From nobody Wed Sep 10 11:03:51 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 52C4A306B08; Fri, 5 Sep 2025 14:59:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757084340; cv=none; b=CfdSJ32jauuo+Zue5KVae4nZD7zSWi7bT2unFC4P0gbO5NT0DN5wMFyZWDMR+XsR2VZd5Cw3x+RCNde5bv6ckmzuI9dBje2pBfJZzhRuOaEqZSCegKfeUdSOQWKLHL8TgXOqOO8/uYACbHr80ltpuc83/Kt9BpALrKCiiduwA/M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757084340; c=relaxed/simple; bh=reVuS9zhTFmkX8jA2nOh2kSTCPa25rqxfdxv2B2YT/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DPAC48X+9EZI1pRqv0gyYJEdo7VwRRMCsmKZksU9mRwCNJ7x4duOrPVjjfHUgpjVkPZMzOurdeWIn563wVm34r1QkiKJy8rGDQo/qkQZWN9mREvnKUm2Ki/qJnJY7sIJoHVHKzLGNyVI8qMZv621rE2jDLWdkC9+fbHI/zZQM0Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EX4o4y4x; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EX4o4y4x" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04A13C4CEF4; Fri, 5 Sep 2025 14:58:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757084339; bh=reVuS9zhTFmkX8jA2nOh2kSTCPa25rqxfdxv2B2YT/8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EX4o4y4xKAuUGKFAQd9CAubRxt4lm2wqWLNIGd0ZiNrK2hDPiXhm47QyUZ/Haq1XA 0O8WFp2GrG2uq8afEjt/ImiIVkyOZpzF8NFYpy3BcXof4oH0PQfxCNubg8q/m+alAC gRlRbPZThhauOm0/DoRXMfLXynymbAqsJ9HAfaURJJr4aWi27buSxceA/saZaqeD5Z MZvBCnTNcHY/ohwSE/UxKrwclPt5XLM9k++NKhS3OY41qUkdbm6aeS2x5PeQt7C+a5 iOr/fpEnOoTnw2ihfjS2Ti3cLS/Q1a41HsfyAkzoqQIo9o5aRw/rg8ZbtloJXOS00I M/eqqr9dLxijA== 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 v2 5/6] selftests: tracing: Add a basic testcase for wprobe Date: Fri, 5 Sep 2025 23:58:54 +0900 Message-ID: <175708433451.64001.6930500874071515570.stgit@devnote2> X-Mailer: git-send-email 2.43.0 In-Reply-To: <175708427997.64001.11661389635019507808.stgit@devnote2> References: <175708427997.64001.11661389635019507808.stgit@devnote2> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Masami Hiramatsu (Google) Add 'add_remove_wprobe.tc' testcase for testing wprobe event that tests adding and removing operations of the wprobe event. Signed-off-by: Masami Hiramatsu (Google) --- .../ftrace/test.d/dynevent/add_remove_wprobe.tc | 68 ++++++++++++++++= ++++ 1 file changed, 68 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remo= ve_wprobe.tc diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wpro= be.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=3Djiffies + +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