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 B47CBC433EF for ; Wed, 6 Jul 2022 11:31:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230418AbiGFLbH (ORCPT ); Wed, 6 Jul 2022 07:31:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229531AbiGFLbG (ORCPT ); Wed, 6 Jul 2022 07:31:06 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 307D725EA7 for ; Wed, 6 Jul 2022 04:31:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657107064; 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: in-reply-to:in-reply-to:references:references; bh=7+agReCcm5jknMuxFd1NOmlafXcyNcBcmNobCK4VXC0=; b=Z+FSFOOaRLF3DP3CvPh8vgjeLpQoYL32VGrtCdhHrpN6CSuyL4UhIzUmFOSvLrNpAR0yJu XUJbur6RsYuF+EM1YAGRZ1Sge9m/xgsCMwYKMxhguVmsEanbUo4p0GuuumAyhmgS9pqlqA DGYLOKNjO7JSrUQ2fmmgz7Kjnp141WQ= Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-287-3UDrLCf6PfaxGMA-gsN_tg-1; Wed, 06 Jul 2022 07:31:03 -0400 X-MC-Unique: 3UDrLCf6PfaxGMA-gsN_tg-1 Received: by mail-ej1-f70.google.com with SMTP id qf29-20020a1709077f1d00b00722e68806c4so3628074ejc.4 for ; Wed, 06 Jul 2022 04:31:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:references:cc:from:in-reply-to :content-transfer-encoding; bh=7+agReCcm5jknMuxFd1NOmlafXcyNcBcmNobCK4VXC0=; b=xWZQIVZoL9gx0AhFxAGwuAaeZk6CeVdhubFX9qBXemk6qMKla/sH3VN/6Nen6YiK9A CQFv41v1VN00kjcWlsGnaOV1cps+pPnSI4FEQip8YRDYNAnud9ee8fwc8wug3av9JO/8 qStkYfCrzfe1h2T9TwtxTroB0TIAl6h/J36+y07jPgkCw0l7Zx2jx+AkQqINe0OD40ad 4TB3eMYAsjkm+I2Ov7XZ9w8DGJ4G41ho4G+qBarJ17kVLQRxXdb+uODCCqW66QoC7AdV 1TsiTITFCkwC/e3a4aS7tSm09PHnZNkdOb3PTFYTIQ5GkninlFB4FbzjLfoohbpWbKMr 1wvw== X-Gm-Message-State: AJIora8onUcmpE+tKQRcXPpO3uT6gbWK/ijV66x/xE2wnPrE3L9gkL75 2ssjsjQXWa8LsE8lwKXnyV2zXfi+QV4/I+uZOuum3W01ebicjQB5ZIdZuEJ/LArxXwJ6I2jRdoC 32dwsnZNFOedTAmng1qruCa7+iJNfOA0= X-Received: by 2002:a05:6402:524d:b0:43a:72fe:76b7 with SMTP id t13-20020a056402524d00b0043a72fe76b7mr14114797edd.398.1657107061959; Wed, 06 Jul 2022 04:31:01 -0700 (PDT) X-Google-Smtp-Source: AGRyM1uKrIGQo+bW3bqTqN2i8HBKCyWHsvCM/4Y+BfPNJnB61ImsP//Nqn0WrCxR+IxpQHTmzlEjGQ== X-Received: by 2002:a05:6402:524d:b0:43a:72fe:76b7 with SMTP id t13-20020a056402524d00b0043a72fe76b7mr14114779edd.398.1657107061763; Wed, 06 Jul 2022 04:31:01 -0700 (PDT) Received: from [192.168.0.198] (host-80-104-20-93.retail.telecomitalia.it. [80.104.20.93]) by smtp.gmail.com with ESMTPSA id ec35-20020a0564020d6300b004316f94ec4esm25844708edb.66.2022.07.06.04.31.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 Jul 2022 04:31:01 -0700 (PDT) Message-ID: Date: Wed, 6 Jul 2022 13:31:00 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: stopping ftrace on event Content-Language: en-US To: Benjamin Steinke References: <4044532.36S9Iv5CRb@desktop> Cc: linux-rt-users , "linux-trace-devel@vger.kernel.org" From: Daniel Bristot de Oliveira In-Reply-To: <4044532.36S9Iv5CRb@desktop> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org On 7/6/22 10:50, Benjamin Steinke wrote: > Hi all, > > I'm hunting sporadic high irq-handler latencies in a pcie driver by using > ftrace. I'm currently using trace-cmd record but get way to large files due to > the event being so infrequent. > > Is there a way to stop tracing or dump the current trace buffer when a specific > event occurs? https://www.kernel.org/doc/html/latest/trace/events.html#event-triggers ? -- Daniel > Thanks for your help, > Benjamin > > > >