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[209.85.220.65]) by mx.google.com with SMTPS id h26sor25654602pfo.20.2019.07.23.15.36.24 for (Google Transport Security); Tue, 23 Jul 2019 15:36:24 -0700 (PDT) Received-SPF: pass (google.com: domain of htejun@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=SdQIiqD4; spf=pass (google.com: domain of htejun@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=htejun@gmail.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org 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-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) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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