From mboxrd@z Thu Jan 1 00:00:00 1970 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 2F0B01AAE19 for ; Thu, 24 Oct 2024 07:33:37 +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=1729755220; cv=none; b=Ykh8Mp0biQEsSVYuYhNP0z036mcaNKGdxLPOBanuHkti7YywzX6rttTWn18G9087pNtK1U5KkE/EN95Vi6P0kgauD3V/5dSP9KYwOJU/LrVJlalVlND+76nnQnNUyUmPDecdOcVEp8oPTqCPrPVL4v497KRq0NIWGXwGdtJLPRI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729755220; c=relaxed/simple; bh=0odQGceZNBTkUJ7F9d7VELVpW9gytwTlwU17UG1a/+U=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=iQSbtsEfnmF2zY4SGg96FQnAFqvbLUaMtYk2jsAasvFMrcWVGRHih1TzAQ8WfvuUvUlRBZIn87LjRB6C/IUFmk+nqHyIzfyiyykQP7R30CVXQcouHxJ4vrWMz2ovoCiZxkit9BUMvrfVIlUlk+Ipn7v4gwSBbQEFxAkff34dhgo= 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=DAhqF73g; 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="DAhqF73g" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-6e35a643200so12554907b3.0 for ; Thu, 24 Oct 2024 00:33:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1729755217; x=1730360017; 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=6iAkrxns4o/btTyHCpeR4AXaTsboqF9Bu2tTm7l0wyc=; b=DAhqF73gMsdPuRr+r90hmQB7GUvP+OwUu4nVIinIp1c3c5cYUQrBT+8BekrsAR9cJw 8qY38NEzOVk4ea4HJEBP/VygbFGZSko/kbLlaymTKZllpsM+jaPp1YX7OfUXMq6Rfnj9 AAmkoPdsewrsBXF5I7wcyDEGSpH7z18fLEwNu1vY4+M45f6KV2hguf4IOM0wh6nc3gDd OIEFqJBJBodc2sVkXD/zL0c5Boe/jg1/LLaXvY7Z9IqxlwJmhWgqcdGES5/n1gutlMuk 5hkDk7vU7UILqGLf3Df5lAe+4MR6/Q64NEGPulkTEPF49jH5EYEQZ4V/Guwy21o0mX2C ZQvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729755217; x=1730360017; 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=6iAkrxns4o/btTyHCpeR4AXaTsboqF9Bu2tTm7l0wyc=; b=it2aj+AVPUy8rWV5FqRwUT2jOYd+07hxdaXaI6kFx8WpA0tbLWbRz2vL7ywEFqUpOU +yPP5+viNhQOGsgBgyQJNvhjMIksaZc5PZCprrD6aiLI6n0IQMK1pcZuzUphzOHTgfMd Nh1eoGBbDK/w4Hz9/qF5LKcITEbS3L2hlBt84FEnVBIqs7PNRCIY4eYdodebPzqnIgRf wfWrSUFYvKgaBjneDHx2YjMUxcsKv5Lltqjlp7OX4pWYS7p4TAOBSrhTDaJbK/wJ+VWn EWU2ZFd++d8nqfqkM3nFHdrVPzhgtRV8l3rskcr2MMWBRqu4hyG6NtSnW2Py6ZuWMc4l 3C2A== X-Forwarded-Encrypted: i=1; AJvYcCV/8kDwi+uSdroJAockjYHgHiz/KokGESVsLtkp6OMVRgkeYpQfQ5hbWvqDn3MJm5I4+8slKWNDRRoSOKS2UaZ2@vger.kernel.org X-Gm-Message-State: AOJu0YyC/D/C1XoDAIDT+iOSUcXgHUTNKramWydMLH8iJeH90/fmwvA1 hQKz9s5bbMFf1OnVnEmVi4UWE5Rb11ZUVNez0yCaUWwpaq/Y37ZWYq3ZsAmgVq+eg8Z1l2gkdfo RtBvtOQ== X-Google-Smtp-Source: AGHT+IFFtCAXX1qu6Kjrfshreh94FSiauh3ke22NfApbqYF5WQtwb+Vjg397ye8X47fUQ6CqaBJChB4TkWZg X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:2391:e0be:5394:f85d]) (user=irogers job=sendgmr) by 2002:a05:690c:4804:b0:6e2:1842:c2e9 with SMTP id 00721157ae682-6e8662f961dmr528997b3.4.1729755217042; Thu, 24 Oct 2024 00:33:37 -0700 (PDT) Date: Thu, 24 Oct 2024 00:33:18 -0700 In-Reply-To: <20241024073324.1513433-1-irogers@google.com> Message-Id: <20241024073324.1513433-5-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241024073324.1513433-1-irogers@google.com> X-Mailer: git-send-email 2.47.0.163.g1226f6d8fa-goog Subject: [PATCH v4 04/10] 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-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. Tested-by: James Clark 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 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]" } -- 2.47.0.163.g1226f6d8fa-goog