Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932741AbdCIRhf (ORCPT ); Thu, 9 Mar 2017 12:37:35 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:34047 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932164AbdCIRhc (ORCPT ); Thu, 9 Mar 2017 12:37:32 -0500 From: Taeung Song To: Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org, Jiri Olsa , Namhyung Kim , Ingo Molnar , Peter Zijlstra , Wang Nan , Masami Hiramatsu , Taeung Song , Jiri Olsa Subject: [PATCH v3 3/7] perf annotate: Fix missing setting nr samples on source_line Date: Fri, 10 Mar 2017 02:35:37 +0900 Message-Id: <1489080941-3965-4-git-send-email-treeze.taeung@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1489080941-3965-1-git-send-email-treeze.taeung@gmail.com> References: <1489080941-3965-1-git-send-email-treeze.taeung@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2883 Lines: 89 If using --show-total-period with -l, disasm__calc_percent() use a 'samples' array of source_line. But samples[evidx].nr is always zero so print 0 values as below. Before: $ perf annotate --stdio -l --show-total-period ... 0 : 400816: push %rbp 0 : 400817: mov %rsp,%rbp 0 : 40081a: mov %edi,-0x24(%rbp) 0 : 40081d: mov %rsi,-0x30(%rbp) 0 : 400821: mov -0x24(%rbp),%eax 0 : 400824: mov -0x30(%rbp),%rdx 0 : 400828: mov (%rdx),%esi 0 : 40082a: mov $0x0,%edx ... The reason is that in symbol__get_source_line() did't set number of samples into a memeber variable 'nr' of samples of source_line. So fix it for correct number of samples when using --show-total-period option as below. After: $ perf annotate --stdio -l --show-total-period ... 3 : 400816: push %rbp 4 : 400817: mov %rsp,%rbp 0 : 40081a: mov %edi,-0x24(%rbp) 0 : 40081d: mov %rsi,-0x30(%rbp) 1 : 400821: mov -0x24(%rbp),%eax 2 : 400824: mov -0x30(%rbp),%rdx 0 : 400828: mov (%rdx),%esi 1 : 40082a: mov $0x0,%edx ... Cc: Namhyung Kim Cc: Jiri Olsa Signed-off-by: Taeung Song --- tools/perf/util/annotate.c | 6 ++++-- tools/perf/util/annotate.h | 2 +- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 9bb43cd..63130ec 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1659,7 +1659,7 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, start = map__rip_2objdump(map, sym->start); for (i = 0; i < len; i++) { - u64 offset; + u64 offset, nr_samples; double percent_max = 0.0; src_line->nr_pcnt = nr_pcnt; @@ -1668,12 +1668,14 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, double percent = 0.0; h = annotation__histogram(notes, evidx + k); + nr_samples = h->addr[i]; if (h->sum) - percent = 100.0 * h->addr[i] / h->sum; + percent = 100.0 * nr_samples / h->sum; if (percent > percent_max) percent_max = percent; src_line->samples[k].percent = percent; + src_line->samples[k].nr = nr_samples; } if (percent_max <= 0.5) diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 09776b5..948aa8e 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -98,7 +98,7 @@ struct cyc_hist { struct source_line_samples { double percent; double percent_sum; - double nr; + u64 nr; }; struct source_line { -- 2.7.4