From: David Miller <davem@davemloft.net>
To: weigelt@metux.de
Cc: linux-kernel@vger.kernel.org
Subject: Re: Dynamic linking in the kernel
Date: Sun, 21 Feb 2010 22:21:22 -0800 (PST) [thread overview]
Message-ID: <20100221.222122.193722153.davem@davemloft.net> (raw)
In-Reply-To: <4B82197F.4050902@metux.de>
From: Enrico Weigelt <weigelt@metux.de>
Date: Mon, 22 Feb 2010 06:43:27 +0100
> David Miller wrote:
>
>> In order to implement this the kernel would have to also save a copy
>> of all pieces of the processes's environment and compare all of the
>> environment variable settings on every execution. This would be
>> needed to handle things like LD_PRELOAD, LD_LIBRARY_PATH, and LD_DEBUG
>> as just three examples.
>
> Fairly simple:
>
> * parsed per-module data is cached by its inode id
> * cached data that can be influenced by LD_PRELOAD/LD_LIBRARY_PATH
> (eg. mapping of library names to actual filenames or inode-id's)
> is cached on hash of these variables plus inode-id
Feel free to implement this and show us the numbers.
I am not as confident as you :-)
prev parent reply other threads:[~2010-02-22 6:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-20 18:22 Enrico Weigelt
2010-02-20 20:57 ` David Miller
2010-02-22 5:43 ` Enrico Weigelt
2010-02-22 6:21 ` David Miller [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100221.222122.193722153.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=weigelt@metux.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®