From patchwork Wed Jan 25 17:13:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 48230 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp387623wrn; Wed, 25 Jan 2023 09:14:58 -0800 (PST) X-Google-Smtp-Source: AK7set9wpy0kq+up711XaVJ/PSetz67vaxNdEiJgbSfak9tFiUs7QUS0coqpE6e1q9herLsVoV9z X-Received: by 2002:a17:906:fb09:b0:878:4bda:200e with SMTP id lz9-20020a170906fb0900b008784bda200emr807198ejb.4.1674666898193; Wed, 25 Jan 2023 09:14:58 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674666898; cv=none; d=google.com; s=arc-20160816; b=RV/y0itigURx4x1AXFcoJAQYv9oR2zpRUhmB/bF1ZoVob0ZkclFjktPgBc/57tlEMg ovGkAKsIEkKqTtapVKnzuEQbD/MvrJt8GzdJjcqFdd8hlUuOe8I+ewEqnfi+i8yo7z7U Twb+p7fFLXB+fOlBzwRN6zqqlpfV4yDcMx3EN0RV8rXmrqVb34+A5SlrUTn9Cx/c8nTj 2pLgkJ/PNSVQIjb5PuPdl1bVJgn2byEQawudHcxYaXUpG/M3+Xb1KaPE2pCFXsYbvfVr wwA7oeeLYfMJwLWELE8mEnlKbtoi7BJwZY7PjI5z4AEllZIvlaKABQfFz8B2Jk+NJz9H sqQg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:subject:cc:to:from:date :user-agent:message-id; bh=Nk3OnkGZR0RmpIeYeKsXNevU51KIiBWzMCX9uFV6enM=; b=Q/KD9NDNFdr1sBOp7Che4aaRzjUkujpWC1BksQsbHPI++JZOPx/GloAEpBn+azJzmF jiDn5xqzk6ISiB6gb6cJ272lW0U3H7kgcaTzGRQbd4EsmJgszsWY5TCyJVUKZNuMjVvM x+i9bkWVdmfLAJT5YAsGyOYFlKgQSmjE1UPmKRjrzqfE29KYSWV6MzpqgqZ24o6cKnuc td77rdtbsJ8TxzFnB7vGrTactwywjTje1SZnM406nD5ZGk6tiuZTEUnftmUKBFb92iof eMDdxw9qITrW9UO8Oc9nu52VnqZYAWtJe+z93mcz2ehcdbVzpHMo5U6hZZnhxMhCXR0u Rxaw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id fd15-20020a1709072a0f00b00877e53cad6dsi6126373ejc.251.2023.01.25.09.14.33; Wed, 25 Jan 2023 09:14:58 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236130AbjAYROI (ORCPT + 99 others); Wed, 25 Jan 2023 12:14:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235356AbjAYRNx (ORCPT ); Wed, 25 Jan 2023 12:13:53 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66109976C for ; Wed, 25 Jan 2023 09:13:42 -0800 (PST) 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 dfw.source.kernel.org (Postfix) with ESMTPS id F3FC16158C for ; Wed, 25 Jan 2023 17:13:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6698CC433AC; Wed, 25 Jan 2023 17:13:41 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1pKjLA-004Nuh-1a; Wed, 25 Jan 2023 12:13:40 -0500 Message-ID: <20230125171340.301718233@goodmis.org> User-Agent: quilt/0.66 Date: Wed, 25 Jan 2023 12:13:02 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Andrew Morton , Tom Zanussi , Ross Zwisler , Ching-lin Yu Subject: [for-next][PATCH 10/12] tracing/histogram: Add simple tests for stacktrace usage of synthetic events References: <20230125171252.431857411@goodmis.org> MIME-Version: 1.0 X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756015517539527881?= X-GMAIL-MSGID: =?utf-8?q?1756015517539527881?= From: "Steven Rostedt (Google)" Update the selftests to include a test of passing a stacktrace between the events of a synthetic event. Link: https://lkml.kernel.org/r/20230117152236.475439286@goodmis.org Cc: Masami Hiramatsu Cc: Andrew Morton Cc: Tom Zanussi Cc: Ross Zwisler Cc: Ching-lin Yu Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace.c | 2 +- .../trigger-synthetic-event-stack.tc | 24 +++++++++++++++++++ .../trigger-synthetic-event-syntax.tc | 6 +++++ 3 files changed, 31 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 78ed5f1baa8c..b90eecd27dfc 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5757,7 +5757,7 @@ static const char readme_msg[] = #ifdef CONFIG_SYNTH_EVENTS " events/synthetic_events\t- Create/append/remove/show synthetic events\n" "\t Write into this file to define/undefine new synthetic events.\n" - "\t example: echo 'myevent u64 lat; char name[]' >> synthetic_events\n" + "\t example: echo 'myevent u64 lat; char name[]; long[] stack' >> synthetic_events\n" #endif #endif ; diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc new file mode 100644 index 000000000000..755dbe94ccf4 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc @@ -0,0 +1,24 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test inter-event histogram trigger trace action with dynamic string param +# requires: set_event synthetic_events events/sched/sched_process_exec/hist "long[]' >> synthetic_events":README + +fail() { #msg + echo $1 + exit_fail +} + +echo "Test create synthetic event with stack" + + +echo 's:wake_lat pid_t pid; u64 delta; unsigned long[] stack;' > dynamic_events +echo 'hist:keys=next_pid:ts=common_timestamp.usecs,st=stacktrace if prev_state == 1||prev_state == 2' >> events/sched/sched_switch/trigger +echo 'hist:keys=prev_pid:delta=common_timestamp.usecs-$ts,s=$st:onmax($delta).trace(wake_lat,prev_pid,$delta,$s)' >> events/sched/sched_switch/trigger +echo 1 > events/synthetic/wake_lat/enable +sleep 1 + +if ! grep -q "=>.*sched" trace; then + fail "Failed to create synthetic event with stack" +fi + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc index 2968cdc7df30..366f1f3ad906 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc @@ -70,6 +70,12 @@ grep "myevent[[:space:]]unsigned long var" synthetic_events echo "myevent char var[10]" > synthetic_events grep "myevent[[:space:]]char\[10\] var" synthetic_events +if grep -q 'long\[\]' README; then + # test stacktrace type + echo "myevent unsigned long[] var" > synthetic_events + grep "myevent[[:space:]]unsigned long\[\] var" synthetic_events +fi + do_reset exit 0