From nobody Thu Oct 2 21:57:09 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 2622F1A5BBF; Thu, 11 Sep 2025 00:43:33 +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=1757551414; cv=none; b=U8F6LwfnyttE/l+P2pFdSykMKxsrd5PATFOwrh3caxBaMa0j9P0L/2XcOZ/D82k3F10ryAIbpptzRAN+lsRafX+f1Zq1G0cW895tNoA0FHwT6fuYL9hnUyce8q3RaE0S3wRDcLkcbhdBCgS9lUAm5i08VF99BhtCgYHpx5CZ9bU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757551414; c=relaxed/simple; bh=reVuS9zhTFmkX8jA2nOh2kSTCPa25rqxfdxv2B2YT/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=EmXPJSCA4kv/Zi0zGqL3GEybaUgyokFoCLESY5c5mQ+agR5NaN+cudotUlfAB4K3efpv6jUcmeUFxpUcLQ6Ua57Vw3N5brFy55rCJNX+ymL2ZZrRZpFs5oHVF8B3FqBIgfeW6aZzfcKemg6+EaXhEa8e0T/RuaFoqe2D3+ZOi1E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mMj1ErZD; 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="mMj1ErZD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA87AC4CEF8; Thu, 11 Sep 2025 00:43:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757551413; bh=reVuS9zhTFmkX8jA2nOh2kSTCPa25rqxfdxv2B2YT/8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mMj1ErZDYMrUAbiVv2v/TtrB/uj/pbMRualwLOD4m0MRP3yEkcsmjDKckEGiV7IBh drxorM2WBbqq3rKPxfTskrbDcXni0m05i554Mvp06gmjTFPhAk/0u2SG6OrYMUrsep 5aGxc08KTzRfOeA1DU7tNLWUIRzHixf6DQxppbeAzis2trg9mNTw+m4VC3z+1VWNQP IcMOxoM/qqDiV9qVvYwb7TEpNHsQ9h7RDFl0+6E42TVA958IlefmzQVys0/JF56DSj aCiqAGXZzS3jgnvK6PYk3npbIfUOOv1emP63Gh9ZAKD4tQTSr831A9V2exlgzzYNuh cKj6pxjpS4G7A== 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 v3 5/7] selftests: tracing: Add a basic testcase for wprobe Date: Thu, 11 Sep 2025 09:43:27 +0900 Message-ID: <175755140737.153203.1335190638803609179.stgit@devnote2> X-Mailer: git-send-email 2.43.0 In-Reply-To: <175755135002.153203.324836519360617091.stgit@devnote2> References: <175755135002.153203.324836519360617091.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