From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6EE30C433FE for ; Mon, 14 Feb 2022 18:33:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357476AbiBNSda (ORCPT ); Mon, 14 Feb 2022 13:33:30 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:40368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230090AbiBNSd2 (ORCPT ); Mon, 14 Feb 2022 13:33:28 -0500 Received: from mail-il1-x135.google.com (mail-il1-x135.google.com [IPv6:2607:f8b0:4864:20::135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58C09652E3 for ; Mon, 14 Feb 2022 10:33:20 -0800 (PST) Received: by mail-il1-x135.google.com with SMTP id c14so3419929ilm.4 for ; Mon, 14 Feb 2022 10:33:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=tPJrWe/i1MqPMtoPzbeR0YlE4FVwmAqDMvl6+ufirY4=; b=COkS4HG2yhu5A+qPYPGPODAVhYDxh2/jZFV1uAoGVTzJcBYPaXav2ILkA+Rl8b+vzh aP96JiOp8O+222QWhSurBWbwFqm1uF1n0AtJu385qY5DwYoAzFLtML3w+T1hhCwz1UkV LxyE3mKgNIHtUkLv/tlfZQGknbGYd4tdDCNVk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=tPJrWe/i1MqPMtoPzbeR0YlE4FVwmAqDMvl6+ufirY4=; b=08QP6H8UIPuyaaKUX9iNXLWI1Xswt8ieR89HKVhENVFUtTGpMIHA/MhvEjumad1jy5 L6NUv4f3rUy3m+r4R5/jKg65KbVyiAjQ9y2yuAXnGOMZ593begfvcHVRVa97JAa3N1Ek 4iWsOOTreOo+Q98yTluTvjF1OLgDRJ28/79szP6RRXxtHd1rtR+T/HyrLHo/7pGTf1mc 1WRxRRYvzUGoFO1ak6kUQZq1a1eFGXjsOWvs2VgH6sF7rIGMFN03r0GI2E+OsCoPNRaf LvPzGoS9Jz09hUuHqyO17qMwDqtgAQQFHS19tll6hwg6G4hy88YvT4WpBIu1WDAEJ+n6 SHBw== X-Gm-Message-State: AOAM53342OX+yZhaceBrrQK7L7j4CxxgY/3uL1G0WivinvXAQHrzK4eR oKdX+e2NFC/OtDXC9kX9bqbv/df/Sb2U5g== X-Google-Smtp-Source: ABdhPJwmbomCs/78CZKWKJaM/G0NMmImZ7RDFmjRwVP0Cf9Pq2eAUr8RIwQIdHQv4nTc1UGomvsRnA== X-Received: by 2002:a05:6e02:1544:: with SMTP id j4mr92677ilu.77.1644863599754; Mon, 14 Feb 2022 10:33:19 -0800 (PST) Received: from [192.168.1.128] ([71.205.29.0]) by smtp.gmail.com with ESMTPSA id g1sm23149484iob.34.2022.02.14.10.33.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Feb 2022 10:33:19 -0800 (PST) Subject: Re: [PATCH v3] selftests/ftrace: Do not trace do_softirq because of PREEMPT_RT To: Steven Rostedt Cc: Ingo Molnar , Shuah Khan , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, joseph.salisbury@canonical.com, Sebastian Andrzej Siewior , Krzysztof Kozlowski , Shuah Khan References: <20220214083657.165921-1-krzysztof.kozlowski@canonical.com> From: Shuah Khan Message-ID: <8f034cd5-8495-de0e-6a3c-4d002e49cc51@linuxfoundation.org> Date: Mon, 14 Feb 2022 11:33:18 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org On 2/14/22 4:19 AM, Sebastian Andrzej Siewior wrote: > On 2022-02-14 09:36:57 [+0100], Krzysztof Kozlowski wrote: >> The PREEMPT_RT patchset does not use do_softirq() function thus trying >> to filter for do_softirq fails for such kernel: >> >> echo do_softirq >> ftracetest: 81: echo: echo: I/O error >> >> Choose some other visible function for the test. The function does not >> have to be actually executed during the test, because it is only testing >> filter API interface. >> >> Signed-off-by: Krzysztof Kozlowski >> Reviewed-by: Shuah Khan >> Reviewed-by: Steven Rostedt (VMware) > > Acked-by: Sebastian Andrzej Siewior > >> Notes: >> I understand that the failure does not exist on mainline kernel (only >> with PREEMPT_RT patchset) but the change does not harm it. > Steve, Would you like me to take this through linux-kselftest next for 5.18-rc1 I am guessing there is no urgency on this - of not I can take this in for rc5. thanks, -- Shuah