From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [PATCH v3 00/11] Symbol Namespaces Date: Wed, 21 Aug 2019 06:37:37 -0700 Message-ID: <20190821133737.GB4890@kroah.com> References: <20190813121733.52480-1-maennich@google.com> <20190821114955.12788-1-maennich@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+glpam-linux-mediatek=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: Nicolas Pitre Cc: kstewart-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, oneukum-IBi9RG/b67k@public.gmane.org, linux-aspeed-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, usb-storage-ijkIwGHArpdIPJnuZ7Njw4oP9KaGy4wf@public.gmane.org, Toru Komatsu , Mauro Carvalho Chehab , Nicolas Ferre , David Howells , yamada.masahiro-uWyLwvC0a2jby3iVrkZq2A@public.gmane.org, Will Deacon , patches-yzvPICuk2AA4QjBA90+/kJqQE7yCjDx5@public.gmane.org, Michael Ellerman , hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org, joel-QYYGw3jwrUn5owFQY34kdNi2O/JbrIOy@public.gmane.org, bcm-kernel-feedback-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org, sam-uyr5N9Q2VtJg9hUCZPvPmw@public.gmane.org, cocci-/FJkirnvOdkvYVN+rsErww@public.gmane.org, linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Benjamin Fair , linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Fabio Estevam , openbmc-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, lucas.de.marchi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, Nancy Yuen , mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org, NXP Linux Team , Johan List-Id: linux-mediatek@lists.infradead.org On Wed, Aug 21, 2019 at 08:46:47AM -0400, Nicolas Pitre wrote: > On Wed, 21 Aug 2019, Matthias Maennich wrote: > > > As of Linux 5.3-rc5, there are 31205 [1] exported symbols in the kernel. > > That is a growth of roughly 1000 symbols since 4.17 (30206 [2]). There > > seems to be some consensus amongst kernel devs that the export surface > > is too large, and hard to reason about. > > This is good work. > > One solution for drastically reducing the effective export surface is to > have CONFIG_TRIM_UNUSED_KSYMS=y. This is more extreme than symbol > namespace, but might be worth mentioning nevertheless. Oh that's amazing, I never noticed that feature. That is a nice thing, thanks for pointing it out. greg k-h