Those functions need evsel to investigate event group and it's passed
via hpp->ptr.  However as it can be missed easily so it's better to
pass it via an argument IMHO.

Cc: Jiri Olsa <jo...@redhat.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
 tools/perf/builtin-diff.c  |  7 ++++---
 tools/perf/ui/gtk/hists.c  |  3 +--
 tools/perf/ui/hist.c       | 37 ++++++++++++++++---------------------
 tools/perf/ui/stdio/hist.c |  5 ++---
 tools/perf/util/hist.h     |  6 ++++--
 5 files changed, 27 insertions(+), 31 deletions(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index a77e31246c00..204fffe22532 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -952,8 +952,8 @@ static int hpp__entry_global(struct perf_hpp_fmt *_fmt, 
struct perf_hpp *hpp,
                                 dfmt->header_width, buf);
 }
 
-static int hpp__header(struct perf_hpp_fmt *fmt,
-                      struct perf_hpp *hpp)
+static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+                      struct perf_evsel *evsel __maybe_unused)
 {
        struct diff_hpp_fmt *dfmt =
                container_of(fmt, struct diff_hpp_fmt, fmt);
@@ -963,7 +963,8 @@ static int hpp__header(struct perf_hpp_fmt *fmt,
 }
 
 static int hpp__width(struct perf_hpp_fmt *fmt,
-                     struct perf_hpp *hpp __maybe_unused)
+                     struct perf_hpp *hpp __maybe_unused,
+                     struct perf_evsel *evsel __maybe_unused)
 {
        struct diff_hpp_fmt *dfmt =
                container_of(fmt, struct diff_hpp_fmt, fmt);
diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 7912dab6e5fb..e395ef9b0ae0 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -165,7 +165,6 @@ static void perf_gtk__show_hists(GtkWidget *window, struct 
hists *hists,
        struct perf_hpp hpp = {
                .buf            = s,
                .size           = sizeof(s),
-               .ptr            = hists_to_evsel(hists),
        };
 
        nr_cols = 0;
@@ -192,7 +191,7 @@ static void perf_gtk__show_hists(GtkWidget *window, struct 
hists *hists,
        col_idx = 0;
 
        perf_hpp__for_each_format(fmt) {
-               fmt->header(fmt, &hpp);
+               fmt->header(fmt, &hpp, hists_to_evsel(hists));
 
                gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
                                                            -1, ltrim(s),
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index ac39313a3f0c..765e3918368f 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -116,31 +116,28 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry 
*he,
        return ret;
 }
 
-#define __HPP_HEADER_FN(_type, _str, _min_width, _unit_width)          \
-static int hpp__header_##_type(struct perf_hpp_fmt *fmt __maybe_unused,        
\
-                              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_HEADER_FN(_type, _str, _min_width, _unit_width)                  
\
+static int hpp__header_##_type(struct perf_hpp_fmt *fmt __maybe_unused,        
        \
+                              struct perf_hpp *hpp, struct perf_evsel *evsel)  
\
+{                                                                              
\
+       int len = _min_width;                                                   
\
+                                                                               
\
+       if (symbol_conf.event_group)                                            
\
+               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_fmt *fmt __maybe_unused, \
-                             struct perf_hpp *hpp __maybe_unused)      \
+                             struct perf_hpp *hpp __maybe_unused,      \
+                             struct perf_evsel *evsel)                 \
 {                                                                      \
        int len = _min_width;                                           \
                                                                        \
-       if (symbol_conf.event_group) {                                  \
-               struct perf_evsel *evsel = hpp->ptr;                    \
-                                                                       \
+       if (symbol_conf.event_group)                                    \
                len = max(len, evsel->nr_members * _unit_width);        \
-       }                                                               \
+                                                                       \
        return len;                                                     \
 }
 
@@ -329,15 +326,13 @@ unsigned int hists__sort_list_width(struct hists *hists)
        struct perf_hpp_fmt *fmt;
        struct sort_entry *se;
        int i = 0, ret = 0;
-       struct perf_hpp dummy_hpp = {
-               .ptr    = hists_to_evsel(hists),
-       };
+       struct perf_hpp dummy_hpp;
 
        perf_hpp__for_each_format(fmt) {
                if (i)
                        ret += 2;
 
-               ret += fmt->width(fmt, &dummy_hpp);
+               ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
        }
 
        list_for_each_entry(se, &hist_entry__sort_list, list)
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 9bad89228472..d59893edf031 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -379,7 +379,6 @@ 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;
        size_t linesz;
@@ -398,7 +397,7 @@ size_t hists__fprintf(struct hists *hists, bool 
show_header, int max_rows,
                else
                        first = false;
 
-               fmt->header(fmt, &dummy_hpp);
+               fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
                fprintf(fp, "%s", bf);
        }
 
@@ -443,7 +442,7 @@ size_t hists__fprintf(struct hists *hists, bool 
show_header, int max_rows,
                else
                        first = false;
 
-               width = fmt->width(fmt, &dummy_hpp);
+               width = fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
                for (i = 0; i < width; i++)
                        fprintf(fp, ".");
        }
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 9e1cada45bb8..0c76bf972736 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -132,8 +132,10 @@ struct perf_hpp {
 };
 
 struct perf_hpp_fmt {
-       int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp);
-       int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp);
+       int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+                     struct perf_evsel *evsel);
+       int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+                    struct perf_evsel *evsel);
        int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
                     struct hist_entry *he);
        int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
-- 
1.7.11.7

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