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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham 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 9E238C43381 for ; Wed, 27 Mar 2019 16:29:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D7452087C for ; Wed, 27 Mar 2019 16:29:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727791AbfC0Q3O convert rfc822-to-8bit (ORCPT ); Wed, 27 Mar 2019 12:29:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:48610 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726990AbfC0Q3O (ORCPT ); Wed, 27 Mar 2019 12:29:14 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8A8742082F; Wed, 27 Mar 2019 16:29:13 +0000 (UTC) Date: Wed, 27 Mar 2019 12:29:12 -0400 From: Steven Rostedt To: Divya Indi Cc: linux-kernel@vger.kernel.org, Joe Jin Subject: Re: [PATCH] tracing: Kernel access to Ftrace instances Message-ID: <20190327122912.70bcf31a@gandalf.local.home> In-Reply-To: <1553106531-3281-2-git-send-email-divya.indi@oracle.com> References: <1553106531-3281-1-git-send-email-divya.indi@oracle.com> <1553106531-3281-2-git-send-email-divya.indi@oracle.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 20 Mar 2019 11:28:51 -0700 Divya Indi wrote: > Ftrace provides the feature “instances” that provides the capability to > create multiple Ftrace ring buffers. However, currently these buffers > are created/accessed via userspace only. The kernel APIs providing these > features are not exported, hence cannot be used by other kernel > components. > > This patch aims to extend this infrastructure to provide the > flexibility to create/log/remove/ enable-disable existing trace events > to these buffers from within the kernel. > > Signed-off-by: Divya Indi > Reviewed-by: Joe Jin > --- I added this to my queue, for 5.2 and then we'll see what it will do. -- Steve