6 files changed, 13 insertions, 17 deletions

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 5cb577a3c5b2..413c65a1ba39 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -214,8 +214,7 @@ static int __cmd_diff(void)
                 first = false;
 
                 hists__match(&evsel_old->hists, &evsel->hists);
-                hists__fprintf(&evsel->hists, &evsel_old->hists,
-                               true, 0, 0, stdout);
+                hists__fprintf(&evsel->hists, true, 0, 0, stdout);
         }
 
 out_delete:
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 6748cac919d1..95e7ea879b8a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -320,7 +320,7 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
                 const char *evname = perf_evsel__name(pos);
 
                 hists__fprintf_nr_sample_events(hists, evname, stdout);
-                hists__fprintf(hists, NULL, true, 0, 0, stdout);
+                hists__fprintf(hists, true, 0, 0, stdout);
                 fprintf(stdout, "\n\n");
         }
 
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 357115874b77..ff6db8086805 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -316,7 +316,7 @@ static void perf_top__print_sym_table(struct perf_top *top)
         hists__output_recalc_col_len(&top->sym_evsel->hists,
                                      top->winsize.ws_row - 3);
         putchar('\n');
-        hists__fprintf(&top->sym_evsel->hists, NULL, false,
+        hists__fprintf(&top->sym_evsel->hists, false,
                        top->winsize.ws_row - 4 - printed, win_width, stdout);
 }
 
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 532a60177c32..6b0138e5f332 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -228,16 +228,17 @@ static int hpp__width_delta(struct perf_hpp *hpp __maybe_unused)
 
 static int hpp__entry_delta(struct perf_hpp *hpp, struct hist_entry *he)
 {
-        struct hists *pair_hists = hpp->ptr;
+        struct hist_entry *pair = he->pair;
+        struct hists *pair_hists = pair ? pair->hists : NULL;
         u64 old_total, new_total;
         double old_percent = 0, new_percent = 0;
         double diff;
         const char *fmt = symbol_conf.field_sep ? "%s" : "%7.7s";
         char buf[32] = " ";
 
-        old_total = pair_hists->stats.total_period;
-        if (old_total > 0 && he->pair)
-                old_percent = 100.0 * he->pair->period / old_total;
+        old_total = pair_hists ? pair_hists->stats.total_period : 0;
+        if (old_total > 0 && pair)
+                old_percent = 100.0 * pair->period / old_total;
 
         new_total = hpp->total_period;
         if (new_total > 0)
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 0aa6776caba5..1340c93aa619 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -307,8 +307,7 @@ static size_t hist_entry__callchain_fprintf(struct hist_entry *he,
 }
 
 static int hist_entry__fprintf(struct hist_entry *he, size_t size,
-                               struct hists *hists, struct hists *pair_hists,
-                               u64 total_period, FILE *fp)
+                               struct hists *hists, u64 total_period, FILE *fp)
 {
         char bf[512];
         int ret;
@@ -316,7 +315,6 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
                 .buf            = bf,
                 .size           = size,
                 .total_period   = total_period,
-                .ptr            = pair_hists,
         };
         bool color = !symbol_conf.field_sep;
 
@@ -335,8 +333,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
         return ret;
 }
 
-size_t hists__fprintf(struct hists *hists, struct hists *pair,
-                      bool show_header, int max_rows,
+size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
                       int max_cols, FILE *fp)
 {
         struct sort_entry *se;
@@ -351,7 +348,6 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
         struct perf_hpp dummy_hpp = {
                 .buf    = bf,
                 .size   = sizeof(bf),
-                .ptr    = pair,
         };
         bool first = true;
 
@@ -453,7 +449,7 @@ print_entries:
                 if (h->filtered)
                         continue;
 
-                ret += hist_entry__fprintf(h, max_cols, hists, pair,
+                ret += hist_entry__fprintf(h, max_cols, hists,
                                            total_period, fp);
 
                 if (max_rows && ++nr_rows >= max_rows)
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index b1a2b9d9b658..b83a2268b5d2 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -98,8 +98,8 @@ void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 void hists__inc_nr_events(struct hists *self, u32 type);
 size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
 
-size_t hists__fprintf(struct hists *self, struct hists *pair,
-                      bool show_header, int max_rows, int max_cols, FILE *fp);
+size_t hists__fprintf(struct hists *self, bool show_header, int max_rows,
+                      int max_cols, FILE *fp);
 
 int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
 int hist_entry__annotate(struct hist_entry *self, size_t privsize);