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=-7.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 66F90C76186 for ; Tue, 23 Jul 2019 22:36:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 39D6820644 for ; Tue, 23 Jul 2019 22:36:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563921386; bh=S+OBtAljJE6cIolYurUB5uyTZhGfXmhmh+XdeLh/sNw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=bxbaqrSUthCH1dH7yoH/4F27ahN0Sih+0jW5Wtv/dPcQrrLGh6LC+m4m465iPyOHb eMi0bSYONQ+ErRG58uZ0FXQaUNV0ol/BfaL9F0mJrb/6I6nYw1xEh2KMM1V4yLpLN2 gYVt7W7WmsxCDsW2wloSgi7fo9g14AYLSpG2Bpqc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389416AbfGWWgZ (ORCPT ); Tue, 23 Jul 2019 18:36:25 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:45533 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727172AbfGWWgZ (ORCPT ); Tue, 23 Jul 2019 18:36:25 -0400 Received: by mail-pf1-f196.google.com with SMTP id r1so19838439pfq.12; Tue, 23 Jul 2019 15:36:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=zNouKbF6UyPadfEdFSK5fRF7G6CWHnxRN1FzAl+dNYs=; b=SdQIiqD4fkEQwr9X83RCA6yuwNBY1uChpKnXh3cAh+UZV7T/q90T66/ebWnSWzMdU1 4ZhW4dn/MufMU2L+7JiJDj0tARsd7/JfDcK7Kqqk3vaKGtlGIJNFTFOKuIVEJ0tJg6HV nJBlNrJlbG4z+e88LPyvn8BrL/xxUJQuiugCiM1POSvapwm84nYrkEXh/Mp5F/0QCKHD T4d7iSWVbnhNQvkYjTIxXZMgF9DK7sKqcgjD1ReNDbfobnDjlowVaYpWEDPDMZN2xhW7 pis75BozdMnhMsLgEScEd3kHzIXXtW8zbGK+ErLn5nFgdmWdRJBTzk0v8ZxIrsyj4e4i 052A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=zNouKbF6UyPadfEdFSK5fRF7G6CWHnxRN1FzAl+dNYs=; b=lHezlGNQMLc06neDrlGeTu2C9jbKyLlRxOt/jlocy7Ycj217XlmUrHARZX9aeXleEW 1kGxfVrJ7+jlTgCBw8NBQgXy0lWSseNAAnrIXIw6l512r2/0oHMOntQRWcYjKt6wfL7l FiSR8oMGA9qWzePUJovI8kK9fzoIS7jrBTETtXvhewGWg85ACeBb6Hl5S2EyWmiPfi+Z 6oqdKwmCOyNWa90AtbeWArqpQ+PObcT0v2e7gu50LriO0I/VwqbvBXSDcuMK+qXwwrDN Vw6rVfu9kzVjR1K1qr/FM91leZgIPflK24v8Uk+a8uSNwgMJJamfya41YjTriPBW4uiB SnTA== X-Gm-Message-State: APjAAAX+/XJDj4/9ssO2+FBrD/azA2l/bo2ooefm6EC1z6RC4394YTFP ziDYOIDV2k/saph/qSLV3LU= X-Google-Smtp-Source: APXvYqziGHn+6jGrdziu5cLb9QnyDXXK2JmIkImwr7M2iRolvR/fyo5r25/cJX4zAbOa2Ux1/H46Dw== X-Received: by 2002:a62:5883:: with SMTP id m125mr7941308pfb.248.1563921384228; Tue, 23 Jul 2019 15:36:24 -0700 (PDT) Received: from localhost ([2620:10d:c091:500::2:2287]) by smtp.gmail.com with ESMTPSA id w132sm45870833pfd.78.2019.07.23.15.36.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 Jul 2019 15:36:23 -0700 (PDT) Date: Tue, 23 Jul 2019 15:36:21 -0700 From: Tejun Heo To: Konstantin Khlebnikov Cc: Andrew Morton , Konstantin Khlebnikov , Linux Kernel Mailing List , linux-mm@kvack.org, Cgroups , linux-fsdevel , Jens Axboe , Johannes Weiner , Michal Hocko Subject: Re: [PATCH] mm/backing-dev: show state of all bdi_writeback in debugfs Message-ID: <20190723223621.GF696309@devbig004.ftw2.facebook.com> References: <156388617236.3608.2194886130557491278.stgit@buzz> <20190723130729.522976a1f075d748fc946ff6@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 24, 2019 at 12:24:41AM +0300, Konstantin Khlebnikov wrote: > Debugging such dynamic structure with gdb is a pain. Use drgn. It's a lot better than hard coding these debug features into the kernel. https://github.com/osandov/drgn Thanks. -- tejun