From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C6552E8897; Wed, 15 Jul 2026 01:44:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784079881; cv=none; b=e5ZUvYKd1q02hR6mKhIcQwYPKLw1HAd5ISjQayjLOEW/xa4ueHsuKe83DHM1AaTKv4D3lggUr6e7Oc2EgBzCQVywJb7IckYVZPIwwOpKcRcngy59FUlyUee96AvASVQej/sqVFc+uPvA0zKCznp6Vv2Yl+cbKQZjSPFG4XY5bro= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784079881; c=relaxed/simple; bh=XkgXf+BmWb1gm42X0hFSsPY2QiN+40F9WNZpKmrmhe0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=M24yiK3WUHOFAR0foK0OQXpiuCCPGhPKHTEA56rvmn7pd0m3U52P8nCtaZ96brcHbUtpMhdq8SEKCpWm3u1scCmPgthq+rcTdnD2ytXLlqOt0gbJWGDbddRRKreqiQ/htRF5SLF29ocCjRY8xvemEMdxL2L94J1tN4r5ejO6cxA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=av0+6RgK; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="av0+6RgK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A76B51F000E9; Wed, 15 Jul 2026 01:44:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784079880; bh=1dNoqBTEg7S9Qpsv/+4QI0aTEXe3+f5Z++F4nY+50YU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=av0+6RgKGKhGad+TlsGrTD8wxX4RWSxNYMUn//2Pz+sWzdrc4kXA8Slw3F/di9v7z h+Bl58rYbxXn1EUpSOuLke91DTPl5NmpiZdCmlx91XS1NeUFtI1ymyOX3ElcJXF+OA 1JGfsiULSJzNd4Eovu280th2K2dJdgI3WNLHARfasEfa6MYdIRBziaqH3Zv7MC9/lW Mo8iQ+iQMWCxYcx0sIASOXO01joXc/JuxwB1eX+7fLi88S1FTzjBP3bIjl3G7VExNc qsllo8CKSni6NQK/yu0hJUMwBpo+QKlmnNiQkF+mmZVWDl7RqorW5p/JT6onnlTeCk 6CNiQtPT1mUqg== From: "Masami Hiramatsu (Google)" To: Steven Rostedt , Peter Zijlstra , Ingo Molnar , x86@kernel.org Cc: Jinchao Wang , Mathieu Desnoyers , Masami Hiramatsu , Thomas Gleixner , Borislav Petkov , Dave Hansen , "H . Peter Anvin" , Alexander Shishkin , Ian Rogers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-perf-users@vger.kernel.org Subject: [PATCH v7 03/10] selftests: tracing: Add a basic testcase for wprobe Date: Wed, 15 Jul 2026 10:44:34 +0900 Message-ID: <178407987428.95826.3097357125404908509.stgit@devnote2> X-Mailer: git-send-email 2.43.0 In-Reply-To: <178407983818.95826.12714571928538799781.stgit@devnote2> References: <178407983818.95826.12714571928538799781.stgit@devnote2> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: Masami Hiramatsu (Google) Add 'add_remove_wprobe.tc' testcase for testing wprobe event that tests adding and removing operations of the wprobe event. Link: https://lore.kernel.org/all/175859026716.374439.14852239332989324292.stgit@devnote2/ Signed-off-by: Masami Hiramatsu (Google) --- tools/testing/selftests/ftrace/config | 1 .../ftrace/test.d/dynevent/add_remove_wprobe.tc | 68 ++++++++++++++++++++ 2 files changed, 69 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index 544de0db5f58..d2f503722020 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -27,3 +27,4 @@ CONFIG_STACK_TRACER=y CONFIG_TRACER_SNAPSHOT=y CONFIG_UPROBES=y CONFIG_UPROBE_EVENTS=y +CONFIG_WPROBE_EVENTS=y diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc new file mode 100644 index 000000000000..20774c7f69f8 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc @@ -0,0 +1,68 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove wprobe events +# requires: dynamic_events "w[:[/][]] [r|w|rw]@[:]":README + +echo 0 > events/enable +echo > dynamic_events + +# Use jiffies as a variable that is frequently written to. +TARGET=jiffies + +echo "w:my_wprobe w@$TARGET" >> dynamic_events + +grep -q my_wprobe dynamic_events +if [ $? -ne 0 ]; then + echo "Failed to create wprobe event" + exit_fail +fi + +test -d events/wprobes/my_wprobe +if [ $? -ne 0 ]; then + echo "Failed to create wprobe event directory" + exit_fail +fi + +echo 1 > events/wprobes/my_wprobe/enable + +# Check if the event is enabled +cat events/wprobes/my_wprobe/enable | grep -q 1 +if [ $? -ne 0 ]; then + echo "Failed to enable wprobe event" + exit_fail +fi + +# Let some time pass to trigger the breakpoint +sleep 1 + +# Check if we got any trace output +if !grep -q my_wprobe trace; then + echo "wprobe event was not triggered" +fi + +echo 0 > events/wprobes/my_wprobe/enable + +# Check if the event is disabled +cat events/wprobes/my_wprobe/enable | grep -q 0 +if [ $? -ne 0 ]; then + echo "Failed to disable wprobe event" + exit_fail +fi + +echo "-:my_wprobe" >> dynamic_events + +! grep -q my_wprobe dynamic_events +if [ $? -ne 0 ]; then + echo "Failed to remove wprobe event" + exit_fail +fi + +! test -d events/wprobes/my_wprobe +if [ $? -ne 0 ]; then + echo "Failed to remove wprobe event directory" + exit_fail +fi + +clear_trace + +exit 0