diff options
| -rw-r--r-- | Documentation/perf_counter/builtin-top.c | 54 |
1 files changed, 28 insertions, 26 deletions
diff --git a/Documentation/perf_counter/builtin-top.c b/Documentation/perf_counter/builtin-top.c index 74021ac90f5..4bed265926d 100644 --- a/Documentation/perf_counter/builtin-top.c +++ b/Documentation/perf_counter/builtin-top.c @@ -374,18 +374,26 @@ static struct sym_entry tmp[MAX_SYMS]; static void print_sym_table(void) { - int i, printed; + int i, j, active_count, printed; int counter; float events_per_sec = events/delay_secs; float kevents_per_sec = (events-userspace_events)/delay_secs; float sum_kevents = 0.0; events = userspace_events = 0; - memcpy(tmp, sym_table, sizeof(sym_table[0])*sym_table_count); - qsort(tmp, sym_table_count, sizeof(tmp[0]), compare); - for (i = 0; i < sym_table_count && tmp[i].count[0]; i++) - sum_kevents += tmp[i].count[0]; + /* Iterate over symbol table and copy/tally/decay active symbols. */ + for (i = 0, active_count = 0; i < sym_table_count; i++) { + if (sym_table[i].count[0]) { + tmp[active_count++] = sym_table[i]; + sum_kevents += sym_table[i].count[0]; + + for (j = 0; j < nr_counters; j++) + sym_table[i].count[j] = zero ? 0 : sym_table[i].count[j] * 7 / 8; + } + } + + qsort(tmp, active_count + 1, sizeof(tmp[0]), compare); write(1, CONSOLE_CLEAR, strlen(CONSOLE_CLEAR)); @@ -433,29 +441,23 @@ static void print_sym_table(void) " ______ ______ _____ ________________ _______________\n\n" ); - for (i = 0, printed = 0; i < sym_table_count; i++) { + for (i = 0, printed = 0; i < active_count; i++) { float pcnt; - int count; - if (printed <= 18 && tmp[i].count[0] >= count_filter) { - pcnt = 100.0 - (100.0*((sum_kevents-tmp[i].count[0])/sum_kevents)); - - if (nr_counters == 1) - printf("%19.2f - %4.1f%% - %016llx : %s\n", - sym_weight(tmp + i), - pcnt, tmp[i].addr, tmp[i].sym); - else - printf("%8.1f %10ld - %4.1f%% - %016llx : %s\n", - sym_weight(tmp + i), - tmp[i].count[0], - pcnt, tmp[i].addr, tmp[i].sym); - printed++; - } - /* - * Add decay to the counts: - */ - for (count = 0; count < nr_counters; count++) - sym_table[i].count[count] = zero ? 0 : sym_table[i].count[count] * 7 / 8; + if (++printed > 18 || tmp[i].count[0] < count_filter) + break; + + pcnt = 100.0 - (100.0*((sum_kevents-tmp[i].count[0])/sum_kevents)); + + if (nr_counters == 1) + printf("%19.2f - %4.1f%% - %016llx : %s\n", + sym_weight(tmp + i), + pcnt, tmp[i].addr, tmp[i].sym); + else + printf("%8.1f %10ld - %4.1f%% - %016llx : %s\n", + sym_weight(tmp + i), + tmp[i].count[0], + pcnt, tmp[i].addr, tmp[i].sym); } if (sym_filter_entry) |