From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-222706-1526671508-2-4251825070320047921 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-charsets: from='utf-8', plain='utf-8' X-Resolved-to: linux@kroah.com X-Delivered-to: linux@kroah.com X-Mail-from: linux-fsdevel-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1526671507; b=jqsgpWjZH1oZ3P9S1Kmf9vnNeDRH17QEMJ165ld4Sv9KjACc7H eL2bVq0pytwXWkb/zgbiwtsSKXyR3B8LjRJbk7WbEfSxfukx5CE+48f1yvejaJIK VqvfQq9ePsFKy40BZwgBZsD/VOKq7fXCPd2v7G4qIYjrLV86e+REyb0Gdac5DR56 oJ12Ct0aNJVjWS6da6Nr9gFwnvnki81m7kKzXpgm744FJWWbtHvtUudPXQIAQszt +jFYwVgDxOZ9oZjtJSvVJ9BekSF2m7MNJzdSCSHEl+6rmX2/MJ6eKebROuM6UjG6 tVqEq4TZW43KBUZoXYYqhqx3AY4wEzuGUg6Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to:sender :list-id; s=fm2; t=1526671507; bh=6E3jPbF8zNX/ebWGpcArkd8mc4cl9m PnFncVyS3Umd4=; b=VKe5i24w9qxHxcCQR7rsloN9eaEYat+8uiB4yiUl+xX44j vWRYPNmIR9NBp+E8IrMLmlvMYEb7M9u1CZrLVT9bFevilCNhJrHsy5DUPR14u0ci txOPQjlFE10uggzQIiMi/Q1Y+hZ7QlAoU41iK/ftk/nmkwxw0smzz5pR8puf1SQ/ Wm/oHTOKbMzVSczI8p7PDUs7R6jmbPLkEW8WLYjPYzgFSthrbUbraTvU7zWU2IUc AZuVcjKQdMTwEpX/mhe9MxXb5K6MbZ69kMlyqGPY5aA4G+6XuesQ3zsgxYcADOEp Ys5U4b3GsT6aaG8VE/Lva1msGwIgipQ+eK1oUf/g== ARC-Authentication-Results: i=1; mx4.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=samba.org header.i=@samba.org header.b=lzjjpm4G x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=42627210; dmarc=pass (p=quarantine,has-list-id=yes,d=none) header.from=samba.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-fsdevel-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=samba.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx4.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=samba.org header.i=@samba.org header.b=lzjjpm4G x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=42627210; dmarc=pass (p=quarantine,has-list-id=yes,d=none) header.from=samba.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-fsdevel-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=samba.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfGxNkaL9qBHfsGjYbnygVw90BhR3DXE6hwObBtp4gQ+UauC2eM1aZL9ZRT2UWatArwtqyjYlpSPIa6Dr7F8n2bWYeI+tu8N9NezzAm1vRgYvjqpi9yfV 4R4A+4DuRx6wu4aQyMhXrhvyQgR04kLXXwzu365oQ14xD+qXrs9TykgEnSS06I6KFse9vA72yeySQdM4EFcfP0FczSOWBO7oL23gqXIou6HU4rZyq/WJHx+m X-CM-Analysis: v=2.3 cv=JLoVTfCb c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=VUJBJC2UJ8kA:10 a=yMhMjlubAAAA:8 a=hGzw-44bAAAA:8 a=3CfLrWFaAAAA:8 a=FmnfpCVx5hSLn2205IIA:9 a=QEXdDO2ut3YA:10 a=T6BEcSaHHEoA:10 a=HvKuF1_PTVFglORKqfwH:22 a=MCcIZ10OmGFeZTBSk2kH:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751693AbeERTZD (ORCPT ); Fri, 18 May 2018 15:25:03 -0400 Received: from hr2.samba.org ([144.76.82.148]:42324 "EHLO hr2.samba.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750763AbeERTZC (ORCPT ); Fri, 18 May 2018 15:25:02 -0400 Date: Fri, 18 May 2018 20:46:32 +0200 From: Ralph =?utf-8?B?QsO2aG1l?= To: Steve French Cc: CIFS , LKML , samba-technical , linux-fsdevel Subject: Re: [PATCHv2][SMB3] Add kernel trace support Message-ID: <20180518184630.axfa7oq4pewb7foj@kazak> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20171215 Sender: linux-fsdevel-owner@vger.kernel.org X-Mailing-List: linux-fsdevel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Thu, May 17, 2018 at 09:36:36PM -0500, Steve French via samba-technical wrote: > Patch updated with additional tracepoint locations and some formatting > improvements. There are some obvious additional tracepoints that could > be added, but this should be a reasonable group to start with. > > From edc02d6f9dc24963d510c7ef59067428d3b082d3 Mon Sep 17 00:00:00 2001 > From: Steve French > Date: Thu, 17 May 2018 21:16:55 -0500 > Subject: [PATCH] smb3: Add ftrace tracepoints for improved SMB3 debugging > > Although dmesg logs and wireshark network traces can be > helpful, being able to dynamically enable/disable tracepoints > (in this case via the kernel ftrace mechanism) can also be > helpful in more quickly debugging problems, and more > selectively tracing the events related to the bug report. > > This patch adds 12 ftrace tracepoints to cifs.ko for SMB3 events > in some obvious locations. Subsequent patches will add more > as needed. > > Example use: > trace-cmd record -e cifs > > trace-cmd show pardon my ignorance, but are these tracepoints usable with other tracing frameworks like Systemtap? Last time I checked, Systemtap looked like *the* tool. Is there a generic trace point infrastructure that tracing tools can consume, so we're not tied to ftrace? Thanks! -slow -- Ralph Boehme, Samba Team https://samba.org/ Samba Developer, SerNet GmbH https://sernet.de/en/samba/ GPG Key Fingerprint: FAE2 C608 8A24 2520 51C5 59E4 AA1E 9B71 2639 9E46