From nobody Thu Oct 2 05:03:24 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 334211F4295; Tue, 23 Sep 2025 01:17:53 +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=1758590273; cv=none; b=WP6JByk7842nY02fuA0wza996JFotV6gyKGWKf/e/dP/BfyZnk1Q83rym7FEKJ6la8PLCuad+3AacUIiPFtgbRnewLT/3ElXlxL5HsklFLtWPxUYcLgpQ1c6T/Aj4+UPtfbQBNLu3IL8lcJXHiTEehFnYxxETmmxPsmloEFMKRk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758590273; c=relaxed/simple; bh=WTfY8W9YzkjnAdf/Now+FXFBDLbx7lwJjj6n2qVazKI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=HzYcOS2CcGuI+ZwgxHfdZ9M94whc5LYsH9k3L5gc6A8ESy8O8mKGvJnYcccuDA+WZlCh/h0w/F0x4fNEnSy/REarMZ2RCQ2UrU3s13ueHgBnBHOH+uUD1IHjCHu/YeuMUmTf5+xjPPPao2QoPYMNg5fs/FqIEsbVUZZKXuPh3Zg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HJ9ABSrB; 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="HJ9ABSrB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 600AAC4CEF0; Tue, 23 Sep 2025 01:17:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758590273; bh=WTfY8W9YzkjnAdf/Now+FXFBDLbx7lwJjj6n2qVazKI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HJ9ABSrBnixi9SmSb8sfkhAVcv6r/+KxPJ/l0UBhrJxUszpOiBQzkyrPnIxId7eF9 e1M4VGzk7/LEAceRzj2OJJe7pUZWvTO/GyIE+/UpKqXhuY7198BDwF345kUzK+es+v TVZ2FJylRyNi4cxGC6xXH1HfU+FEf4JDEfQK3RW3sCiBouAeG0/j4gVtUy5FGA6/b9 6qwyAmxh+YR9P0BBynOP2CPgwRsTj2wz+qHnP74tGvr33zxxczXgMkTyVfm6hbthQp /87IcxOegGMNZh4D82GTzV7bxeJBX8olbkCOgMs7U2IvMVUU6IgZaa6XFqjI5dJ8uR V9GlmLF2HlGvQ== 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 v5 6/8] selftests: tracing: Add a basic testcase for wprobe Date: Tue, 23 Sep 2025 10:17:47 +0900 Message-ID: <175859026716.374439.14852239332989324292.stgit@devnote2> X-Mailer: git-send-email 2.43.0 In-Reply-To: <175859019940.374439.7398451124225791618.stgit@devnote2> References: <175859019940.374439.7398451124225791618.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) --- Changes in v5: - Enable CONFIG_WPROBE_EVENTS in config for ftrace selftest --- tools/testing/selftests/ftrace/config | 1=20 .../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_remo= ve_wprobe.tc diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftest= s/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=3Dy CONFIG_TRACER_SNAPSHOT=3Dy CONFIG_UPROBES=3Dy CONFIG_UPROBE_EVENTS=3Dy +CONFIG_WPROBE_EVENTS=3Dy 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