From: Arnd Bergmann <arnd@arndb.de>
To: Michael Holzheu <HOLZHEU@de.ibm.com>
Cc: Ingo Oeser <ioe-lkml@rameria.de>,
linux-kernel@vger.kernel.org, mschwid2@de.ibm.com
Subject: Re: How to document dimension units for virtual files?
Date: Tue, 24 Oct 2006 22:13:55 +0200 [thread overview]
Message-ID: <200610242213.56149.arnd@arndb.de> (raw)
In-Reply-To: <OFA94CF0D3.C5318A12-ON42257211.004B4AC4-42257211.004E4728@de.ibm.com>
On Tuesday 24 October 2006 16:15, Michael Holzheu wrote:
> If you want to export data to userspace via virtual filesystems
> like procfs, sysfs, debugfs etc., the following rules are recommended:
>
> - Export only one value in one virtual file.
> - Data format should be as simple as possible.
> - Use ASCII formated strings, no binary data if possible.
> - If data has dimension units, encode that in the filename.
> Please use the following suffixes:
> * kb: Kilobytes
> * mb: Megabytes
> * ms: Milliseconds
> * us: Microseconds
> * ns: Nanoseconds
> * ...
For larger units like kb or mb, why bother at all?
You can just make that a 64 bit number and give an exact value.
You should also be sure to use a correct unit, i.e.
KiB for 1024 bytes and kB for 1000 bytes.
Arnd <><
next prev parent reply other threads:[~2006-10-24 20:14 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-23 12:32 How to document dimension units for virtual files? Michael Holzheu
2006-10-23 19:03 ` Ingo Oeser
2006-10-24 14:15 ` Michael Holzheu
2006-10-24 20:13 ` Arnd Bergmann [this message]
2006-10-28 18:40 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2006-11-08 16:54 Michael Holzheu
2006-11-08 17:04 ` Randy Dunlap
2006-11-08 18:27 ` Michael Holzheu
2006-11-10 6:53 ` Greg KH
2006-11-10 10:03 ` Michael Holzheu
2006-11-13 17:16 ` Greg KH
2006-11-13 12:18 ` Pavel Machek
2006-11-13 17:46 ` Henrique de Moraes Holschuh
2006-11-14 8:50 ` Michael Holzheu
2006-11-08 17:09 ` Jörn Engel
2006-11-08 18:32 ` Michael Holzheu
2006-11-08 18:01 ` Henrique de Moraes Holschuh
2006-11-08 18:37 ` Michael Holzheu
2006-11-08 19:59 ` Henrique de Moraes Holschuh
2006-11-09 23:15 ` Pavel Machek
2006-11-10 13:18 ` Kyle Moffett
2006-11-10 15:41 ` Sanjoy Mahajan
2006-11-13 4:33 ` Kyle Moffett
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