From nobody Fri Oct 3 12:13:10 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 7BBB834DCC1; Mon, 1 Sep 2025 14:45:35 +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=1756737935; cv=none; b=u97/2CnU5nZqeNsuLVAHSR0ysExW4PP+sHjmxE36ywkJeu4mJLG+KjW0c9aYb0uJM22pCc76kegs41dyNjEg9wYdelAJzDdCXgTacMVj9eNwGVVgq6lMDc8lHHn7l8olxiE80fOo6QXPcBsZIQOKuFmdNvktmAw+sAu6lwZiXqc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756737935; c=relaxed/simple; bh=reVuS9zhTFmkX8jA2nOh2kSTCPa25rqxfdxv2B2YT/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=D2AV+X6FKImYXO7lR+wr4Valn7OjBygLpXgy1AjbN/PvimROKySRGB4kGPkqwatlroPb6Y3tpuusuD7/kYPfv5KGt90GxlvEdpbOCsGyIonNOcEbkT2lvIc2keCXf7HbnVjLWuTRyFkWu7pvlUu9LRpUEpQA/ekokB2Ccirkk28= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DJCMVDIr; 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="DJCMVDIr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4394AC4CEF5; Mon, 1 Sep 2025 14:45:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756737935; bh=reVuS9zhTFmkX8jA2nOh2kSTCPa25rqxfdxv2B2YT/8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DJCMVDIr2ubHxTbsJxYY7L4cWlTJ5ERRFKLSscAj+fiDoUdwVO5URM9EWpIAa7u6n 7m5hZmHD5ybObHSszNGx1SAE5g4XkcWkOYyltIENdMbobsaucuQUBRTs+tHhlzfUvR SlYucCUssUN4SUNuWc8jJICjdbD+SI23NN6KeOVFjS+1Os8CPmiH8LutbXhMkCD1I2 ufugrhnr1ihlhTZrhuUiwp4h1A9zieyzkehKnxGlagdRLAD3zGRAPl6hpePwpjkzaV eRim0bWn2d4xWQraUTbXNxihG5AdRbzztNbFSej5QQPQrNJTTGZG1ZGAN+NJKy690R ZnQJh+z5XKhEw== From: "Masami Hiramatsu (Google)" To: Steven Rostedt , Peter Zijlstra , Ingo Molnar , x86@kernel.org Cc: 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: [RFC PATCH 5/6] selftests: tracing: Add a basic testcase for wprobe Date: Mon, 1 Sep 2025 23:45:29 +0900 Message-ID: <175673792989.478080.12561167604736619473.stgit@devnote2> X-Mailer: git-send-email 2.43.0 In-Reply-To: <175673787502.478080.3342912952394010967.stgit@devnote2> References: <175673787502.478080.3342912952394010967.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