undef __HPP_HEADER_FN
+#undef __HPP_WIDTH_FN
+#undef __HPP_COLOR_PERCENT_FN
+#undef __HPP_ENTRY_PERCENT_FN
+#undef __HPP_ENTRY_RAW_FN
+
+
 void perf_hpp__init(void)
 {
        if (symbol_conf.show_cpu_utilization) {
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index f9798298e3e0..ff1f60cf442e 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -3,6 +3,7 @@
 #include "../../util/util.h"
 #include "../../util/hist.h"
 #include "../../util/sort.h"
+#include "../../util/evsel.h"
 
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
@@ -347,6 +348,7 @@ size_t hists__fprintf(struct hists *hists, bool 
show_header, int max_rows,
        struct perf_hpp dummy_hpp = {
                .buf    = bf,
                .size   = sizeof(bf),
+               .ptr    = hists_to_evsel(hists),
        };
        bool first = true;
 
-- 
1.7.11.7

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