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 3E08FC6FD20 for ; Fri, 24 Mar 2023 16:14:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231483AbjCXQOQ (ORCPT ); Fri, 24 Mar 2023 12:14:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229441AbjCXQON (ORCPT ); Fri, 24 Mar 2023 12:14:13 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34FA8136DB for ; Fri, 24 Mar 2023 09:13:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1679674417; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=SZ/UgTQ/EPdrz/Txy99iCvW0qyOpe86roDGm7RsPj4A=; b=WIGaZ2drXgDaPVEDKlf8JVev0HcGmiqfZjaU0tFrWUE25mMTNltPtrfTx8vwX0e83Cw/y/ jWjOIuDdEKK7a3gCSYjqpVxobNgHobMbSXPxvdstUK8ZZhstDO/eg0Fb6u0rin83dhJubz keT4yOjxSbkHnbNYfWpOZ3O1Qgks9XU= Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-312-ZP6qBUUZPYW7Hdf6qfw8og-1; Fri, 24 Mar 2023 12:13:36 -0400 X-MC-Unique: ZP6qBUUZPYW7Hdf6qfw8og-1 Received: by mail-ed1-f72.google.com with SMTP id f15-20020a50a6cf000000b0050050d2326aso3814005edc.18 for ; Fri, 24 Mar 2023 09:13:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679674414; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=SZ/UgTQ/EPdrz/Txy99iCvW0qyOpe86roDGm7RsPj4A=; b=fxi+KmSFSGdYNcvvsvIM2c1BTWE2jZ7tnLD17WN0gg3SpeZjYeA/7Qj6xWjOd7kIy2 BU+WQS8cUu7q9UXPbHCPPUxz3yr73iTldMa4xfWxTwR1HKapFALcNCyPeLRqeApFM3DH zuuQDhAy9ZocK4tVT6HPEKS/hAuVPSDiLImJJlmIXMDobvrQB8lR+N3MkcLvPGyhWsP/ 3pI2zGjXY/fvIPkS/aPEhm2INlE6NUW3T1bauwHEpUDpar2dcDlBKcWr/TODhhOSHLqA rPhcvMaa755ksoEXUOdirKaP9fRbvRgDuJIrHQwTCKURY+dS/GrMzorckJ1FvdzuPGkJ HVcA== X-Gm-Message-State: AAQBX9diwRlHaBk4dZ7SBc6Kqy2MxJ0B1MxYHmHHuzt2lFVAiYncwpsF Zoa3BcBQO0Nx/FK6mrzNoxgdiZn7BGZxHg7Oitvgm+WnkKbHkheHpUG+EEaWFSsajTACZtpJN9m XxidP1O8bI50juPf2t4Y+j67/w93hvpTo X-Received: by 2002:a17:906:174b:b0:929:7d80:3a37 with SMTP id d11-20020a170906174b00b009297d803a37mr3176506eje.37.1679674414109; Fri, 24 Mar 2023 09:13:34 -0700 (PDT) X-Google-Smtp-Source: AKy350Z3D+gQFDSt5EoI9IEb97lf2YRt6HhsL3ocTb4w5a8oRnkdtzkltb56R7XfNA57T78wyhUHYQ== X-Received: by 2002:a17:906:174b:b0:929:7d80:3a37 with SMTP id d11-20020a170906174b00b009297d803a37mr3176491eje.37.1679674413867; Fri, 24 Mar 2023 09:13:33 -0700 (PDT) Received: from [192.168.0.198] (host-87-3-200-174.retail.telecomitalia.it. [87.3.200.174]) by smtp.gmail.com with ESMTPSA id i21-20020a17090639d500b009332bb8b1f7sm9142319eje.66.2023.03.24.09.13.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 24 Mar 2023 09:13:33 -0700 (PDT) Message-ID: Date: Fri, 24 Mar 2023 17:13:31 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Content-Language: en-US To: Steven Rostedt Cc: Masami Hiramatsu , Tom Zanussi , LKML From: Daniel Bristot de Oliveira Subject: Enable histograms for events/ftrace/timerlat and osnoise Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Steven I would like to collect histograms from timerlat and osnoise tracers event, but I cannot collect them because they are not tracepoints but... tracer events. So... # ls /sys/kernel/tracing/events/ftrace/timerlat/ format hist no hist, filter, trigger files... How hard would it be to enable histograms to the ftrace/osnoise and ftrace/timerlat events? This will allow me to reduce the overhead of rtla timerlat and rtla osnoise tools... Thanks in advance, Stephen! -- Denny