From nobody Mon Apr 6 14:55:30 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F656C07E9D for ; Tue, 27 Sep 2022 16:02:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232852AbiI0QCS (ORCPT ); Tue, 27 Sep 2022 12:02:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232395AbiI0QBk (ORCPT ); Tue, 27 Sep 2022 12:01:40 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A42779A41 for ; Tue, 27 Sep 2022 09:01:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 56B84CE189A for ; Tue, 27 Sep 2022 16:01:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 44F5BC433C1; Tue, 27 Sep 2022 16:01:33 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1odD2h-00G2pv-26; Tue, 27 Sep 2022 12:02:43 -0400 Message-ID: <20220927160243.204183194@goodmis.org> User-Agent: quilt/0.66 Date: Tue, 27 Sep 2022 12:02:21 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Daniel Bristot de Oliveira , Ingo Molnar , Andrew Morton , Masami Hiramatsu , Tom Zanussi Subject: [for-next][PATCH 05/20] tracing: Add numeric delta time to the trace event benchmark References: <20220927160216.349640304@goodmis.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Steven Rostedt (Google)" In order to testing filtering and histograms via the trace event benchmark, record the delta time of the last event as a numeric value (currently, it just saves it within the string) so that filters and histograms can use it. Link: https://lkml.kernel.org/r/20220906225529.213677569@goodmis.org Cc: Ingo Molnar Cc: Andrew Morton Cc: Masami Hiramatsu Cc: Tom Zanussi Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace_benchmark.c | 2 +- kernel/trace/trace_benchmark.h | 8 +++++--- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/kernel/trace/trace_benchmark.c b/kernel/trace/trace_benchmark.c index 801c2a7f7605..54d5fa35c90a 100644 --- a/kernel/trace/trace_benchmark.c +++ b/kernel/trace/trace_benchmark.c @@ -51,7 +51,7 @@ static void trace_do_benchmark(void) =20 local_irq_disable(); start =3D trace_clock_local(); - trace_benchmark_event(bm_str); + trace_benchmark_event(bm_str, bm_last); stop =3D trace_clock_local(); local_irq_enable(); =20 diff --git a/kernel/trace/trace_benchmark.h b/kernel/trace/trace_benchmark.h index 79e6fbe5b365..c3e91060dc94 100644 --- a/kernel/trace/trace_benchmark.h +++ b/kernel/trace/trace_benchmark.h @@ -14,19 +14,21 @@ extern void trace_benchmark_unreg(void); =20 TRACE_EVENT_FN(benchmark_event, =20 - TP_PROTO(const char *str), + TP_PROTO(const char *str, u64 delta), =20 - TP_ARGS(str), + TP_ARGS(str, delta), =20 TP_STRUCT__entry( __array( char, str, BENCHMARK_EVENT_STRLEN ) + __field( u64, delta) ), =20 TP_fast_assign( memcpy(__entry->str, str, BENCHMARK_EVENT_STRLEN); + __entry->delta =3D delta; ), =20 - TP_printk("%s", __entry->str), + TP_printk("%s delta=3D%llu", __entry->str, __entry->delta), =20 trace_benchmark_reg, trace_benchmark_unreg ); --=20 2.35.1