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From: Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Nicolas Pitre <nico-vtqb6HGKxmzR7s880joybQ@public.gmane.org>
Cc: kstewart-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org,
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	Johan
Subject: Re: [PATCH v3 00/11] Symbol Namespaces
Date: Wed, 21 Aug 2019 06:37:37 -0700	[thread overview]
Message-ID: <20190821133737.GB4890@kroah.com> (raw)
In-Reply-To: <nycvar.YSQ.7.76.1908210840490.19480-fMhRO7WWcppj+hNMo8g0rg@public.gmane.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

  parent reply	other threads:[~2019-08-21 13:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190813121733.52480-1-maennich@google.com>
     [not found] ` <20190813121733.52480-1-maennich-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2019-08-21 11:49   ` [PATCH v3 00/11] Symbol Namespaces Matthias Maennich
     [not found]     ` <20190821114955.12788-1-maennich-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2019-08-21 11:49       ` [PATCH v3 11/11] RFC: watchdog: export core symbols in WATCHDOG_CORE namespace Matthias Maennich
     [not found]         ` <20190821114955.12788-12-maennich-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2019-08-21 12:39           ` Greg KH
2019-08-21 14:59           ` Guenter Roeck
     [not found]             ` <20190821145911.GA6521-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2019-08-21 16:28               ` Matthias Maennich
2019-08-21 12:46       ` [PATCH v3 00/11] Symbol Namespaces Nicolas Pitre
     [not found]         ` <nycvar.YSQ.7.76.1908210840490.19480-fMhRO7WWcppj+hNMo8g0rg@public.gmane.org>
2019-08-21 13:37           ` Greg KH [this message]
     [not found]             ` <20190821133737.GB4890-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2019-08-21 20:48               ` Nicolas Pitre
2019-08-21 13:11       ` Peter Zijlstra
     [not found]         ` <20190821131140.GC2349-Nxj+rRp3nVydTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2019-08-21 13:38           ` Greg KH
     [not found]             ` <20190821133846.GC4890-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2019-08-21 14:03               ` Matthias Maennich

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