From owner-freebsd-hackers@freebsd.org Mon Mar 21 17:34:10 2016 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 09AE6AD7EE1 for ; Mon, 21 Mar 2016 17:34:10 +0000 (UTC) (envelope-from johannes@brilliantservice.co.jp) Received: from mail-vk0-x22c.google.com (mail-vk0-x22c.google.com [IPv6:2607:f8b0:400c:c05::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C2EA8D77 for ; Mon, 21 Mar 2016 17:34:09 +0000 (UTC) (envelope-from johannes@brilliantservice.co.jp) Received: by mail-vk0-x22c.google.com with SMTP id q138so131195081vkb.3 for ; Mon, 21 Mar 2016 10:34:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brilliantservice-co-jp.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=1+PFA+/UIfBNEjEFbqS9QmZLObjmAP3x0Cg+iRmih8E=; b=N85vwMbuaLf4LYL2mKURM9PXsFjyBq7oRSYn61Op0g9P86gpYzgUySLRAjy0XRXPHH Md6tjq4+6lGLuyvDR9QgEtWM/kd7E276KaK8Doibn6cg/JMbknXRVmeDG1pEM+Ciejli 0sWPbto25zKGqSbQZAnSmZL+D5oRsnS2n73Z0z2op1w91S+9/GoGiU1g4S4c3+VpE5pD bWGLkp8uqteJ8k4qu7bScDojDvulrVaLh+nCe6uqiLmDIHnwU062WLQ1Cl/7+zruy0xD pnJFUClvasMd0M+7ujui/2IA5Wn6Kc2RoANXr3IcGm50RZtn7yR0YxI+d3Irq8FrVemy Mc0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=1+PFA+/UIfBNEjEFbqS9QmZLObjmAP3x0Cg+iRmih8E=; b=BuPP89YeCFMveKpsHx1ACkazePFkCri64nO2223aN3bpwLvAC821UYijBIZPjBfzxL KmBZjd7LAxY+2dY5ELaL+zl+Qo5oEGhobpJRQXeL3WYqdeFa945Ng42Misve4WUTgXCi /53yrIR+Q4pVdVtRaetnYFE6EwOAa3Iy6I+Hg2eTgkMuZ+s1wJF049otUEomfSBSX3qO 58xXgCLp3z4o6pDMy0jtx/3zq9LU6Qt5O0u9+h1iDKAjaGcMrioCe+ANg8DEv0QPeOBy 1rJnEFg86+xg+cYovi0Xux6JeKU8EOYrzgZH627OiJhzq9zcNaggX/d44ERfD8AehNBR PJ+w== X-Gm-Message-State: AD7BkJJvFnkBh6D3lFGNeqmSoq1cOCA5cpvj2cCc1wE364hbsAcl5uvUpnjmywamTw2TF1/0hFOdicTh/4sOHg7Z/buEyKXvr8NM8SltyNqHytO1E5N6jxBK3lOiKV/hzTlNmHebn6XvYPCJ0Bh46jo8G38= X-Received: by 10.31.33.84 with SMTP id h81mr33259591vkh.24.1458581648623; Mon, 21 Mar 2016 10:34:08 -0700 (PDT) MIME-Version: 1.0 Received: by 10.159.36.197 with HTTP; Mon, 21 Mar 2016 10:33:54 -0700 (PDT) From: "Lundberg, Johannes" Date: Mon, 21 Mar 2016 10:33:54 -0700 Message-ID: Subject: Debug levels for kernel modules? To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Mar 2016 17:34:10 -0000 SGkNCg0KSXMgdGhlcmUgYSBnZW5lcmFsIHJ1bGUgZm9yIGRlYnVnIGxldmVsIHJhbmdlcyAoc2V0 IHdpdGggc3lzY3RsKSBpbiBrZXJuZWwNCm1vZHVsZXMgb3IgaXMgaXQgZGlmZmVyZW50IGZyb20g bW9kdWxlIHRvIG1vZHVsZT8NCg0KTGlrZSB3aGF0IGlzIG1heCBsZXZlbCwgd2hhdCBkb2VzIHRo ZSBkaWZmZXJlbnQgbnVtZXJpY2FsIGxldmVscyBtZWFuLCBldGM/DQpJZiBub3QgYSBnZW5lcmFs IHJ1bGUsIGlzIHRoZXJlIGEgd2F5IHRvIGdldCB0aGUgbWF4IG9yIHNldCB0aGUgbWF4DQp2ZXJi b3NpdHkgbGV2ZWwgd2l0aG91dCBrbm93aW5nIHRoZSB2YWx1ZT8NCg0KDQpUaGFua3MNCgotLSAK PS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LT0tCuen mOWvhuS/neaMgeOBq+OBpOOBhOOBpu+8muOBk+OBrumbu+WtkOODoeODvOODq+OBr+OAgeWQjeWu m+S6uuOBq+mAgeS/oeOBl+OBn+OCguOBruOBp+OBguOCiuOAgeenmOWMv+eJueaoqeOBruWvvuix oeOBqOOBquOCi+aDheWgseOCkuWQq+OCk+OBp+OBhOOBvuOBmeOAggrjgoLjgZfjgIHlkI3lrpvk