perf top: Remove redundant perf_top->sym_counter

We can get that counter index from perf_top->sym_evsel->idx instead.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 8 insertions, 7 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 80c9e062bd5b..4bf6e02c2b2a 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -515,24 +515,25 @@ static void handle_keypress(struct perf_session *session, int c)
                         break;
                 case 'E':
                         if (top.evlist->nr_entries > 1) {
+                                int counter;
                                 fprintf(stderr, "\nAvailable events:");
 
                                 list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
                                         fprintf(stderr, "\n\t%d %s", top.sym_evsel->idx, event_name(top.sym_evsel));
 
-                                prompt_integer(&top.sym_counter, "Enter details event counter");
+                                prompt_integer(&counter, "Enter details event counter");
 
-                                if (top.sym_counter >= top.evlist->nr_entries) {
+                                if (counter >= top.evlist->nr_entries) {
                                         top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
-                                        top.sym_counter = 0;
                                         fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(top.sym_evsel));
                                         sleep(1);
                                         break;
                                 }
                                 list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
-                                        if (top.sym_evsel->idx == top.sym_counter)
+                                        if (top.sym_evsel->idx == counter)
                                                 break;
-                        } else top.sym_counter = 0;
+                        } else
+                                top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
                         break;
                 case 'f':
                         prompt_integer(&top.count_filter, "Enter display event count filter");
diff --git a/tools/perf/util/top.c b/tools/perf/util/top.c
index 75cfe4d45119..fcfb77762819 100644
--- a/tools/perf/util/top.c
+++ b/tools/perf/util/top.c
@@ -171,7 +171,7 @@ float perf_top__decay_samples(struct perf_top *top, struct rb_root *root)
 {
         struct sym_entry *syme, *n;
         float sum_ksamples = 0.0;
-        int snap = !top->display_weighted ? top->sym_counter : 0, j;
+        int snap = !top->display_weighted ? top->sym_evsel->idx : 0, j;
 
         /* Sort the active symbols */
         pthread_mutex_lock(&top->active_symbols_lock);
diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h
index 96d1cb78af01..96a78312c719 100644
--- a/tools/perf/util/top.h
+++ b/tools/perf/util/top.h
@@ -41,7 +41,7 @@ struct perf_top {
         u64                exact_samples;
         u64                guest_us_samples, guest_kernel_samples;
         int                print_entries, count_filter, delay_secs;
-        int                display_weighted, freq, rb_entries, sym_counter;
+        int                display_weighted, freq, rb_entries;
         pid_t              target_pid, target_tid;
         bool               hide_kernel_symbols, hide_user_symbols, zero;
         const char         *cpu_list;