Date: Fri, 08 Apr 2005 19:23:13 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Sam Leffler <sam@errno.com> Cc: src-committers@FreeBSD.org Subject: Re: cvs commit: src/sys/kern kern_mutex.c Message-ID: <19677.1112980993@critter.freebsd.dk> In-Reply-To: Your message of "Fri, 08 Apr 2005 09:40:15 PDT." <4256B3EF.5090702@errno.com>
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In message <4256B3EF.5090702@errno.com>, Sam Leffler writes: >I agree with bde. One major distinction I've noticed between Linux and >BSD systems is that Linux uses sysctls (aka /proc) in lieu of user-mode >tools that retrieve and format data. While this is a reasonable >approach when you're distributing only a kernel that's not the case >here. For debug info I can buy doing it (e.g. single user and no apps >from src/tools), but otherwise we're just adding stuff to the kernel >that belongs in apps. The reason I disagree is that the amount of code it takes to convert the data to an export format and the overhead of having a program in userspace format it into text is ridiculous compared to just formatting things in the kernel to begin with. And besides, a formatted sysctl has no binary compatibility issues at all. I like that too. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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