From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f199.google.com (mail-dy1-f199.google.com [74.125.82.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9DC4039E6F8 for ; Mon, 28 Sep 2026 18:26:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790620019; cv=none; b=iN0L6PL8KMNiob8CSK6PrlJG88A6OXZ2mvwRmoALw0HuFWMTKuZqOUfxyuYiclfQYcdrEumnyg8FlxH3kd3bFAA1T30LuIJ1BTvSGIRGJ2uQGfMm/u23In3v6nenridvPKkoP166JT2hGlf0p/KIPBSKGlZNXKdcSTKBZHFzrgM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790620019; c=relaxed/simple; bh=QBJ1TXfroVLT43aUlu0VYJShdQ/5P4Nw9+kV1JnrH+Y=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Csl84m4anb+ku3X7bYbBNsMq4v/RxLlgm/IaUkPST+8HuMLnBfTeDRJqu21oUD/hF5So9YaWDzt9Pp9Hse6a8AUnNbHfReGLecg320jN3nCyKldMRWnta6DXl/c6+9IY89c40SBN0hu2oolnoks6ExxYdREdPLJQ5hkD3d1WoAY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=U8qJuNdn; arc=none smtp.client-ip=74.125.82.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="U8qJuNdn" Received: by mail-dy1-f199.google.com with SMTP id 5a478bee46e88-34afa104860so80228eec.1 for ; Mon, 28 Sep 2026 11:26:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1790620017; x=1791224817; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=qetGO+kJtSrkzooD0K52/h3hxl/7qmQXLVxIGMd1obU=; b=U8qJuNdnWkRFrRnmDbV65SEQ7tTWR6wG5Vsr4jIEOeUnv6qOK5+h/c1Dbd39W1qOmh 7In6AxKkmWc1wIGPZTwZNOyYb46oPjQVaj6caHP9SUA9tqgkVNogJkOHNuVAfmAnf7FU 9RH8+niqRagwUZD9394U/gRoUxdqzb68VR8TPDgpaXmEyItBxKDr79D2QmmiWxubftMk Sr/dJkGIFGNLDklNI4WRiJA57bx/gCBJ75reVPAKav3qEvDNIhBwxXZ/7f4TKFfOxCBc 4o7nmPWDzcsoY8/oFxaeFFP+BXYsftr0ZHDYQleIteNKXFiYxIl8M8vbLkLWy386SvCb DGDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790620017; x=1791224817; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=qetGO+kJtSrkzooD0K52/h3hxl/7qmQXLVxIGMd1obU=; b=Z1w1UrTsABMHOGY+O3/VSuN0WQoBEry92coaloH1QIte+P2ZZNjUJh1Le6AWl5STlp TTD8QQRoT8uuBCBADQi3wL2KhZPArqtiMq7W9pFivvkHA9AO6uM3oq5X3s9axnka5NMJ FcfZvEW3eshXkFQyJGPjcHBCC+zaLUUtXxOKZZ5ljgn2LQykysk9qfLwFQtrloUOg+lB sPpNhDZYjTD6M7arZ1rBxDHkwlkurfsn+KTUC+GmfP2E3+FnNn/yanQGZut7wo7m0BbX Qa4DqLyXaILbA+Po66le3nSOYwugxIdZ4ZyUjop8V85kRwOnx1pjyBadyWkSyk0KAUuE TcCg== X-Forwarded-Encrypted: i=1; AKwUvByVsJiKQUqaHkDBKHuQn4AHa2jMu+zKinyv28juBevNtoVDjn1l89x7RpylgAdF7lVxxNmeCEFqfUECKiE=@vger.kernel.org X-Gm-Message-State: AFuF++kAGAF7qsTOrzrxeg/yQ0ti7S5/Eioe85VNzr38jotf6Nz6a7dS GGTYH7REcE18dNZC22dsNkoam7f4v+yM2n4GvCMV3KRB5hobYwpGHJlK6KEdxSAyeB1IND0jFM0 SuleqTuEx5w== X-Received: from dlbsw8.prod.google.com ([2002:a05:7022:3a88:b0:146:40d5:dd6b]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:701b:428b:20b0:148:80d4:84ac with SMTP id a92af1059eb24-14880d485e6mr6837425c88.29.1790620016274; Mon, 28 Sep 2026 11:26:56 -0700 (PDT) Date: Mon, 28 Sep 2026 11:25:59 -0700 In-Reply-To: <20260928182605.3649015-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260928182605.3649015-1-irogers@google.com> X-Mailer: git-send-email 2.56.0.rc1.315.gc6ed9934b7-goog Message-ID: <20260928182605.3649015-21-irogers@google.com> Subject: [PATCH v6 20/26] perf test common: Only disable probes in clear_all_probes From: Ian Rogers To: Arnaldo Carvalho de Melo , Namhyung Kim , Aaron Tomlin Cc: Howard Chu , Jakub Brnak , Peter Zijlstra , Ingo Molnar , Jiri Olsa , Adrian Hunter , James Clark , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Ian Rogers Content-Type: text/plain; charset="UTF-8" Writing 0 to events/enable disables every tracepoint, breaking perf sessions running in parallel. Disable just the kprobes and uprobes, an enabled one would make clearing kprobe_events or uprobe_events fail with EBUSY. Assisted-by: Antigravity:gemini-3.1-pro Signed-off-by: Ian Rogers --- tools/perf/tests/shell/common/init.sh | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/shell/common/init.sh b/tools/perf/tests/shell/common/init.sh index cbfc78bec974..db89a5be95dc 100644 --- a/tools/perf/tests/shell/common/init.sh +++ b/tools/perf/tests/shell/common/init.sh @@ -130,9 +130,28 @@ check_uprobes_available() test -e /sys/kernel/debug/tracing/uprobe_events } +# Disable every kprobe and uprobe, listed as "TYPE:GROUP/EVENT ARGS...". +disable_all_probes() +{ + PROBE_SPECS=`cat /sys/kernel/debug/tracing/kprobe_events \ + /sys/kernel/debug/tracing/uprobe_events 2> /dev/null | + cut -d ' ' -f 1` + for PROBE_SPEC in $PROBE_SPECS + do + case "$PROBE_SPEC" in + *:*/*) ;; + *) continue ;; + esac + PROBE_ENABLE="/sys/kernel/debug/tracing/events/${PROBE_SPEC#*:}/enable" + test -e "$PROBE_ENABLE" && echo 0 > "$PROBE_ENABLE" + done +} + clear_all_probes() { - echo 0 > /sys/kernel/debug/tracing/events/enable + # Any enabled probe makes the clearing below fail with EBUSY. Unlike + # events/enable, this leaves other sessions' tracepoints alone. + disable_all_probes check_kprobes_available && echo > /sys/kernel/debug/tracing/kprobe_events check_uprobes_available && echo > /sys/kernel/debug/tracing/uprobe_events } -- 2.56.0.rc1.315.gc6ed9934b7-goog