urrku6XlpJbjga7mlrnjgYzlj5fkv6HjgZXjgozjgZ/loLTlkIjjgIHjgZPjga7jg6Hjg7zjg6vj ga7noLTmo4TjgIHjgYrjgojjgbPjgZPjga7jg6Hjg7zjg6vjgavplqLjgZnjgovkuIDliIfjga7p lovnpLrjgIEK6KSH5YaZ44CB6YWN5biD44CB44Gd44Gu5LuW44Gu5Yip55So44CB44G+44Gf44Gv 6KiY6LyJ5YaF5a6544Gr5Z+644Gl44GP44GE44GL44Gq44KL6KGM5YuV44KC44GV44KM44Gq44GE 44KI44GG44GK6aGY44GE55Sz44GX5LiK44GS44G+44GZ44CCCi0tLQpDT05GSURFTlRJQUxJVFkg Tk9URTogVGhlIGluZm9ybWF0aW9uIGluIHRoaXMgZW1haWwgaXMgY29uZmlkZW50aWFsCmFuZCBp bnRlbmRlZCBzb2xlbHkgZm9yIHRoZSBhZGRyZXNzZWUuCkRpc2Nsb3N1cmUsIGNvcHlpbmcsIGRp c3RyaWJ1dGlvbiBvciBhbnkgb3RoZXIgYWN0aW9uIG9mIHVzZSBvZiB0aGlzCmVtYWlsIGJ5IHBl cnNvbiBvdGhlciB0aGFuIGludGVuZGVkIHJlY2lwaWVudCwgaXMgcHJvaGliaXRlZC4KSWYgeW91 IGFyZSBub3QgdGhlIGludGVuZGVkIHJlY2lwaWVudCBhbmQgaGF2ZSByZWNlaXZlZCB0aGlzIGVt YWlsIGluCmVycm9yLCBwbGVhc2UgZGVzdHJveSB0aGUgb3JpZ2luYWwgbWVzc2FnZS4K From owner-freebsd-hackers@freebsd.org Mon Mar 21 17:48:03 2016 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BBC60AD82CE for ; Mon, 21 Mar 2016 17:48:03 +0000 (UTC) (envelope-from ian@freebsd.org) Received: from erouter6.ore.mailhop.org (erouter6.ore.mailhop.org [54.187.213.119]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 84CFC91D for ; Mon, 21 Mar 2016 17:48:03 +0000 (UTC) (envelope-from ian@freebsd.org) X-MHO-User: 04f64bf1-ef8d-11e5-827e-7d17a39bef25 X-Report-Abuse-To: https://support.duocircle.com/support/solutions/articles/5000540958-duocircle-standard-smtp-abuse-information X-Originating-IP: 73.34.117.227 X-Mail-Handler: DuoCircle Outbound SMTP Received: from ilsoft.org (unknown [73.34.117.227]) by outbound3.ore.mailhop.org (Halon Mail Gateway) with ESMTPSA; Mon, 21 Mar 2016 17:47:45 +0000 (UTC) Received: from rev (rev [172.22.42.240]) by ilsoft.org (8.15.2/8.14.9) with ESMTP id u2LHltUj009100; Mon, 21 Mar 2016 11:47:55 -0600 (MDT) (envelope-from ian@freebsd.org) Message-ID: <1458582475.68920.90.camel@freebsd.org> Subject: Re: Debug levels for kernel modules? From: Ian Lepore To: "Lundberg, Johannes" , freebsd-hackers@freebsd.org Date: Mon, 21 Mar 2016 11:47:55 -0600 In-Reply-To: References: Content-Type: text/plain; charset="us-ascii" X-Mailer: Evolution 3.16.5 FreeBSD GNOME Team Port Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Mar 2016 17:48:03 -0000 On Mon, 2016-03-21 at 10:33 -0700, Lundberg, Johannes wrote: > Hi > > Is there a general rule for debug level ranges (set with sysctl) in > kernel > modules or is it different from module to module? > > Like what is max level, what does the different numerical levels > mean, etc? > If not a general rule, is there a way to get the max or set the max > verbosity level without knowing the value? > > > Thanks > In my experience there is no standard other than "bigger numbers usually mean more-noisy-and-detailed output". In a few places the debug value is a bitmask of categories rather than a "volume knob"; it' s nice when that's indicated with a name like kern.geom.debugflags instead of just "debug". -- Ian