From nobody Tue Dec 2 01:36:32 2025 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (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 36D432FBDF3 for ; Sat, 22 Nov 2025 08:20:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763799604; cv=none; b=XYyOGxSs7qJCWFUvJJ5bm1E1NMFskToOMAsWb5pzvEGnhAmEWvi9IE079uL10OiXof5Biw5K0BRzPAI8NmggN/4FVIHiOVEW+F5jRhgFnTNL72PSGlBX2xIfeiaL2HlRdyC1iM0lhqwMY8aH8sH4urlfXFGf4oNeFvaPlm+Dn9g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763799604; c=relaxed/simple; bh=+9Ty3RdjxPn1DEPcjJMI8Qwm0zSzIz5wSK2dJCAQb6U=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=mtLu0M5AwO5mj35BMtXhPpOxpwEQRONrtzndUwG7Z1VFgDNYq49FH2V3b1o7lOEZ2X+/bY/LnQdjuZ8v1p279a6ws5dDiM6AvSWlcdwpP9CPdDhUwS1Y5Pa8oNzzLyUqyyE++DB18T4np9c+ZLUoFSNS1QJGMwmLGqT/5hKeUvA= 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=YsI3G07r; arc=none smtp.client-ip=209.85.215.202 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="YsI3G07r" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-bb27b422cf2so5043527a12.1 for ; Sat, 22 Nov 2025 00:20:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763799602; x=1764404402; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=pYEy6RfxbNCZCLMts1lJ0YqFpFYPy6p0C3XPI81AgP4=; b=YsI3G07rmFmsU3GiYg3qQoT7uPHK6LL6/KPvfBKiaYqEYnBEHy/881FCQWPYP9ZOWn ICYIkrLl/7L4kbBu645EnvVXg74L6bjx7quy3VIglQcEg96rTc44PkihLOXUq3uNQ0hJ tvx5Bg4mxHpy43/BD2Ivtyw3p+vMkTzzsbk8h8qy3KWmnQk6aKWWqQfBy1eIoU+j2v1Z HDQ98EIOdYXa3y4QSkAxMPwNi0cEf7ek12byoRLqpQ3I018MpTzzgVo5RakKd926yAWi MgzzWHrkZlmoGpo7o2Sap83yEPYLYMZ7fJy18q7ePsa/Kp/6v/CT7YXjh+Q3CAS3vMNv vq4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763799602; x=1764404402; h=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; bh=pYEy6RfxbNCZCLMts1lJ0YqFpFYPy6p0C3XPI81AgP4=; b=Vrpem8eNTHs5VJMrcsayqTyTZ+nQBpXeumhnwjl7RPMYgt3BbRub2Ib/agJtFTtoyK pjbepPeqpQxqg+u3fMSksmWRhh5gqH/EjrhwP5tPl0SDAXhx4AyriuEVCUBcE6q1nBC4 wQH+N86PQHhlS1vHHkbNDhWH4PqSAUPxYuzyAIGhbmFWr2ah7fUPvLc84RgKdAIxbBUk doecSy/qmw0lWVQdpPC/v2OddiKvqHMkwNerQnxoSeaKcxY503veaQFFpQY0zIDQGcHt Jrev66Inn2DcG6+SdXn8d+KhvzIGmsVdAVy8Gi3hFiqHqbIk2Yzp9w2xYXZsZyhZJUyP Hdkw== X-Forwarded-Encrypted: i=1; AJvYcCWl82rBbw4Ge/TnGrBnPL4qwbtnfH5Mbe74rh0h7ZhCj0ix0QkiLJUiVxS1wUAr93kAW1dBXfpUUPcZkPw=@vger.kernel.org X-Gm-Message-State: AOJu0YwK9M0a+LMlaQONGOFpFjwcUCb9Vr+ku+Nfqfz+rP+7QCOQlXZQ R108qWd9VFVhMYWxQX2FP84pqw52My/2q/uU7zuz8msZF4+CfeoBig4p536LEvacux1+c/jZ/yy zAzD6mzn5Uw== X-Google-Smtp-Source: AGHT+IGYJzsMo6JhpnemALeHmWMVPPWcWvAmP/WHrOs4KNVqW2PSe1SU8oltPXxJZ2F7BPNPvErM3zmJVfXt X-Received: from dycmq22.prod.google.com ([2002:a05:7301:796:b0:2a2:318c:8559]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:1011:b0:2a4:64ae:e071 with SMTP id 5a478bee46e88-2a7192b4ccamr2191878eec.30.1763799602392; Sat, 22 Nov 2025 00:20:02 -0800 (PST) Date: Sat, 22 Nov 2025 00:19:26 -0800 In-Reply-To: <20251122081929.7588-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251122081929.7588-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.rc2.455.g230fcf2819-goog Message-ID: <20251122081929.7588-15-irogers@google.com> Subject: [PATCH v1 14/17] perf tests kallsyms: Add basic kallsyms test From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Collin Funk , Dmitry Vyukov , Andi Kleen , Thomas Falcon , Leo Yan , Yicong Yang , Greg Kroah-Hartman , "Masami Hiramatsu (Google)" , Stephen Brennan , Haibo Xu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add test that kallsyms finds a well known symbol and fails for another. Signed-off-by: Ian Rogers --- tools/perf/tests/shell/kallsyms.sh | 56 ++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100755 tools/perf/tests/shell/kallsyms.sh diff --git a/tools/perf/tests/shell/kallsyms.sh b/tools/perf/tests/shell/ka= llsyms.sh new file mode 100755 index 000000000000..d0eb99753f47 --- /dev/null +++ b/tools/perf/tests/shell/kallsyms.sh @@ -0,0 +1,56 @@ +#!/bin/bash +# perf kallsyms tests +# SPDX-License-Identifier: GPL-2.0 + +err=3D0 + +test_kallsyms() { + echo "Basic perf kallsyms test" + + # Check if /proc/kallsyms is readable + if [ ! -r /proc/kallsyms ]; then + echo "Basic perf kallsyms test [Skipped: /proc/kallsyms not readable]" + err=3D2 + return + fi + + # Use a symbol that is definitely a function and present in all kernels, = e.g. schedule + symbol=3D"schedule" + + # Run perf kallsyms + # It prints "address symbol_name" + output=3D$(perf kallsyms $symbol 2>&1) + ret=3D$? + + if [ $ret -ne 0 ] || [ -z "$output" ]; then + # If empty or failed, it might be due to permissions (kptr_restrict) + # Check if we can grep the symbol from /proc/kallsyms directly + if grep -q "$symbol" /proc/kallsyms 2>/dev/null; then + # If it's in /proc/kallsyms but perf kallsyms returned empty/error, + # it likely means perf couldn't parse it or access it correctly (e.g. k= ptr_restrict=3D2). + echo "Basic perf kallsyms test [Skipped: $symbol found in /proc/kallsym= s but perf kallsyms failed (output: '$output')]" + err=3D2 + return + else + echo "Basic perf kallsyms test [Skipped: $symbol not found in /proc/kal= lsyms]" + err=3D2 + return + fi + fi + + if echo "$output" | grep -q "not found"; then + echo "Basic perf kallsyms test [Failed: output '$output' does not contai= n $symbol]" + err=3D1 + return + fi + + if perf kallsyms ErlingHaaland | grep -vq "not found"; then + echo "Basic perf kallsyms test [Failed: ErlingHaaland found in the outpu= t]" + err=3D1 + return + fi + echo "Basic perf kallsyms test [Success]" +} + +test_kallsyms +exit $err --=20 2.52.0.rc2.455.g230fcf2819-goog