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,URIBL_BLOCKED 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 66C61C43381 for ; Fri, 22 Mar 2019 11:50:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 41A842082C for ; Fri, 22 Mar 2019 11:50:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732592AbfCVLuJ (ORCPT ); Fri, 22 Mar 2019 07:50:09 -0400 Received: from mga06.intel.com ([134.134.136.31]:45336 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728700AbfCVLuI (ORCPT ); Fri, 22 Mar 2019 07:50:08 -0400 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Mar 2019 04:50:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,256,1549958400"; d="asc'?scan'208";a="157381266" Received: from pipin.fi.intel.com (HELO pipin) ([10.237.72.175]) by fmsmga001.fm.intel.com with ESMTP; 22 Mar 2019 04:49:59 -0700 From: Felipe Balbi To: Steven Rostedt Cc: Alexander Shishkin , Ingo Molnar , Linux USB , linux-kernel@vger.kernel.org, Chunyan Zhang Subject: Re: [PATCH] usb: gadget: functions: add ftrace export over USB In-Reply-To: <20190321123715.027e9369@gandalf.local.home> References: <20170609061327.17899-1-felipe.balbi@linux.intel.com> <87ftrg8t3j.fsf@linux.intel.com> <20190321123715.027e9369@gandalf.local.home> Date: Fri, 22 Mar 2019 13:49:55 +0200 Message-ID: <87va0bdt7g.fsf@linux.intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Hi, Steven Rostedt writes: >> Felipe Balbi writes: >> > Allow for ftrace data to be exported over a USB Gadget >> > Controller. With this, we have a potentially very fast pipe for >> > transmitting ftrace data to a Host PC for further analysis. >> > >> > Note that in order to decode the data, one needs access to kernel >> > symbols in order to convert binary data into function names and what >> > not. >> > >> > Signed-off-by: Felipe Balbi >> > --- >> > >> > I wanted to take this through the gadget tree, but there is a >> > dependency with a previous patch of mine adding and extra argument to >> > the ->write() function. Hoping someone else will take it.=20=20 >>=20 >> This is still not upstream, I'll take it through my tree this time aroun= d. >>=20 > > Can you post the latest to the list one more time. At least to make > sure you got the naming correct ;-) > > Not FTrace or f_trace. The reason for the name was discussed already. See [1] and [2] [1] https://marc.info/?i=3D878tl1qmrj.fsf@linux.intel.com [2] https://marc.info/?i=3D20170609110717.3304f6b9@gandalf.local.home =2D-=20 balbi --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEElLzh7wn96CXwjh2IzL64meEamQYFAlyUy+MACgkQzL64meEa mQYSyA//UAdv8q0YIxsnPRtr0A97yMCnf2ek9v1xDrTf35+iHNJAqW75/KnhkI1h 3hRI+bllzLv3pasLTqUJ1obGeAwfSEUZmh4SPQg9jjFDaTy7gHYgDgeDWpaSb865 g+BYVRpUmWDjoSAqi4QixcBEx1lWp9DqZqbWbdyNzmNU5T2YkTnOf5NFjCSKK9oU s0/eEbraz+Od3slimoFGiEm5/2b/+RY8u6E+GvIiMETGI1e//M+oLxH6Iq2bsWEZ +3CjzKa72owlGWiBd2Jr7gSAfw69POJvakNqdSbCweQdMw6bHOMxQeJHruvLMx5A jskqJKsOKgp/KEUwGWwIG4hdPc4Ll4Pj1bCWuBbuJqqdGYMYFnm5zq+4XPZwqmms xXEP8ztEOPprsYJgf1CY4iGh+e5Z1L6tA5bSPfpMOojrQd8qTBdUZXltCa/Y6lpH EA/2r7a9b1PSCUEQk3pp2dVRgImttQu0jIAcjhEv60eZJDVzDP4K3oesFVfOMHZH 3s0xnvcDhu8baX7WUsNGiBC3tLLJ9EWwDCBPW7h/ew1RDAgQo+aPj6CGcckRaHBr 6N0+hySAzLMNr9VPPh5DzMZBuq42RBt1EtvpdqjBM1EfL2uUqU+ldOzV4CMrux/j DJjF490L6k9bjEyE1bEBsAxZvjvxjaMyDcd03v4qSUF/8WlClO4= =LjAT -----END PGP SIGNATURE----- --=-=-=--