From nobody Mon Feb 9 04:16:07 2026 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 A3F9C20B1EF for ; Fri, 11 Oct 2024 07:36:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728632185; cv=none; b=i8U9U7yE2hd0v0W07ZBVWhrR5AnuII0mq9ajOnDt7h8HmlJXby4PyY3aLCrlXJyzw5IGmoRm9ynHWgfkvkdD6oWncJZtmDwQFchBSquWwbm0K7giHC3vfiQgZv3SLZwJOqHKR8RQTvG7LtDjYQeUT8U3dSbG0VRfIlInJSn3q8M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728632185; c=relaxed/simple; bh=JuqmInDNCF0j1qi7X8VY+IRMQTve1+ETPqQ3Y60nnhA=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=FWuNGvBlZLFs4kwfo0n4X1ng/0jcMXD/mCDHl96b90cR6HBQQF6aZhQneLPE4E/2iiUtq3RChBLhl2OPXe1vTwmmVIVoytI66BYH/SkX8SpB73aVomAjtI8CVJlCW+nEwq/A1/rDCD+JXUHXPAUcSB5wOca/L5A+HvpsenvCMaA= 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=XECGUSDc; arc=none smtp.client-ip=209.85.128.202 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="XECGUSDc" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-6e1fbe2a6b1so32159477b3.2 for ; Fri, 11 Oct 2024 00:36:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1728632183; x=1729236983; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=h1RDoAb7ubYjo7SH/MUMAZWwf1Fgw9lZgxpoFFh96f4=; b=XECGUSDcKH6N8BU/D68R30ZD8DXcqX6UVk1jaioffmgJUn+/YwVry+XOhwqyBCw9Qy T9lkglx8s3v37tQw2LmjbsIGWlIbOgYyrAXpMZhoEmPDXS2TQiiBItvqvWAk7+GeuQQm eH3WYfZdESAdyVuSPX7lg214IEOfKXuG1BfkYGoQb7+S78lmmAlvMhILzpeyGTZXeQWG IAElI+Jq9upgqZCda/psCuaozUr8n17IZFRjbbqQ23duA9QG3zCFXHTCVWB3vbHkWkal DIKBVu5FrXaikicbTz1787SjGNArOuZEkSFeZ5YoYZxkRfHozBirHGSdzLmsnA0ZVdDa N8HQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728632183; x=1729236983; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=h1RDoAb7ubYjo7SH/MUMAZWwf1Fgw9lZgxpoFFh96f4=; b=DLtJPCWhV+a8spIyauqtmT4P7oOkmKwyK/JfN4AqCzq+IzPSFMY8yTus2XJHwiKqyS PEJjtkNdrbzvj6Gf8y7vx8nzL2PPPN9sC71tNKJvWKDIcHD31iIrsquxAvoBjUzJyMQ9 TLU+XRTi/FnGiyl5NN1TQaPZQWqdMzpM3YQUccBchqZKm39cS1owTYbkzZOWElLLxup2 X7JJ0hhnG+2VKJrOR16DP7pFHebsmkl/g8Z29RK/HKEcQzC7/xoZFJF6pFjDpuSa4AdT rvIUhm11F6qyY0BGfmXkvcPsYZ0wdMH3qZ+meRvQ6+Bfm6WbaSuQ85kL7FKG+VW0Ekvb 4inw== X-Forwarded-Encrypted: i=1; AJvYcCUkj2ho5pp2Ze/uaNJTHRlAFAoZu/wGPvGV3nYguFBzuU76PtwgBvWqXrRpOJ5HEhWhpc3jPeSFN90ZJCY=@vger.kernel.org X-Gm-Message-State: AOJu0YxU+G46q0bvOb843KO+n/tv54wcQRc/K7zMAoG6++0Iqbiw4R1+ tMMrYe0YRR8KAewsGMNcjHfMVVnFT8qA2bIeIlYm5bY9abXtaWmryByVTM/+gFxVhEZ1hgva1t7 XXuCnCw== X-Google-Smtp-Source: AGHT+IEU5guu/3Lk+woHIE6L9NJ5fVlRdYN3CeRTj1h03zL1dcCIN4gq5f88dhPrvr+ImWXEtantlftK84yf X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:8144:56f:2e1e:4db]) (user=irogers job=sendgmr) by 2002:a05:690c:6d8f:b0:6e3:21cf:a67f with SMTP id 00721157ae682-6e347c76847mr857467b3.7.1728632182799; Fri, 11 Oct 2024 00:36:22 -0700 (PDT) Date: Fri, 11 Oct 2024 00:35:55 -0700 In-Reply-To: <20241011073559.431302-1-irogers@google.com> Message-Id: <20241011073559.431302-5-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241011073559.431302-1-irogers@google.com> X-Mailer: git-send-email 2.47.0.rc1.288.g06298d1525-goog Subject: [PATCH v1 4/8] perf test: Avoid list test blocking on writing to stdout From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , James Clark , Howard Chu , Athira Jajeev , Michael Petlan , Veronika Molnarova , Dapeng Mi , Thomas Richter , Ilya Leoshkevich , Colin Ian King , Weilin Wang , Andi Kleen , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Python's json.tool will output the input json to stdout. Redirect to /dev/null to avoid blocking on stdout writes. Signed-off-by: Ian Rogers --- tools/perf/tests/shell/list.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/shell/list.sh b/tools/perf/tests/shell/list.sh index 8a868ae64560..76a9846cff22 100755 --- a/tools/perf/tests/shell/list.sh +++ b/tools/perf/tests/shell/list.sh @@ -24,8 +24,11 @@ trap trap_cleanup EXIT TERM INT =20 test_list_json() { echo "Json output test" + # Generate perf list json output into list_output file. perf list -j -o "${list_output}" - $PYTHON -m json.tool "${list_output}" + # Validate the json using python, redirect the json copy to /dev/null as + # otherwise the test may block writing to stdout. + $PYTHON -m json.tool "${list_output}" /dev/null echo "Json output test [Success]" } =20 --=20 2.47.0.rc1.288.g06298d1525-goog