From nobody Tue Dec 2 01:36:24 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 53C292F998A for ; Sat, 22 Nov 2025 08:19:59 +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=1763799600; cv=none; b=lbuIA6M1A7Gm9QUDgdQaXO9BI9KL8FD8xRrVGtAe8b6/ExhrI/2HGZud8kwrimh6wbF0pkao8TFGvJZNT8QY9Zdv6ApGRsdbV5vlT6Zv43bhphAVcaPfdCzJSPuoyFH8JD2uRf7Ml7fPLJY811NgYF5lwNGSRFSl5v7Qt5i2tZ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763799600; c=relaxed/simple; bh=JBjw+PRUV6q2F47suf3ArJnOY2FDBb1CgT20m/seTTQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=A6YiQfTdS0x5ZjZ0oygg6Xq/2aGNaVXKiLIDvyrWf+VuOR1nmSJb79bnVlqEE4alMAnUNEooJbOUyoVmBLK7+46RjuHsVm8J+WmVOCetXIVlikd7Q7dKMmBevvfHViXGAdi3y1H+obHzJiAgxu55zUCClnM7wHtAHY33KQKxIZU= 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=1W0Lgzf4; 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="1W0Lgzf4" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-b609c0f6522so5289600a12.3 for ; Sat, 22 Nov 2025 00:19:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763799598; x=1764404398; 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=M0dWtJ5ucKyEr5mZsYIfxNtzj/9j9IGrRpIHX7GVPKo=; b=1W0Lgzf4b8Il8b3nzf6P/AZNEquAGbKPwJN+eK3uLFEtZc9qKqabCjvB+9K0In1Zy1 Figva2y24bjUZCJ1B2aRz+XFytmm0jWQankZs53mP/3/1nClewtGKhB51qjbsBtHBfRZ h3BZI1+DF503v82ptveRq54L5ct0+3UYGk+tQ1DyK+0B0HedETvZsXmsoPsjgDf7v0jl ye49d9WgK7rsyEqoUgRVtgeVYBKn6G8Qu4Aak2GnfkwOXroTxpAyUT99uU1096NGsKeE eKVZfZ+UcjYU1Q1rmyn8dV68oOhqPpiNuW4ZUYUEFe1pNdFi0xXTR/s+iKwLshFab1ww fb5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763799598; x=1764404398; 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=M0dWtJ5ucKyEr5mZsYIfxNtzj/9j9IGrRpIHX7GVPKo=; b=loHIFb65N99i2/JIr0aesOLehqAhEEM0fo9tfhK4yIamknKNi5x3fRkdQX5QGJYYwt QV6Q9xIuATvhVtWuu92n9u/GDU5JDom/96P1UudB04/SatphcgdmsA0ck+5S9/91/P4K 7Y8nUOiFUp48xcxA63TrQTHgIpjjtt4XhWFaJgyM4v2TaDJrBTOXwvKzQj9tCyoIxpi+ QoryKKni1XT6Z5idCqN9eRWXiJO+6w+o3beHdqoHt//Ow9VVgOgb1Yjds8IlZk3HHdwQ H6Smw/rSdhilD7Gjii11CdWOjzjI3UgW8IJJZZtIlAMNZhJ2FmcDvT0mv/75QmKtsrvy xcrw== X-Forwarded-Encrypted: i=1; AJvYcCU3jTpCDKt8tA3wCpm3GcruQxVagA+oBUSz29l8U2DfwcjiXwgS528K85nmErpGY4o8kDomMwwfN/R5jWY=@vger.kernel.org X-Gm-Message-State: AOJu0YySMivlUi7fc0IUrc/MDhOj5+Im1yUZkYzq1acgw51df3CEuiF+ xP2ypsy+W9LCaMs8y+mvUS5J5PQ7IqSBHtssg8PXrZsIqyqv0aoS/ChGiDNn10j3jTivX109ftV r12zt91434w== X-Google-Smtp-Source: AGHT+IFAGXYlBPql1dbEWe9YUydiaxbjL0B4NnfzOBkxsqqY08zoLFLB39IYs1W7Jzt5hllx6EUrxhkmTM6s X-Received: from dyz20.prod.google.com ([2002:a05:693c:4094:b0:2a4:6419:6f8f]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:d10d:b0:2a4:65b5:9868 with SMTP id 5a478bee46e88-2a719c2d0e7mr1509598eec.38.1763799598481; Sat, 22 Nov 2025 00:19:58 -0800 (PST) Date: Sat, 22 Nov 2025 00:19:24 -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: <20251122081929.7588-13-irogers@google.com> Subject: [PATCH v1 12/17] perf tests top: Add basic perf top coverage 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" The test starts a backgroup thloop workload and monitors it using cpu-clock ensuring test_loop appears in the output. Signed-off-by: Ian Rogers --- tools/perf/tests/shell/top.sh | 74 +++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100755 tools/perf/tests/shell/top.sh diff --git a/tools/perf/tests/shell/top.sh b/tools/perf/tests/shell/top.sh new file mode 100755 index 000000000000..768ebcf7a89c --- /dev/null +++ b/tools/perf/tests/shell/top.sh @@ -0,0 +1,74 @@ +#!/bin/bash +# perf top tests +# SPDX-License-Identifier: GPL-2.0 + +set -e + +err=3D0 +log_file=3D$(mktemp /tmp/perf.top.log.XXXXX) + +cleanup() { + rm -f "${log_file}" + trap - EXIT TERM INT +} + +trap_cleanup() { + echo "Unexpected signal in ${FUNCNAME[1]}" + cleanup + exit 1 +} +trap trap_cleanup EXIT TERM INT + +test_basic_perf_top() { + echo "Basic perf top test" + + # Start a workload that spins to generate samples + # thloop runs for the specified number of seconds + perf test -w thloop 20 & + PID=3D$! + + # Allow it to start + sleep 0.1 + + # Run perf top for 5 seconds, monitoring that PID + # Use --stdio to avoid TUI and redirect output + # Use -d 1 to avoid flooding output + # Use -e cpu-clock to ensure we get samples + # Use sleep to keep stdin open but silent, preventing EOF loop or interac= tive spam + if ! sleep 10 | timeout 5s perf top --stdio -d 1 -e cpu-clock -p $PID > "= ${log_file}" 2>&1; then + retval=3D$? + if [ $retval -ne 124 ] && [ $retval -ne 0 ]; then + echo "Basic perf top test [Failed: perf top failed to start or run (ret= =3D$retval)]" + head -n 50 "${log_file}" + kill $PID + wait $PID 2>/dev/null || true + err=3D1 + return + fi + fi + + kill $PID + wait $PID 2>/dev/null || true + + # Check for some sample data (percentage) + if ! grep -E -q "[0-9]+\.[0-9]+%" "${log_file}"; then + echo "Basic perf top test [Failed: no sample percentage found]" + head -n 50 "${log_file}" + err=3D1 + return + fi + + # Check for the symbol + if ! grep -q "test_loop" "${log_file}"; then + echo "Basic perf top test [Failed: test_loop symbol not found]" + head -n 50 "${log_file}" + err=3D1 + return + fi + + echo "Basic perf top test [Success]" +} + +test_basic_perf_top +cleanup +exit $err --=20 2.52.0.rc2.455.g230fcf2819-goog