From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 07/66] libtraceevent: Round up in tep_print_event() time precision Date: Wed, 25 Sep 2019 21:31:45 -0300 Message-ID: <20190926003244.13962-8-acme@kernel.org> References: <20190926003244.13962-1-acme@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190926003244.13962-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, "Steven Rostedt (VMware)" , Jiri Olsa , Tzvetomir Stoyanov , linux trace devel , Arnaldo Carvalho de Melo List-Id: linux-perf-users.vger.kernel.org From: "Steven Rostedt (VMware)" When testing the output of the old trace-cmd compared to the one that uses the updated tep_print_event() logic, it was different in that the time stamp precision in the old format would round up to the nearest precision, where as the new logic truncates. Bring back the old method of rounding up. Signed-off-by: Steven Rostedt (VMware) Cc: Jiri Olsa Cc: Tzvetomir Stoyanov Cc: linux trace devel Link: http://lore.kernel.org/lkml/20190919165119.5efa5de6@gandalf.local.home Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/event-parse.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index 6f842af4550b..d948475585ce 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -5527,8 +5527,10 @@ static void print_event_time(struct tep_handle *tep, struct trace_seq *s, if (divstr && isdigit(*(divstr + 1))) div = atoi(divstr + 1); time = record->ts; - if (div) + if (div) { + time += div / 2; time /= div; + } pr = prec; while (pr--) p10 *= 10; -- 2.21.0