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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B410FC433E2 for ; Mon, 31 Aug 2020 06:35:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9572E2068E for ; Mon, 31 Aug 2020 06:35:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726695AbgHaGfw (ORCPT ); Mon, 31 Aug 2020 02:35:52 -0400 Received: from mga14.intel.com ([192.55.52.115]:57375 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725794AbgHaGfv (ORCPT ); Mon, 31 Aug 2020 02:35:51 -0400 IronPort-SDR: +XW6kss/CIDOWIPS/v3JqcQLsZVTN72r/PyBSmiiMgTv1E6Nt85p0V8yvCKLVEwkfEqQWhPasn 73FVuHrOcShA== X-IronPort-AV: E=McAfee;i="6000,8403,9729"; a="156178461" X-IronPort-AV: E=Sophos;i="5.76,374,1592895600"; d="scan'208";a="156178461" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Aug 2020 23:35:50 -0700 IronPort-SDR: KBXyTTDiqCRLALor4ZrP2eG7wFDIPkn6lzMhbouuhP22i+9izpIayBGt5FDsdx/3AEWe78wmoP j642F28t+OnA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,374,1592895600"; d="scan'208";a="330595899" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.21]) by orsmga008.jf.intel.com with ESMTP; 30 Aug 2020 23:35:50 -0700 Received: by tassilo.localdomain (Postfix, from userid 1000) id BCA7D301C59; Sun, 30 Aug 2020 23:23:32 -0700 (PDT) Date: Sun, 30 Aug 2020 23:23:32 -0700 From: Andi Kleen To: Adrian Hunter Cc: Arnaldo Carvalho de Melo , Jiri Olsa , Alexey Budankov , Namhyung Kim , linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/6] perf record: Add 'snapshot' control command Message-ID: <20200831062332.GW1509399@tassilo.jf.intel.com> References: <20200829105015.10800-1-adrian.hunter@intel.com> <20200829105015.10800-6-adrian.hunter@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200829105015.10800-6-adrian.hunter@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 29, 2020 at 01:50:14PM +0300, Adrian Hunter wrote: > Add 'snapshot' control command to create an AUX area tracing snapshot the > same as if sending SIGUSR2. The advantage of the FIFO is that access is > governed by access to the FIFO. How about the --switch-output SIGUSR2 switch? Could that be handled too? Other than that it looks great. Thanks. -Andi